Backend Engineer · Nigeria

Henry Nnamani

Backend Engineer & AI Engineer

I build the invisible machinery that powers great products — resilient APIs, distributed systems, and infrastructure that scales without drama.

View My Work Get In Touch

henry@server:~

❯ cat profile.json

{

"name": "Henry Nnamani",

"role": "Backend Engineer",

"location": "Enugu, Nigeria 🇳🇬",

"stack": [

"Spring boot", "Node.js", "Python",

"PostgreSQL", "Redis", "NestJs"

"available": true

}

❯

Years Experience

Projects Shipped

95%

Uptime Target

What I Do

Engineering that
doesn't break.

I build systems designed for scale, reliability, and the inevitable 3am incident that never comes.

⚙️

Backend Development

High-performance server-side applications built with clean architecture, proper separation of concerns, and code that junior devs can actually maintain.

PythonNest.jsSpring BootORMGraphQL

🔌

API Design & Integration

Robust, versioned, and documented APIs that developers love to integrate. Built with security, rate limiting, and proper error handling from day one.

OpenAPIWebhooksOAuthJWT

🗄️

Database Architecture

Schema design, query optimization, and data modeling that keeps your app fast as you grow from 100 to 10 million records.

PostgreSQLMongoDBRedisMigrations

🐳

DevOps & Infrastructure

Containerized deployments, CI/CD pipelines, and cloud infrastructure that lets your team ship with confidence, every single time.

DockerGitHub ActionsAWSNginx

About Me

The engineer
behind the stack.

I'm Henry Nnamani, a backend engineer based in Enugu, Nigeria. I've spent years building the kind of systems that quietly power great products — the ones nobody notices until they go down.

My obsession is reliability. Clean APIs, efficient queries, infrastructure that doesn't keep you up at night. I care deeply about code quality, developer experience, and writing systems that the next engineer (or future me) can actually understand.

// currently Open to backend engineering roles & freelance projects.
Trading enthusiast building tools with the HN Trade Journal.

Location

Enugu, Nigeria 🇳🇬

Specialty

Backend & APIs

Education

Computer Science

Languages

English, French

Outside work

Trading, Reading, Sleeping

Status

● Available

Technical Skills

My toolkit.

Four years deep in the backend trenches. These are the tools I reach for first.

Backend Engineering

Nest.js / Express90%

Spring Boot / Spring Security / Spring Data JPA85%

Python / FastAPI68%

GraphQL75%

Databases & Storage

PostgreSQL88%

MongoDB82%

Redis / Caching80%

Query Optimization85%

MySQL78%

DevOps & Infrastructure

Docker / Containers85%

Linux / Shell88%

CI/CD Pipelines78%

AWS / Cloud72%

Nginx / Reverse Proxy80%

Languages & Tools

PythonJavaTypeScriptJenkinBashSQLGitPostmanVS CodeLinuxSwaggerJest

Soft Skills

Problem SolvingSystem DesignCode ReviewTeam CollaborationTechnical WritingMentoringAgileCommunication

Experience

Where I've
shipped things.

2024 – 2025

2025 – Present

Anbu Gynaecare

Backend Engineer

Visit site ↗

Contributed to an award-winning femtech startup building biodegradable menstrual pads — grant winner at the Enugu Tech Hackathon. Engineered the menstrual cycle prediction system using historical cycle data to deliver personalized health insights for users. Built the end-to-end product sales and order management feature, enabling customers to purchase biodegradable pads directly through the platform.

NestJs AWS PostgreSQL Next.js TypeORM

TradeLog

Lead Backend Engineer

Visit site ↗

Leading the backend engineering team at a trade journaling platform built for active traders. Architected and delivered core features including a trade overview engine with parallel computation for real-time PnL analytics, win rate tracking, streak detection, and drawdown analysis. Built the journal system, subscription management, and chart upload infrastructure. Designed scalable REST APIs with a focus on performance, maintainability, and clean architecture.

Spring Boot Spring Security Spring Data JPA PostgreSQL AWS Redis

Balgs Store

Fullstack Engineer

Visit site ↗

Built the full e-commerce platform for Balgs — a premium iPhone storefront serving customers across Nigeria. Engineered the Spring Boot backend handling product catalogue management, order processing, and a curated add-ons system that lets customers attach cases, AppleCare+, and accessories at checkout in a single flow. Developed the Next.js storefront with a clean, conversion-focused UI — hero sections, model lineup pages, and a smooth checkout experience with nationwide delivery support.

Spring Boot Spring Security Spring Data JPA PostgreSQL Next.js TypeScript AWS

Certifications

Proof of
the work.

Credentials earned along the way.

Telusko

Java Spring Framework, Spring Boot, Spring AI - Gen AI

Issued Jan 2026 Verify ↗

Stephan Grider

Rust: The Complete Developer\'s Guide

Issued Nov 2025 Verify ↗

Manik (Cloudaffle)

NestJs Masterclass - NodeJs Framework for Backend Development

Issued June 2025 Verify ↗

Cyfrin Updraft

Solidity 101: Learn Blockchain Development with Solidity and Ethereum

Issued March 2026 Verify ↗

Stephane Maarek

Apache Kafka Series - Learn Apache Kafka for Beginners v3

Issued Feb 2026 Verify ↗

Projects

Things I've
built.

A selection of projects that kept me debugging at ungodly hours — all worth it.

🕯️

↗

Confessional

An anonymous confession platform with six emotional categories — Confession, Regret, Obsession, Secret, Shame, Desire. No accounts. No names. Just honesty.

Next.js TypeScript Tailwind CSS

🏠

↗

LodgePay

A sanitation billing portal for a 44-room lodge. Tenants self-register by floor and room, pay their monthly levy via PIN, and admins track collection in real time.

HTML CSS Vanilla JS LocalStorage

🏠

↗

Lodgee

A verified campus housing marketplace for students in Nsukka and Enugu. Replaces WhatsApp chaos with filterable listings, transparent cost breakdowns, and direct agent contact.

Next.js TypeScript Convex Cloudinary

Henry Nnamani

Engineering thatdoesn't break.

Backend Development

API Design & Integration

Database Architecture

DevOps & Infrastructure

The engineerbehind the stack.

My toolkit.

Where I'veshipped things.

Proof ofthe work.

Things I'vebuilt.

Confessional

LodgePay

Lodgee

Got a project?Let's build it.

Engineering that
doesn't break.

The engineer
behind the stack.

Where I've
shipped things.

Proof of
the work.

Things I've
built.

Got a project?
Let's build it.