Royston LimSingapore · 1.35°N 103.82°E

I architect data and AI systems that regulated enterprises can trust.

Data & AI customer engineer at Google Cloud, working with financial services teams on lakehouse platforms, GenAI agents and the governance around them. Before cloud, I spent 20 years engineering live sound systems where downtime was not an option.

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Fig. 01A governed data and AI platform · illustrative

GovernCatalog, policy and masking sit between the data and every consumer.

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At a glance

Now
Customer engineering, Data & AI, Google Cloud
Focus
BigQuery lakehouse, GenAI agents, data governance
Certified
Google Cloud Professional Cloud Architect
Sector
Financial services and regulated industries
Languages
English, Mandarin

01 Featured work

A proof you can run yourself.

All projects →

More interactive demos are in progress and will appear here as they are ready.

02 Architecture in practice

Problems I have solved.

Recent work with financial services teams at Google Cloud.

01 Security · Networking

Private AI access

Designed a way for analysts on locked-down virtual desktops to reach Agent Platform over private connectivity, with no internet egress.

02 Data platform · Reliability

Production diagnostics

Traced notebook kernel failures on shared Dataproc clusters to YARN scheduler starvation, and wrote a diagnostics CLI to prove it.

03 AI · Agents

GenAI agents

Built a multi-agent pipeline with the Agent Development Kit and Gemini that turns structured briefs into marketing banners.

04 AI · Quality

LLM evaluation

Designed a multi-tier evaluation framework combining LLM judges, deterministic SQL diffing and side-by-side comparison.

03 Skills

The stack, layer by layer.

L4

AI & agents

  • Gemini
  • Agent Development Kit
  • Agent Platform
  • Vector Search
  • Model Armor
  • LLM evaluation

L3

Data & lakehouse

  • BigQuery
  • Dataproc
  • Spark
  • Knowledge Catalog
  • Apache Iceberg
  • Looker

L2

Security & networking

  • IAM
  • VPC Service Controls
  • Private Google Access
  • OAuth 2.0 / OIDC
  • Data residency

L1

Engineering

  • Python
  • TypeScript
  • React
  • FastAPI
  • Linux
  • Playwright

04 Experience

From signal flow to data flow.

2026 – now

Customer Engineering, Data & AI

Google Cloud · Financial services · Singapore

Private AI access, production diagnostics, GenAI agents and LLM evaluation. The detail is in Architecture in practice.

2024 – 2025

Advanced Professional Certificate, Cloud Infrastructure Engineering

Nanyang Technological University (SCTP) · Singapore

2004 – 2024

Systems Sound Designer & Engineer

Live events, concerts, theatre and games · Singapore and region

  • Zero-downtime systems: designed and ran audio systems for live productions where a failure is heard by everyone in the room.
  • End to end: owned hardware and software integration, fault tolerance and stakeholder alignment from brief to show night.

05 Contact

Want to talk data, AI or architecture?

I am always glad to compare notes on lakehouse design, GenAI agents and governance for regulated industries.

Or write to [email protected]