David Olaleye
@davidolaleye
Senior Frontend Developer and Team Lead building scalable React/Next.js apps with performance, accessibility, and clean architecture.
NigeriaWhat I'm looking for
I’m a Senior Frontend Developer and Team Lead with 4+ years of experience delivering scalable web applications across EdTech, B2B SaaS, telecommunications, e-commerce, and non-profit teams. I specialize in React.js, JavaScript, TypeScript, Next.js, and Redux, and I’m known for reusable component architecture, seamless API integration, and production-ready delivery end-to-end.
In my recent roles, I led frontend delivery for multiple enterprise and SaaS products, ran code reviews, mentored junior developers, and improved key performance outcomes—like reducing page load time by 30% and cutting iteration cycles by 25%. I also prioritize quality through WCAG accessibility, strong API patterns (Axios/Redux, RESTful APIs, GraphQL where needed), and careful performance and security improvements.
Experience
Work history, roles, and key accomplishments
Frontend Developer & Team Lead
ULININ
Jan 2022 - Present (4 years 5 months)
Led frontend delivery across multiple enterprise and SaaS products, including team leadership, code reviews, and quality assurance. Developed a React-based academic platform for 3,000+ students, integrated 100+ REST API endpoints, and improved page load time by 30% while strengthening RBAC to close data-access vulnerabilities.
Frontend Developer (Part-time)
IT & Media Services, University of Ibadan
Jun 2023 - Dec 2023 (6 months)
Built a React-based file management system that reduced inter-department data-sharing time by 40% and replaced a manual workflow. Redesigned the MacArthur Resource Center interface, improving user experience and boosting resource utilization by 70%.
Frontend Developer Intern
Side Hustle Bootcamp
Feb 2022 - May 2022 (3 months)
Developed responsive, cross-browser web features using HTML5, CSS3, JavaScript, and React while maintaining WCAG accessibility standards. Delivered production-ready UI components aligned with accessibility and usability requirements.
Education
Degrees, certifications, and relevant coursework
Obafemi Awolowo University
Bachelor of Science in Civil Engineering, Civil Engineering
2016 - 2022
Grade: Second Class Upper
Earned a B.Sc. in Civil Engineering at Obafemi Awolowo University, graduating with a Second Class Upper.
Tech stack
Software and tools used professionally
Availability
Location
NigeriaAuthorized to work in
Job categories
Skills
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