David Oyelade - Full-Stack AI Engineer

Full-stackAI agentsVoiceQA automation

I build AI products end to end.

By David Oyelade / Lagos, Nigeria / Issue 01, 2026

Six years of shipping web products in TypeScript, React, Next.js and Node.js. Lately it is AI agents and voice, with Claude Code, Cursor and Codex in the loop and automated tests checking their work. Open to remote roles, and to relocation where the employer sponsors a visa.

David Oyelade standing on a cobbled street, photographed from above, looking up at the camera — Fig. 1 David Oyelade, Lagos

Featured

Chrome extension

75% faster job applications

Voice AI

Interview agent under 500ms

Billing

Credit ledger stopped 20%+ LLM overspend

TypeScriptReactNext.jsNode.jsAI agentsVoice AIPlaywrightCypressPostgreSQLSupabase

Ask about David

Got a question?
Tap one.

Pre-written answers from his resume, so every one is accurate and instant. No live AI is guessing.

Ask about David Pre-written answers

What would you like to know?

Pick a question, or type your own below.

Selected work

View all

Screenshot of the Nucrox homepage: 'Land Interviews Faster'

AI platformOct 2024 to Mar 2026

An AI job search platform, built end to end.

I was the founding engineer and a shareholder at Nucrox. Next.js 15 and TypeScript on the front, Supabase and Stripe underneath, with a Chrome extension agent and a real-time voice interview simulator attached. Server rendering and edge caching took the main dashboard to 98/100 on Lighthouse.

Words and code by David OyeladeVisit Nucrox

340 → 192 KB entry chunk, gzipped

Open sourceSep to Oct 2026

The review that cut the entry chunk by 44%.

I went through the PC Anatomy site and repo and found three.js shipping in the main bundle. The maintainer merged the fix (PR #29), and the entry chunk dropped from 340 KB to 192 KB gzipped.

Read the discussion

Screenshot of the DevFlow homepage: 'Describe it. Watch it run.'

AI workflows2024 to present

Plain English in, executable TypeScript out.

DevFlow turns an instruction into a node-based workflow graph. Groq inference makes the generation fast, run state lives in Neon, and one click exports the graph as TypeScript.

Live demo Source

75% less time to complete a job application

Browser automationChrome Web Store

An agent that fills in your job applications.

It reads the page inside your own logged-in LinkedIn or Indeed session and fills the form for you. Manifest V3, cross-origin DOM automation, published on the Chrome Web Store.

See the listing

Six years of shipping the web.

Four roles, newest first. Pick a strip to open it.

Oct 2024 to Mar 2026 / Remote

Nucrox (formerly NextJobQuest)

Founding Engineer and Shareholder

Built and published a Chrome extension that fills in job applications inside authenticated LinkedIn and Indeed sessions, cutting completion time by 75%.
Built a credit ledger in Supabase with Stripe billing to meter LLM usage, stopping 20%+ in API overspend.
Built a real-time interview simulator on Vapi and Groq with audio latency under 500ms.
Tuned server rendering and edge caching to reach 98/100 Lighthouse on the main dashboard.

Next.js 15 / TypeScript / Supabase / Stripe / Vapi / Groq

Jan 2024 to present / Remote

Independent contract work

Contract Developer and QA Engineer

OIG Real Estate (Jan to Jun 2024): built an agent KYC verification system that removed fake listings, onboarded 200+ verified agents and produced 500+ qualified leads in Q1.
QA engineering (2026 to present): automated and end-to-end testing with Playwright and Cypress, DOM flow validation, Jira.

Next.js / Node.js / Playwright / Cypress / Jira

Apr 2021 to Dec 2023 / Remote (Seattle, WA)

RazorLabs

Frontend Developer

Built JOE, a browser-based 3D voice assistant with Three.js and the Web Speech API, running at 60fps on mobile with 20+ voice commands.
Built a custom NFC-to-Shopify checkout flow that lifted mobile purchase conversions by 25%.
Maintained GitHub Actions CI/CD pipelines and onboarded four engineering hires.

Three.js / Web Speech API / Shopify / GitHub Actions

Feb 2020 to Mar 2021 / Remote (Richmond, VA)

Burritt Research

Web Developer

Maintained React dashboards serving 30,000 monthly active users.
Built the web client for an augmented-reality product demo that sales teams used to close enterprise accounts over $100K.
Integrated Dialogflow chatbots, reducing support tickets by 60%.

React / Dialogflow / AR

Letters to the editor / feedback from three clients

NextJobQuestPlatform build

David took our concept from Figma to a production-ready platform. He built the résumé parser and the application flow, and the product has stayed fast and dependable for our users.

Figma to production
Résumé parser
Application flow

Project: NextJobQuest

DEDaniel EdemaCEO, NextJobQuest

RitaMarie DesignsShopify theme

The Shopify theme David built made our store faster and easier to shop. Customers rave about the speed, and our team loves the clean, maintainable code.

Custom Shopify theme
Clean, maintainable code

Project: RitaMarie Designs, Shopify store (site now offline)

OAOlanrewaju AwotonaFounder, RitaMarie Designs

Jzeem ConsultingGatsby migration

Migrating to Gatsby under David's guidance made our site much faster. He handled everything, GraphQL, Netlify CMS and deployment, flawlessly.

Gatsby migration
GraphQL
Netlify CMS
Deployment

Project: Jzeem Consulting, Gatsby migration (site now offline)

JAJumoke AgbajeFounding Partner, Jzeem Consulting

From the archive

Client work from the freelance years.

OIG Real Estate website: discover your dream home, property search

OIG Real EstateProperty marketplace with agent KYC, Next.js

OpenProp Africa website: Renting made easy for everyone

OpenProp AfricaProperty platform for Ghana, contributor

Ekelipse Lounge website: Afro Fusion Restaurant and Shisha Lounge

Ekelipse LoungeTable reservations, Next.js

GetDwellerWebflow CMS

Site offline RitaMarie DesignsE-commerce, Shopify

Site offline Tomok TechStatic site, Astro

Site offline Jzeem ConsultingStatic site, Gatsby

About the byline

A full-stack engineer in Lagos, six years in.

David Oyelade, Lagos

I'm a full-stack engineer based in Lagos (UTC+1). I build web products, and lately that means AI agents and voice.

My main project is Nucrox, an AI job search platform I built end to end as founding engineer. It includes a Chrome extension that fills in job applications inside LinkedIn and Indeed sessions and cut completion time by 75%, a credit ledger on Supabase and Stripe that stopped more than 20% in LLM overspend, and a voice interview simulator that responds in under 500ms.

I use Claude Code, Cursor and Codex daily and check what they write with automated tests. I also do QA engineering with Playwright and Cypress. I read the code and fix what I find.

I'm open to remote roles, full-time or contract, and to relocation where the employer sponsors a visa.

Say hello.

Open to remote roles and to relocation with visa sponsorship. Send your email address and I will write back.

Availability

Open to remote work, and to relocation with visa sponsorship.

Full-time or contract
Based in Lagos, UTC+1
Remote worldwide, or on-site where sponsored

oyeladedavid1
@gmail.com Download resume (PDF) WhatsApp

YELADE