Mehmood U

Software Engineer (Full-Stack)

VetControl GmbH, Germany • Vollzeit

Jan 2024 - Present • 2 yrs 4 mos

• Full-stack development within a cross-functional team for a production billing and insurance platform. • Implemented PHP backend services handling REST and MQTT communication with external insurance partners. • Extended cron-based workflows for invoice processing and insurance submission monitoring. • Collaborated with frontend and QA to ensure stable releases and consistent user experience. User Management System (Sole Ownership) • Designed and implemented the complete user management system independently from architecture to production rollout. • Built Angular-based admin interfaces and PHP backend APIs for user lifecycle management. • Implemented role-based permissions, company-level filtering, and secure password reset flows. • Worked directly with the CEO to gather requirements, iterate on UX, and deliver production features. Swarm Intelligence / OCR Knowledge Improvement (Sole Ownership) • Independently developed OCR validation and correction logic to improve data recognition quality. • Created test cases and fallback mechanisms for unrecognized OCR outputs. • Improved system reliability and learning quality through iterative refinement.

Backend Software Engineer (Independent Ownership)

DFKI – Educational Technology Lab, Germany • Vollzeit

Jan 2022 - Jan 2024 • 2 yrs

• Near-solo responsibility for backend development, deployments, and maintenance of multiple research platforms. • Primary technical contact for researchers, stakeholders, and end users. Key Projects • Studyfinder: Developed and maintained CakePHP backend and MySQL/MariaDB databases; handled requirements, releases, and production updates independently. 1 • CTC Finder: Customized LimeSurvey with JavaScript decision flows and accessibility improvements. • KIPerWeb: Built PHP APIs integrating Python-based AI scripts with structured validation and error handling. • KI-WW: Collaborated with frontend developers on React andWordPress-based UI components using Storybook.

Chief Technology Officer (CTO) / Founding Full-Stack Engineer

Guel GmbH, Germany • Vollzeit

Nov 2019 - Jan 2022 • 2 yrs 2 mos

• Co-founded and built the complete technical platform from scratch for a healthcare recruitment startup. • Designed, implemented, and operated two production job portals: – hello-doctor.de – recruitment platform for doctors – hello-sister.de – recruitment platform for nurses and medical staff • Developed end-to-end full-stack architecture including Node.js (TypeScript) backend, React frontend, and MySQL databases. • Built a comprehensive admin panel to manage candidate profiles, interview processes, hospital clients, contracts, and billing workflows. • Led and mentored a team of 4 developers; defined architecture, coding standards, sprint planning, and code reviews. • Owned deployment, production stability, monitoring, and incident handling in Linux environments. • Integrated third-party services (Google APIs, GeoNames) and ensured secure, scalable system behavior. • Worked directly with the CEO on product vision, roadmap planning, and technical decision-making.