Patrick D.-Senior AI Software Engineer · Full-Stack · Agentic AI · MCP · LLM
Check rate
Experience
Fullstack Developer
- SPA for automated communication of medical findings with role-based access (Sanctum)
- Server-side LLM integration (OpenRouter) with structured processing
- Automated sending via SMS/voice call (Twilio, ElevenLabs) with queue + status retry
- Full test coverage with 80+ documented test cases
Technologies: PHP, Laravel, LLM API (OpenRouter), Twilio, ElevenLabs, Laravel Sanctum, PHPUnit, Playwright, Docker, REST
Developer
- Independent MCP server with 20 tools (CRUD, scripts, schema introspection, batch processing)
- LLM tool use via Model Context Protocol; compatible with Claude Code, Cursor, and Windsurf
- Context engineering & tool restrictions per database, on-premise (no cloud proxy)
- Builds agentic AI infrastructure independently, rather than just using it
Technologies: TypeScript, Node.js, @modelcontextprotocol/sdk (MCP), Zod, OData v4, Claude Code, Anthropic, stdio
Fullstack Developer
Internal management dashboard
Internal application / event management
- Dashboard with state logic (missing information visible for each record)
- Automatic generation of briefing emails as .eml files
- Connection to the existing system via OData
Technologies: Laravel 13, Inertia 2, React 19, TypeScript, Tailwind 4, SQLite, OData, MCP, shadcn/ui, Vite
Fullstack Developer
Microservice platform with banking and insurance integrations
Mobility / Leasing
- Laravel microservice for orchestrating leasing workflows (async via RabbitMQ)
- Reusable Composer package for standardized RabbitMQ integration
- Migrated deployment from Cloud Foundry to Kubernetes (GitOps)
- Built a central, versioned CI/CD template library
- Agent-based AI (Claude Code, MCP, Superpowers) used productively in the development process
- Laravel microservice + Angular frontend; developed and automatically tested REST APIs
- → 100% automated case processing (previously handled manually by email)
Technologies: PHP 8.3, Laravel 11, RabbitMQ, Docker, Kubernetes, Helm, ArgoCD, GitLab CI/CD, HubSpot API, JWT, PHPStan, Vite, Alpine.js, Tailwind CSS, REST, Angular, TypeScript, Claude Code, MCP, Superpowers
Fullstack Developer (Solo)
Streaming comparison portal (own product)
Media / Consumer app
- Product-driven platform (multiple Laravel apps, Filament admin, Vue 3 back office) from concept to operation
- Distributed Scrapy crawler with rotating proxies (Zyte) + ~15 Python microservices/jobs
- Search engine using Laravel Scout + Meilisearch/Elasticsearch, authentication via Auth0
- Anomaly detection (>5% new entries → human review), batch writing
- → Processed over 1 million prices/availability records per day
- → Improved load times by 95%, halved database costs
- Modernized production platform with an agentic AI workflow (Claude Code, Superpowers)
- Versioned REST API (v1) with Laravel Sanctum, token authentication, and abilities/scopes
- Integrated Redis caching, Pusher (WebSockets), and Sentry
Technologies: PHP, Laravel, MySQL, MariaDB, Python, Scrapy, AWS (EC2, ECS/Fargate, RDS, S3, CloudFront, Lambda), Docker, GitLab CI/CD, Tailwind, Alpine.js, Livewire, Filament, Laravel Scout, Auth0, Vue 3, Pinia, Elasticsearch, Meilisearch, Playwright, Vitest, Redis, Pusher, Sentry
Full-Stack Developer
Online Customer Center & Website (New Development)
Energy Supply
- Migration from PHP to a Java/Angular architecture
- Moved infrastructure to the cloud and introduced Git/Docker/CI-CD
- Optimized the online customer center based on penetration test results
- → Approximately 2.5× faster loading times, more new customer sign-ups
Technologies: PHP, Angular, Vue.js, TypeScript, Java, FirstSpirit, MySQL, SAML, SAP OData, AWS, Azure, GitLab CI/CD, Tailwind CSS, Bootstrap, Storybook, Cypress, SonarQube, Jira, REST, SOAP
Lead Full-Stack Developer
Multi-Tenant SaaS Platform for Municipalities
Public Administration / E-Government
- New development as a multi-tenant SaaS solution
- Fair allocation through an established matching algorithm (Gale-Shapley)
- Introduced code reviews, CI/CD, and comprehensive monitoring
- → 50+ tenants/municipalities on a shared platform
- → Issues resolved within a few hours through monitoring
Technologies: PHP, Laravel, MySQL, MariaDB, JavaScript, jQuery, Bootstrap, SCSS, Docker, GitLab, CI/CD, Vite, Webpack, PHPUnit, Laravel Dusk, Playwright, NGINX, Accessibility, REST
TYPO3 Lead Developer (Lead for 2 Developers)
TYPO3 Development in a Dockerized Microservice Environment
Retail (DIY Store)
- Maintenance and further development of the CMS
- Development and operation of multiple microfrontends in a Dockerized microservice environment
- → Reduced time-to-market for content updates (editors make changes directly without developer involvement)
- → Introduced zero-downtime deployments (features delivered without maintenance windows)
Technologies: TYPO3, PHP, extbase, fluid, Golang, Docker, Docker Compose, Microfrontends, Git, Bamboo, GitLab, Jira, CI/CD, Webpack, Handlebars, jQuery, JavaScript, TypeScript, SCSS, HTML5, eCommerce
TYPO3 Full-Stack Developer (Press Portal Lead)
Accessible City Homepage & Press Portal
Public Sector / City
- Accessible frontend implementation according to BITV 2.0
- Development and maintenance of custom TYPO3 extensions, in2publish workflow states (Stage → Live)
- PDF generation from TYPO3 (mPDF), mass email delivery (newsletter2go/Brevo)
- → Several hundred thousand press releases sent reliably every month
- → Eliminated recurring system outages during peak loads
Technologies: TYPO3 v10-v11, PHP, extbase, fluid, Typoscript, in2publish, georginger/news, mPDF, jQuery, JavaScript, Bootstrap, HTML5, CSS3, Docker, GitLab, CI/CD, NGINX, BITV 2.0, REST
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Government and Administration, Media and Entertainment, Information Technology, Energy, Automotive, and Banking and Finance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Operations.
Summary
Senior Fullstack Engineer with over 20 years of experience designing, developing, and operating web applications – from the frontend (Vue, React, TypeScript) through the backend (PHP, Laravel, Node.js, Python) to CI/CD and cloud infrastructure. I quickly get familiar with established codebases, think in terms of clean architecture, and deliver maintainable solutions that hold up in production. Experience ranging from solo ownership to lead roles in larger teams, across industries from e-government and energy to mobility. My additional focus is agent-based AI in software development: I integrate LLMs, tool use, and structured agent workflows into products and development processes in a productive way – including developing my own MCP servers (Model Context Protocol) and working with Claude Code, Superpowers, and LLM APIs. I review and document my results – AI speeds things up, but experience makes the decisions.
Skills
- Ai & Agentic Development: Claude Code · Mcp (Own Server Development) · Superpowers · Anthropic Sdk · Llm Apis (Openrouter, Elevenlabs) · Tool Use · Context Engineering · Ai-Assisted Code Analysis & Test Generation
- Backend: Python · Php / Laravel · Node.Js / Typescript · Rest / Openapi · Message Queues (Rabbitmq)
- Cloud-Native & Devops: Kubernetes · Helm · Argocd · Gitops · Docker · Gitlab Ci/Cd · Aws · Azure
- Frontend: Typescript · React · Angular · Vue 3 · Tailwind · Inertia / Livewire
- Databases: Mysql / Mariadb · Redis · Elasticsearch / Meilisearch · Sqlite
- Testing & Quality: Playwright · Cypress · Phpunit · Vitest · Code Reviews · Ci/Cd Integration
- Domain & Methods: Healthcare Workflows · Agile / Scrum · Product Ownership · Technical Lead & Mentoring
Languages
Education
IT Specialist in Application Development · IT Specialist in Application Development
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Patrick is based in Cologne, Germany and can operate in on-site, hybrid, and remote work models.
Patrick speaks the following languages: German (Native), English (Intermediate).
Patrick has at least 11 years of experience. During this time, Patrick has worked in at least 7 different roles. The average length of individual experience is 1 year and 2 months. Note that Patrick may not have shared all experience and actually has more experience.
Based on recent experience, Patrick would be well-suited for roles such as: Fullstack Developer, Developer, Fullstack Developer (Solo).
Patrick's most recent position is Fullstack Developer.
Patrick is most experienced in industries like Government and Administration, Media and Entertainment, and Information Technology. Patrick also has some experience in Energy, Automotive, and Banking and Finance.
Patrick is most experienced in business areas like Information Technology, Product Development, and Operations. Patrick also has some experience in Quality Assurance.
Patrick has recently worked in industries like Government and Administration, Media and Entertainment, and Information Technology.
Patrick has recently worked in business areas like Information Technology, Product Development, and Operations.
Patrick attended education in IT Specialist in Application Development.
Patrick is immediately available full-time for suitable projects.
Daily rate distribution
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Average rates for similar positions
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The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 10 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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