Marcel W.
Full Stack Developer
Experience
Jul 2023 - Present
2 years 6 monthsFull Stack Developer
Freelance
- Technologies: TypeScript, JavaScript, NodeJS, Rust, Nuxt, Hasura, OpenAI Embeddings, GCP, Vue.js, Python, Jupyter Notebooks, C#, LabVIEW, MATLAB, SQL
- Lead role with team of frontend developers, backend developers and data engineers in developing a price comparison site for auto parts
- Developed a machine learning application using a microphone-equipped glove for the automotive industry to analyze cable connection sounds and detect correct assembly
- Database integration with Hasura
- Implemented an LLM algorithm for text evaluation based on OpenAI Embeddings
- Developed data collection bots
- Kubernetes container orchestration
- Developed microservices with Docker
- Frontend development with Vue 3, Nuxt.js and Vue.js
- Bypassed Cloudflare
- Developed web scrapers with Puppeteer
- Created custom AI tools (e.g., AI audio transcription)
- Implemented custom-trained AI chatbots on client sites
- Backend development with Rust and Axum
- Developed machine learning algorithms with Python (NumPy, TensorFlow, Pandas)
Dec 2021 - Jun 2023
1 year 7 monthsEssen, Germany
Co-Founder and Backend Developer
KissCoders UG
- Technologies: TypeScript, JavaScript, Python, NodeJS, GraphQL, Docker, CSS, HTML, Kubernetes, Google Cloud, Vue.js, Cheerio, Jest, Postman
- Developed web scraping bots for a B2B e-commerce price comparison platform
- Reverse engineered and integrated over 40 external shops
- Developed integration tests for external APIs
- Normalized and checked integrity of external data
- Microservices development with Docker
- Developed an LLM algorithm for text evaluation based on OpenAI Embeddings
Oct 2018 - May 2021
2 years 8 monthsMadrid, Spain
Backend Developer and Data Engineer
TQS Integration Ltd.
- Technologies: NodeJS, C#, Python, SQL, OSIsoft PI System, AWS, ExpressJS, Docker, Kubernetes, Terraform, GCP, Grafana, Postman, Puppeteer, Pandas, GitHub, Jest, Cheerio
- Developed and maintained data networks for production facilities of large pharmaceutical companies
- Designed data pipelines
- Implemented data pipelines including backup servers
- Integrated intranet data sinks with web applications
- Developed tools for data visualization and storage
- Aggregated data from various production line elements through multiple interfaces
Feb 2018 - Oct 2018
9 monthsStuttgart, Germany
Embedded Systems Engineer
Robert Bosch GmbH
- Technologies: LabVIEW, C#, RS232
- Developed electrical and pneumatic test benches with control and evaluation software
- Created automated test cycles to improve measurement accuracy and speed
- Supervised students during test cycles
- Analyzed and evaluated test results
- Adapted process control software based on results
- Implemented evaluation algorithms with variable smoothing
- Supported other Bosch plants in software and test cycle development for electrical test benches
- Conducted customer measurements with developed prototypes
Summary
I am an experienced software engineer with work experience in many different types of software.
I started out as a research and development engineer. From my first role as a research and development engineer, where I programmed software for process control and analysis, I moved into data engineering in pharmaceutical production facilities.
Now I've been working in web development for 7 years mainly as a backend engineer and love constantly learning and solving tough problems.
Languages
German
NativeEnglish
AdvancedSpanish
AdvancedFrench
IntermediateEducation
Oct 2016 - Mar 2018
Ruhr-Universität Bochum
Master of Science, Control Engineering and Engineering Informatics · Mechanical Engineering · Germany
Oct 2011 - Mar 2015
Ruhr-Universität Bochum
Bachelor of Science · Mechanical Engineering · Germany
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