// about
I build the parts of frontend people don't see, as carefully as the parts they do.
I'm Funsho Cornelius Olusumbo — a frontend engineer in Lagos, Nigeria, with five years shipping production web apps. My work spans real-time systems, custom authentication and RBAC architecture, e-commerce, payments, and AI product frontends. I care about auth that never races, realtime that never stutters, and performance you can measure — and I take a project all the way from design system and browser-concurrency engineering to deployment and security hardening.
65%
faster loads via Lighthouse & Core Web Vitals audits
45%
shorter dev cycles via RBAC workflows & component libraries
5 yrs
shipping production frontends end to end
Toolkit
Core
React 19Next.js 16TypeScriptTanStack Start/RouterReact NativeApp RouterServer ActionsReact Compiler
State & data
Redux ToolkitRTK QueryTanStack QueryZustandConvex (realtime)RESTGraphQL / Apollo
Auth & security
Custom JWT (access/refresh)bcryptRBACWeb Locks single-flightenv validationWAF & bot protection
Styling & UI
Tailwind CSS v4Radix UIMaterial UIFramer MotionCVA design systemsStorybooklight/dark theming
Testing & quality
JestReact Testing LibraryCypressPlaywrightLighthouseCore Web VitalsWCAG 2.1
Backend & DevOps
Node.jsExpresscustom Next.js serversMongoDBPrismaNginxPM2DockerGitHub ActionsVercel
Experience
Feb 2026 — Present
Web & Systems Engineer — Technocrat Technologies / Blessing Computers
Led auth & RBAC architecture for an internal admin dashboard, replaced fragile token refresh with a Web Locks single-flight implementation, built a custom Next.js server for the storefront, and hardened production security. Stacked PRs, documented ADRs, and manage hosting infra (Nginx, PM2, SSL, DNS).
Aug 2025 — Apr 2026
Frontend Engineer — Pikkam
Architected core marketplace features in Next.js, TypeScript, and Tailwind — multi-step forms, OTP flows, dynamic product views, and RTK Query caching that cut redundant network requests.
2025 — Present
React Instructor (part-time) — Pedagon Academy
Designed the full 8-week ReactJS curriculum; mentor learners through live coding, code reviews, and debugging.
May 2023 — May 2024
Frontend Engineer — BulqSoft
Built a reusable TypeScript design system (−40% duplication), improved performance by 65%, and integrated Stripe payments with CI/CD (−30% production bugs).
Aug 2021 — May 2023
Frontend Engineer — Universal Site Technologies
Shipped React/Next.js components for Splunk security dashboards, built RBAC workflows and component libraries (−45% dev cycle time), and delivered chart visualizations with 98%+ test coverage.
Teaching
React Instructor, Pedagon Academy
I designed the full 8-week ReactJS curriculum and teach it part-time — live coding, code reviews, and debugging support that gets learners industry-ready.
Certifications
Meta Frontend Developer Professional Certificate
Google UI/UX Design Specialization — Coursera
Generative AI Certificate — Google
TypeScript for Large Applications · Node.js API Masterclass
Open to remote roles and freelance builds.
get in touch →