Xeng Lor

Senior Software Engineer with 10+ years of experience building scalable web applications, distributed systems, and cloud-based platforms across healthcare, e-commerce, and startup environments.

Strong full-stack background using React, Next.js, Angular, TypeScript, Node.js (NestJS, Express), and Python (FastAPI, Django, Flask), with a focus on shipping fast, iterative product features. Experienced in designing and developing RESTful APIs and GraphQL services, including e-commerce APIs for payment processing, transactions, and third-party integrations.

Proven experience building microservices and event-driven architectures using Kafka and RabbitMQ, and integrating third-party APIs such as Stripe, OAuth2/OpenID Connect, HL7/FHIR, EDI, and OpenAPI-based services.

Skilled in deploying and managing applications on AWS, Azure, and GCP using Docker, Kubernetes, and Terraform, with strong ownership of CI/CD pipelines, system reliability, and scalability in startup, fast-paced environments.

Hands-on experience with PostgreSQL, MongoDB, Redis, MySQL, and DynamoDB, including performance tuning and data modeling.

Familiar with AI-assisted development using GitHub Copilot, Cursor AI, and OpenAI APIs to improve productivity and accelerate delivery.

Strong foundation in SOLID principles, Clean Architecture, and Domain-Driven Design (DDD), with experience mentoring engineers, leading technical decisions, and collaborating cross-functionally in Agile/Scrum teams.