PROJECT: KOIOS MARKETPLACE
Koios Marketplace
- React
- Next.js
- TypeScript
- Node.js
- Microservices
- AWS
Koios Marketplace is a fast-moving startup platform where I own tickets end to end: plan with PMs, design flows, build React/Next.js UI, and wire to Node microservices. I also handle testing (Jest + E2E) and code reviews to keep quality high.
Challenges
- Coordinating rapid feature work between frontend and microservices without regressions.
- Keeping UI resilient to evolving service contracts.
- Maintaining release quality with tight timelines.
Learnings
- Ticket breakdown and sprint planning in a small team.
- Service-first UI integration patterns.
- Pragmatic testing balance between unit and E2E.
Outcomes & Key Results
- Shipped weekly iterations without major rollbacks.
- Reduced integration bugs by tightening contract checks.
- Improved developer speed with reusable UI patterns.