David – GCP, Kubernetes, Docker

A core Web API, continuously extended by hundreds of developers, needed a new foundation that could replace the old one without breaking existing work.

• Led the design of a new C# framework as the sole backend developer, alongside one frontend developer.
• Built and delivered the framework in four months.
• Ensured full backwards compatibility, enabling a rollout with no disruption.
• Achieved adoption by every development team.

A finance product serving 10 cost-sensitive customers was hitting its limits: as usage grew, users faced slow response times and out-of-memory crashes. A dedicated team was formed to build a faster, more scalable replacement.

• Played a crucial role in designing and implementing the replacement product.
• Reworked data processing to handle large data volumes efficiently, eliminating out-of-memory crashes.
• Introduced data indexing and migrated the data layer from SQL to MongoDB.
• Modernized the tech stack and contributed to UI improvements.
• Delivered a successful rollout with significantly better performance and scalability.

A real-time item tracking solution built on APIs hosted on Google Cloud (GCP). Because tracking data depended on external services, the design had to keep performance high even when those dependencies were slow.

• Led the architecture and implementation end to end.
• Designed and deployed hosted APIs on GCP for real-time item tracking.
• Addressed performance constraints from external integrations to keep tracking responsive.
• Rolled the solution out to the entire company.

A desktop application for secure file encryption and GDPR-compliant storage.

• Co-designed and developed a C# WPF desktop application for secure file encryption and GDPR-compliant storage.
• Collaborated with law firms to validate releases and ensure compliance.