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Oluwatimilehin Olayinka

@oluwatimilehinolayin

Lead Software Engineer at Swappr, building a device trade-in marketplace with dynamic pricing, vendor tools, and payment flows.

Nigeria

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At Swappr, I own the full-stack architecture and delivery for a device trade-in marketplace, vendor portal, and admin panel. I built a configurable valuation engine that prices trade-ins using condition-based rules, along with vendor onboarding and payment flows.

At Martad Holdings Limited, I led frontend work for ScreenClass, an LMS serving over 5,000 learners across Nigeria, and delivered real-time analytics dashboards. I also built Revios’s video-and-audio review feed, with server-rendered pages and crawlable transcripts to support SEO.

Experience

Work history, roles, and key accomplishments

Current

Lead Frontend Engineer

Current

Martad Holdings Limited

Sep 2024 - Present (2 years)

Led frontend architecture for an LMS serving over 5,000 learners, building full user and admin UI in Next.js. Architected a real-time analytics dashboard and integrated telecom APIs for micro-billing.

Next.js React TypeScript Server Actions Jest React Testing Library MSW Test Driven Development Web Vitals Accessibility

Current

Lead Software Engineer

Current

Swappr

Jan 2024 - Present (2 years 8 months)

Owned full-stack architecture and delivery across three applications as sole engineer, from database design through production deployment. Architected a configurable valuation engine and built vendor onboarding with role-based access control.

NestJS PostgreSQL TypeORM React Next.js TypeScript Tanstack Query Tailwind RBAC Payment Integration SEO

Associate Frontend Developer

Revios

Apr 2026 - Aug 2026 (4 months)

Led frontend development of a consumer review web app with a TikTok-style vertical feed, built in Next.js 16 and deployed via OpenNext on Cloudflare Workers. Owned the player architecture end-to-end, ensuring full server-rendered HTML and SEO correctness.

Next.js OpenNext Cloudflare Workers Tanstack Query SSR SEO JSON LD Vitest

Lead Frontend Engineer

SecurEducation

Jul 2025 - Jan 2026 (6 months)

Refactored a large-scale monorepo into independently deployable repositories, improving CI/CD efficiency. Engineered real-time admin dashboards with Vue and React Query, and implemented microinteractions with Framer Motion.

Vue.Js React Query Framer Motion Vee Validate Monorepo CI CD

Full Stack Developer

ZummitAfrica

Aug 2024 - Mar 2025 (7 months)

Built a course sales and payment interface integrated with Paystack, and automated blog content delivery via the Hashnode API. Designed a data-driven dashboard to visualize user retention and course analytics.

Paystack Hashnode API Dashboarding SEO Analytics

Frontend Engineer

Communisolve

Sep 2024 - Jan 2025 (4 months)

Engineered a multi-step post creation flow with route-based redirects and stateful form orchestration. Built a WebSocket-powered real-time group chat system and integrated Google Gemini AI for auto-generated responses.

WebSockets Google GeminiAI React State Management Real time Dashboards

Freelance Full Stack Developer

Self-Employed

Jan 2024 - Jun 2024 (5 months)

Architected the backend for an African investment intelligence platform using Supabase with custom SQL functions and relational data models. Built a passwordless authentication event management app using Firebase.

Supabase Firebase SQL CRUD Authentication

Education

Degrees, certifications, and relevant coursework

Yaba College of Technology

Higher National Diploma, Computer Science

2021 -

Activities and societies: Active member of the Nigerian Association of Computing Students (NACOS).

Pursuing a Higher National Diploma in Computer Science, with active involvement in the Nigerian Association of Computing Students and an internship improving the school's transcript request interface.