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Senior Engineer · AI Architect

Joshua
Onyekachukwu

Frontend Engineering / AI/ML Architecture / Full-Stack

I build AI-native systems and enterprise-grade interfaces, from distributed architecture to pixel-perfect delivery. 5+ years. 25+ products shipped. Clients across fintech, healthcare, SaaS, and e-commerce. Open to remote and US roles.

📍 Abuja, Nigeria REMOTE & US RELOCATION

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5^{+ yrs}

Professional Experience

25⁺

Products Shipped

Industries Served

Remote

Worldwide Available

React 19

TypeScript

GPT-4

AWS

LangChain

Next.js

Python

Docker

◈ React 19· ▣ Next.js 14· ◆ TypeScript· ▲ Node.js· ✦ Python· ◇ AI / ML· ◼ LangChain· ◆ RAG· ▣ AWS· ◇ Docker· ▲ PostgreSQL· ✦ WordPress· ◆ Elementor· ◼ Tailwind CSS· ▣ Vercel· ◆ Open Source·

Open to Opportunities

Remote Worldwide

01 - About

The engineer
behind the code

I am a Senior Frontend Engineer and AI/ML Systems Architect with 5+ years of experience building scalable web platforms, AI-native systems, and enterprise-grade applications. I currently work at VFXB across the full stack - frontend, backend, and AI integration - while building IBIAS and TAXwise, my own AI-native platforms. My foundation in Astronomy & Physics at the University of Nigeria, Nsukka shapes how I approach every system: with rigorous quantitative thinking and a focus on what actually works in production.

I have shipped 25+ production products across fintech, healthcare, SaaS, and e-commerce, with deep expertise in LLM integrations, RAG pipelines, and distributed system design. I work across the full stack, own outcomes end to end, and build with precision. I am actively seeking senior engineering roles - remote worldwide or on-site in the US - and am fully prepared for relocation and visa sponsorship.

🎯 For Recruiters

Senior IC to tech-lead range with a React, TypeScript, and AI stack. Open to FAANG-adjacent companies, Series B/C product startups, and ML-forward engineering teams. Available for full-time roles - remote worldwide or on-site in the United States.

Start a conversation →

250+

WordPress Sites Built

20+

Full-Stack Applications

95+

Lighthouse Score

3+ yrs

WordPress Specialism

02 - Experience

Professional Experience

Jul 2025 – Present

VFXB

Remote · Nigeria

Current

Senior Engineer - Frontend, Backend & AI

3 Stacks - FE · BE · AI

Contributing to the core engineering infrastructure at VFXB, working across frontend, backend, and AI systems as part of a cross-functional product team
Building and maintaining frontend interfaces using React 19, Next.js 14, and TypeScript, working closely with design to ship clean, accessible user experiences
Contributing to backend services and APIs, including working on data pipelines, server-side logic, and integration layers that support the product
Involved in the design and implementation of AI-powered features, including integrating language models and building tooling that brings intelligent functionality to end users
Participating in code reviews, technical discussions, and helping establish frontend standards and component patterns used across the team

▸ Working across the full product - from interface to infrastructure - on a team shipping real software used by real people

React 19Next.js 14TypeScriptNode.jsAI IntegrationCI/CD

Jan 2023 – Dec 2024

Cyberence

Remote · Global

Senior Full-Stack Engineer

20⁺ Apps shipped

Built and delivered over 20 full-stack web applications for clients across fintech, healthcare, and e-commerce, taking full ownership from initial brief through to deployment
Worked with React, Next.js, Node.js, Python, and Go depending on client requirements, adapting to different stacks and codebases across engagements
Built REST and GraphQL APIs with authentication, role-based access control, and third-party integrations baked in from the start
Maintained direct communication with clients in the UK, Canada, and Nigeria throughout each project, translating requirements into working software

▸ Delivered every engagement on time with no critical post-launch issues - built a reputation for reliability with distributed clients

ReactNext.jsNode.jsPythonGoGraphQLPostgreSQL

Feb 2022 – Present

Independent

Remote · Global

Ongoing

AI Integration Engineer

5⁺ AI tools shipped

Helping clients integrate AI into their existing products and workflows - connecting language models, building automation pipelines, and making AI practical and usable at the product level
Built NLP and predictive analytics tooling for clients who needed to make sense of their data without building a data science team from scratch
Worked with LangChain, OpenAI, and Anthropic APIs to build document processing, classification, and knowledge retrieval systems for business use cases
Set up vector search pipelines using Pinecone and Weaviate for clients who needed semantic search across large document sets

▸ The kind of work that bridges the gap between what AI can do and what a business actually needs - practical, focused, and shipped

PythonLangChainOpenAIPineconeTensorFlowFastAPI

2022 – Present

Independent

Remote · Global

WordPress Developer & Web Designer

250⁺ Sites built

Designed and built over 250 WordPress websites across three years for clients in professional services, e-commerce, hospitality, NGOs, and personal brands
Handled everything from initial concept and wireframing through to theme customisation, plugin configuration, performance tuning, and client handover
Built custom themes and page templates using Elementor, WooCommerce, ACF, and custom PHP where needed to meet specific client requirements
Managed SEO setup, Google Analytics integration, and basic content strategy for a number of clients as part of site delivery

▸ 250+ sites across 3 years - the volume taught discipline, client communication, and how to scope and deliver quickly without cutting corners

WordPressElementorWooCommercePHPACFSEO

Mar 2019 – Jan 2023

Self-Employed

Remote · Global

Frontend & Full-Stack Developer

2 Payment stacks

Started building websites and web apps for clients while still developing core skills, progressing from static HTML/CSS sites through to full React and Node.js applications
Built and shipped projects for clients in healthcare, retail, and media - serving as the sole developer on each, handling design, build, and deployment
First production integrations: Stripe and Paystack payment flows, email automation, contact forms, and third-party API connections
Set up hosting, domains, and basic CI/CD workflows - learning the full lifecycle of shipping software by doing it repeatedly for real clients

▸ The foundation years - where the discipline of shipping clean, working software for real clients was built

HTML/CSSJavaScriptReactNode.jsWordPressPaystack

2015 – 2019

UNN

Nsukka, Nigeria

B.Sc. Astronomy & Physics

4 Year B.Sc. degree

University of Nigeria, Nsukka - one of Nigeria's leading research universities
Degree grounded in quantitative reasoning, mathematical modelling, and systems analysis - disciplines that translate directly into how I approach software architecture and data-driven engineering

MathematicsPhysicsAstronomyResearch MethodsQuantitative Analysis

03 - Work

Selected projects

IBIAS AI BI Platform - dashboard of charts

📈

▲ Currently Building

IBIAS - AI Business Intelligence Platform

No-code AI BI platform empowering non-technical teams to interrogate complex data in plain English. Natural language → SQL → insight pipeline built for speed, with auto-generated executive briefings, anomaly detection, and predictive KPI forecasting designed to surface cost-saving opportunities early.

React 19Next.js 14TypeScriptGPT-4oSupabasePostgreSQL

→ Request Early Access

🏢

◈ Shipped · 2025

Adolysys - Corporate Site & CMS

Full corporate website for Adoly Integrated Systems Ltd, an Abuja IT consultancy. Discovery → wireframes → custom Elementor theme + content handoff. Delivered in 14 days; inbound enquiries up 3.2× month-over-month post-launch.

WordPressElementor ProCustom PHPSEO

Visit site ↗

NEXA Flow automation - server racks with workflow overlay

🔗

◈ Client work · Canada

NEXA Flow - AI Process Automation Engine

Enterprise workflow-automation build for a SaaS client in Canada: a visual workflow builder with drag-and-drop LLM nodes, conditional branching, and a durable execution queue. Delivered for the client; specific performance figures are under client discretion.

React 19TypeScriptLangChain.jsNode.jsPostgreSQLRedisDocker

→ Request Demo

🛍️

◈ Client work · E-commerce

Funmi's Store - Fashion & Lifestyle E‑commerce

E-commerce build for a fashion retailer: WooCommerce storefront with a custom child theme, dual Paystack/Flutterwave checkout, and post-purchase email flows. Live and taking orders; verified sales metrics to be added.

WooCommercePaystackElementorMailchimp

🧾

▲ Currently Building

TAXwise - AI Tax Intelligence

Role-aware tax and financial intelligence suite for Nigerian SMEs. Automates WHT, VAT, and PAYE computations with live FIRS rate updates. Pilot with 12 firms; quarterly compliance time down from 3 days to 45 minutes.

Next.js 14TypeScriptPrismaFIRS APIs

→ Early Access

Atomity Kubernetes cost explorer dashboard

☁️

◈ Live Demo · Frontend

Atomity - Kubernetes Cost Explorer

A scroll-triggered drill-down cloud cost explorer: stacked resource bars, 3-level navigation (clusters → namespaces → pods), and an auto-detected savings callout. Built for the Atomity frontend challenge.

Next.jsTypeScriptFramer MotionTailwind

Live demo ↗ GitHub ↗

PlaceTrack placement prediction dashboard

🎯

◈ Open Source · ML

PlaceTrack - AI Placement Predictor

A Streamlit dashboard that predicts student placement outcomes from a trained logistic-regression model - CGPA, internships, projects, aptitude, and soft skills feed an instant placed/not-placed verdict.

PythonStreamlitscikit-learnPandas

GitHub ↗

African NGO charity website - children and community

🌍

◈ Shipped · 2024

CIE-Africa - NGO Site & Donations

Story-led NGO website for a children's education charity. Custom donation flows via Paystack + automated donor receipts, with an impact-focused layout built to turn visitors into recurring supporters.

WordPressPaystackACFSEO

Real estate development - luxury property Lagos

🏘️

◈ Shipped · 2024

Lekki Homes - Real Estate Portal

Listing portal for a Lagos real estate firm. Advanced filters, virtual tour embeds, and agent CRM integration to turn site visits into qualified leads.

WordPressWooBookingsCustom PHPMaps

Abuja boutique hotel and restaurant website

🍽️

◈ Shipped · 2023

The Olive - Boutique Hotel & Restaurant

Abuja boutique hotel: brand site + room booking engine + online menu + WhatsApp table reservations - a booking flow designed to capture reservations the phone-only route used to miss.

WordPressHotel BookingWhatsApp APIFlutterwave

🏢

◈ Shipped · Elementor

Dyers Myers - Travel Agency Website

Travel agency site for Dyers Myers Empire - flight bookings, visa assistance, hotels, and guided tours across fast, mobile-first Elementor Pro pages. Live and maintained.

WordPressElementor ProCustom PHPSEO

Visit site ↗

Zelphora Styles fashion e-commerce store

🛍️

◈ Shipped · E-commerce

Zelphora Styles - Fashion E-commerce

Fashion store on WooCommerce + Elementor: product catalog, cart and checkout flows, and a brand look that matches the label. Live and taking orders.

WordPressWooCommerceElementorPayments

Visit site ↗

🔍

◈ Shipped · E-commerce

VokeFind - Fragrance E-commerce

Perfume store on WordPress + WooCommerce with Elementor: product catalog with add-to-cart, collection pages, and authentic-fragrance brand styling. Live in Ghana.

WordPressWooCommerceElementorPayments

Visit site ↗

Novacelle Enterprises sourcing corporate website

🏛️

◈ Shipped · Corporate

Novacelle Enterprises - Sourcing & Shopping

Corporate site for Novacelle Enterprises - personal shopping and product sourcing with structured service pages, a request-services flow, and a trusted, established look.

WordPressElementor ProCorporateSEO

Visit site ↗

📦

◈ Shipped · Elementor

FogaGood - Perfume Brand Website

Brand site for FogaGood Perfume (Accra): hero, about, product catalog, and shop flow on WordPress + Elementor Pro - built to sell a scent, not just describe it.

WordPressElementor ProCustom PHPSEO

Visit site ↗

💡

◈ Shipped · E-commerce

The Innovara - Family Clothing Store

Online store for Inno-Vara Solutions: men’s, women’s and kids’ collections with secure ordering and fast-delivery messaging on WordPress + Elementor Pro.

WordPressElementor ProCompany SiteSEO

Visit site ↗

✨

◈ Shipped · E-commerce

Valenzaar - Fragrance Retailer

Online presence for Valenzaar Scents Enterprises: curated fragrance collections, brand story, and a shop flow on WordPress + Elementor Pro.

WordPressElementor ProCustom PHPSEO

Visit site ↗

🌐

◈ Shipped · Corporate

Horizonyx - Travel & Tours

Travel & tours site for Horizonyx Enterprises - flight bookings, visa support and holiday packages presented with destination showcases on WordPress + Elementor Pro.

WordPressElementor ProCorporateSEO

Visit site ↗

LogLens - LLM observability dashboard with traces and token costs

🪵

▲ In Development

LogLens - Observability for LLM Apps

Open-source tracing and cost monitoring for AI features. Every prompt, token, and latency metric in one dashboard - catch a drifting model or a runaway bill before your users do. Built for teams shipping RAG and agentic workflows in production.

Next.jsTypeScriptOpenTelemetryClickHouseDocker

GitHub ↗

ContractGPT - contract review with clause-level risk flags

⚖️

◈ Shipped · Legal Tech

ContractGPT - AI Contract Review

Upload an NDA or sales contract and get a plain-English review in under 60 seconds: risky clauses flagged, obligations extracted, and a negotiable-terms checklist for your lawyer.

PythonGPT-4oLangChainFastAPIReact

NairaVault - personal finance app for Nigerian users

💰

▲ In Development

NairaVault - Nigerian Personal Finance

Budgeting built for how Nigerians actually bank: multiple wallets, airtime & data top-ups, live USD/NGN rates, and spending insights - with Paystack/Flutterwave connectivity and CSV bank-statement import.

Next.js 14TypeScriptPostgreSQLPaystackPWA

GitHub ↗

🩺

◈ Pilot · Healthcare

MediScan - AI Triage for Clinics

Symptom check-in that routes patients to the right queue before they see a nurse, so clinic staff spend their time on care instead of paperwork.

ReactPythonFastAPIPostgreSQL

Sana UI - open-source African design system components

🎨

◈ Open Source · Growing

Sana UI - Open-Source African Design System

Accessible React components with culture-aware patterns: multi-currency, bilingual LTR/RTL, and dark themes that actually pass WCAG.

React 19TypeScriptRadix UIStorybook

ShopSwift - headless commerce starter kit

🛒

◈ Open Source · Starter

ShopSwift - Headless Commerce Starter

Next.js storefront starter wired to headless WooCommerce - Paystack, Flutterwave, and GTBank gateways pre-integrated, deployable to Vercel in minutes.

Next.jsWooCommercePaystackTailwind

AfroBench - evaluation harness for African language models

🌍

◈ Research · Open Data

AfroBench - African LLM Benchmarks

A community eval harness for Pidgin, Yoruba, Igbo, and Hausa - culturally grounded questions, not translated English tests. Real scores, no hype.

PythonHugging FacePyTorchStreamlit

04 - Skills

Tools & technologies

◈ Core stack - daily drivers 6 primary tools

◈React 19UI Runtime

◆TypeScriptLanguage

▣Next.js 14Framework

▲Node.jsRuntime

✦PythonAI / Data

◼AWSCloud

▣

Frontend

Expert

TypeScriptReact 19Next.js 14Vue.js 3Angular 15+SvelteTailwind CSSShadCN/UIMaterial UIStyled ComponentsReduxFramer MotionThree.jsGSAP

⚙

Backend & APIs

Expert

Node.jsPythonGoExpress.jsFastifyNestJSDjangoFlaskLaravelGraphQLtRPCRESTMicroservicesKysely

◈

AI / ML

Advanced

OpenAI GPT-4Anthropic ClaudeTensorFlowPyTorchHugging FaceLangChainNLPComputer VisionMLflowPandasPineconeWeaviateRAG

◉

Cloud, Infra & Data

Advanced

AWSDockerKubernetesTerraformCDKCloudFrontLambdaGitHub ActionsVercelPostgreSQLMongoDBRedisDynamoDBFirebaseSupabasePrismaJestPlaywright

05 - Credentials

Industry certifications

Formally verified across cloud architecture, machine learning, containerisation, and modern frontend - every certification maps directly to something I've shipped in production.

🤖2023

Google Professional Machine Learning Engineer

Google Cloud

☁️2022

AWS Certified Solutions Architect – Associate

Amazon Web Services

⚛️2023

Meta React Advanced Developer Certificate

Meta / Coursera

🐳2023

Certified Kubernetes Application Developer (CKAD)

Cloud Native Computing Foundation

📦2022

Docker Certified Associate

Docker, Inc.

🏗️2024

HashiCorp Certified: Terraform Associate

HashiCorp

🌐2024

Google Cloud Professional Cloud Architect

Google Cloud

🧠2024

Microsoft Certified: Azure AI Engineer Associate

Microsoft

🍃2023

MongoDB Certified Developer Associate

MongoDB University

06 - Testimonials

What people say

Joshua is one of the most reliable engineers I have worked with. He took our vague product requirements and turned them into a clean, fast, fully working application. He asks the right questions, communicates clearly, and never disappears mid-project.

Adebayo Okonkwo

Founder · Fintech Startup · Lagos

★★★★★

Joshua designed and built our website at Adolysys and the result exceeded our expectations. He took time to understand our brand and what we do before touching anything, and the final site reflects that. It is clean, professional, and exactly what a company like ours needs to make the right first impression. Working with him was smooth from start to finish.

Achilike D. Onyekwele

CEO · Adoly Integrated Systems Ltd · adolysys.com

★★★★★

Joshua helped us integrate an AI document processing system into our existing workflow. He explained every decision clearly, built it in a way our team could actually maintain, and it works exactly as promised. He clearly knows his craft.

Michael Chen

CTO · SaaS Platform · Canada

★★★★★

I hired Joshua to build our e-commerce site from scratch. He handled everything - design, development, payment integration, and training our team to use it. Three years on, the site still runs perfectly. That says everything about the quality of the build.

Funmi Nwosu

Owner · Retail Business · Port Harcourt

★★★★★

Joshua is a senior engineer in the truest sense - he does not just write code, he thinks about the system. When we brought him in to review our frontend architecture, he identified issues we had been living with for months and fixed them within a week.

Tom Walker

Engineering Lead · Product Agency · UK

★★★★★

We needed someone who could move fast without making a mess. Joshua built our internal dashboard in a fraction of the time we expected, and the code was clean enough that our own team could pick it up immediately. Exactly the kind of engineer you want on a tight timeline.

Kemi Adeyemi

Head of Product · Healthcare Platform · Lagos

★★★★★

See all recommendations on LinkedIn

07 - Process