FULL-STACK SOFTWARE ENGINEER

NIGERIA — DIGITAL PRODUCT BUILDER

Okonkwo Uchechukwu Henry — Full-Stack Software EngineerHENRYOKONKWO

I build digital systems,
products & experiences.

From interfaces to APIs, databases, realtime systems, and AI integrations — I build software that works beyond the screen.

SELECTED WORK
RESUME
SCROLL
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ABOUT ME

I build software from theinterface all the way to theinfrastructure behind it.

I'mafull-stacksoftwareengineerfocusedonbuildingpracticaldigitalproducts,backendsystems,realtimeapplications,andAI-poweredexperiences.Ienjoytakinganidea,understandingtheunderlyingproblem,designingthesystembehindit,andturningitintoworkingsoftware.

Myworkspansfrontendengineering,backendarchitecture,databases,APIs,realtimecommunication,deployment,andAIintegration.

DISCIPLINE
FULL-STACK ENGINEERING
ALSO
SYSTEMS / REALTIME / AI
BASED IN
NIGERIA
STATUS
AVAILABLE FOR SELECTED PROJECTS

How I build

A repeatable engineering process, not a set of trends.

  • 01

    UNDERSTAND

    Understand the product, users, requirements, and actual problem before writing unnecessary code.

  • 02

    ARCHITECT

    Design the frontend, backend, database, APIs, services, and infrastructure as one connected system.

  • 03

    BUILD

    Turn the architecture into maintainable, functional software with strong attention to user experience.

  • 04

    EVOLVE

    Improve reliability, performance, scalability, security, and maintainability as the product grows.

Capabilities

Engineering services across the full product lifecycle.

01

FULL-STACK DEVELOPMENT

Building complete web applications from frontend interfaces to backend APIs, databases, authentication, business logic, and deployment.

02

BACKEND ENGINEERING

Designing reliable APIs, backend services, authentication systems, database architectures, background jobs, and scalable application logic.

03

DIGITAL PRODUCT DEVELOPMENT

Turning product ideas and business requirements into functional, production-ready software systems.

04

REALTIME APPLICATIONS

Building applications involving realtime communication, WebSockets, Socket.io, market data, notifications, and live system updates.

05

AI INTEGRATION

Integrating modern AI models and APIs into practical software products, SaaS platforms, automation systems, and intelligent workflows.

06

SYSTEM ARCHITECTURE

Designing the relationship between frontend applications, APIs, databases, queues, workers, external services, and infrastructure.

PORTFOLIO ARCHITECTURE

Selected work

Real products, real systems — engineered end to end. Hover any project to preview the live site.

01 / 04FINTECH / TRADING PLATFORM

MAXIMUSTRUST

A high-performance financial technology platform engineered for real-time market data streaming, user ledger management, multi-asset trading algorithms, and secure transactional APIs.

  • — Real-time WebSocket price feed streams with zero dropped ticks
  • — Robust user ledger accounting & multi-currency wallet engine
  • — Secure OAuth2 & JWT session management with refresh token rotation
  • — Automated order matching engine and historical analytics dashboards
  • — High-concurrency RESTful APIs backed by Redis cache layers

React / Next.js / TypeScript / Node.js / WebSockets / Express / PostgreSQL / Redis

EXPLORE SYSTEM
MAXIMUSTRUST previewLIVE
02 / 04LAUNDRY MANAGEMENT / BUSINESS ERP

GERILI

A comprehensive SaaS management platform designed to automate commercial laundry operations, order lifecycles, route logistics, and customer communications.

  • — End-to-end order lifecycle tracking from intake to dispatch
  • — Customer ledger, automated billing, and receipt generation
  • — Role-Based Access Control (RBAC) for managers, staff, and drivers
  • — Real-time operational metrics & revenue analytics charts
  • — Customer SMS alerts and order status lookup portal

React / TypeScript / Node.js / Express / MongoDB / Tailwind CSS / REST APIs

EXPLORE SYSTEM
GERILI previewLIVE
03 / 04AGRITECH / FARM-TO-TABLE COMMERCE

RHINOFoods

A direct farm-to-table e-commerce platform connecting local farmers with consumers, featuring live flash sales, 24-hour delivery windows, and inventory-aware product listings.

  • — Live flash sale engine with per-product countdown timers
  • — Real-time stock depletion & 'sold out' state management
  • — Farmer profile & featured-farmer merchandising system
  • — Trending & curated 'Freshness' product collection grids
  • — Trust metrics dashboard: 85,000+ orders delivered, 98% satisfaction

Express / Vite / React / TypeScript / Node.js / REST APIs / Tailwind CSS

EXPLORE SYSTEM
RHINOFoods previewLIVE
04 / 04EDUCATION / TALENT / DIGITAL PLATFORM

NORTHGARD NEXUS

A scalable multi-portal educational & talent ecosystem connecting video-based trading courses, technical skill academies, and a verified developer talent marketplace.

  • — Unified Single Sign-On (SSO) identity across multiple service sub-portals
  • — HD Video streaming course portal with progress tracking & quizzes
  • — Interactive candidate profile builder & recruiter directory
  • — Payment gateway integrations for course enrollments and subscriptions
  • — Dynamic dashboard for instructors and platform administrators

React / Next.js / TypeScript / Node.js / PostgreSQL / Tailwind CSS

EXPLORE SYSTEM
NORTHGARD NEXUS previewLIVE

My stack

Qualitative levels — not invented percentages.

  • TypeScriptCORE
  • JavaScriptCORE
  • ReactCORE
  • Next.jsCORE
  • ViteSTRONG
  • Tailwind CSSSTRONG
CORE
Technologies used regularly and central to my development workflow.
STRONG
Technologies I'm highly comfortable working with across real projects.
WORKING KNOWLEDGE
Technologies I have practical experience with and continue to deepen.

Experience

Responsibility for building real software systems.

  1. 01

    LEAD FULL-STACK ENGINEER

    MAXIMUSTRUST LTD

    • — Full-stack application development
    • — Backend systems
    • — APIs
    • — Realtime functionality
    • — Financial technology products
    • — System integration

  2. 02

    LEAD WEB DEVELOPER

    FRANKPOWER TECH LTD

    • — Web application development
    • — Frontend engineering
    • — Backend integration
    • — Product implementation
    • — Responsive web experiences

AI ENGINEERING DIRECTION

Building
with AI

I'm expanding from traditional full-stack engineering into AI engineering — integrating intelligent models, vector retrieval, and autonomous agents into real software products rather than treating AI as a standalone experiment.

  • LLM INTEGRATION
  • AI APIS & SDKS
  • RAG ARCHITECTURE
  • AI WORKFLOW AGENTS
  • PRODUCT INTELLIGENCE
  • AI-POWERED SAAS

SOFTWARE ENGINEER BUILDING INTELLIGENT SYSTEMS

LLM API Layer

OpenAI, Anthropic & DeepSeek integration with streaming completions and custom function calls.

CLICK NODES TO EXPLORE AI CAPABILITIES

NEURAL TOPOLOGY / AI GRAPH

More than code

I DON'T JUST BUILD FEATURES.

I BUILD SYSTEMS.

I DON'T JUST WRITE APIs.

I DESIGN HOW PRODUCTS WORK.

I DON'T JUST INTEGRATE AI.

I TURN AI INTO PRODUCT EXPERIENCES.

DIRECT CONTACT

Let's build
something.

Have an idea, product, backend architecture, or AI solution that needs to become high-performance software? Let's turn your requirements into real code.

VIEW MY WORK