Software Engineer

Building the future,
one commit at a time.

I craft high-performance systems and elegant interfaces that scale from startup to billions of users.

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TypeScript · React · Node.js · PostgreSQL · Kubernetes · AWS · Docker · Python · TypeScript · React · Node.js · PostgreSQL · Kubernetes · AWS · Docker · Python ·
I build systems that handle millions of requests, ship interfaces users love, and write code that stands the test of time.

About Me

Engineered for
impact.

👨‍💻

Hi, I'm Siyuan — a full-stack software engineer with 7+ years building distributed systems and consumer products at scale. I thrive at the intersection of complex backend architecture and pixel-perfect UI.

Previously at PSA Singapore and Thales Digital Factory. I believe the best engineering is invisible — it just works, beautifully.

7+
Years of experience

Expertise

Built to ship
at every layer.

⚡
Backend Systems
High-throughput APIs, event-driven architectures, and distributed systems that scale horizontally without breaking a sweat.
Java Kotlin NodeJS ExpressJS Azure Service Bus Solace
🎨
Frontend & UI
Performant, accessible interfaces with meticulous attention to motion design, typography, and the details that users feel but rarely see.
React TypeScript Angular HTML CSS
🗄️
Data & Storage
Schema design, query optimization, caching strategies, and the dark art of migrations without downtime.
PostgreSQL Elasticsearch
☁️
Cloud & DevOps
Infrastructure as code, container orchestration, CI/CD pipelines, and observability stacks that catch issues before users do.
Microsoft Azure Kubernetes Terraform
🤖
AI & ML
LLM integrations, embedding pipelines, RAG architectures, and fine-tuning workflows that deliver real business value.
Python CrewAI
🔒
Security & Auth
OAuth flows, zero-trust networking, encryption-at-rest, and penetration testing that keeps data safe at every layer.
OAuth 2.0 JWT mTLS Vault

Experience

Where I've been
building.

2023 — Present
Software Engineer
Thales Digital Factory
Accelerating Thales' digital transformation by architecting and delivering high-impact MVPs and Proof-of-Concepts (PoCs) across aerospace, defense, and security sectors.
2021 - 2023
Senior Software Engineer
PSA Singapore
Engineered scalable web applications using Java, Spring Boot, and Angular/TypeScript, delivering high-quality features within a fast-paced Agile product team. Actively engaged in Extreme Programming (XP) and pair programming to reduce code defects and foster team learning.
2019 - 2021
System Analyst / Software Engineer
PSA Singapore
Core contributor to internal web application in Java Springboot, Angular frameworks in a lean agile product team

Contact

Let's build
something great.

Open to senior IC and staff roles, technical advisory, and founding engineer opportunities.

✉️ hello@siyuan.dev 💼 LinkedIn 🐙 GitHub 🦊 GitLab