@CasualDeveloper · Kuala Lumpur
Backend engineer at Nokia. Builder of developer tools. I work where complex integrations meet real-world delivery, with AI as part of the process.
APIs, services & customer systems
Diagnosis, verification & releases
Developer tools & agent workflows
6+ yearsBackend & integration engineering
10+ operatorsCustomer work across APAC & EMEA
Built, released, contributedJava · Swift · TypeScript
Selected work / 01—03
What went wrong. What I built.
How I knew it worked.
Backend · Java / WSO2 · Reliability
A qualification API failed during customer UAT. An internal call was changing the outgoing status. I traced the fault, provided the correction and coordinated the successful retest.
Trace the requestEscalation to confirmed
UAT retest
Swift · macOS · GPG / PAM
A Swift coordinator for Touch ID and Apple Watch approval across GPG signing and sudo. Clear component ownership, inspectable setup and restore behavior.
Explore the designOne coordinated workflow.
Independent components.
TypeScript · Agent workflows · OAuth
A private agent harness for context, permissions and verification, alongside merged provider contributions covering concurrency, OAuth and exact model routing.
Follow the workflowSelected contributions.
Publicly inspectable evidence.
Prefer a document?
Three-page case study portfolio (PDF)The person behind the work
I own the integration layer between telecom operators’ CRM, ordering and sales systems and Nokia’s provisioning, activation and network systems.
Outside that work, I build authentication tools for macOS, maintain an AI development harness and contribute to open-source integrations. I like understanding where systems meet, and making those boundaries work better.
I’ve also co-organized independent charity projects, including water wells in Tanzania and Malawi, and food aid in Nepal, Sri Lanka, Cambodia and Thailand.
Explore my GitHubBackend · Integration · Developer tooling