Oluwatimileyin Oyeti Fullstack Developer

Fullstack engineer with 5+ years building production systems, now focused on technical support for developer tooling. Experienced debugging complex issues across APIs, real-time infrastructure, and AI integrations, and communicating solutions clearly to both technical and non-technical users. Passionate about making developer tools work better through fast issue resolution, solid documentation, and automation.

Work Experience
Dec 2025 – Apr 2026

Rawura

Fullstack Developer
  • •Architected and debugged a distributed microservices system (5 services: Main API, Event Bus, WebSocket Gateway, Admin, Storefront) using Node.js, TypeScript, Express, and Next.js 15.
  • •Resolving complex cross-service failures and ensuring 99%+ uptime across 500+ daily transactions processed via RabbitMQ event-driven architecture.
  • •Designed and optimized RESTful APIs with Express.js and TypeScript, implementing role-based access control (RBAC) and MongoDB schema indexing strategies that reduced complex query response times by 35%. All diagnosed through systematic profiling and load testing.
  • •Built and maintained real-time WebSocket infrastructure with Socket.IO⁠ (intelligent 300ms batching), supporting 1,000+ concurrent users; diagnosed latency bottlenecks and reduced unnecessary API calls by 30% through state management improvements using TanStack React Query and Zustand.
  • •Developed internal tooling and analytics dashboards using Next.js 15, React 19, and the MongoDB aggregation framework; built dynamic pricing, coupon, and notification systems with advanced server-side prefetching, achieving 90+ Lighthouse performance scores.
  • •Authored technical documentation and internal knowledge bases for microservices architecture, API contracts, and onboarding workflows, enabling faster debugging and cross-team alignment.
    • Jan 2024 – present

    Remote Worldwide

    Fullstack Developer
  • •Diagnosed and resolved complex backend issues across a remote job board platform (2,000+ active users), debugging API performance regressions and data integrity issues using systematic root-cause analysis with Node.js, TypeScript, Prisma, and MongoDB.
  • •Designed and implemented automated monitoring and health-check systems, achieving 99.9% system availability by proactively detecting and resolving production incidents before user impact.
  • •Built and maintained end-to-end, integration, and unit test suites using Cypress and Jest, improving system reliability by 35% and establishing a repeatable debugging workflow for identifying regressions.
  • •Integrated Redis caching to resolve throughput bottlenecks, scaling the platform to reliably support 6,000+ monthly users. Identified via performance profiling and resolved through targeted architectural changes.
  • •Designed and deployed internal automation scripts and workflows to streamline developer operations, reducing manual overhead and improving team productivity.
    • Apr 2022 – Sep 2023

    Hypercho

    Fullstack Developer - Team Lead
  • •Led backend architecture design and debugging practices for a cross-functional engineering team, implementing message queues for API load management and resolving critical production issues, hence reducing post-launch defects by 40%.
  • •Improved authentication security and system reliability through systematic code reviews, debugging sessions, and architectural refactoring of Node.js services.
  • •Mentored developers on debugging methodologies, backend best practices, and system design patterns, establishing a culture of technical rigor and knowledge sharing.
  • •Maintained and expanded internal technical documentation, improving onboarding speed and enabling the team to self-resolve recurring issues without escalation.
    • Feb 2020 – Apr 2024

    Freelance

    Software Developer
  • •Built and integrated AI-powered features using OpenAI and LangChain into production web applications with React and Next.js — including automation workflows using n8n and Make, debugging integration issues across LLM APIs and third-party services.
  • •Diagnosed and resolved cross-browser compatibility and responsive design bugs across multiple client projects, delivering pixel-perfect implementations from UI/​UX designs.
  • •Contributed to open-source tooling (Storybook.js) and migrated client platforms to modern CMS solutions (Sanity, HubSpot), implementing structured data markup that improved SEO performance.
  • •Communicated complex technical concepts clearly to non-technical clients and cross-functional stakeholders throughout project lifecycles, ensuring alignment on deliverables and timelines.
    • Education
    Akure

    Federal University of Technology

    Computer Science
    Skills
    Programming Languages

    Typescript, JavaScript, HTML, CSS, SCSS, Python, GraphQL, SQL,Tact.

    Cloud Platforms

    AWS, GCP, Koyeb, Render, Railway

    Others

    Tailwind CSS, Storybook, Cypress, Jest, Microservices, NodeJS,Clojure, CI/​CD pipelines, n8n, make.com

    Frameworks

    Fastify, Express, NextJs, React, Redux

    Payment Gateway

    Stripe, PayPal, Paystack

    Soft Skills

    Collaboration, Time Management, Communication, Active Listening, Problem-solving, Technical documentation

    Database

    MongoDB, PlanetScale, Redis, Big Data

    Version Control

    Git, GitHub

    Support & tooling

    Technical documentation, knowledge base authoring, Ticket triage, Slack support, CI/​CD