Senior DevOps Engineer (L3)

NTT SINGAPORE PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

NTT Singapore Pte. Ltd. is seeking an experienced Full Stack DevOps Engineer (L3) to design, build and improve automated software and infrastructure delivery in AWS. You will own CI/CD with GitLab, IaC, deployment automation and security controls across pipelines.

The role requires 6+ years in DevOps with hands-on AWS deployment experience and advanced scripting. Expect collaboration across development, operations and security teams to ensure reliable, auditable delivery processes.

Qualifications

• Bachelor's degree or equivalent in IT/Computing or related field.
• AWS DevOps experience and professional certification preferred.
• Hands-on with GitLab CI/CD, IaC and scripting.

Responsibilities

• Designs, builds and maintains GitLab CI/CD pipelines for apps and infra.
• Develops IaC components to support AWS deployments.
• Automates deployment activities across build, test and release stages.
• Investigates pipeline failures and implements fixes and controls.
• Integrates SAST/DAST/SCA into delivery pipelines and governs security checks.
• Documents pipeline architecture and troubleshooting knowledge.
• Coaches engineers on automation patterns and best practices.

Skills

GitLab CI/CD

IaC

AWS deployment

Scripting

Security controls

CI/CD pipelines

Education

Bachelor's in IT/Computing

AWS DevOps Professional

Tools

Git

Terraform

Job description

The Full Stack DevOps Engineer (L3) is an advanced engineering role responsible for designing, building, supporting and improving automated software and infrastructure delivery capabilities in AWS environments. The primary objective of this role is to provide reliable CI/CD, infrastructure as code (IaC) and deployment automation while resolving complex pipeline, configuration and release issues without breaching agreed service requirements. The Full StackDevOps Engineer (L3) focuses on GitLab CI/CD, IaC, Git, deployment automation, pipeline troubleshooting, configuration and release management, scripting, and integration of SAST, DAST, SCA and other security controls into delivery pipelines. AWS deployment experience is required. This role may also contribute to or support project work as and when required.

Key Responsibilities:

• Designs, builds, maintains and improves GitLab CI/CD pipelines for application and infrastructure delivery.
• Develops and maintains IaC components to support repeatable and controlled AWS deployments.
• Uses Git-based workflows to manage source code, pipeline definitions, IaC and deployment artefacts.
• Automates deployment activities and reduces manual effort across build, test, release and operational processes.
• Investigates and resolves complex pipeline failures, integration issues and deployment errors.
• Supports configuration and release management, including version control, release coordination and deployment validation.
• Develops and maintains scripts and integrations required for delivery automation.
• Integrates SAST, DAST, SCA and security controls into CI/CD pipelines and supports remediation workflows for identified findings.
• Implements appropriate pipeline controls, approvals, logging and traceability for deployment activities.
• Performs AWS deployments and troubleshoots issues across automated deployment workflows.
• Documents pipeline architecture, deployment procedures, configuration dependencies and troubleshooting knowledge.
• Coaches other engineers and shares reusable automation patterns and technical knowledge.
• Contributes to continuous improvement, standardisation and automation of delivery processes.
• Performs any other related task as required.

Knowledge and Attributes:

• Deep technical skills in DevOps, CI/CD, IaC and AWS deployment automation.
• Strong troubleshooting and analytical skills across pipeline, scripting, integration and deployment layers.
• Ability to work independently on complex engineering tasks and provide clear technical direction.
• Ability to communicate and work across development, operations and security teams.
• Strong focus on repeatability, controlled change, traceability and operational reliability.
• Ability to work well in a pressurized environment and manage competing delivery priorities.
• Ability to document and transfer knowledge to other engineers.
• Excellent client service orientation and commitment to agreed delivery outcomes.

Academic Qualifications and Certifications:

• Bachelor's degree or equivalent qualification in IT/Computing (or demonstrated equivalent work experience).
• Certifications relevant to the services provided carry additional weightage on a candidate's qualification for the role.

Required certification(s):

• AWS Certified DevOps Engineer -Professional.

Good-to-have certification(s):

• HashiCorp Terraform Associate.
• GitLab Certified CI/CDAssociate.
• AWS Developer or AWS SysOps certification.

Required Experience:

• 6+ years of overall relevant experience.
• 5+ years of experience in DevOps, IaC, CI/CD and AWS deployment automation.
• Hands-on experience with GitLab CI/CD, IaC, Git, deployment automation, pipeline troubleshooting, configuration/release management and scripting.
• Experience integrating SAST, DAST, SCA and security controls into pipelines.
• Hands-on AWS deployment experience.