Patrick L.-Senior AI Software Engineer with 9 years of experience delivering practical AI products for enterprise and public sector
Check rate
Experience
Senior GenAI Fullstack Developer
SBH (Schulbau Hamburg)
Remote freelance role focused on Agentic AI strategy, secure application patterns, and reusable agentic workflows for a government agency.
- Development and implementation of an open-source Agentic AI strategy for a government agency, with a focus on GDPR, security, and self-hosted solutions
- Development of reusable agentic workflows and business applications that enable non-technical employees to solve business problems independently
- Implementation of nine business applications with Single Sign-On (SSO) and Azure PostgreSQL integration on Hetzner Linux servers
Techstack: Python, Streamlit, Anthropic SDK (Claude), Azure, Linux, PostgreSQL, MS SQL, Angular
Senior GenAI Fullstack Developer
Nexref GmbH
Remote freelance role building a vendor independent AI integration and abstraction service as the central AI backbone for the platform's B2B Conversational AI agent, including an MCP server for AI agent use cases.
- Conception, implementation, and ongoing development of a vendor independent AI service architecture as the central interface between the frontend and external AI systems (e.g., Plug&Plai, Mistral)
- Technical backbone for the platform's Conversational AI agent built on Plug&Plai, enabling reliable and provider independent integration of AI functionality
- Stable foundation designed to enable a later change of AI provider and to support future product ideas
- Exposure of the integration API as an MCP server for AI agent use cases
- Maintenance and further development of Job Market Intelligence for B2B lead generation
- Technologies: Plug&Plai, Mistral, MCP Server Development, API Integration
Senior GenAI Fullstack Developer
RTL Tech
Remote freelance role focused on LLM based agent development, agent orchestration, API driven workflows, and cloud native delivery for an enterprise procurement use case.
- Development of the Procurement Agent flagship project, which saved RTL €280K on procurement deals.
- Deployment on GCP (Cloud Storage, Cloud Run) in a Kubernetes cluster, with Helm, GitLab Pipelines, and ArgoCD
- The Procurement Agent is used by five Procurement Managers and has 40 cases created to date. Development of AI agents with Next.js and FastAPI
- Agent orchestration with frameworks such as LangChain and CrewAI across multiple projects
- Technologies: Google Cloud Platform (GCP), Python, Next.js, Node.js, TypeScript, Helm, GitLab Pipelines, ArgoCD
Senior GenAI Fullstack Developer
Werbago GmbH
Remote freelance role building an AI-powered telephone agent for B2B lead outreach, integrating CRM, telephony, LLM guidance, and appointment scheduling.
- Automated B2B lead calls with scripted dialogue, objection handling, and appointment scheduling
- Integrated Zoho CRM, 3CX via SIP/VoIP, OpenAI, and Calendly APIs
- Set up and documented call logging, testing, and fault-tolerant operations
Senior GenAI Fullstack Developer
Molecular Search
Remote freelance role building LLM based candidate matching and recruiting automation for the pharmaceutical industry.
- Development of an LLM based matching system with documented API endpoints for targeted candidate search across more than 370,000 LinkedIn profiles.
- Architecture: Next.js frontend, ChromaDB vector database, BGE ICL embeddings, and GPT-4.1 API for semantic search through tool calling and structured retrieval workflows.
- Objective: Enable fast, targeted candidate discovery in the pharmaceutical industry and automate manual pre selection.
- Technologies: Python, FastAPI, Next.js, Node.js, TypeScript, React, ChromaDB, Embedding Models, OpenAI API
- Managed three Ubuntu Linux servers running open-source software in Docker containers
- Built two Custom GPTs with FastAPI and Python
- Built a German-language voice agent with VAPI and ElevenLabs for lead outreach
Demo: node.molecularsearch.com
Senior Fullstack Developer
Orbit Ventures for Münchener Rück
- Techstack: Nuxt, Vue 3, Typescript, Azure Postgres, Azure Web App Service, Azure Functions
- Further developed a Nuxt web application with Vue 3 as part of an A/B testing project
- Implemented three versions with random traffic distribution
- Developed numerous Nuxt pages and reusable Vue components
- Used Azure Postgres database and Azure Deployment Slots for efficient deployments
- Implemented registration and login functionality using Nuxt and Azure
- Stored page views via Azure Functions
- Provided CSV exports for product manager analysis of A/B test results
Senior Fullstack Developer
Edukat.io
- Remote role developing a Nuxt and Vue 3 web application.
Technologies: Nuxt, Vue 3, Typescript, Postgres (Supabase), SQL
- Further development of a Nuxt web application with Vue 3
- Use of an Supabase Postgres database for efficient data storage
Fullstack Developer
Ryze Digital
As Lead Developer in the AI Taskforce, I developed and deployed two AI products and an AWS-based automation project.
LLM-based chatbot integration using React and the Botpress API
Technologies: React, Node.js, TypeScript, Botpress API
Development and deployment of a context-aware conversational AI solution using Botpress as a knowledge-base engine
Development of customized React components for seamless integration of the chatbot into the existing website architecture
Designed chatbot response processing and conversational state management using React hooks and the Context API
Enterprise ChatGPT with Vector database integration
Technologies: React, TypeScript, Vector Database (LanceDB), Docker Compose
Customization of an open-source LLM platform into an enterprise-ready, private knowledge-management system
Integration of the chatbot into Microsoft Teams using the Microsoft Bot SDK for JavaScript
Development of custom SharePoint and Confluence connectors to extract, process, and transform enterprise documentation into vector embeddings
Implementation of LanceDB for semantic search and retrieval
AWS-based service automation for a publishing client
Technologies: AWS SDK, Node.js, TypeScript, AWS Transfer, AWS DynamoDB, AWS Lambda
- Designed and implemented a Dockerized Node.js microservice using AWS Transfer Family, S3, EventBridge, DynamoDB, and Lambda to automate a publishing workflow. Infrastructure was parameterized with Terraform as Infrastructure as Code.
Vue Frontend Developer
Servinga GmbH
Remote frontend development role for a platform to buy and manage virtual private servers.
- Technologies: Vue 3, Javascript, Vuex, Tailwind CSS
- Redesign of the frontend
- Migration from Vue 2 to Vue 3
- With Vue 3 (Javascript), Vuex, Tailwind CSS I developed a platform that allows customers to buy and manage virtual private servers easily and cost effectively
React Fullstack Developer
Check24
Fullstack development role in Düsseldorf focused on responsive React interfaces and testing.
Technologies: React, MobX, Vitest, Cypress, Bitbucket CI
- Development of responsive user interfaces with React 18 (Javascript / Typescript) and MobX
- Testing tickets on up to eight screen sizes, including cell phones, tablets and desktops
- Unit tests and smoke tests in Vitest and Cypress
Vue / Shopware 6 Developer
Realum.cloud GmbH
- Techstack: Nuxt.js, Vue 3, Shopware 6, Shopware API
- Increased sales for a chain of butcher shops by developing an immersive 3D shopping experience allowing customers to select meat products from a realistic shop counter perspective
- Integrated Shopware 6 to manage product catalogues and direct customer interaction via a 3D product view
- Customized and optimized Nuxt.js and Vue.js for a smooth user experience
- Implemented Shopware 6 API to query and manipulate data and ensure robust, scalable product integration
Fullstack Developer
Posterlab GmbH
Remote fullstack role developing an MVP for a scientific poster canvas for research teams.
- Development of an MVP for a scientific poster canvas with Vue and Nuxt 3 for research teams
- The MVP was implemented with Nuxt.js (Vue) with various AWS services
Technologies: Nuxt.js, Vue, Node.js (Javascript / Typescript)
CI/CD: Gitlab Pipelines
Fullstack Developer
Commerzbank AG
Fullstack development in a banking environment focused on Kotlin, Spring Boot, Angular, and cloud-native deployment.
- Focus on fullstack development with Kotlin and Angular 10
- Design and development of backend APIs with Kotlin and Spring Boot
- Deployment of Docker containers in a Kubernetes cluster on the Google Cloud Platform (GCP)
- Development of a modern, self-managed identity solution. This project, based on the Hyperledger Aries framework, is at the forefront of digital identity management and is financially supported by the Federal Ministry of Economics and Innovation.
Technologies: Kotlin, Spring Boot WebMVC and JPA, Spring Boot Security, Angular 12 (Javascript / Typescript)
Backend Developer
Solactive AG
- Techstack: Python, Apache Airflow, Automations, NoSQL
- Automated finance team workflows using Python and Apache Airflow to reduce time spent on tedious tasks
- Digitized a manual Excel process into an automated pipeline with data analysis using Pandas and Cassandra
- Developed and maintained internal libraries and FTP servers
AI Candidate Search Platform
- Semantic candidate matching and retrieval across more than 370,000 LinkedIn profiles. ChromaDB vector search with BGE ICL embeddings and GPT 4.1. Documented API endpoints for targeted candidate search and recruitment automation.
Active Sourcing Plus
- Job discovery by type, location, career level, and language. Employer job posting with a 30 day free listing.
Open Source App Gateway
- Cloudflare Workers based gateway for publishing and embedding applications.
Scientific Poster Canvas
- Structured fields for title, authors, introduction, methods, results, conclusion, references, and acknowledgements. A4 portrait and landscape layouts with a local first workflow and no login required.
Screenshot Asset Generator
- Upload and clipboard workflows for importing screenshots. Template based generation of polished visual assets.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Banking and Finance, Media and Entertainment, Government and Administration, Pharmaceutical, and Insurance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Business Intelligence, and Finance.
Summary
I am a senior GenAI Software Engineer with 9 years of experience delivering practical AI products for enterprise and public sector environments. I build conversational AI agents, LLM based automation, candidate matching and retrieval systems, and secure internal applications that connect business workflows with reliable software. My background combines hands on fullstack engineering with agent orchestration, cloud infrastructure, and production delivery across AWS, GCP, and Linux.
Skills
- Llm, Conversational Ai & Agentic Tooling: Conversational Ai, Agent Orchestration, Langchain, Llamaindex, Crewai, Openrouter, Openai Api, Openai Tool Calling, Anthropic Sdk (Claude), Mistral, Gpt-4.1, Mcp Development, Structured Workflows, Openchamber, Opencode.
- Llm Evaluation: Ragas, Langfuse.
- Backend Apis & Programming: Python, Fastapi, Node.Js, Typescript, Javascript, Kotlin, Spring Boot, Spring Boot Security, Rest Apis, Api Integration, Botpress Api, Mcp Servers.
- Frontend Frameworks & Ui: React, React 18, React 19, Next.Js, Next.Js 15, Next.Js 16, Vue 2, Vue 3, Nuxt.Js, Angular, Angular 10/12, Vuex, Pinia, Mobx, Tailwind Css, Css-In-Js, Shopware 6.
- Vector Databases & Retrieval: Chromadb, Lancedb, Qdrant, Indexing & Retrieval (Faiss / Hybrid Search), Context Engineering.
- Databases & Data Processing: Postgresql, Postgres, Ms Sql, Sql, Supabase, Dynamodb, Cassandra, Pandas, Data Analysis.
- Embeddings: Bge-Icl, Text-Embedding-3-Large.
- Cloud Deployment & Infrastructure: Aws, Aws Sdk, S3, Aws Transfer Family, Eventbridge, Aws Lambda, Google Cloud Platform (Gcp), Cloud Storage, Cloud Run, Azure, Azure Postgresql, Azure Functions, Azure Web App Service, Hetzner Linux, Ubuntu Linux, Terraform, Kubernetes Cluster, Docker, Docker Compose, Helm, Argocd.
- Ci/Cd, Testing & Delivery: Gitlab Pipelines, Bitbucket Ci, Build/Release Pipelines, Container Deployments, Secrets Management, Vitest, Vitesse, Playwright, Jest, Cypress, Unit Testing, E2e Testing, Smoke Testing.
- Integrations & Automation: Botpress, Microsoft Bot Sdk, Microsoft Teams, Sharepoint, Confluence, Vapi, Elevenlabs, 3cx Sip/Voip, Zoho Crm, Calendly Api, Apache Airflow, Cloudflare Workers.
- Security & Identity: Single Sign-On (Sso), Gdpr, Self-Hosted Solutions, Hyperledger Aries, Identity Solutions.
Languages
Education
University Mainz
Bachelor · Computer Science · Mainz, Germany · 1.8
Bachelor's thesis grade: 1.0 ; Bachelor's thesis: Technology analysis of the Vue.js frontend framework with JavaScript and TypeScript.
Applied computer science with a focus on data science and machine learning, as well as knowledge of algorithms, Java, databases, and software engineering.
University Frankfurt
Bachelor of Science · Computer Science · Frankfurt, Germany
Certifications & licenses
Graph Developer Associate
Apollo
Corda Certified Developer
R3
Vue.js Certified Developer
Vue Academy
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Patrick is based in Frankfurt am Main, Germany and prefers 100% remote projects.
Patrick speaks the following languages: German (Native), English (Advanced).
Patrick has at least 8 years of experience. During this time, Patrick has worked in at least 7 different roles and for 14 different companies. The average length of individual experience is 1 year and 7 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: Senior GenAI Fullstack Developer, Senior Fullstack Developer, Fullstack Developer.
Patrick's most recent position is Senior GenAI Fullstack Developer at SBH (Schulbau Hamburg).
In recent years, Patrick has worked for SBH (Schulbau Hamburg), Nexref GmbH, RTL Tech, Werbago GmbH, and Molecular Search.
Patrick is most experienced in industries like Information Technology, Banking and Finance, and Media and Entertainment. Patrick also has some experience in Food and Beverage, Pharmaceutical, and Government and Administration.
Patrick is most experienced in business areas like Information Technology, Product Development, and Finance. Patrick also has some experience in Business Intelligence.
Patrick has recently worked in industries like Information Technology, Banking and Finance, and Media and Entertainment.
Patrick has recently worked in business areas like Information Technology, Product Development, and Business Intelligence.
Patrick holds a Bachelor in Computer Science from University Mainz and a Bachelor in Computer Science from University Frankfurt.
Patrick has 6 certificates. Among them, these include: HashiCorp Certified: Terraform Associate (003), Microsoft Certified: Azure AI Fundamentals (AI-900), and Graph Developer Associate.
Patrick is immediately available full-time for suitable projects.
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Calculated based on our freelancers’ daily rates as of 27 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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