Senior Backend Engineer · Abuja, Nigeria

Olayinka
Olawale

I build scalable backend systems, real-time APIs, and cloud infrastructure. 5+ years across blockchain, fintech, and healthcare — with a focus on performance, security, and shipping things that last.

5+
Years Exp.
70%
Latency Cut
100%
Fund Safety
45%
Load Reduction
Selected Work

Things I've
Shipped

01 — Featured · E-Mobility · Transport
FuseMetro

An electric vehicle ride-sharing platform built for affordable, sustainable urban transport in Nigeria. Engineered the backend for real-time GPS tracking, ride booking, and driver scheduling — including WebSocket-driven location updates and QR-based session management for e-vehicle boarding.

Node.js WebSockets NestJS PostgreSQL Real-time E-Vehicle
fusemetro.com.ng ↗
E-vehicle ride-sharing platform. Sustainable urban transport for Nigeria.
fusemetro.com.ng
Technical Stack

What I
Work With

Backend
Node.js TypeScript NestJS Express gRPC REST WebSockets
Databases
PostgreSQL MongoDB Redis Prisma BullMQ
Cloud & DevOps
GCP AWS Kubernetes Docker GitHub Actions Nginx
Web3 & Blockchain
Solidity Web3.js Ethers.js ERC-20/721 Hardhat Anchor
Security
Smart Contract Audit OWASP HIPAA M.Sc. Cybersecurity
Languages
TypeScript JavaScript Solidity Rust Python SQL
Career

Where I've
Been

Oct 2025
— Present
Senior Backend Engineer & Tech Lead
Munchory · Abuja, Nigeria
  • Architected multi-tenant NestJS backend for food delivery with real-time GPS tracking
  • Built subscription scheduling service for recurring weekly meal plans with BullMQ
  • Implemented RBAC system with secure vendor dashboards for chef compliance management
Dec 2025
— Feb 2026
Backend & Cloud Engineer
SalesGroup · Remote
  • Led monolith-to-microservices migration on GCP with Docker & Kubernetes
  • Designed inter-service API gateway patterns improving fault tolerance significantly
  • Optimised cloud resource allocation reducing infrastructure costs at scale
Sep 2023
— Apr 2026
Blockchain Backend Engineer
Buildorz · Remote
  • Reduced transaction processing latency by 70% via code optimisation and database indexing
  • Conducted Solidity smart contract audits — 100% fund safety record across all deployments
  • Mentored engineers, increasing team velocity by 25%
Jan 2024
— Mar 2025
Backend Engineer
MyCareAssistant · Remote
  • Owned HIPAA-aligned Node.js & PostgreSQL backend for a healthcare platform
  • Redis caching strategies reduced API load times by 45%
  • Enforced authentication, authorisation, and encryption for sensitive health data
Let's Talk
olinkstech@gmail.com