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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, and SaaS. Open to remote and US roles.

📍 Abuja, Nigeria REMOTE & US RELOCATION

View Work → Get in Touch ↓ Download CV

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 · Go · GPT-4 · Claude API · TensorFlow · PyTorch · LangChain · PostgreSQL · Docker · Kubernetes · AWS · GraphQL · Tailwind CSS · Vue.js 3 · Svelte · Playwright · Pinecone · Terraform · GSAP · Three.js ·

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 — 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

03 — Skills

Tools & technologies

Frontend

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

Backend & APIs

Node.jsPythonGoExpress.jsFastifyNestJSDjangoFlaskLaravelGraphQLtRPCRESTMicroservicesKysely

AI / ML

OpenAI GPT-4Anthropic ClaudeTensorFlowPyTorchHugging FaceLangChainNLPComputer VisionMLflowPandasPineconeWeaviateRAG

Cloud, Infra & Data

AWSDockerKubernetesTerraformCDKCloudFrontLambdaGitHub ActionsVercelPostgreSQLMongoDBRedisDynamoDBFirebaseSupabasePrismaJestPlaywright

04 — Work

Selected projects

🧠

▲ Currently Building

IBIAS — AI Business Intelligence Platform

No-code AI BI platform for non-technical teams. Natural language querying of complex datasets. Real-time dashboards processing 100K+ data points at sub-500ms. Predictive analytics, automated reporting, and intelligent KPI recommendations.

React 19Next.js 14TypeScriptGPT-4FirebaseSupabase

→ Request Early Access GitHub ↗

💰

▲ Currently Building

TAXwise

AI-driven tax & financial intelligence. Modular, role-aware dashboards for compliance, income tracking, and liability modelling.

ReactNext.jsTypeScriptFinancial APIs

→ Early Access

⚡

◈ New

NEXA Flow — AI Process Automation Engine

End-to-end intelligent process automation platform. Visual workflow builder with drag-and-drop LLM nodes, conditional branching, and real-time execution monitoring. Replaces 80%+ of manual back-office operations with composable AI agents and event-driven triggers across API, webhook, and database sources.

React 19TypeScriptLangChainNode.jsPostgreSQLRedisDocker

→ Request Demo GitHub ↗

📊

Real-Time AI Dashboards

10K+ DAU dashboards with sub-200ms response. Built for fintech and healthcare enterprise clients.

ReactNode.jsWebSocketsRedis

Enquire →

🔮

◈ New

Vector Labs — RAG Knowledge System

Production RAG pipeline for enterprise knowledge retrieval. Semantic search across internal docs, code, and data with sub-100ms query latency. Supports Pinecone + Weaviate vector stores.

PythonLangChainPineconeFastAPIReact

→ Enquire

🤖

ML Pipeline Suite

Production ML models across NLP, predictive analytics, and computer vision — meeting client accuracy and latency requirements in live environments.

PythonTensorFlowPyTorchAWS

Enquire →

🧩

Enterprise Component Library

Modular React system that compressed delivery timelines across multiple teams at VFXB.

React 19TypeScriptStorybook

GitHub ↗

⚗️

LLM Prompt Studio

Visual prompt engineering and LangChain workflow tool for AI developers. Chain prompts, test variables, and iterate on complex multi-step LLM pipelines in a collaborative interface.

ReactLangChainFastAPITypeScript

GitHub ↗

05 — 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

★★★★★

06 — Experience

Professional Experience

Jul 2025 – Present

VFXB

Remote · Nigeria

Current

Senior Engineer — Frontend, Backend & 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

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

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

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

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

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

07 — Contact