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Johnson Ayinla

@johnsonayinla

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I build secure, production backend systems and APIs with TypeScript, Node.js, NestJS, React, and Next.js.

Nigeria

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At UkConcepts, I own the end-to-end design and delivery of RESTful API services for the core web platform, including JWT and OAuth2 authentication architecture. I've also led the architecture and production release of AutoSalus, Obligo, and Veriq at InsureOnGo, integrating insurance-provider APIs for policy management, pricing, and claims.

I build full-stack products with TypeScript, Node.js, NestJS, React, and Next.js, with a focus on secure APIs, clean system design, and reliable developer workflows. My work has improved application performance by 30% and API response time by 40%, and I mentor junior developers on clean code practices.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

UkConcepts Ltd

Jan 2024 - Present (2 years 9 months)

Owned end-to-end design and delivery of RESTful API services for the company's core web platform. Implemented JWT and OAuth2 authentication and authorization architecture.

REST APIs JWT OAuth TypeScript NodeJS NestJS PostgreSQL Docker CI CD

Lead Product Engineer

InsureOnGo

Jan 2025 - Jun 2026 (1 year 5 months)

Led architecture and development of three mobile applications from design to production. Integrated APIs from multiple insurance providers for real-time policy management and claims processing.

Mobile Development API Integration System Design TypeScript NodeJS NestJS PostgreSQL Docker

Software Developer

African Institute for Artificial Intelligence

Apr 2025 - Nov 2025 (7 months)

Built responsive web applications in Next.js and NestJS, improving performance by 30%. Designed JWT-based authentication and access-control system.

Next.js NestJS JWT Authentication Database Optimization Agile

Frontend Developer Intern

Enoverlab

Jun 2024 - Oct 2024 (4 months)

Built reusable UI component systems in React and Tailwind CSS. Partnered with design, backend, and product teams to define user stories and sprint goals.

React Tailwind UI Components Agile

Frontend Developer

Zidio

Feb 2023 - Jul 2023 (5 months)

Architected and delivered a full-stack donation platform with React and Node.js. Built dynamic UI components and optimized API consumption with Redux Toolkit.

React NodeJS Tailwind Redux toolkit Paystack Flutterwave Stripe