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

Byuser

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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Platform Development & Refactoring Initiative – Fullstack Developer

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I led modernization efforts on a critical manufacturing system by upgrading key technologies and automating workflows. This improved system reliability, sped up testing and deployment, and enabled faster delivery of features—helping the team respond more quickly to business needs.

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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