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Kotoye Gbemisola

@kotoye

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Senior Software Engineer specializing in backend and full‑stack solutions with strong ownership.

Nigeria

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What I'm looking for

I seek senior backend or full‑stack roles where I can design scalable APIs, improve architecture and testing, mentor teams, and work in collaborative, growth‑focused environments.

I am a Senior Software Engineer with extensive experience building modular, testable, and scalable backends using TypeScript, NestJS, Node.js and .NET technologies. I combine strong ownership, clear communication, and a passion for continuous learning to deliver reliable software.

I have designed REST and GraphQL APIs, optimized database schemas across MySQL, PostgreSQL and MongoDB, and implemented background job systems and CI/CD pipelines to improve reliability and deployment velocity. I apply SOLID principles, Domain-Driven Design, and Clean Architecture to ensure maintainability and testability.

My experience spans fintech, HR/leave management, internet marketing services, and aviation systems; I have delivered features that reduced administrative complexity, improved performance through testing, and enforced security and contract validation. I also create reusable libraries and conduct thorough code reviews to raise engineering standards.

I enjoy working in cross-functional teams, mentoring peers, and contributing to end-to-end product delivery. I seek roles where I can drive backend architecture, improve developer experience, and help teams ship robust, well‑tested software.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Flex

Sep 2025 - Dec 2025 (3 months)

Built modular, testable NestJS backends and REST APIs for instant peer-to-peer payments in Africa, optimizing data retrieval with MySQL/TypeORM and delivering scalable components and background jobs to improve system reliability.

TypeScript NestJS MySQL TypeORM REST APIs Docker Jest Redis CI CD

Senior Software Engineer

Cocoon

Dec 2024 - Mar 2025 (3 months)

Developed modular NestJS backends, GraphQL APIs and PostgreSQL schemas for an employee leave management system, implemented end-to-end tests with Cypress and background jobs with BullMQ to ensure reliable scheduling and reduced production bugs.

TypeScript NestJS GraphQL PostgreSQL Cypress BullMQ Redis AWS Sequelize

Senior Backend Engineer

Enyata

Jan 2024 - Jan 2025 (1 year)

Implemented and maintained large-scale .NET-based software, conducted unit and integration tests, produced reusable libraries and led code reviews to ensure regulatory and performance standards.

C++.NET Unit Testing Integration Testing Microservices SQL Server Entity Framework Code Review CI CD Documentation

Senior Software Engineer

Be Rich Company GmbH

Apr 2024 - Nov 2024 (7 months)

Implemented responsive web and React Native apps, designed Swagger-documented APIs, enforced contract validation with DTOs/Pipes and applied DDD and Clean Architecture to improve maintainability and testability.

React Native React TypeScript DDD Unit Testing TDD CI CD Redux

Software Engineer

Skyway Aviation Handling

Aug 2021 - Jan 2024 (2 years 5 months)

Designed and implemented scalable RESTful APIs and microservices using .NET Core, integrated EF Core with SQL Server/PostgreSQL, and implemented JWT auth and security controls to deliver robust aviation handling solutions.

C++.NET Core SQL Server PostgreSQL REST APIs JWT Microservices Performance Tuning & Security

Frontend Software Developer

Code Inclusive

Nov 2020 - Nov 2021 (1 year)

Implemented responsive web interfaces in React with Material UI from Figma designs and performed unit and integration tests to optimize frontend performance and maintainability.

React Material UI CSS3 Figma JavaScript Unit Testing Integration Testing Responsive Design Git Component Design

Software Engineer

Summitech Computing

Sep 2018 - Oct 2020 (2 years 1 month)

Optimized backend microservices using Node.js/ES6, integrated with Cassandra NoSQL, and refactored codebases to improve performance and maintainability across the company's backend workflows.