Andrew Engineer

Middle backend engineer in a multi-product B2B SaaS, growing from frontend to backend and owning API and contract scope across fintech, EdTech, CRM, and real-time systems. Delivered greenfield-to-MVP backend work including core fintech APIs (transactions, swaps, transfers, KYC, audit logging) and performance improvements for critical CRM routes.

Independent microservices project for a trading journal and strategy platform, focusing on system design and service boundaries. Built a Go API gateway and NestJS microservices using gRPC/REST, JWT auth, separate PostgreSQL per service, and Docker Compose for local deployment.

Owned major backend scope for an EdTech platform including admin APIs and core business logic modules. Built homework versioning plus submission/review/check workflows and implemented push/in-app notifications and course/user/progress management APIs.

Owned backend modules and delivered REST/GraphQL APIs for B2B CRM dashboards and notifications. Improved critical routes by 3–4× using query tuning and Redis caching, with unit tests in Jest.

Designed and built real-time multiplayer backend features using event-driven architecture for thousands of concurrent users. Developed a car tuning/upgrade module and implemented chat, player events, matchmaking, and live communication APIs.

Delivered backend from 0 to MVP for a greenfield fintech platform, including architecture, database design, and core APIs. Owned transactions, swaps, internal transfers, live price updates, KYC flows, notifications, and audit logging with secure integrations.

Built web interfaces from designs using React/Next.js and TypeScript, integrated with APIs, and created a responsive component architecture. Transitioned to backend work on new products within the same company and team.

Earned a Master's Degree in Software Engineering (122) at National Transport University.