Leading end-to-end development of production web and mobile applications, designing scalable microservices architecture, and mentoring developers in an Agile/Scrum environment.

• Lead end-to-end development of production web and mobile applications using React.js, Vue.js, Node.js, and Laravel.
• Designed scalable microservices architecture, reducing system downtime by 40% through improved fault isolation.
• Optimized critical PostgreSQL, MySQL, and MongoDB queries, cutting average API response time by 35%.
• Developed RESTful and GraphQL APIs consumed by multiple frontend clients and third-party integrations.
• Established CI/CD pipelines with GitHub Actions, reducing manual deployment time by over 60%.
• Mentored junior developers through structured code reviews, raising team code quality by 30%.

Architected large-scale SPAs and high-throughput backend services, implemented Docker-based microservices, and enforced API security standards across production fintech and enterprise applications.

• Architected large-scale SPAs with Vue.js and Nuxt.js, improving page load time by 50% via SSR and code splitting.
• Built high-throughput backend services with NestJS and Django, handling peaks of 10,000+ concurrent requests.
• Implemented Docker containerization and microservices, enabling horizontal scaling that cut infrastructure costs by 25%.
• Enforced JWT authentication and OWASP Top 10 standards, resulting in zero security incidents over 18 months.
• Configured GitLab CI/CD pipelines, raising unit test coverage from 40% to 85%.
• Authored technical documentation, improving developer onboarding time by 3 weeks on average.

Delivered responsive web and cross-platform mobile applications for e-commerce, logistics, and education clients, with a focus on clean API design and pixel-perfect UI.

• Delivered responsive web apps with Vue.js, React.js, and Laravel across e-commerce, logistics, and education verticals.
• Developed cross-platform mobile apps with Flutter, reaching 5,000+ active users within 3 months of launch.
• Designed contract-first RESTful APIs, reducing integration bugs by 45%.
• Implemented e-commerce features and payment gateways (Stripe, PayDunya), processing 500+ transactions per day at peak.
• Optimized MySQL schemas and frontend code, decreasing page load times by 30%.

Built responsive, mobile-first interfaces, integrated REST APIs, and applied SEO and web performance optimizations in close collaboration with backend and design teams.

• Built responsive, mobile-first interfaces with HTML5, CSS3, JavaScript, and Bootstrap.
• Integrated REST APIs and created Figma prototypes with the backend and design teams.
• Applied SEO and performance optimizations (lazy loading, image compression), improving PageSpeed scores by 20 points.