Senior DevOps & Elastic Stack Engineer (Hands-on)

PURVIEW; Singapore; On-site; SGD 120,000 - 150,000; Full time

Job summary

A leading tech company in Singapore is seeking a deeply technical, hands-on Senior DevOps & Elastic Stack Engineer to rebuild and optimize infrastructure in a Defence environment. This role involves writing Ansible, designing CI/CD pipelines on GitLab, and deep engineering of the Elastic Stack. Candidates should have 9-12 years of experience, expert-level skills in Ansible and GitLab, and a strong background in secure environments. This position emphasizes hands-on technical work, without management responsibilities.

Qualifications

• 9-12 years' relevant experience in a technical role.
• Proven ability to build and tune Logstash ingestion pipelines end-to-end.
• Experience engineering automation in secure or regulated environments.

Responsibilities

• Write advanced Ansible playbooks, roles, modules, filters, and dynamic inventories.
• Architect and build complete CI/CD pipelines on GitLab Enterprise.
• Build and tune high-throughput Logstash ingestion pipelines.
• Investigate and resolve pipeline failures and deployment issues.
• Apply hardening standards in pipelines and configurations.

Skills

Expert-level Ansible

Advanced GitLab Enterprise CI/CD

Deep hands-on Elastic Stack experience

Strong Linux (RHEL) skills

Networking skills

Shell scripting skills

Troubleshooting skills

Tools

Ansible

GitLab

Elastic Stack

Terraform

Job description

Role Type: 100% Hands-On Engineering (No Management)

Job Scope

We are seeking a deeply technical, hands-on Senior DevOps & Elastic Stack Engineer with the expertise to design, rebuild, optimise, and troubleshoot complex infrastructure inside a secure Defence environment.

This is not a coordination, oversight, or team-lead role.

This is a do-it-yourself engineering position -writing Ansible, building GitLab pipelines, designing Logstash flows, tuning Elasticsearch clusters, and fixing broken infra with your own hands.

If you are not someone who thrives on deep troubleshooting, architecture-through-implementation, and technical craftsmanship, this role will not be a good fit.

Job Responsibilities

1. Ansible Automation – Architect, Build & Optimise

• Write advanced Ansible playbooks, roles, modules, filters, and dynamic inventories.
• Refactor legacy automation, remove technical debt, and implement best practices.
• Implement CI linting, automated testing, and fully automated provisioning workflows.

2. GitLab Enterprise CI/CD – End-to-End Pipeline Engineering

• Architect and build complete CI/CD pipelines—including infra automation—on GitLab Enterprise.
• Configure runners, caching, secrets, governance, SSH keys, and access controls.
• Rewrite outdated pipelines into robust, modularised stages and jobs.
• Integrate security scans, IaC validation, and environment automation.

3. Elastic Stack Engineering – Ingestion, Performance & Visualisation

• Build and tune high-throughput Logstash ingestion pipelines.
• Optimise Elasticsearch clusters (shards, ILM, retention, snapshots, indices).
• Develop dashboards, alerts, and monitoring using Kibana.
• Diagnose and resolve ingestion bottlenecks and cluster performance issues.

4. Infrastructure Engineering & Troubleshooting

• Deep Linux (RHEL) engineering across services, networking, systemd, and logging.
• Investigate and resolve pipeline failures, deployment issues, and log-routing problems.
• Implement robust monitoring, telemetry, and automated self-recovery mechanisms.
• Operate with an SRE mindset—reduce MTTR, increase system resilience, automate relentlessly.

5. Defence-Grade Security Engineering

• Apply hardening standards directly in pipelines, configurations, and infra definitions.
• Manage secrets, RBAC, privileged access, and audit logging across CI/CD and Elastic.
• Build compliant, fully traceable infrastructure pipelines aligned with Defence controls.

Must-Have Expertise

• Relevant 9-12 years’ experience
• Expert-level Ansible (custom modules, complex inventories, reusable roles).
• Advanced GitLab Enterprise CI/CD—can architect and build pipelines independently.
• Deep hands-on Elastic Stack experience (Elasticsearch, Logstash, Kibana).
• Proven ability to build & tune Logstash ingestion pipelines end-to-end.
• Strong Linux (RHEL), networking, shell scripting, and troubleshooting skills.
• Experience engineering automation in secure / regulated environments.
• Ability to operate independently, take ownership, and deliver complex technical rebuilds.

Who Will Thrive

• Someone who can open Vim/VSCode and start fixing things immediately.
• Someone who enjoys rewriting and improving automation the right way.
• Someone highly technical—not managerial—who loves building.
• Someone comfortable working in restricted, high-security Defence environments.

Preferred (Not Mandatory)

• Terraform or other IaC tools
• Kubernetes / container-based logging pipelines
• SRE observability frameworks
• Prior Defence or GovTech experience

Why This Role Matters

You will rebuild the automation backbone for a major Defence portfolio.

Your work will transform fragmented systems into a stable, predictable, automated infrastructure foundation.

This is a high-impact role for an engineer who wants to get their hands dirty and build something that truly matters.