Production scale
Supported infrastructure serving 4M–10M daily concurrent users and 6,000+ VMs in live production environments.
Senior DevOps / SRE
Secure, reliable infrastructure for cloud platforms, custody systems, and high-stakes production operations.
I’m Penghian Ang, a Senior Cold Storage Engineer at Coinbase with 7+ years across DevOps, SRE, and blockchain infrastructure. I build systems that stay calm under operational pressure, from institutional custody workflows to large-scale game infrastructure and validator fleets.
Automation and reliability
Built automation for restoration workflows, alerting, deployments, and validator operations to reduce human error and accelerate response.
High-stakes systems
Own work spanning institutional custody, staking infrastructure, incident response, security hardening, and observability.
Selected Impact
Fast proof that the work translates to senior infrastructure roles.
6,000+ VMs
Owned live infrastructure at scale
Served as a production point-of-contact for PUBG Mobile infrastructure across a large VM estate.
4M–10M
Supported massive daily concurrency
Worked on reliability for environments used by millions of daily concurrent players.
26+ metrics
Improved validator observability
Built a custom exporter and dashboards to make Solana validator health measurable and actionable.
600+ → 140
Reduced alert noise
Reclassified noisy monitoring rules into a smaller set of actionable alerts for operators.
Experience
Recent roles with the strongest signal for senior DevOps and SRE hiring.
Focused on reliability, automation, infrastructure hardening, and blockchain operations.
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 with internal tooling and Datadog, reducing operational risk while supporting clients through sensitive transaction issues.
Site Reliability Engineer
Valigator
Jun 2025 – Oct 2025
- Built Solana staking infrastructure with Ansible automation to provision and operate validator fleets more consistently.
- Developed a custom Solana exporter with 26+ validator metrics and Grafana dashboards to tighten observability for operators.
Senior Infrastructure Support Engineer
Thoughtworks
Jun 2024 – Sep 2025
- Led an enterprise AWS infrastructure build for SNTC.org.sg using Terraform and CI/CD pipelines.
- Managed deployments, monitoring, and security hardening for client-facing production systems.
Senior Blockchain Security DevOps Engineer
Crypto.com
Dec 2023 – Dec 2024
- Built secure infrastructure to monitor and protect blockchain systems across multiple protocols and environments.
- Standardized validator and RPC deployments by consolidating Cosmos-family playbooks into a reusable modular template.
DevOps Engineer
Tencent
May 2022 – Dec 2023
- Served as a production point-of-contact for PUBG Mobile infrastructure supporting 6,000+ VMs and 4M–10M daily concurrent users.
- Reduced alert noise from 600+ to 140 actionable alerts and built alert automation later used as a reference by Tencent Overseas Games.
Earlier Experience
- UP DevLabs — DevOps Engineer (Oct 2021 – May 2022): Managed full lifecycle environments across AWS, Aliyun, and Tencent Cloud, and introduced ELK self-service log search.
- Kenrich Partners — System Analyst (Jul 2021 – Oct 2021): Responded to phishing and compliance incidents, then helped migrate on-prem infrastructure to Azure.
- GovTech — SNOC Engineer (Nov 2020 – Jul 2021): Supported uptime for critical government systems with AWS CloudWatch, Grafana, Splunk, and SolarWinds.
- Netpluz Asia — NOC Engineer (Feb 2020 – Nov 2020): Provisioned and troubleshot circuits and built Python tools that reduced manual reporting by 80%.
Projects
Three projects that show how I approach infrastructure, automation, and observability.
- Problem
- Validator provisioning and upgrades were operationally fragile and too dependent on manual setup.
- Solution
- Built an Ansible-driven workflow that takes Solana validator fleets from bare Linux to hardened production-ready nodes.
- Result
- Created a reusable operating model for repeatable deployments, safer upgrades, and stronger baseline security.
Ansible · Solana · Linux · Security Hardening
- Problem
- Validator binary delivery needed stronger reproducibility and trust guarantees across releases.
- Solution
- Implemented a CI/CD pipeline with hermetic Docker builds and checksum verification for Solana validator binaries.
- Result
- Made release validation more repeatable and easier for operators to verify before rollout.
Docker · CI/CD · Solana · GitHub Actions
- Problem
- Validator operators lacked clean, actionable visibility into node health and protocol-specific metrics.
- Solution
- Built a FastAPI exporter that publishes 26+ Prometheus metrics and pairs them with a focused Grafana dashboard.
- Result
- Turned raw validator state into a monitoring surface that is easier to operate and troubleshoot.
FastAPI · Prometheus · Grafana · Python
This resume site is also an infrastructure project: static hosting on AWS S3, Terraform IaC, and Jenkins CI/CD. Source Write-up
Skills
Capabilities I use most often in production infrastructure work.
Infrastructure
Cloud
Observability
Automation
Blockchain
Certifications
Validated across cloud, Kubernetes, infrastructure as code, and security.
Amazon Web Services
- AWS Solutions Architect – Associate
- AWS Cloud Practitioner
Kubernetes & IaC
- Certified Kubernetes Administrator
- HashiCorp Terraform Associate
Microsoft
- Azure Fundamentals
Tencent Cloud
- Solutions Architect Associate
- SysOps Associate
- Cloud Practitioner
Security
- Sophos Certified Engineer
Career Timeline
Optional interactive walkthrough of the same career story.
This runner is secondary to the resume content above, but it is still a quick way to explore milestones and the tools collected along the way.
2020
NOC Engineer
Netpluz
2020
SNOC Engineer
GovTech
2021
System Analyst
Kenrich
2021
DevOps
UP DevLabs
2022
DevOps
Tencent
2023
Sr DevOps
Crypto.com
2024
Sr Infra
Thoughtworks
2025
SRE
Valigator
2025
Sr Engineer
Coinbase
Press Space or tap to start — collect milestones and skills.
Contact
Let’s talk about reliability, infrastructure, and roles where production quality matters.
Reach out for senior DevOps/SRE roles, platform and infrastructure discussions, or work involving blockchain operations and secure systems.
Email
penghian@gmail.com
Best for role discussions and direct outreach.
LinkedIn
linkedin.com/in/angpenghian
Best for hiring conversations and profile review.
Phone
+65 9739 3952
Available for direct coordination when needed.
GitHub
github.com/angpenghian
Open-source projects and infrastructure tooling.
Credly
Verified badges
Certification history across cloud and security.
LeetCode
leetcode.com/angpenghian
Additional technical practice and problem-solving signal.