Penghian Ang — Senior Cold Storage Engineer | DevOps & Blockchain Infrastructure

About

Senior Cold Storage Engineer at Coinbase owning reliability and security operations for institutional-grade cold storage and staking infrastructure. 5+ years building secure, scalable systems across DevOps, blockchain, and cloud platforms.

Previously built infrastructure at Crypto.com, managed production systems supporting 10M+ daily users at Tencent (PUBG Mobile), and monitored critical government systems at GovTech Singapore.

Resume GitHub

Blockchain Ops

Solana TON Conflux Oasis Fetch.ai NEO3 Neutron ZetaChain Vara Celestia

Cloud & Infrastructure

AWS GCP Azure Terraform Ansible Docker Kubernetes Helm

CI/CD & Monitoring

Jenkins GitHub Actions Grafana Prometheus Datadog ELK Splunk

Languages & Tools

Python Bash FastAPI Flask Grafana k6 Selenium

Experience

Senior Cold Storage Engineer Coinbase Jan 2025 – Present

Own reliability and security operations for institutional-grade cold storage and staking infrastructure under Coinbase Prime/Custody
Automated cold-to-hot wallet restoration workflows using internal tooling and Datadog, reducing operational error risk
Provide white-glove support to institutional clients troubleshooting staking, cryptographic, and transaction issues

Site Reliability Engineer Valigator Jun 2025 – Oct 2025

Built Solana staking infrastructure with Ansible automation for validator fleet provisioning and operations
Developed a custom Solana Node Exporter (FastAPI + Prometheus) exposing 26+ validator metrics with Grafana dashboards

Senior Infrastructure Support Engineer Thoughtworks Jun 2024 – Sep 2025

Led enterprise cloud infrastructure build for SNTC.org.sg on AWS with Terraform IaC and CI/CD pipelines
Managed production deployments, monitoring, and security hardening for client-facing applications

Senior Blockchain Security DevOps Engineer Crypto.com Dec 2023 – Dec 2024

Built secure, scalable infrastructure to monitor and defend blockchain systems across multiple protocols
Owned validator/RPC node operations across TON, Conflux, Oasis, Fetch.ai, NEO3, Neutron, ZetaChain, and Vara
Standardized Cosmos-family deployments by consolidating multiple Ansible playbooks into one modular template

DevOps Engineer Tencent May 2022 – Dec 2023

Primary point-of-contact for PUBG Mobile production infrastructure supporting 6,000+ VMs and 4M–10M daily concurrent users
Reduced alert noise from 600+ to 140 actionable alerts by reclassifying monitoring rules
Built a FastAPI-based alert automation system; adopted as best-practice reference by Tencent Overseas Games

DevOps Engineer UP DevLabs Oct 2021 – May 2022

Managed full lifecycle environments across AWS, Aliyun, and Tencent Cloud
Implemented ELK Stack for developer self-service log search, reducing ops support dependency

System Analyst Kenrich Partners Jul 2021 – Oct 2021

Responded to a phishing incident on Day 1, coordinating with legal counsel and performing root cause analysis
Led MAS TRM compliance initiatives and migrated on-prem infrastructure to Azure Cloud

SNOC Engineer GovTech Nov 2020 – Jul 2021

Monitored and maintained uptime for critical government systems using AWS CloudWatch, Grafana, Splunk, and SolarWinds
Supported real-time incident triage, root cause analysis, and cyber threat detection

NOC Engineer Netpluz Asia Feb 2020 – Nov 2020

Provisioned and troubleshot circuits (Baccess, GPON, MetroE) and configured Cisco/Sophos devices
Built Python automation tools: service report generator (reduced manual reporting by 80%) and Cisco router config generator

Projects

Open-source tools and infrastructure I've built

solana-ansible-kit

Production-grade Ansible automation provisioning Solana validator fleets from bare Linux to production with security hardening, performance tuning, and zero-downtime upgrades.

Ansible Solana Linux Security

GitHub

solana-repro-builds

Automated CI/CD pipeline publishing reproducible Solana validator binaries with hermetic Docker builds, automated release detection, and checksum verification.

Docker CI/CD Solana GitHub Actions

GitHub

solana-exporter

Production-grade Prometheus exporter (FastAPI) for Solana validator observability, exposing 26+ metrics with a 21-panel Grafana dashboard.

FastAPI Prometheus Grafana Python

GitHub

Resume Website

This site — DevOps resume website deployed on AWS S3 with Terraform IaC, Jenkins CI/CD pipeline, and three infrastructure variations (S3, EC2, EKS).

AWS Terraform Jenkins K8s

GitHub Write-up

About

Experience

Projects

solana-ansible-kit

solana-repro-builds

solana-exporter

Resume Website

Certifications

Get in Touch