Roy Ren - Senior Software Engineer

About Me

Senior Software Engineer with 10+ years of full-stack development experience across enterprise, fintech, and SaaS environments. Currently driving AI-powered transformation at one of Australia's largest banks.

I believe the most impactful engineers of this era are not defined by specific frameworks — they are defined by how they harness AI to solve real problems. My focus has shifted from writing code line-by-line to architecting intelligent systems, building AI agents, and embedding AI deeply into engineering workflows to amplify both individual and team productivity.

What I Bring

🤖

AI-First Engineering

▸ Deep understanding of AI fundamentals — transformer architecture, attention mechanisms, tokenization, prompt engineering, fine-tuning, and RAG patterns
▸ AI Agent development — design and build autonomous AI agents that can reason, plan, use tools, and execute multi-step workflows
▸ AI-powered problem solving at CBA — revolutionized troubleshooting workflows, cutting mean-time-to-resolution dramatically
▸ Personal knowledge management with AI — built AI-driven knowledge base systems to capture and organize engineering learnings

🤝

AI-Enhanced Team Leadership

▸ Championed AI adoption across engineering teams — introduced AI-powered tools and workflows to raise team AI literacy
▸ AI-assisted coordination — streamlined team communication with auto-summarized meeting notes and technical documentation
▸ Multiplier mindset — built AI tools and processes that scale across the entire team, improving delivery velocity

Technical Foundation

Languages & Frameworks

Cloud & Infrastructure

AWS (Certified), CI/CD, Serverless

Data

SQL Server, NoSQL

Practices

• Microservices

• Event-driven systems

• Agile/Scrum

• TDD

• DevOps

• Infrastructure-as-code

Experience

Commonwealth Bank of Australia (CBA)

Senior Software Engineer | Aug 2023 – Present

Software Engineer | May 2021 – Aug 2023

Australia's leading financial institution. Key contributions:

▸ Spearheaded adoption of AI-assisted development practices across the team, fundamentally changing how the team approaches problem-solving and knowledge sharing
▸ Built AI-powered troubleshooting tools that analyse production incidents, correlate logs and metrics, and generate actionable resolution steps — significantly reducing MTTR
▸ Developed an AI-driven personal knowledge base system to capture and structure engineering decisions, post-mortems, and technical learnings
▸ Delivered critical features across CBA's digital banking platform using .NET, React, and AWS

Medinet

Software Engineer | Aug 2020 – May 2021

▸ Built and maintained healthcare software solutions
▸ Contributed to full-stack development using modern web technologies

KPMG Australia

Software Engineer | Apr 2020 – Aug 2020

▸ Developed software solutions for one of the Big Four professional services firms
▸ Worked in a fast-paced consulting environment delivering client-facing applications

LEAP Dev

Full Stack Engineer | Dec 2019 – Apr 2020

▸ Implemented and maintained LEAP collaboration software
▸ Full lifecycle development: implementation, testing, documentation, deployment, and maintenance

Zaliet

Full Stack Developer | Apr 2018 – Dec 2019

▸ Responsible for end-to-end implementation and maintenance of the Zaliet platform
▸ Delivered software on time while ensuring quality benchmarks

Efiniti Telecommunications Services

Automation Developer | Apr 2015 – Apr 2018

▸ Built automation systems for telecommunications workflows
▸ Early career focus on automation — a foundation that naturally evolved into AI-powered automation

Education

University of Sydney

Master's Degree, Information Technology

2014 – 2015

University of Wollongong

Bachelor's Degree, Computer Engineering (Honours)

2012 – 2014

Zhengzhou University

Bachelor's Degree, Computer Science

2009 – 2012

Certifications

AWS Certified Solutions Architect – Associate

What Drives Me

I'm obsessed with AI — not as a buzzword, but as the most powerful tool available to engineers today. I spend my evenings building AI agents, experimenting with new models, and pushing the boundaries of what's possible when human creativity meets machine intelligence.

My philosophy: The best engineer is not the one who writes the most code — it's the one who solves the most problems. AI is the ultimate force multiplier.

Get In Touch

Ready to harness AI to solve real problems? Let's connect and explore how we can build the future together.

📍 Sydney, Australia

💼 LinkedIn 🐙 GitHub