Japheth Onyenuwe

• Conducted technical interviews for new Engineers, which helped grow the team from 6 to 11 Frontend developers
• Removed uses of Hungarian notation from the codebase, making it easier for developers to write better JavaScript code
• Migrated our REST API calls to GraphQL to leverage the new, more performant servers. It also increased the speed and efficiency of network calls by at least 20% and led to reduced costs from the infrastructure teams
• Optimized our client-facing, thereby reducing load time by at least 30%
• Integrated In-App notifications to our client-facing web application and implemented the core functionality on our web service leveraging NOVU
• Wrote unit tests in our codebase where it wasn’t factored. This made us realize some buddy code
• Integrated webhooks feature on our client-facing web application for enterprise merchants
• Integrated invoicing feature on our client-facing web application for enterprise merchants
• Refactored request terminal flow on our client-facing web application, thereby increasing terminal requests by 40%
• Set up central logging and monitoring on our codebase to enable proactivity catching and resolving of bugs

Lead Frontend Developer for Lybertine, a Next.js/TypeScript event booking and management platform. Lead frontend architecture, feature development, and technical decisions for organizer and attendee experiences.

• Sub-Organizer Management System — Architected and built a management module for delegating event operations. Designed profile management, metrics (events managed, check-ins, success rate, hours logged), permission controls, event assignment/unassignment, suspend/resume, and CRUD operations. Established reusable component patterns, API integration with React Query, and paginated data tables.
  
• Authentication & User Management — Led improvements to sign-in/sign-up flows, password reset, and auth layout. Improved error handling and user feedback.
  
• GDPR Compliance — Implemented a GDPR data deletion confirmation page with clear messaging, deletion details, and legal compliance notes.
  
• Real-Time Notification System — Built a notification component with real-time updates, unread badges, sound settings, click tracking, and a dropdown with mark-as-read. Integrated with analytics for campaign tracking.
  
• Payment & Checkout — Enhanced Stripe payment flows, including success handlers, payment confirmation components, and payment state management.
  
• Event Management Features — Improved attendee-facing pages (thank-you, search results), ticket management, and event detail components.
  
• UI/UX Enhancements — Updated mobile navigation, homepage components, settings pages, and promoter functionality for better responsiveness and usability.

• Spearheaded the optimization of our frontend codebase, thereby reducing load time by at least 60%
• Chaired the setup of a mandatory full testing life cycle, which increased the overall quality of our codebase
• Leveraged proficiency in GraphQL to implement an internal CMS application using Node.js
• Set up central logging and monitoring on our codebase to enable proactivity catching and resolving of bugs
• Rebuilt and implemented new product designs for the web application - Hank

• Rebuilt and implemented new product designs for the fintech app – Mutual Funds.
• Built and implemented product designs for mutual fund administration
• Built and implemented product designs for Mutual Fund account opening
• Integrated third-party providers (trove) foreign stocks into our existing application and refactored the Nigerian stock market feature to be more accessible

• Integrated push notification for FinTech apps - Zenith Mobile Banking Gambia and Zenith Mobile Banking Sierra Leone
• Reduced data collection errors by 60% by improving input data validation across the app
• Built and implemented product designs for the company website

• My First work experience taught me a lot about working with a team in a professional environment, improved my communication skills, and helped me understand and develop a system from the planning stage to the maintenance stage. I also rebuilt and implemented new product designs for our applications.