Christian W.
Senior Lead Software Engineer
Experience
Aug 2025 - Present
1 monthHybrid
Full-Stack Developer
WeDaVinci GmbH
- Planning and implementation of software architecture
- Development of microservices (Node.js, Express.js, Docker)
- Design and development of user interfaces
- Integration of payment providers (Stripe) into the WeDaVinci platform
- Refactoring legacy code, rewriting Angular to React.js
Apr 2025 - Jul 2025
4 monthsKarlsruhe, Germany
Senior Full-Stack Developer
Quantrefy GmbH
- Development of a scalable middleware to connect 5 core ESG data provider APIs using Python (FastAPI, Django, Flask)
- Data analysis, reporting, and forecasting of ESG data with PHP (Laravel, Symfony)
- Integration of the data into an existing data analytics platform (Angular 18)
- Implementation of comprehensive test automation with Pest/unit tests
- Development of REST APIs and microservices for a Laravel backend including GitHub
- Working with relational databases (PostgreSQL)
Sep 2024 - Mar 2025
7 monthsKarlsruhe, Germany
Backend Developer
dmTECH GmbH
- Co-development of the GenAI platform dmGPT with Python (FastAPI, Chainlit) and a React frontend
- Development of specialized AI assistants and integration of Claude for internal process optimization
- Built an incident management assistant for faster and more detailed ticket creation
- Integration of SharePoint data sources and building a robust service architecture with containerization
- Company-wide support for all departments and presentations at internal fairs and events
- Use of DevOps tools (GitLab, GitHub, CI/CD, Terraform) and technologies: Python (FastAPI, Pandas, Chainlit, SQLAlchemy), React (Redux), TypeScript, PostgreSQL, pgvector/Qdrant, Docker, Kubernetes, Helm, Azure
Nov 2022 - May 2024
1 year 7 monthsMunich, Germany
Technical Implementation Engineer
Cobrainer GmbH
- Integration of 4 complex enterprise customer systems into the Cobrainer talent platform
- Development of migration and integration APIs for seamless system connections
- Built an internal Python tool for managing customer integration data
- Development of a web-based service management tool (React, Python, FastAPI) to monitor ongoing integration projects
- OpenAI API integration for automated job descriptions and personalized sales demos
- Technologies: Python (Django, FastAPI, Pandas, NumPy, spaCy), Kotlin, React (Redux), JavaScript/TypeScript, Docker, Azure, AWS, PostgreSQL
Apr 2021 - Oct 2022
1 year 7 monthsStuttgart, Germany
IT Consultant
BCM Solutions GmbH
- IT consulting and full-stack development for 2 clients
- Co-developed a new sales platform with PHP and Vue.js, as well as maintenance and redesign of sales software (Polymer) for optimized user experience (Adco AG)
- Technical lead of an internal department for system integrations and interface architectures
- Integration of customer systems via API connections and middleware services (Cobrainer GmbH)
- Technologies: Python (Django, FastAPI, Flask), PHP, Vue.js (Vuex), Polymer, Node.js (Fastify), React (Redux), JavaScript/TypeScript, Docker, Kubernetes, Azure, AWS, PostgreSQL
Feb 2019 - Nov 2020
1 year 10 monthsPforzheim, Germany
Full Stack Developer
Sternad Software GmbH
- Independent development of a custom ERP system for 3 SME clients
- Support replacing legacy systems and advising on process digitization, data migration, and business process optimization
- Technical modernization of a legacy crisis management system, including upgrades to current PHP and database versions, API integration (Rhein-Neckar control center), and development of additional features
- Technologies: Python (Django, NumPy, Pandas), PHP (Zend1, Symfony), JavaScript, VueJS, Docker, Kubernetes, PostgreSQL
Jun 2017 - Jan 2019
1 year 8 monthsLeonberg, Germany
Full Stack Developer
heureka e-Business GmbH
- Development of the company website using modern web technologies
- Development of custom tools for time tracking and objective project evaluation
- Introduction of Docker for containerization and optimization of development processes
- Migration from SVN to Git and conducting Git workshops for colleagues
- Technologies: ColdFusion, React, JavaScript, Docker, PostgreSQL
Summary
Senior Software Developer with 7+ years of experience in scalable web applications and cloud architectures. Specialized in Python, PHP, React.js, and REST APIs with up-to-date expertise in GenAI/LLM integration.
Proven track record in enterprise system integrations, legacy modernization, and developing innovative AI-powered business solutions. Experience in project management, client consulting, and technical team leadership.
Languages
German
NativeEnglish
AdvancedEducation
Jan 2013 - Jan 2015
Pforzheim University of Applied Sciences
Business Informatics · Pforzheim, Germany
Jan 2007 - Jan 2009
Robert Bosch Vocational College
State-certified Technical Assistant · Stuttgart, Germany
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University of Applied Sciences entrance qualification
Certifications & licenses
IHK certified IT-Project Coordinator
IHK
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