Product / full-stack engineering
Architecture and end-to-end delivery from idea to production.
Senior FrontendEngineer
I’m Khalid Oyeneye. I build production SaaS products across web and mobile, from frontend architecture and interfaces to APIs, data, testing, and delivery.
01 · About
SaaS products, built end to end.
I build SaaS products end to end across web and mobile.
My scope adapts to the product and team, whether that means fullstack delivery or focused ownership of frontend, mobile, backend, or another delivery area.
Read the résuméFrontend and mobile
Accessible interfaces, maintainable state, and responsive product experiences.
Backend and data
APIs, data models, authentication, realtime workflows, and integrations.
Quality and delivery
Testing, performance, CI/CD, review, and cross-functional execution.
02 · Stack
Production tools and practices.
Technologies used across interfaces, data, services, and testing.
Frontend & Mobile
- React
- React Native
- TypeScript
- JavaScript
- Vite
- Next.js
- Tailwind CSS
- Expo
Backend & APIs
- Node.js
- Express
- REST APIs
- Firebase
- Socket.IO
- Zod
Data & State
- MongoDB
- Redux Toolkit
- TanStack Query
- Zustand
- URL state
Testing & Delivery
- Vitest
- Playwright
- Accessibility
- Performance
- Git
- CI/CD
03 · Experience
Experience across borders.
Roles and outcomes from my current résumé.
01
1840 & Company
Kansas, United States · Remote
Senior Frontend EngineerJun 2024 to Present
Lead frontend architecture and delivery across recruitment, marketplace, and financial products.
- Breaks down work, reviews pull requests, and supports frontend engineers and interns.
- Contributed to 1840 Global Talent Cloud, Link-able and its AI LinkFinder search experience, and First Market.
React · TypeScript · Tailwind CSS · Redux Toolkit · TanStack Query · Zustand
02
Atop Web Technologies
Stockholm, Sweden · Remote
Frontend EngineerApr 2023 to Jan 2024
Led Scorebox frontend architecture and built its reusable component system.
- Established reusable interface foundations for a pre-launch product.
- Delivered frontend performance, reliability, and product-quality improvements.
React · TypeScript · Component architecture · Performance
03
Iroko Events International
Budapest, Hungary · Remote
Fullstack Web DeveloperFeb 2022 to Jan 2023
Built the React and Firebase voting product, administration workflows, and supporting services.
- Built a responsive React and Firebase voting experience that made participation easier across devices.
- Built administration workflows that reduced manual vote-management work and significantly lowered operational errors.
React · Firebase · Responsive UI · Email workflows
04
Agrofeed Integrated Services
Lagos, Nigeria
Fullstack Web DeveloperNov 2019 to Jan 2022
Built and maintained the company web platform, using Firebase for server-side functionality.
- Built and launched the company website to support product discovery and sales.
- Implemented technical SEO improvements that increased the company's organic search visibility.
HTML · CSS · JavaScript · Firebase · SEO · Responsive design
04 · Selected work
Selected product work.
Published case studies across SaaS, education, media, art, and financial services.
