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Oscar Okereke

@oscarokereke

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I build scalable web, fintech, and education platforms with full-stack engineering and technical leadership.

Nigeria

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What I'm looking for

I'm looking to build impactful, scalable products across web, fintech, AI, or education technology, while leading engineering initiatives and collaborating with cross-functional teams.

I've built products across education, fintech, telecommunications, and supply chain, from school CRM and bus-tracking systems to AI-powered job matching and escrow platforms.

At Thelix Holdings, I developed multi-tenant education products including CRM systems, a no-code website builder, and real-time school transportation tools. I also built quiz, assessment, and auto-apply features for Lightforth.ai.

As lead engineer at EULAV TRANSACT, I led architecture, development, and security for a fintech escrow platform serving 500+ users. I built NestJS microservices that reduced latency by 40% and introduced TensorFlow-powered fraud detection that reduced fraudulent transactions by 30%.

I've also delivered study-abroad scheduling tools at MYGEECS, VoIP and refund systems at Tizeti, and supply-chain marketplace features at Natquest. I work across JavaScript, TypeScript, Python, React, Next.js, NestJS, cloud infrastructure, and modern frontend and backend tooling.

Experience

Work history, roles, and key accomplishments

Senior Full-Stack Engineer

Thelix Holdings

Jun 2025 - Dec 2025 (6 months)

Developed CRM systems for schools and universities, built bus tracking solutions, and created a no-code website builder. Architected scalable backend services using NestJS, TypeORM, and GraphQL, and implemented modern frontend solutions with Next.js and related libraries.

NestJS TypeORM GraphQL Next.js Apollo Client Shadcn Ui Material UI Tanstack Query CRM Bus Tracking System No Code Platforms

Lead Engineer

EULAV TRANSACT

Nov 2024 - Jun 2025 (7 months)

Spearheaded engineering initiatives for a fintech escrow platform, designing microservices-based backend with Node.js, TypeScript, and NestJS. Led cross-functional teams to launch an MVP iOS app and integrated AWS and Railway for cloud and CI/CD.

NodeJS TypeScript NestJS React Native Expo AWS Railway CI CD Python TensorFlow Microservices DevSecOps

Full-Stack Software Developer

MYGEECS

Sep 2024 - Jan 2025 (4 months)

Contributed to developing a study abroad platform, engineering a full-stack Success Hub feature for booking expert-led preparation sessions. Built scalable backend with NestJS, PostgreSQL, and Prisma, and architected frontend with Next.js and ShadCN UI.

NestJS PostgreSQL Prisma Redis Next.js Shadcn Ui Tailwind Fullstack Development

Full-Stack Software Developer

Tizeti Network Limited

Aug 2023 - Nov 2024 (1 year 3 months)

Contributed to developing a VoIP application for Android, including push notifications and wallet integration. Developed a refund system using Node.js, Express.js, and MySQL, and contributed to the in-house management system Tizeti OS.

NodeJS ExpressJS MySQL React Redux React Query Material UI VoIP Android

Senior Frontend Engineer

Natquest

Aug 2023 - Jan 2024 (5 months)

Developed a supply chain website using Next.js, TypeScript, and ShadCN UI. Established the SCM Genius Network, implemented a negotiation feature, and integrated Stripe payment for seamless transactions.

Next.js TypeScript Shadcn Ui Stripe Supply Chain Negotiation