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Oluwaseun Jayeoba ✏ edited

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SENIOR FRONTEND ENGINEER · Vaulta · Lagos, Nigeria · in 1 pool
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Contact

Email
seunjay92@gmail.com
Phone
+234 907 510 3917
LinkedIn
https://www.linkedin.com/in/oluwaseunjayeoba
GitHub
https://github.com/seunjay
Portfolio
https://seunjay-portfolio.netlify.app/
Website
https://seunjay-portfolio.netlify.app

Career & Education

Position
SENIOR FRONTEND ENGINEER
Company
Vaulta
Years experience
5
School
University Of Ibadan

AI Enrichment

Senior Frontend Engineer with 5+ years building scalable React and TypeScript applications, focused on delivering performant, accessible UIs, reusable component libraries, and design-driven engineering to improve UX and accelerate product delivery.
Primary role
Frontend Engineer
Seniority
senior
Status
ai_done
Skills
HTML CSS JavaScript React.js Vue.js React NextJS TypeScript JavaScript (ES6+) Component-driven Design Design Systems UI Performance Optimization Redux Toolkit Zustand RTK Query RESTful APIs Unit & Integration Testing Jest React Testing Library Cypress Vite Webpack Git GitHub Actions CI/CD Docker Vercel Netlify Tailwind CSS Nuxt Vue Vuex NestJS MongoDB ArcGIS Angular C# NodeJS SQL
Signals
has_real_projects: yes oss_contributor: no ai_ml_experience: no strong_github: no senior_level: yes

From the resume

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Extracted by Qwen3.6 from the candidate's own PDF. Authoritative for skills, summary, and the experience timeline.

Experience

SENIOR FRONTEND ENGINEER · Vaulta Inc
2025-03 → present · Victoria Island, Lagos
  • Led the development of a cross-border payment solution with NextJS, optimizing money-movement flows across multiple payment corridors, increasing successful transaction completion by 18%.
  • Built reusable component libraries and modular architectures using component-driven patterns to ensure design system consistency and accelerate feature delivery across products.
  • Implemented robust state management solutions with Redux Toolkit, establishing clear abstractions and extensible patterns to improve maintainability and enable cross-team-collaboration.
  • Championed testing practices using Jest and React Testing Library, increasing test coverage to 85% on critical user flows and reducing release defects by 20% through unit and integration tests.
  • Collaborated closely with product and design teams to shape intuitive, accessible user experiences and participated in pair programming and code review processes to raise engineering quality.
FRONTEND ENGINEER · Payaza Africa
2023-10 → 2025-02 · Victoria Island, Lagos
  • Led the development of a high-traffic event ticketing platform in React/Next, shipping-user-focused features that supported 500, 000+ ticket sales and scaled to 1, 000+ sold-out events while maintaining front-end reliability and performance.
  • Designed and published an internal checkout SDK as an NPM package to standardize payment flows, increase reusability, and reduce implementation time across products, demonstrating a bias toward shipping value and gathering feedback.
  • Revamped the public-facing site into a component-driven architecture using Nuxt and-Tailwind CSS, improving UX engagement by 15% and implementing accessibility and usability-improvements in collaboration with designers.
  • Optimized bundle delivery with strategic code-splitting and lazy loading to reduce JavaScript-payloads by 20%, and integrated GA4/GTM for analytics to support data-driven product decisions and A/B experimentation.
  • Integrated multiple third-party RESTful APIs and payment gateways, ensuring secure, reliable API interactions and streamlined user workflows.
SOFTWARE ENGINEER · Releaf Nigeria
2021-10 → 2023-10 · Lekki, Lagos
  • Delivered a geospatial mapping tool with ArcGIS and Vue that provided real-time crop-supply insights, improving sourcing decisions and supply chain efficiency by 30% through-performance-conscious frontend design.
  • Collaborated in migrating all backend services from NodeJS to NestJS to support faster API responses, enabling the building of more responsive and reliable user experiences.
  • Translated complex prototypes into production-ready, accessible web applications in partnership with designers, reducing design-to-development rework by 30% and improving UX polish.
  • Performed thorough code reviews, enforced best coding practices, and reduced technical debt by introducing modular components and consistent state management patterns.
SOFTWARE DEVELOPER · Guaranty Trust Bank
2020-01 → 2021-09 · Lekki, Lagos
  • Developed and maintained APIs consumed by web and mobile apps, supporting a user base of over 1 million customers and ensuring robust, secure data flows between frontend and backend systems.
  • Enhanced in-house applications with performance improvements and UI refinements that-increased operational efficiency by 20% and improved end-user experience.
  • Managed critical application enhancements and coordinated deployments to minimize downtime, working with CI/CD pipelines and version control to ensure reliable releases.
  • Provided second-level support for e-banking solutions, diagnosing issues, and implementing fixes to maintain service availability and reliability for customers.

Education

University Of Ibadan · M.Sc. · Environmental Statistics · 2019
University Of Ibadan · B.Sc. · Statistics · 2015
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Provenance
id: f190871f-daa2-58cc-8e92-e4932a4ed4a7
Created: 1778530728
Updated: 1778530728