San Dang

Associate Software Engineer

Mon, 01 Jan 0001 00:00:00 +0000

Leveraged Java technologies (Spring boot framework) to build reliable microservices-based back-end, enhancing system modularity by applying design patterns.
Utilized JPA and MySQL to implement layers for database interactions.
Built responsive and intuitive front-end interfaces with ReactJS, improving user experience.
Implemented secure authentication and authorization mechanisms using JWT and Spring Security, ensuring robust access control and data protection across services.
Collaborated with BA team to clarify software requirements, creating detailed use case diagrams, page mock-ups, class diagrams, sequence diagrams, and ERDs to align development with business objectives.
Deployed applications locally using Docker for detailed development.
Enhanced code quality by implementing comprehensive unit tests for both front-end and back-end.

Epoch Converter

Mon, 01 Jan 0001 00:00:00 +0000

Convert Unix timestamp to human-readable dates, vice versa, and find epoch ranges.

Software Engineer

Mon, 01 Jan 0001 00:00:00 +0000

Researched and implemented multiple features with advanced technologies including Dask, Faust, and Kafka Streams.
Implemented data pipelines using Java, Scala and Kafka Stream.
Implemented validation system using Python, Faust, Dask.
Implemented module using Spring Boot, ReactJS and graphQL.
Maintained core system using Java, Go.
Applied proper data structures and algorithms based on the project’s coding standard.
Mentored new members.

String Generator

Mon, 01 Jan 0001 00:00:00 +0000

Generate random text strings

Software Engineer

Mon, 01 Jan 0001 00:00:00 +0000

Main responsibility for the implementation of multiple features.
Implemented back-end system using Java and Spring Boot integrated with mongodb and redis as database / caching, gRPC for internal back-end synchronous communication, RabbitMQ and Redis Stream brokers for asynchronous communication, RestAPI and Websocket for front-end - back-end communication.
Collaborated with the QA team to design and implement automation testing suites using Typescript and Playwright.
Deployed multiple servers for development and testing environments, including SMTP servers and HTTP proxy servers…, streamlining development workflows.
Mentored new members.

Senior Software Engineer

Mon, 01 Jan 0001 00:00:00 +0000

Performed shift-left development approach.
Implemented automation testing with Playwright.
Planned and implemented multiple features including: full-text search, IAM, server-sent notification … in a domain-driven microservices system.
Contributed to improve overall application architecture.
Implemented monitoring module including tracing, metrics tracking, logging with tempo, prometheus, loki and grafana.

How I build my homelab

Wed, 14 Jan 2026 00:00:00 +0000

Overview

I always think it’s a great idea for every dead serious software developer to personally own a DIY data center, not from cloud provider BS, but a bare metal data center that you can see every solder joins from its mainboard, feel the weights of its CPUs, feel the difficulties of making components work together, etc. Those feelings will make you ascended to higher dimensions.

Joking aside, but it’s cool to: