Vincent Munyanya

I’m a results-driven Full Stack Software Engineer with 4+ years of experience building scalable web applications, cloud-native backend systems, and high-performance APIs across fintech, SaaS, and enterprise platforms. I’m known for designing and delivering end-to-end product features while optimizing system performance.

At OneTravel, I designed and developed scalable REST and GraphQL APIs using Node.js, TypeScript, and NestJS for a fintech payment infrastructure platform. I led merchant onboarding and transaction reconciliation serving over 25,000 active merchants, implemented Stripe and Flutterwave integrations, and reduced API response times by approximately 45% through PostgreSQL query optimization and indexing. I also introduced Redis caching, migrated services into Dockerized microservices on Kubernetes, improved CI/CD (GitHubActions) from 25 minutes to 8 minutes, and maintained 99.9% uptime while processing ~1.5 million requests daily.

Previously at Nova Digital Solutions, I built responsive frontend dashboards with React, Next.js, Redux, and Tailwind CSS, and developed backend APIs with Node.js, Express.js, and MongoDB for logistics and inventory management SaaS. I improved frontend load times by approximately 40% using code splitting and lazy loading, added role-based access systems for enterprise customers, and strengthened reliability with Jest and Supertest testing. I also supported containerized deployments on Docker, Nginx, and AWS EC2 and helped resolve memory leaks and inefficient database queries.

I’m passionate about scalable architecture, DevOps culture, performance optimization, and building reliable customer-focused products. I enjoy collaborating cross-functionally in Agile teams, mentoring junior developers, and owning production incident management, monitoring, and hotfix deployments.