Senior Infrastructure Engineer

PLT Engineering; Selangor; On-site; MYR 180,000 - 320,000; Full time

Job summary

Grab in Petaling Jaya seeks a Senior Infrastructure Engineer to own platform initiatives end-to-end. You will design and run infrastructure, mentor engineers, and collaborate with security, SRE, and product teams.

This role emphasizes building platforms, not just pipelines, and involves writing code for APIs, services, and automation with tests and reviews.

Qualifications

• Experience designing and operating large Kubernetes environments (Kubernetes at scale).
• Strong hands-on experience with AWS and infrastructure as code (Terraform).
• Proficiency in Go or Python for internal tooling and automation.
• Proven track record in CI/CD ownership and platform reliability.
• Mentorship and ability to drive best-practice across teams.

Responsibilities

• Own and evolve platform infrastructure end-to-end for scalable CI workloads.
• Design architectures, implement automation, and enforce security guardrails.
• Lead and mentor junior engineers, setting standards and reviews.
• Collaborate with security, SRE, and product teams to deliver platform solutions.
• Build internal services and tooling, with tests and code reviews.

Skills

Kubernetes

AWS

Terraform

Go or Python

CI/CD

Linux admin

Security and reliability

Mentoring

Product mindset

Tools

GitLab CI

EKS

Terraform

Job description

Get to Know the Team

Join the DevTools team at Grab. We build the developer platform for one of the largest cloud deployments in the region: CI/CD, runner infrastructure, source control, cloud automation, and the internal platforms that run AI coding agents at scale. Our mission is simple: make it fast, safe, and boring for thousands of Grab engineers to ship code.

Get to Know the Role

We are looking for a Senior Infrastructure Engineer to own platform engineering initiatives end to end. You will report to the Engineering Manager and work onsite in Petaling Jaya. You will design and run infrastructure independently, shape architecture, mentor engineers, and work directly with security, SRE, and product engineering teams.

This is an infrastructure role first. But we build platforms, not just pipelines, so you will write code: APIs, services, controllers, CLIs, and automation that other engineers depend on, with tests and code review to match.

The Critical Tasks You Will Perform

• Kubernetes at scale. Operate and evolve large EKS clusters running CI workloads, **ephemeral build and agent environments**, and internal tools, including autoscaling, node lifecycle, networking, multi-tenancy, and cost.
• AWS and Infrastructure as Code. Design and run production systems on AWS. Advanced Terraform, including reusable modules across large multi-account estates.
• CI/CD ownership. Architect and maintain GitLab CI and self-hosted runners for fast, reliable, and secure delivery.
• Cloud automation. Automate account lifecycle, IAM, secrets, monitoring and logging, and policy guardrails.
• AI agent infrastructure. Build and scale the platform that runs AI coding agents in isolated, **ephemeral environments**: sandboxing, resource limits, observability, access control.
• Coding. Build internal services, APIs, and tooling in Go or Python, with tests and code review.
• Linux fundamentals. Strong systems administration, performance troubleshooting, and container internals.
• Security and reliability. Partner with security and SRE to embed guardrails into the platform.
• Lead and mentor. Drive technical reviews, set standards, coach junior engineers.
• Product mindset and stakeholders. Translate requirements from product, security, and infra teams into shipped solutions. Focus on developer experience, adoption, and measurable impact. Communicate trade-offs clearly to technical and non-technical audiences.