Time tracking system – Lead Developer & Agile Master
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Time tracking system – Lead Developer & Agile Master

Byuser

In summer 2021, I stepped in as Lead Developer and Agile Master to guide four frontend summer employees enhancing an internal time-tracking system. The project was about turning an internal time-tracking tool into a revenue-generating SaaS product, covering Stripe payments, accounting integrations, and faster, low-cost deployments — enabling new paying customers and long-term scalability. By summer’s end, the product had new paying customers, faster deployments, and all interns had secured jobs — one joining the company full-time.

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Taxi Ordering App – Backend Developer

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I played a key role as a backend developer in a project resulting in launching a modern taxi booking, dispatch, and payment app. The backend services enabled real-time vehicle tracking, secure NETS mobile payments, and instant PDF receipts for riders. Built on a scalable AWS Fargate microservice architecture, the MVP launched on schedule, ran reliably, and quickly gained strong user adoption — driving more ride bookings and positive customer reviews in its first month.

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Vehicle Weighing System – Fullstack Developer

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The project was about enhancing and modernizing a truck scale system to improve operational efficiency and data accuracy. New features — including traffic-light control, extended weighing data, and updated receipt generation — streamlined operations for end users. Extensive refactoring reduced maintenance overhead, clarified data models, and increased test coverage, enabling faster, more reliable feature delivery.

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Custom Manufacturing Automation Projects – Fullstack Developer & Scrum Master

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A team of experienced full-stack developers carried out projects customizing manufacturing systems to meet specific customer requirements and integrate seamlessly with ERP platforms like SAP. The work delivered tailored order logic, tool-configuration features, and robust ERP integrations, while introducing agile practices that improved delivery coordination across the organization. The result was on-time deployment, smoother go-lives, and reusable test assets that reduced delivery times for future projects.

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Large-Scale Integration Project – Scrum Master / Architect / Fullstack Developer

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The project was about restarting and delivering a complex manufacturing system integration after an initial halt. As Scrum Master, architect, and developer, I led the team in connecting ERP/MES, production lines, robotics, and quality systems using an agile, test-driven approach. The result was an on-time delivery with most defects caught early, a flexible message-broker architecture that reduced change costs, and DevOps practices that improved transparency and speed — earning strong customer praise.

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Traffic Control Platform – Fullstack Developer

Byuser

As a fullstack developer, I helped unify multiple legacy traffic control systems into a single modern platform. By breaking down a WebLogic monolith into Spring Boot microservices and integrating Active Directory SSO and messaging with ActiveMQ, I improved system stability and scalability. I also enhanced the user experience with a refreshed WPF client and supported operators through testing and training. The result was a seamless transition with zero downtime, high code quality, and full adoption across traffic centers—earning strong praise from leadership