I am a software architect and systems engineer with a 16-year track record of building and scaling digital infrastructure. My career has been defined by a constant evolution: writing code in various languages, designing resilient systems, and managing the environments they live in. While my journey started with a formal education, it is fueled by a restless curiosity and a love for self-hosted experimentation. I use this space to document my learning experiences and the technical insights I pick up along the way.
Core Skills
The following is a list of my core skills (not an exhaustive list) which I have been practicing for the past few years:
| Programming Languages | Java (Spring) Python Linux (Bash) |
| Architectures | Distributed systems Event-driven Serverless Microservices Containerization (Docker) |
| Cloud | OCI AWS Terraform Kubernetes |
| Database Systems | RDBMS (SQL)DynamoDB (NoSQL) |
| Web Development | JavaScript HTML CSS |
| CICD | Git JUnit 5 SonarQube Maven Gradle Jenkins GitHub Actions |
| Systems Engineering | DNS Web Servers Load Balancers Virtualization Networking |
| Operations | Incident Management Change Management Observability |
| Misc. | Agile Project Management |
Work Experience
 | Oracle Principal Technical Operations Engineer (Technical Lead) June 2025 - Present |
Served as Technical Lead and Founding Engineer to establish, operate, and maintain Oracle’s first sovereign hyperscale cloud in Singapore, driving day-2 operational excellence, compliance, and continuous maintenance for classified workloads running on Oracle Cloud Infrastructure (OCI).
Key achievements:
- Co-authored the Concept of Operations (ConOps), establishing the operational procedures and best practices to meet stringent uptime, compliance and security requirements of classified workloads.
- Designed and executed comprehensive technical and operational training for both the newly formed engineering workforce and enterprise customers, accelerating day-2 readiness and standardizing operational excellence.
- Provided technical guidance and mentorship to engineers, fostering a culture of continuous learning.
- Responsible for incident management, orchestrating efforts across various regional teams to ensure rapid resolution of critical issues while maintaining transparent stakeholder communication.
 | JPMorganChase Associate (Software Engineer) 2022 February - 2025 April (3 years 2 months) |
Platform engineer responsible for the design and implementation of AWS cloud-native software solutions (data engineering and data pipelines) to serve the Big Data needs of various line of businesses in the bank.
Key achievements:
- Collaborated on the architecture and implementation of a multi-tenant Cloudera data platform on AWS using automated orchestration pipelines to dynamically provision on-demand Hadoop clusters.
- Modernized data applications driving the migration of containerized workloads from on-premises Kubernetes to AWS EKS and ECS, significantly improving platform scalability and operational resilience.
- Automated infrastructure provisioning using Infrastructure-as-Code (IaC) principles by developing modular Terraform configurations to manage AWS resources across multiple environments.
- Implemented DevOps practices by engineering Jenkins CICD pipelines to automate builds, tests, security scans and deployments to achieve a reduction in developer toil.
- Collaborated with other engineering teams across geographical time zones using Agile methodology to plan and deliver projects.
 | Deloitte Manager 2018 June - 2022 February (3 years 9 months) |
Software engineering manager at a consulting firm responsible for delivering IAM cyber security projects for the banking sector.
Key achievements:
- Architected and led a team of 6 engineers to deliver a global workforce IAM platform for a bank, successfully serving the entire organization across multiple geographic regions.
- Directed the development and delivery of native iOS and Android mobile applications supporting advanced Multi-Factor Authentication (MFA), including Push Authentication and TOTP.
- Accelerated enterprise integration by onboarding 100+ applications within a single year utilizing OIDC, OAuth2 and SAML authentication protocols.
- Designed and conducted technical trainings to develop IAM expertise which accelerated onboarding of engineers across various experience levels.
- Bridge cross regional engineering teams by fostering a culture of collaboration and knowledge sharing.
 | CrimsonLogic Senior Security Engineer 2015 June - 2018 June (3 years 1 month) |
Developed and maintained a national-scale Public Key Infrastructure (PKI) platform, enabling the modernization of e-government services across public sector agencies.
 | ST Electronics (Info-Software) Software Engineer 2009 July - 2018 May (5 years 11 months) |
Developed and maintained mission-critical software solutions for public sector agencies, focusing on system stability and high-availability standards.
Education
 | Bachelor’s in Computer Science National University of Singapore (NUS) June 2009 |
 | Diploma in Information Technology Temasek Polytechnic August 2004 |
Projects
 | Home Assistant (Open Source) May 2025 - Present |
Current code owner and active contributor of the Home Assistant (HA) Telegram bot integration , the most popular HA notification service used in over 21k active installations.
Home Assistant is an open source home automation platform that functions as a central hub for controlling smart home devices and integrating with various services.
The Telegram bot integration is used for sending and receiving messages from a Telegram bot account. This enables users to receive notifications and control their smart home via Telegram.
Certifications
| 2025 Dec | Cloud |  | Oracle Cloud Infrastructure 2025 Cloud Observability Professional |
| 2025 Dec | Cloud | | Oracle Cloud Infrastructure 2025 Cloud Operations Professional |
| 2025 Jul | Cloud | | Oracle Cloud Infrastructure 2025 Architect Associate |
| 2025 Apr | TOGAF |  | TOGAF Enterprise Architecture Practitioner |
| 2025 Mar | Cloud |  | AWS Certified Security Specialty |
| 2025 Mar | Cloud | | AWS Certified Solutions Architect Professional |
| 2025 Mar | Cloud | | AWS Certified DevOps Engineer Professional |
| 2022 Jun | Cloud |  | CKA: Certified Kubernetes Administrator |
| 2022 Apr | Cloud | | CKAD: Certified Kubernetes Application Developer |
| 2022 Sep | Cloud |  | HashiCorp Certified: Terraform Associate |
| 2020 Aug | IAM |  | ForgeRock Accredited Consultant |
| 2021 Mar | IAM | | Okta Certified Professional |
| 2014 Sep | ITIL |  | ITIL Intermediate Operational Support and Analysis |
Awards
 | Hacktoberfest Super Contributor DigitalOcean Oct 2025 |
Hacktoberfest is an annual event that encourages everyone to contribute to participating open-source projects on GitHub.