Olayinka Akeju

OLAYINKA AKEJU | Senior Full Stack Software Engineer PROFESSIONAL SUMMARY Full Stack Software Engineer with 8+ years of experience building scalable web applications across finance, e-commerce, and travel sectors. Strong expertise in modern JavaScript frameworks (React, Angular, TypeScript), Node.js backend development, and RESTful API design. Proven track record delivering mission-critical applications serving thousands of users with focus on security, performance, and code quality. Experienced in CI/CD pipelines, automated testing, and Agile development methodologies. Skilled at collaborating with cross-functional teams to translate business requirements into technical solutions. TECHNICAL SKILLS ●​ Frontend Development: React (including React 19), Angular (v10-20+), TypeScript, JavaScript (ES6+), HTML5, CSS3, SCSS, Tailwind CSS, Bootstrap, Material UI, PrimeNG, State Management (Redux Toolkit, React Query, RxJS, NgRx, Signals), Responsive design, Accessibility, Performance optimization ●​ Backend & APIs: Node.js, Express.js, NestJS, RESTful API design and development, WebSocket services, PHP/Laravel, Python/Django, API integration with third-party services (payment gateways, logistics APIs) ●​ Database: PostgreSQL, MySQL, MS SQL Server, Database design and optimization, SQL query optimization ●​ Testing & Quality: Unit testing (Jest, Vitest, Jasmine, Karma), Integration & E2E testing (Cypress, Playwright), Test-Driven Development (TDD), Code reviews ●​ DevOps & Tools: Git, GitHub, GitLab, BitBucket, CI/CD pipelines (GitHub Actions, GitLab CI), Docker, VS Code, Postman, Jira, Trello, Confluence ●​ Architecture & Design: Monorepo architecture (Nx), Component libraries and design systems, Feature-Sliced Design, Microservices concepts, RESTful principles, Secure coding practices ●​ Methodologies: Agile/Scrum, Sprint planning and retrospectives, Cross-functional collaboration, Stakeholder communication. WORK EXPERIENCE Frontend Software Engineer | Best Stay Travels, Nassau, Bahamas October 2025 – Present ●​ Developing a travel booking platform (hotels, flights, cars, cruises) using React 19, TypeScript, and Vite. ●​ Designed scalable architecture with Feature-Sliced Design and reusable UI components. ●​ Implemented advanced state management (Redux Toolkit, React Query) and caching for performance. ●​ Developed a unified checkout system with dynamic pricing, validation, and payment integration. ●​ Added real-time search, filtering, and Google Maps integration for location-based booking. ●​ Built secure authentication with JWT, OTP verification, and social login. ●​ Optimized performance with lazy loading, code splitting, and Tailwind CSS. Senior Software Engineer & Application Lead | ConstructLink, Lagos, Nigeria April 2025 – Present ●​ Architecting and building a full-stack e-commerce platform using Angular 20, Node.js/Express, and PostgreSQL with Nx monorepo. ●​ Implementing modern JavaScript patterns including signals-based state management, reactive programming with RxJS, and comprehensive test coverage (Vitest, Playwright) ●​ Managing third-party API integrations (payment gateways, logistics) and building scalable ETL pipelines for product data ●​ Translating business requirements into technical architecture decisions, balancing scalability with rapid iteration Senior Frontend Software Engineer | Eurocom CI Limited, Surrey, England April 2023 – February 2025 ●​ Built and optimized large-scale web applications with Angular and TypeScript. ●​ Collaborated with designers, backend developers, and QA teams to deliver user-focused solutions. ●​ Applied performance improvements including lazy loading, code splitting, and efficient state management. ●​ Ensured data integrity and security while working with MySQL and PostgreSQL. ●​ Participated in Agile/Scrum processes, sprint planning, and retrospectives. ●​ Contributed to technical documentation for APIs and system architecture. Senior Frontend Software Engineer | Investment-One Financial Services Limited, Lagos, Nigeria November 2019 – October 2022 ●​ Led frontend and mobile development team building Easy-Invest platform serving 25,000+ active customers managing investments ●​ Integrated Angular frontend with backend services and MS SQL Server, handling sensitive financial data with security-first approach ●​ Worked directly with product managers and business stakeholders to define features, demonstrate progress through regular demos, and iterate based on user feedback ●​ Mentored junior developers through code reviews, technical discussions, and knowledge-sharing sessions Software Engineer | Serve Consulting Limited, Lagos, Nigeria September 2017 – November 2019 ●​ Participated in full-stack lifecycle management from requirements gathering through deployment and stakeholder demos for multiple enterprise systems ●​ Built RESTful APIs and designed databases (MySQL, PostgreSQL) for enterprise applications including SPP, Clannit, and VMS ●​ Wrote secure, testable codebases using JavaScript, PHP, and SQL with focus on modularity and scalability. IT Support Engineer/Web Developer | GMTechnologies Limited, Lagos, Nigeria June 2016 – September 2017 ●​ Provided comprehensive IT support, including Microsoft Windows server administration, software installation, configuration, and troubleshooting. ●​ Managed and supported client websites, ensuring their functionality and performance. ●​ Oversaw project planning, supervision, and execution for IT-related initiatives, including network installations and equipment procurement. ●​ Resolved IT equipment and software issues promptly, ensuring minimal disruption to operations. KEY SKILLS Frontend: Angular, React, JavaScript, TypeScript, HTML5, CSS3, Tailwind Backend: Node.js/Express, REST APIs, WebSockets, PHP/Laravel, Python/Django Databases: PostgreSQL, MySQL, MS SQL Server Testing: Jest, Cypress, Playwright, Vitest, TDD principles DevOps: GitHub Actions, CI/CD, Docker Soft Skills: Stakeholder communication, agile collaboration, mentoring, problem-solving EDUCATION Bachelor of Science (BSc), Electronics & Computer Engineering Lagos State University. Lagos, Nigeria. (2010 – 2015) PROFESSIONAL DEVELOPMENT ●​ GitHub Copilot | Microsoft | 2025 ●​ Docker for the Absolute Beginner | Udemy Labs | April 2024 ●​ Introduction to Cyber Security: Stay Safe Online (24 CPD points) | OpenLearn, The Open University | February 2024 ●​ MCSA/MCSE: Windows Server 2012 | United Global Resources Limited | 2016 ●​ Mobile & Web Specialist | Udacity | 2018