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Onyedikachi Emmanuel

@onyedikachiemmanuel

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Full-stack engineer building fintech, edutech, and AI products end-to-end with multi-tenant, real-time performance.

Nigeria

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What I'm looking for

I’m looking to build end-to-end products where I can own both backend and frontend, ship multi-tenant real-time features, and integrate AI automation—collaborating with teams that value clean APIs, strong CI/CD, and measurable performance.

I’m a versatile Full-Stack Engineer with 2+ years of professional experience delivering end-to-end products across Fintech, Edutech, and AI. I’m equally strong on backend systems (NestJS, Node.js, Laravel, PostgreSQL) and frontend interfaces (React, Next.js, TypeScript), often owning both layers simultaneously.

Recently, I architected multi-role JWT authentication with NestJS, engineered PostgreSQL/Prisma schemas with type-safe migrations, and stabilized CI/CD pipelines—cutting build failures by 40%. I also built an OpenAI GPT-4o-mini powered IEP generation engine for automated educational goal creation, designed scalable multi-tenant MongoDB with strict data isolation, and delivered real-time behavioral tracking with automatic progress updates.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

KodeHauz

Feb 2026 - Present (4 months)

Architected multi-role JWT authentication in NestJS (including admin flows and environment-level secret verification) and engineered PostgreSQL/Prisma schemas with type-safe migrations. Stabilized GitHub Actions CI pipelines, cutting build failures by 40%, and standardized API documentation across endpoints using Swagger/OpenAPI.

NestJS JWT PostgreSQL Prisma OpenAPI GitHub Actions CI CD API Documentation

Current

Frontend Developer

Current

Cogrea

Apr 2023 - Present (3 years 2 months)

Built a React/TypeScript frontend for a secure payment gateway using Auth0 OAuth2 and integrated it with a Node.js/FastAPI backend. Managed GitLab CI/CD pipelines and AWS deployments, coordinating frontend releases with infrastructure teams.

React TypeScript Node fastAPI Auth0 Payment Integration Gitlab CI API Integration

Current

Frontend Developer

Current

Eduzone

Mar 2022 - Present (4 years 3 months)

Owned Next.js frontend features including student dashboards, wallets, and SEO, and improved Laravel backend routing for a high-traffic edutech platform. Resolved critical wallet transaction bugs to ensure 100% user balance accuracy and built a PHP/Laravel Wirechat messaging system with push notifications, boosting re-engagement by 25%.

Next.js React Typescript Laravel PHP Push Notifications Wallet Systems SEO

Lead Backend Developer

Trarrk

Jan 2024 - Jan 2026 (2 years)

Built an OpenAI GPT-4o-mini powered IEP generation engine to automate educational goal creation for teachers. Designed a scalable multi-tenant MongoDB system with strict data isolation and implemented real-time behavioral tracking plus automated PDF/CSV reporting using Puppeteer and Handlebars.

OpenAI API MongoDB Real Time Systems Puppeteer Handlebars CSV backend architecture AI Automation