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Senior software engineer building and scaling software for real-world operations, with a focus on reliable backend systems and user-facing frontends. Lead roles spanning mobile development, admin tooling, and automation workflows using modern TypeScript/React stacks and Python/Django infrastructure.…

Marcel Huismann

Full Stack Developer, Back-End Developer

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Senior software engineer building and scaling software for real-world operations, with a focus on reliable backend systems and user-facing frontends. Lead roles spanning mobile development, admin tooling, and automation workflows using modern TypeScript/React stacks and Python/Django infrastructure.…

Available to hire

Senior software engineer building and scaling software for real-world operations, with a focus on reliable backend systems and user-facing frontends. Lead roles spanning mobile development, admin tooling, and automation workflows using modern TypeScript/React stacks and Python/Django infrastructure.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

German

Fluent

English

Advanced

Work Experience

Senior Software Engineer at Progressive Turf Equipment

April 1, 2024 - Present

Leading development of a mobile app to manage and automate agricultural machines across the US and Canada. Work includes real-time, millimeter-precision GPS handling and orchestration using TypeScript, React Native, and Expo. Also leads creation of an internal administrative frontend for monitoring mowing operations using TypeScript and React. Maintains and extends the Django backend and surrounding infrastructure including Firebase, AWS IoT, and Grafana dashboards. Improves agricultural machine navigation code and optimizes mowing patterns using Python.

Software Engineer at Freelancing

January 1, 2023 - March 31, 2024

Delivered diverse freelance software projects including web development, building internal applications and tools, code review, debugging, translation, and mentoring. Mentored junior developers and taught Linux, Python, machine learning, and full-stack development. Participated in bug bounty programs by identifying and reporting vulnerabilities in web applications to strengthen cybersecurity posture.

Bar, Switch EV Ltd at Switch EV Ltd

April 1, 2022 - December 31, 2022

Co-led MVP development for a scalable EV charging station management system. Responsibilities covered architecture, implementation in Python with FastAPI and Alembic, automated testing, and backend CI/CD with a focus on reliability and usability. Shipped features for remote charging station onboarding and management, and built standardized monitoring/diagnostics infrastructure. Collaborated with EV companies and charging station manufacturers during testing events to refine partnerships and product offerings.

Full-Stack at connedata GmbH

July 1, 2018 - March 31, 2022

Co-led development of five web applications serving 300,000+ users using TypeScript, Angular, and a backend stack centered around Python/Flask. Implemented and trained machine learning models using Python, Flask, NumPy, and scikit-learn. Standardized security practices and implemented internal security auditing for web services. Led standardization of development practices and company-wide design documentation. Provided client training and support to ensure adoption of applications.