Jack L.

Background

About Jack L.

I’m a Senior Software Engineer with 10 years of experience building and scaling cloud-native applications for fintech, logistics, and SaaS platforms. I’m passionate about turning complex business challenges into clean, maintainable, and high-performing solutions - from responsive user interfaces to event-driven backend systems. I work across the full stack, delivering modern web and mobile applications and developing robust microservices. My experience includes event-driven architectures, API-first development, CI/CD automation, and containerized deployments on AWS and Azure. I focus on performance optimization, secure design, and scalability, ensuring products can handle growth and heavy traffic. Expertise: Frontend: React.js, Next.js, Vue, Angular, React Native, Redux, TypeScript, JavaScript (ES6+), HTML5, CSS3/SASS Backend: Node.js (Express), Go, Python (Django/FastAPI), C#/.NET Core, REST & GraphQL APIs Mobile: React Native, cross-platform app development Databases: PostgreSQL, MySQL, MongoDB, Redis Architecture: Event-driven microservices, API-first systems, performance optimization, containerized deployments Cloud & DevOps: AWS (Lambda, S3, RDS), Azure Functions, Docker, Kubernetes, Terraform, GitHub Actions, Jenkins Testing & Quality: Jest, Cypress, Playwright, TDD/BDD practices Domain Experience: Fintech, logistics, enterprise SaaS