Integration of multiple data sources into the SAP-EHS system to ensure that safety-critical data in reports remains up to date. Development of a user interface for users & compliance team to monitor safety information.
Integration of multiple data sources into an automated laboratory system to generate machine instructions for chemical production and monitor manufacturing processes in the lab.
Provided essential legacy SAP-EHS system data for integration into modern IT systems. Improved efficiency and reduced risk by connecting safety critical SAP data to new platforms.
Developed software to accelerate innovation processes in laboratories. Utilized AI and statistical methods to create optimized experiment plans, increasing innovation speed and saving resources.
Developed a software solution for forecasting and monitoring land & property values for large-scale investors. Integrated geospatial data, statistical models and machine learning to support investment decisions.
Development of software to support consultants in location analysis for industrial companies. Integration of large volumes of geospatial data and company-specific location factors.
2017 - 2018: News-Room Software
Role: Project Manager, .NET Developer
Customer: SCISYS
Tasks:
Revival of a 1990s software product without internal developer knowledge. Led the project, built the team, and adapted the software and audio driver for Windows 10 to avoid contract penalties.
Skills:
C# (.NET 2, later 4), MS Access, WinSock, Win32, Steinberg ASIO, NUnit, later MSTest
Role: Quality Assurance & Test Automation Engineer
Customer: Radio & Media: Quality Assurance, Automation
Tasks:
Design & deployment of test management system on internal infrastructure,integrating with various project management and documentation systems for automated monitoring and process automation (via CI/CD).
Skills:
TestLink, PostgreSQL, Python, Ansible, Bash, Ubuntu LTS, Docker & Docker Compose, Kubernetes (K3s)
2025:
DeepSeek R1 for Structured [AI] Agents
Sam Witteveen
2024:
AWS API Gateway Workshop
Amazon
2023:
Software Architecture
Fraunhofer IESE
2022:
Relational Databases & ETL-Pipelines
RateEstate
2021:
Chief Innovation Management
Akademie der Ruhr-Universität GmbH
2019:
SCRUM Master (PSM) Prep
univatar Bildungsförderungsgesellschaft
? plus various additional training in software development, agile / scrum and project management.
2014:
Geo-Informatics & Hydrochemistry
Ruhr-Uni Bochum (Germany)
Highlights:
Full Stack Development:
Backend:
Frontend:
Security & Authentication:
Data Pipeline & ETL:
CI/CD:
BigData / Geodata:
Tools & Soft-Skills
Tools:
Project related skills:
Soft skills:
Work Experience
2020 - today:
Role: Senior Full Stack Developer
Customer: retab-group GmbH (Germany)
2023 - 2025:
Role: Senior Full Stack Developer
Customer: Henkel DXA (Contract via retab-group)
2022 - 2023:
Role: Senior Full Stack Developer
Customer: Henkel DX (Contract via retab-group)
2020 - 2022:
Role: Senior Full Stack Developer
Customer: RateEstate (Contract via retab-group)
2018 - 2020:
Role: Full Stack Developer
Customer: RBC (Essen, Germany)
2018 - 2019:
Role: Full Stack Developer
Customer: TerraSolutio (Contract via RBC)
2015 - 2019:
Role: QA & Automated Testing Engineer
Customer: SCISYS Plc (Dortmund, Germany)
Integration of multiple data sources into the SAP-EHS system to ensure that safety-critical data in reports remains up to date. Development of a user interface for users & compliance team to monitor safety information.
Integration of multiple data sources into an automated laboratory system to generate machine instructions for chemical production and monitor manufacturing processes in the lab.
Provided essential legacy SAP-EHS system data for integration into modern IT systems. Improved efficiency and reduced risk by connecting safety critical SAP data to new platforms.
Developed software to accelerate innovation processes in laboratories. Utilized AI and statistical methods to create optimized experiment plans, increasing innovation speed and saving resources.
Developed a software solution for forecasting and monitoring land & property values for large-scale investors. Integrated geospatial data, statistical models and machine learning to support investment decisions.
Development of software to support consultants in location analysis for industrial companies. Integration of large volumes of geospatial data and company-specific location factors.
2017 - 2018: News-Room Software
Role: Project Manager, .NET Developer
Customer: SCISYS
Tasks:
Revival of a 1990s software product without internal developer knowledge. Led the project, built the team, and adapted the software and audio driver for Windows 10 to avoid contract penalties.
Skills:
C# (.NET 2, later 4), MS Access, WinSock, Win32, Steinberg ASIO, NUnit, later MSTest
Role: Quality Assurance & Test Automation Engineer
Customer: Radio & Media: Quality Assurance, Automation
Tasks:
Design & deployment of test management system on internal infrastructure,integrating with various project management and documentation systems for automated monitoring and process automation (via CI/CD).
Skills:
TestLink, PostgreSQL, Python, Ansible, Bash, Ubuntu LTS, Docker & Docker Compose, Kubernetes (K3s)
2025:
DeepSeek R1 for Structured [AI] Agents
Sam Witteveen
2024:
AWS API Gateway Workshop
Amazon
2023:
Software Architecture
Fraunhofer IESE
2022:
Relational Databases & ETL-Pipelines
RateEstate
2021:
Chief Innovation Management
Akademie der Ruhr-Universität GmbH
2019:
SCRUM Master (PSM) Prep
univatar Bildungsförderungsgesellschaft
? plus various additional training in software development, agile / scrum and project management.
2014:
Geo-Informatics & Hydrochemistry
Ruhr-Uni Bochum (Germany)
Highlights:
Full Stack Development:
Backend:
Frontend:
Security & Authentication:
Data Pipeline & ETL:
CI/CD:
BigData / Geodata:
Tools & Soft-Skills
Tools:
Project related skills:
Soft skills:
Work Experience
2020 - today:
Role: Senior Full Stack Developer
Customer: retab-group GmbH (Germany)
2023 - 2025:
Role: Senior Full Stack Developer
Customer: Henkel DXA (Contract via retab-group)
2022 - 2023:
Role: Senior Full Stack Developer
Customer: Henkel DX (Contract via retab-group)
2020 - 2022:
Role: Senior Full Stack Developer
Customer: RateEstate (Contract via retab-group)
2018 - 2020:
Role: Full Stack Developer
Customer: RBC (Essen, Germany)
2018 - 2019:
Role: Full Stack Developer
Customer: TerraSolutio (Contract via RBC)
2015 - 2019:
Role: QA & Automated Testing Engineer
Customer: SCISYS Plc (Dortmund, Germany)