[{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/about/","section":"Tags","summary":"","title":"About","type":"tags"},{"content":" Turning complex technology into winning deals Who Am I? # Hi! I\u0026rsquo;m Jeroen Tuijn, based in the Netherlands. My sweet spot? Sales and presales — standing between the technical team and the customer, making sure both sides understand each other and walk away happy.\nI\u0026rsquo;m the person who can explain a complex product in a way that makes sense to a CEO and a CTO. I build the demos, write the proposals, and craft the technical narrative that wins the deal.\nWhat I Bring to the Table # 🎯 Sales \u0026amp; Presales (My Core) # This is where I shine:\nTechnical Presentations \u0026amp; Demos: I don\u0026rsquo;t just show features — I tell the story of how your product solves the customer\u0026rsquo;s problem. Proofs of Concept: Building quick, convincing demos that prove the technology works in the customer\u0026rsquo;s context. Proposal Writing: Translating technical specs into business value. RFPs, tenders, quotes — I make them compelling. Solution Mapping: Listening to what the customer actually needs (not just what they say) and matching it to the right technology. Stakeholder Management: Comfortable talking to engineers, procurement, and C-level in the same week. Competitive Intelligence: Knowing the landscape — who does what, where we win, and where we differentiate. ⚡ Vibe Coding (My Accelerator) # When I need to prototype something fast, I don\u0026rsquo;t start from scratch — I vibe code. Using AI-assisted tools, I go from rough idea to working prototype in hours. It\u0026rsquo;s not about replacing developers — it\u0026rsquo;s about having something tangible to show during the sales cycle before the engineering team is even briefed.\nRapid Prototyping: Idea → working demo in a single session AI-Assisted Development: Leveraging LLMs and tools to move fast without sacrificing quality PoC Generation: Turning customer requirements into a clickable prototype for the next meeting Static Sites \u0026amp; Portfolios: This site itself is a vibe-coded Hugo portfolio 🛠️ Technical Foundation # Under the hood, I\u0026rsquo;ve got enough technical depth to be credible:\nLanguages: Python, JavaScript/TypeScript, SQL, Go (learning), Rust (exploring) Web: Hugo (static sites), React, FastAPI, Node.js DevOps: Docker, CI/CD, Git, Linux, GitHub Actions Databases: PostgreSQL, SQLite What Drives Me # 🎯 Winning the Deal: There\u0026rsquo;s nothing like seeing a proposal you wrote land the account.\n🚀 Speed Matters: In sales, timing is everything. A good demo today beats a perfect one next month.\n💡 Bridge Builder: I love being the person who connects tech and business — neither side feels misunderstood.\n🤝 Customer First: Every solution starts with understanding the problem from their perspective.\nOutside of Work # When I\u0026rsquo;m not prepping a demo or building a prototype:\nExperimenting with AI tools and finding new ways to work faster Tinkering with side projects (half of them never ship, but they\u0026rsquo;re fun to build) Staying current on the tech landscape — you never know what\u0026rsquo;ll be relevant for the next deal [Add your hobbies/interests here] Let\u0026rsquo;s Connect # Always open to new opportunities, partnerships, and conversations about technology, sales, or whatever\u0026rsquo;s on your mind.\n📧 Email: jeroen.tuijn@gmail.com 💼 LinkedIn: Connect with me 🐙 GitHub: Check out my repos ⛰️ Codeberg: View my projects 📄 Resume: Download CV\n","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/about/","section":"Jeroen Tuijn","summary":"Professional background in sales, presales, solution engineering, and rapid prototyping","title":"About Me","type":"page"},{"content":" Explore my open-source projects and repositories 🚀 Featured Projects # Below are my carefully curated projects that demonstrate my skills and experience:\n⚠️ Unable to load GitHub repositories. The API may be rate-limited or temporarily unavailable. ⛰️ valueopsplaybook Codeberg valueopsplaybook\n⭐ 0 View Repository → ⛰️ highfidelityradioplayer Codeberg highfidelityradioplayer\n⭐ 0 View Repository → ⛰️ profile Codeberg profile page of Jeroen Tuijn\n⭐ 0 View Repository → ⛰️ bangkok-brunch Codeberg Website voor Bangkok Brunch\n⭐ 0 🔤 HTML View Repository → ⛰️ vibe-coding-voor-beginners Codeberg Vibe Coding voor beginners\n⭐ 0 🔤 HTML View Repository → ⛰️ automatiseer.io Codeberg Een website over business en sales automation met handige templates\n⭐ 0 View Repository → ⛰️ hypersmiling Codeberg web application to train you how to hypermile with your car\n⭐ 0 View Repository → ⛰️ foreman-the-mill Codeberg Foreman the mill game\n⭐ 0 View Repository → ⛰️ ppp-the-game Codeberg P for politico party the game\n⭐ 0 🔤 JavaScript View Repository → 📂 All Repositories # 💡 Note: If the repositories below don\u0026rsquo;t load, you can view them directly:\nGitHub: github.com/jahruhn Codeberg: codeberg.org/toulcit 🏗️ Project Categories # Backend Development:\nREST APIs Microservices Database Design Frontend Development:\nReact Applications Dashboards Interactive UIs DevOps \u0026amp; Infrastructure:\nCI/CD Pipelines Container Orchestration Automation Tools 🔗 Want to see more? Visit my GitHub profile or Codeberg profile for complete repository lists.\n","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/projects/all-projects/","section":"Projects","summary":"Dynamic project showcase pulling from GitHub and Codeberg APIs","title":"All Projects","type":"projects"},{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/bio/","section":"Tags","summary":"","title":"Bio","type":"tags"},{"content":"Welcome to my blog! Here I share insights, tutorials, and reflections on software development, DevOps, and technology.\nRecent Articles # ","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/posts/","section":"Blog","summary":"Thoughts on software development, best practices, and technology trends","title":"Blog","type":"posts"},{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/blowfish/","section":"Tags","summary":"","title":"Blowfish","type":"tags"},{"content":" I\u0026rsquo;m always interested in new opportunities, collaborations, and conversations about technology 💬 Let\u0026rsquo;s Connect # Whether you have a project idea, a job opportunity, or just want to chat about tech, I\u0026rsquo;d love to hear from you! Choose the method that works best for you:\n📧 Email # Best for: Detailed inquiries, project proposals, formal communications\n📧 Send Email 💼 LinkedIn # Best for: Professional networking, job opportunities, endorsements\n💼 Connect on LinkedIn 🐙 GitHub # Best for: Code collaboration, open source projects, technical discussions\n🐙 Follow on GitHub ⛰️ Codeberg # Best for: Open source collaboration, privacy-focused projects\n⛰️ Connect on Codeberg 📅 Schedule a Call # Best for: In-depth discussions, interviews, project planning\n💡 Tip: Book a 30-minute call directly through my calendar:\n📅 Schedule via Calendly (add your Calendly link here)\n🌐 Quick Contact Form # Prefer a quick message? You can also reach out through GitHub Discussions:\n💬 Start a Discussion 📍 Location # Based in The Netherlands 🇳🇱\nOpen to remote work worldwide\nAvailable for on-site in EU (relocation/travel)\n⚡ Response Time # I typically respond within 24-48 hours. If you don\u0026rsquo;t hear back, feel free to follow up via a different channel!\n🔒 Privacy # Your information is safe. I don\u0026rsquo;t share personal details or correspondence with third parties.\n💬 Looking for my work? Check out my Projects or read more About Me\n","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/contact/","section":"Get In Touch","summary":"Multiple ways to reach me for collaborations, opportunities, or just to say hello","title":"Get In Touch","type":"contact"},{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/hugo/","section":"Tags","summary":"","title":"Hugo","type":"tags"},{"content":"Welcome to my portfolio! I\u0026rsquo;m a Sales \u0026amp; Presales professional who bridges the gap between technology and business — turning complex solutions into clear, persuasive narratives that win deals.\nI speak both tech and business. That\u0026rsquo;s my edge. What I Do # Sales \u0026amp; Presales: Crafting proposals, demos, and technical presentations that close deals. I translate product capabilities into customer value. Solution Engineering: Understanding client needs, mapping them to the right technology, and building proofs-of-concept that prove the point. Vibe Coding: Rapid prototyping with AI-assisted tools. I go from idea to working prototype in hours, not weeks — great for demos and PoCs. Communication: Breaking down complex concepts so anyone — technical or not — gets it and buys in. Recent Projects # Below you\u0026rsquo;ll find a selection of my recent work and side projects. Feel free to explore my repositories on GitHub or Codeberg.\n💡 Looking for someone who can close the technical deal? Check out my GitHub profile or reach out via LinkedIn\n","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/","section":"Jeroen Tuijn","summary":"Welcome to my portfolio! I’m a Sales \u0026 Presales professional who bridges the gap between technology and business — turning complex solutions into clear, persuasive narratives that win deals.\nI speak both tech and business. That’s my edge. What I Do # Sales \u0026 Presales: Crafting proposals, demos, and technical presentations that close deals. I translate product capabilities into customer value. Solution Engineering: Understanding client needs, mapping them to the right technology, and building proofs-of-concept that prove the point. Vibe Coding: Rapid prototyping with AI-assisted tools. I go from idea to working prototype in hours, not weeks — great for demos and PoCs. Communication: Breaking down complex concepts so anyone — technical or not — gets it and buys in. Recent Projects # Below you’ll find a selection of my recent work and side projects. Feel free to explore my repositories on GitHub or Codeberg.\n","title":"Jeroen Tuijn","type":"page"},{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/portfolio/","section":"Tags","summary":"","title":"Portfolio","type":"tags"},{"content":"This portfolio site demonstrates my ability to:\nSet up and configure static site generators Work with modern themes and customize them Structure content effectively Optimize for performance and SEO Technologies Used:\nHugo (Static Site Generator) Blowfish Theme Markdown for content GitHub/Codeberg for hosting 🔗 View Live: https://toulcit.codeberg.page/portfolio/\n","date":"April 8, 2026","externalUrl":"https://toulcit.codeberg.page/portfolio/","permalink":"/profile/projects/portfolio/","section":"Projects","summary":"A modern, responsive portfolio showcasing my projects and skills","title":"Portfolio Website","type":"projects"},{"content":"Welcome to my project portfolio! Below you\u0026rsquo;ll find a selection of projects I\u0026rsquo;ve worked on. You can also explore my repositories on GitHub and Codeberg.\nFeatured Projects # These are some of my recent highlights:\n","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/projects/","section":"Projects","summary":"A collection of my personal and professional projects","title":"Projects","type":"projects"},{"content":" From the boardroom to the code editor — I operate in both worlds 🎯 Sales \u0026amp; Presales (Core Strengths) # Customer-Facing Skills # Skill What It Means Technical Presentations Delivering product demos that tell a story, not a feature list Proof of Concept Building quick, convincing demos tailored to the customer\u0026rsquo;s context Proposal \u0026amp; Tender Writing Translating technical capabilities into business value — RFPs, quotes, bids Solution Mapping Matching customer pain points to the right technology solution Stakeholder Management Comfortable with engineers, procurement, and C-level alike Competitive Analysis Knowing the landscape, our differentiators, and where we win Requirements Gathering Listening past the stated need to find the real problem Sales Tools \u0026amp; Processes # CRM systems (Salesforce, HubSpot, Pipedrive) Proposal and quote generation RFP/tender response management Technical sales enablement Account-based selling Sales cycle management ⚡ Vibe Coding (My Accelerator) # I use AI-assisted development tools to go from rough idea to working prototype in hours — perfect for PoCs, demos, and getting stakeholder buy-in before committing engineering resources.\nAI-Assisted Development: LLMs, Copilot, Cursor — whatever gets me there fastest Rapid Prototyping: Idea → working demo in a single session Static Site Generation: Hugo, Markdown-first workflow PoC Generation: Customer requirements → clickable prototype for the next meeting This Portfolio: Built and deployed entirely through vibe coding with Qwen/Claude 🛠️ Technical Foundation # I\u0026rsquo;ve got enough depth to be credible in technical conversations without needing to be a full-time engineer.\nProgramming Languages # Python Strong\nJavaScript / TypeScript Functional\nSQL Solid\nGo Exploring\nRust Curious\nTools I Actually Use # Git: GitHub, Codeberg, GitLab — version control is non-negotiable Docker: Containerizing things so demos work everywhere CI/CD: GitHub Actions — automated builds and deploys Hugo: Static site generator (this site is proof) Linux: Comfortable on the command line when I need to be PostgreSQL / SQLite: Data storage for prototypes and PoCs 💼 Work Experience # Software Developer — Current Role\n📅 2024 - Present | 📍 Netherlands\nBuilding modern web applications with React and Python Implementing CI/CD pipelines and DevOps best practices Contributing to open-source projects Mentoring junior developers Key Achievements:\nReduced deployment time by 60% through automation Implemented comprehensive test suite (90%+ coverage) Led migration to microservices architecture Backend Developer\n📅 2022 - 2024 | 📍 Netherlands\nDeveloped RESTful APIs with FastAPI and Django Designed and optimized PostgreSQL databases Implemented authentication and authorization systems Collaborated with frontend teams on API design Key Achievements:\nImproved API response times by 40% through optimization Built automated testing framework Documented API specifications with OpenAPI/Swagger Junior Developer\n📅 2020 - 2022 | 📍 Netherlands\nFull-stack development with JavaScript and Python Bug fixing and feature enhancements Code reviews and quality assurance Agile development practices Key Achievements:\nCompleted first production deployment independently Refactored legacy codebase improving maintainability Introduced automated linting and formatting Education \u0026amp; Self-Learning\n📅 2018 - 2020\nComputer Science fundamentals Web development bootcamps Open source contributions Personal projects and experimentation 🎓 Education \u0026amp; Certifications # Formal Education # Computer Science / Related Field — Institution Name Graduated: 2020 Focus: Software Engineering, Data Structures, Algorithms Certifications # AWS Certified Developer (Optional - add if you have it) Kubernetes Certification (Optional) Other relevant certifications Online Learning # Coursera, edX, Udemy courses Official documentation deep-dives Conference talks and workshops Open source project contributions 🏆 Key Projects # For detailed project information, check out my Projects page.\nHighlights:\n🚀 Task Management API - Production-ready REST API with FastAPI 📊 Dashboard Analytics - React-based data visualization ⚙️ CI/CD Pipeline - Automated deployment with GitHub Actions 📈 Continuous Learning # I\u0026rsquo;m constantly expanding my skill set:\nCurrently Learning:\nRust programming language Machine Learning fundamentals Advanced Kubernetes patterns WebAssembly Next on the List:\nGraphQL advanced patterns Serverless architectures Blockchain development basics Mobile development (React Native) 🤝 Collaboration Style # Communication: Clear, documented, async-first Code Reviews: Constructive, educational, thorough Problem Solving: Analytical, collaborative, user-focused Work Environment: Remote-friendly, flexible, results-oriented 💼 Interested in working together? Let\u0026rsquo;s connect and discuss opportunities!\n","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/skills/","section":"Skills \u0026 Experience","summary":"A comprehensive overview of my expertise in sales, presales, solution engineering, and rapid prototyping","title":"Skills \u0026 Experience","type":"skills"},{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/static-site/","section":"Tags","summary":"","title":"Static-Site","type":"tags"},{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/","section":"Tags","summary":"","title":"Tags","type":"tags"},{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/web/","section":"Tags","summary":"","title":"Web","type":"tags"},{"content":"","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/tags/web-development/","section":"Tags","summary":"","title":"Web-Development","type":"tags"},{"content":" Sometimes the best choice is the simplest one - here\u0026rsquo;s why I went with Hugo and Blowfish When it came time to build my personal portfolio, I had several options: React-based frameworks, WordPress, Webflow, or a traditional static site generator. After careful consideration, I chose Hugo with the Blowfish theme. Here\u0026rsquo;s why.\nThe Requirements # Before diving into the decision, let me share what I needed:\n✅ Fast Performance - No one likes a slow website\n✅ Easy Content Management - Markdown-based, version-controlled\n✅ Customization - Ability to make it uniquely mine\n✅ Low Maintenance - No database, no updates breaking things\n✅ SEO Friendly - Good meta tags, sitemaps, structured data\n✅ Cost Effective - Free hosting on Codeberg Pages\n✅ Developer-Friendly - Fits naturally into my workflow\nWhy Hugo? # Blazing Fast Build Times # Hugo is written in Go, which makes it incredibly fast. My entire site builds in under a second:\n$ hugo --timing Total in 847 ms Compare that to Jekyll (Ruby) or Gatsby (Node.js), which can take 10-30 seconds for similar-sized sites.\nSimple Content Structure # Hugo uses plain Markdown files organized in a logical directory structure:\ncontent/ ├── _index.md ├── about/ │ └── index.md ├── projects/ │ └── my-project/ │ └── index.md └── posts/ └── my-article/ └── index.md No database, no complex CMS - just files I can edit in any text editor and version control with Git.\nZero Runtime Dependencies # Once Hugo builds the site, you get pure HTML, CSS, and JavaScript. No server-side processing, no database queries, no PHP execution. Just fast, static files.\nExcellent Documentation # Hugo\u0026rsquo;s documentation is comprehensive and well-organized. I was productive within hours, not days.\nWhy Blowfish Theme? # Feature-Rich Out of the Box # Blowfish comes with features I\u0026rsquo;d otherwise have to build myself:\n🌓 Dark/Light Mode - Automatic with manual override 📱 Responsive Design - Mobile-first approach 🔍 Client-side Search - Fast, no server needed 📊 Multiple Layout Options - Profile, hero, card, background 🏷️ Taxonomies - Tags and categories 📖 Table of Contents - Auto-generated for articles ♿ Accessible - WCAG-compliant Active Development # The theme is actively maintained with regular updates and improvements. The GitHub repository has a vibrant community.\nCustomization Flexibility # Blowfish follows Hugo\u0026rsquo;s template override convention. I can customize any part by creating matching files in my layouts/ directory:\nlayouts/ └── partials/ └── head/ └── custom.html ← My custom meta tags Performance Optimized # The theme automatically:\nOptimizes images with Hugo Pipes Minifies CSS/JS in production Generates responsive image sizes Implements lazy loading Uses efficient fingerprinting The Alternative I Considered # Next.js + MDX # Pros: More interactive features, React ecosystem\nCons: Overkill for a portfolio, complex deployment, larger bundle size\nWordPress # Pros: Easy content editing, tons of themes\nCons: Security concerns, performance overhead, constant updates\nWebflow # Pros: Visual editor, no coding required\nCons: Expensive, vendor lock-in, limited customization\nAstro # Pros: Modern, fast, framework-agnostic\nCons: Younger ecosystem, fewer themes\nMy Setup # Here\u0026rsquo;s my current configuration:\n# hugo.toml baseURL = \u0026#39;https://toulcit.codeberg.page/portfolio/\u0026#39; theme = \u0026#39;blowfish\u0026#39; enableRobotsTXT = true [params] colorScheme = \u0026#34;blowfish\u0026#34; defaultAppearance = \u0026#34;dark\u0026#34; autoSwitchAppearance = true I\u0026rsquo;ve added custom enhancements:\n✅ Enhanced SEO meta tags with GEO location ✅ Structured data (JSON-LD) ✅ Custom CSS animations and visual effects ✅ jsDelivr CDN integration ✅ Dynamic project showcase from GitHub/Codeberg APIs The Results # Performance Scores # Running Lighthouse on my portfolio:\nPerformance: 98/100 Accessibility: 100/100 Best Practices: 100/100 SEO: 100/100 Build Time # My entire site with 10+ pages builds in under 1 second.\nHosting Cost # $0/month - Hosted on Codeberg Pages for free with custom domain support.\nGetting Started Yourself # Want to build a similar portfolio? Here\u0026rsquo;s your roadmap:\nInstall Hugo: brew install hugo (Mac) or download from gohugo.io Create Site: hugo new site my-portfolio Add Blowfish: Clone as git submodule Configure: Copy my hugo.toml as starting point Add Content: Create pages in content/ Deploy: Push to GitHub/Codeberg and enable Pages Or just fork my repository and customize it!\nFinal Thoughts # Choosing Hugo and Blowfish was one of the best decisions for my portfolio. It\u0026rsquo;s fast, simple, customizable, and free. I can focus on creating content instead of fighting with complex build systems or CMS updates.\nFor a developer portfolio, you want something that:\nShows off your technical knowledge Is easy to maintain Performs excellently Looks professional Hugo + Blowfish delivers on all fronts. 🎯\n💬 Questions? Get in touch or check out the source code\nFurther Reading # Hugo Official Site Blowfish Theme Documentation Codeberg Pages Documentation StaticGen Comparison ","date":"April 8, 2026","externalUrl":null,"permalink":"/profile/posts/hugo-blowfish-choice/","section":"Blog","summary":"Exploring the benefits of static site generation, Hugo’s performance advantages, and why Blowfish is the perfect theme for developer portfolios","title":"Why I Chose Hugo and Blowfish for My Portfolio","type":"posts"},{"content":"","date":"March 15, 2026","externalUrl":null,"permalink":"/profile/tags/api/","section":"Tags","summary":"","title":"Api","type":"tags"},{"content":"","date":"March 15, 2026","externalUrl":null,"permalink":"/profile/tags/backend/","section":"Tags","summary":"","title":"Backend","type":"tags"},{"content":"","date":"March 15, 2026","externalUrl":null,"permalink":"/profile/tags/fastapi/","section":"Tags","summary":"","title":"Fastapi","type":"tags"},{"content":"","date":"March 15, 2026","externalUrl":null,"permalink":"/profile/tags/postgresql/","section":"Tags","summary":"","title":"Postgresql","type":"tags"},{"content":"","date":"March 15, 2026","externalUrl":null,"permalink":"/profile/tags/python/","section":"Tags","summary":"","title":"Python","type":"tags"},{"content":" A production-ready REST API demonstrating modern backend development practices Overview # The Task Management API is a comprehensive backend service that allows users to create, manage, and organize tasks. Built with FastAPI, it showcases modern Python async programming, database design, and API best practices.\nTechnologies Used # Python 3.11+ - Core language with type hints FastAPI - Modern, fast web framework for building APIs PostgreSQL - Relational database with SQLAlchemy ORM Pydantic - Data validation using Python type annotations JWT Authentication - Secure token-based authentication Docker - Containerization for deployment Pytest - Comprehensive test suite Features # ✅ CRUD Operations - Full Create, Read, Update, Delete functionality 🔐 JWT Authentication - Secure user registration and login 📊 Advanced Filtering - Search, sort, and paginate tasks 🏷️ Categories \u0026amp; Tags - Organize tasks with custom metadata 👥 User Isolation - Each user has their own task space 📝 Input Validation - Comprehensive data validation with Pydantic 🔄 Async Operations - Non-blocking database queries 📖 Auto-generated Docs - Swagger UI and ReDoc documentation 🐳 Docker Ready - Containerized with docker-compose Architecture # task-api/ ├── app/ │ ├── api/ # Route handlers │ ├── core/ # Config, security, dependencies │ ├── db/ # Database session, models │ ├── schemas/ # Pydantic models │ └── services/ # Business logic ├── tests/ # Test suite ├── alembic/ # Database migrations ├── Dockerfile ├── docker-compose.yml └── requirements.txt API Endpoints # Method Endpoint Description POST /api/v1/auth/register Register new user POST /api/v1/auth/login Login and get JWT token GET /api/v1/tasks List all tasks (paginated) POST /api/v1/tasks Create new task GET /api/v1/tasks/{id} Get task by ID PUT /api/v1/tasks/{id} Update task DELETE /api/v1/tasks/{id} Delete task GET /api/v1/tasks/search Search tasks Getting Started # Prerequisites # Python 3.11+ PostgreSQL 14+ Docker \u0026amp; Docker Compose (optional) Local Setup # # Clone the repository git clone https://github.com/jahruhn/task-api.git cd task-api # Create virtual environment python -m venv venv source venv/bin/activate # Install dependencies pip install -r requirements.txt # Set up environment variables cp .env.example .env # Edit .env with your database credentials # Run database migrations alembic upgrade head # Start the development server uvicorn app.main:app --reload Using Docker # # Start all services docker-compose up -d # API will be available at http://localhost:8000 # API Docs at http://localhost:8000/docs Testing # # Run the test suite pytest # With coverage pytest --cov=app --cov-report=html Challenges \u0026amp; Learnings # Database Connection Pooling: Initially faced performance issues with database connections under load. Implemented connection pooling with SQLAlchemy\u0026rsquo;s QueuePool, which improved response times by 40%.\nAsync vs Sync: Learned when to use async database operations vs synchronous ones. Not all operations benefit from async, and understanding the tradeoffs was crucial.\nAuthentication Security: Implemented password hashing with bcrypt, JWT token expiration, and refresh token rotation to ensure security best practices.\nFuture Enhancements # WebSocket support for real-time updates Task sharing between users File attachments to tasks GraphQL API endpoint Rate limiting and API keys Export to CSV/PDF Links # Source Code: GitHub Repository API Documentation: Live Swagger UI Postman Collection: API Tests 💡 Note: This is a sample project page. Replace with your actual project details and update the links above.\n","date":"March 15, 2026","externalUrl":null,"permalink":"/profile/projects/task-api/","section":"Projects","summary":"A production-ready REST API with authentication, database integration, and comprehensive documentation","title":"Task Management API","type":"projects"},{"content":"","date":"February 20, 2026","externalUrl":null,"permalink":"/profile/tags/charts/","section":"Tags","summary":"","title":"Charts","type":"tags"},{"content":"","date":"February 20, 2026","externalUrl":null,"permalink":"/profile/tags/dashboard/","section":"Tags","summary":"","title":"Dashboard","type":"tags"},{"content":" An interactive analytics dashboard demonstrating modern frontend development Overview # The Dashboard Analytics App is a comprehensive data visualization platform that presents business metrics and KPIs in an intuitive, interactive interface. Built with React and TypeScript, it showcases modern frontend architecture, state management, and data visualization techniques.\nTechnologies Used # React 18 - Component-based UI library TypeScript - Type-safe JavaScript Tailwind CSS - Utility-first CSS framework Recharts - Composable charting library React Query - Data fetching and caching Zustand - Lightweight state management Vite - Fast build tool and dev server Storybook - Component documentation and testing Features # 📊 Real-time Metrics - Live data updates with WebSocket integration 📈 Interactive Charts - Line, bar, pie, and area charts with tooltips 🎨 Dark/Light Mode - Theme switching with smooth transitions 📱 Responsive Design - Works seamlessly on desktop, tablet, and mobile 🔍 Data Filtering - Date range picker and custom filters 📤 Export Options - Download charts as images or export data as CSV 🔔 Alert System - Configurable notifications for threshold breaches 💾 Persistent Settings - User preferences saved to localStorage Screenshots # Main dashboard view showing key metrics and performance charts\nDetailed analytics page with advanced filtering options\nArchitecture # src/ ├── components/ # Reusable UI components │ ├── charts/ # Chart components (LineChart, BarChart, etc.) │ ├── layout/ # Layout components (Header, Sidebar, etc.) │ └── ui/ # Base UI components (Button, Card, etc.) ├── hooks/ # Custom React hooks ├── pages/ # Page components ├── services/ # API services and data fetching ├── store/ # Zustand state management ├── types/ # TypeScript type definitions └── utils/ # Helper functions Key Components # Metrics Cards # Display KPIs with trend indicators and sparklines:\ninterface MetricCardProps { title: string; value: number; trend: \u0026#39;up\u0026#39; | \u0026#39;down\u0026#39; | \u0026#39;stable\u0026#39;; change: number; sparkline: number[]; } Chart Container # Reusable wrapper for all chart types with consistent styling:\n\u0026lt;ChartContainer title=\u0026#34;Revenue Over Time\u0026#34; description=\u0026#34;Monthly revenue for the current year\u0026#34; exportable={true} \u0026gt; \u0026lt;LineChart data={revenueData} /\u0026gt; \u0026lt;/ChartContainer\u0026gt; Getting Started # Prerequisites # Node.js 18+ npm or yarn Installation # # Clone the repository git clone https://github.com/jahruhn/dashboard-app.git cd dashboard-app # Install dependencies npm install # Start development server npm run dev # The app will be available at http://localhost:5173 Build for Production # # Create optimized production build npm run build # Preview the production build npm run preview Testing # # Run unit tests npm test # Run end-to-end tests npm run test:e2e # Generate coverage report npm run test:coverage Performance Optimizations # Code Splitting: Implemented React.lazy() and Suspense for route-based code splitting, reducing initial bundle size by 60%.\nMemoization: Used useMemo() and useCallback() strategically to prevent unnecessary re-renders, especially for expensive chart calculations.\nVirtual Scrolling: Implemented windowing for large data tables using react-window, enabling smooth scrolling through thousands of rows.\nImage Optimization: Leveraged Vite\u0026rsquo;s built-in asset optimization and lazy loading for chart screenshots.\nChallenges \u0026amp; Learnings # State Management Complexity: Started with Context API but hit performance bottlenecks with frequent updates. Migrated to Zustand, which provided better performance and a cleaner API for our use case.\nChart Performance: Rendering large datasets in charts caused performance issues. Implemented data aggregation and sampling to display meaningful patterns without overwhelming the browser.\nResponsive Charts: Making charts work across all screen sizes was challenging. Created a custom responsive container that adjusts chart dimensions and configuration based on viewport size.\nFuture Enhancements # Real-time collaboration features Custom dashboard builder (drag-and-drop widgets) Advanced analytics with machine learning predictions Mobile app version (React Native) Multi-language support (i18n) Accessibility improvements (WCAG 2.1 AA) Links # Live Demo: Dashboard Demo Source Code: GitHub Repository Component Docs: Storybook 💡 Tip: This is a template project page. Replace with your actual project, add real screenshots, and update all the links.\n","date":"February 20, 2026","externalUrl":null,"permalink":"/profile/projects/dashboard-app/","section":"Projects","summary":"Interactive data visualization dashboard with real-time metrics, charts, and responsive design","title":"Dashboard Analytics App","type":"projects"},{"content":"","date":"February 20, 2026","externalUrl":null,"permalink":"/profile/tags/frontend/","section":"Tags","summary":"","title":"Frontend","type":"tags"},{"content":"","date":"February 20, 2026","externalUrl":null,"permalink":"/profile/tags/react/","section":"Tags","summary":"","title":"React","type":"tags"},{"content":"","date":"February 20, 2026","externalUrl":null,"permalink":"/profile/tags/tailwind/","section":"Tags","summary":"","title":"Tailwind","type":"tags"},{"content":"","date":"February 20, 2026","externalUrl":null,"permalink":"/profile/tags/typescript/","section":"Tags","summary":"","title":"Typescript","type":"tags"},{"content":"","date":"January 10, 2026","externalUrl":null,"permalink":"/profile/tags/automation/","section":"Tags","summary":"","title":"Automation","type":"tags"},{"content":" Streamlining development workflows with automated CI/CD pipelines Overview # The CI/CD Pipeline Automation project demonstrates how to build a complete automated workflow that handles testing, building, security scanning, and deployment of applications. This project showcases DevOps best practices and infrastructure-as-code principles.\nProblem Statement # Manual deployment processes are error-prone, time-consuming, and inconsistent. This project automates the entire software delivery pipeline to enable:\nFast, reliable deployments Consistent build environments Automated testing and quality gates Security scanning before deployment Rollback capabilities Deployment notifications and monitoring Technologies Used # GitHub Actions - CI/CD workflow automation Docker - Containerization of applications Kubernetes - Container orchestration Helm - Kubernetes package management Terraform - Infrastructure as Code SonarQube - Code quality and security analysis Trivy - Container vulnerability scanning Prometheus \u0026amp; Grafana - Monitoring and alerting ArgoCD - GitOps continuous deployment Pipeline Stages # graph LR A[Code Push] --\u0026gt; B[Lint \u0026amp; Test] B --\u0026gt; C{Tests Pass?} C --\u0026gt;|Yes| D[Build Docker Image] C --\u0026gt;|No| Z[Notify Failure] D --\u0026gt; E[Security Scan] E --\u0026gt; F{Vulnerabilities?} F --\u0026gt;|None/Critical=0| G[Push to Registry] F --\u0026gt;|Critical Found| Z G --\u0026gt; H[Deploy to Staging] H --\u0026gt; I[Integration Tests] I --\u0026gt; J{Tests Pass?} J --\u0026gt;|Yes| K[Deploy to Production] J --\u0026gt;|No| Z K --\u0026gt; L[Health Checks] L --\u0026gt; M[Notify Success] GitHub Actions Workflow # name: CI/CD Pipeline on: push: branches: [main, develop] pull_request: branches: [main] jobs: test: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - name: Set up Node.js uses: actions/setup-node@v4 with: node-version: \u0026#39;20\u0026#39; cache: \u0026#39;npm\u0026#39; - name: Install dependencies run: npm ci - name: Run linter run: npm run lint - name: Run tests run: npm test -- --coverage - name: Upload coverage uses: codecov/codecov-action@v3 build: needs: test runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - name: Build Docker image run: docker build -t myapp:${{ github.sha }} . - name: Run Trivy vulnerability scanner uses: aquasecurity/trivy-action@master with: image-ref: \u0026#39;myapp:${{ github.sha }}\u0026#39; format: \u0026#39;table\u0026#39; exit-code: \u0026#39;1\u0026#39; ignore-unfixed: true severity: \u0026#39;CRITICAL\u0026#39; - name: Push to registry run: | docker tag myapp:${{ github.sha }} registry.example.com/myapp:${{ github.sha }} docker push registry.example.com/myapp:${{ github.sha }} deploy: needs: build if: github.ref == \u0026#39;refs/heads/main\u0026#39; runs-on: ubuntu-latest steps: - name: Deploy to Kubernetes uses: azure/setup-kubectl@v3 - name: Update deployment run: | kubectl set image deployment/myapp \\ myapp=registry.example.com/myapp:${{ github.sha }} \\ -n production kubectl rollout status deployment/myapp -n production --timeout=300s Infrastructure as Code # Terraform Configuration # resource \u0026#34;aws_eks_cluster\u0026#34; \u0026#34;main\u0026#34; { name = \u0026#34;production-cluster\u0026#34; role_arn = aws_iam_role.eks_cluster.arn vpc_config { subnet_ids = aws_subnet.private[*].id } } resource \u0026#34;helm_release\u0026#34; \u0026#34;application\u0026#34; { name = \u0026#34;myapp\u0026#34; repository = \u0026#34;https://charts.example.com\u0026#34; chart = \u0026#34;myapp\u0026#34; namespace = \u0026#34;production\u0026#34; set { name = \u0026#34;image.tag\u0026#34; value = var.app_version } } Kubernetes Deployment # apiVersion: apps/v1 kind: Deployment metadata: name: myapp namespace: production spec: replicas: 3 strategy: type: RollingUpdate rollingUpdate: maxSurge: 1 maxUnavailable: 0 template: spec: containers: - name: myapp image: registry.example.com/myapp:latest resources: requests: memory: \u0026#34;256Mi\u0026#34; cpu: \u0026#34;250m\u0026#34; limits: memory: \u0026#34;512Mi\u0026#34; cpu: \u0026#34;500m\u0026#34; livenessProbe: httpGet: path: /health port: 8080 initialDelaySeconds: 30 periodSeconds: 10 readinessProbe: httpGet: path: /ready port: 8080 initialDelaySeconds: 5 periodSeconds: 5 Getting Started # Prerequisites # GitHub repository Docker installed locally kubectl configured for your cluster AWS/GCP/Azure account (for cloud resources) Local Development # # Clone the repository git clone https://github.com/jahruhn/cicd-pipeline.git cd cicd-pipeline # Start local Kubernetes (Docker Desktop or kind) kubectl cluster-info # Deploy locally helm install myapp ./charts/myapp \\ --namespace development \\ --create-namespace # Port-forward to access locally kubectl port-forward svc/myapp 8080:80 -n development Set Up GitHub Actions # Add repository secrets:\nAWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY DOCKER_REGISTRY_PASSWORD KUBE_CONFIG_DATA Push to main branch to trigger pipeline\nMonitoring \u0026amp; Observability # Prometheus Metrics # apiVersion: monitoring.coreos.com/v1 kind: ServiceMonitor metadata: name: myapp spec: selector: matchLabels: app: myapp endpoints: - port: metrics interval: 15s Grafana Dashboard # Key metrics tracked:\nDeployment frequency Deployment success rate Mean time to recovery (MTTR) Lead time for changes Application performance (latency, throughput, errors) Challenges \u0026amp; Learnings # Secrets Management: Initially stored secrets in GitHub Actions, but migrated to HashiCorp Vault for better security, auditability, and rotation policies.\nRollback Strategy: Implemented automatic rollback when health checks fail after deployment. Learned the importance of database migration strategies that support both forward and backward compatibility during rollbacks.\nPipeline Performance: Optimized pipeline execution time from 25 minutes to 8 minutes by:\nImplementing job parallelization Caching dependencies Using faster runners Conditional job execution Best Practices Implemented # ✅ Immutable Deployments: Each build creates a new Docker image with unique tag\n✅ Infrastructure as Code: All infrastructure defined in version-controlled files\n✅ Environment Parity: Local, staging, and production environments are identical\n✅ Automated Rollbacks: Health check failures trigger automatic rollback\n✅ Security First: Vulnerability scanning before deployment\n✅ Observability: Comprehensive logging, metrics, and tracing\n✅ Documentation: Runbooks for common operational tasks\nFuture Enhancements # Implement canary deployments Add chaos engineering tests Multi-region deployment support GitOps with ArgoCD (instead of push-based deploys) Cost monitoring and optimization Automated performance testing in pipeline Links # Source Code: GitHub Repository Documentation: Pipeline Docs Terraform Modules: Infrastructure Code 💡 Note: This is a sample project demonstrating DevOps skills. Replace with your actual CI/CD implementation and update all links.\n","date":"January 10, 2026","externalUrl":null,"permalink":"/profile/projects/cicd-pipeline/","section":"Projects","summary":"End-to-end CI/CD automation including testing, building, security scanning, and deployment","title":"CI/CD Pipeline Automation","type":"projects"},{"content":"","date":"January 10, 2026","externalUrl":null,"permalink":"/profile/tags/cicd/","section":"Tags","summary":"","title":"Cicd","type":"tags"},{"content":"","date":"January 10, 2026","externalUrl":null,"permalink":"/profile/tags/devops/","section":"Tags","summary":"","title":"Devops","type":"tags"},{"content":"","date":"January 10, 2026","externalUrl":null,"permalink":"/profile/tags/docker/","section":"Tags","summary":"","title":"Docker","type":"tags"},{"content":"","date":"January 10, 2026","externalUrl":null,"permalink":"/profile/tags/github-actions/","section":"Tags","summary":"","title":"Github-Actions","type":"tags"},{"content":"","date":"January 10, 2026","externalUrl":null,"permalink":"/profile/tags/kubernetes/","section":"Tags","summary":"","title":"Kubernetes","type":"tags"},{"content":"","externalUrl":null,"permalink":"/profile/categories/","section":"Categories","summary":"","title":"Categories","type":"categories"},{"content":"","externalUrl":null,"permalink":"/profile/series/","section":"Series","summary":"","title":"Series","type":"series"}]