I’m a Backend Engineer passionate about building scalable backend systems, APIs, and AI-driven platforms that solve real-world problems.
I’ve contributed to building products like Verimed AI, JobgapAI, and Komas500, designing and deploying backend systems with NestJS, Express.js, TypeScript, AWS, and PostgreSQL. I enjoy optimizing performance, improving developer experience, and implementing reliable backend architectures.
My background in Electrical and Electronics Engineering gives me a solid foundation in systems thinking, while my professional experience bridges software scalability, data architecture, and intelligent automation.
Languages: TypeScript, JavaScript, Python, C++
Frameworks & Libraries: Node.js, NestJS, Express.js, Socket.io, BullMQ
Databases: PostgreSQL, MongoDB, Redis, MySQL, Prisma ORM, TypeORM, Mongoose
Cloud & Infrastructure: AWS (S3, RDS, ECS, SQS, SES, SNS, CloudWatch), GCP (Identity, Functions), Firebase (Auth, Firestore), Docker, Render
Security & Auth: JWT (HS256/RS256), RBAC, MFA (TOTP), Passport.js, bcrypt, Helmet.js
Dev Tools: Git, GitHub Actions, Postman, Swagger/OpenAPI, ESLint, Prettier, Zod
Monitoring & Observability: Prometheus, Grafana, Pino, Winston, OpenTelemetry
- 🧠 Verimed AI — Multi-tenant pharmaceutical compliance platform using NestJS, Prisma, AWS, and Web3 verification.
- 💼 JobgapAI — AI-powered career automation backend integrating OpenAI, Stripe, and MongoDB.
- 🛒 Komas500 — Multi-vendor e-commerce platform backend with wallet system, order tracking, and Paystack integration.
- 💳 PayFlex (Open Source) — Fintech authentication system with OAuth2, Twilio, and secure MFA flows.
- 💬 HappyHub AI (Open Source) — Mental health social API with JWT authentication and community features.
- Serverless architectures with AWS Lambda & Cloud Run
- Distributed event-driven systems
- AI workflow automation with LangChain and OpenAI APIs
- Improving observability using OpenTelemetry
I enjoy collaborating on open-source projects, building scalable backend systems, and mentoring aspiring engineers.
📧 Email: rufairahimmoyosore@gmail.com
💼 LinkedIn: linkedin.com/in/abdulrahim-rufai-b0747a245
🐙 GitHub: github.com/macmizy
📰 Blog: rahimmoyo.hashnode.dev