Senior Site Reliability Engineer

Momcozy; Singapore; On-site; SGD 140,000 - 210,000; Full time

Benefits offered by this job

Competitive compensation

Multinational exposure

Job summary

Momcozy in Singapore is seeking a Senior Global SRE / Infrastructure Engineer to design, operate, and scale reliable infra across AWS and multiple regions. You will own production reliability, work with cross-region teams, and drive observability, automation, and CI/CD.

Responsibilities include managing Kubernetes clusters, Terraform, and GitLab/Jenkins/Argo CD; defining SLI/SLO/SLA; incident response; and implementing security controls.

Job description

We are looking for a Senior Global SRE / Infrastructure Engineer to help build, operate, and improve reliable infrastructure across multiple geographic regions. This role serves as a key technical owner for infrastructure supporting our international business, with a strong focus on AWS, Kubernetes, Linux, networking, observability, automation, CI/CD, and production reliability. You will independently troubleshoot complex production issues, support regional infrastructure, participate in global architecture initiatives, and continuously improve the reliability, automation, and operational efficiency of our infrastructure.

Who You'll Work With

• Reports to: Head of Operations & Security (China HQ)
• Collaborates with: SRE, DBA, DevOps, network, security, and development teams across regions; acts as a technical bridge between overseas offices and the central infrastructure organization
• Team context: Senior hands-on role; participates in global architecture reviews and infrastructure projects; cross-time-zone collaboration

Responsibilities

• Operate and maintain production infrastructure across AWS and multiple geographic regions, ensuring availability, reliability, performance, and scalability
• Design, deploy, and operate AWS infrastructure including EC2, VPC, ELB, S3, RDS, CloudWatch, IAM, and related services; support multi-region AWS infrastructure and cloud migration projects
• Operate and maintain Kubernetes production clusters; manage Docker/containerized workloads and Kubernetes resources; troubleshoot pod, node, networking, storage, and resource-related issues
• Define and improve SLI, SLO, and SLA for critical services; build and maintain monitoring, alerting, and observability systems using Prometheus, Grafana, CloudWatch, ELK, or comparable tools
• Participate in production incident response and on-call rotations; lead incident troubleshooting and root cause analysis; develop preventive measures for recurring incidents
• Troubleshoot LAN/WAN, VPN, DNS, routing, firewall, and Internet connectivity issues; support connectivity between global offices, cloud environments, and business systems
• Maintain and improve CI/CD platforms and deployment pipelines using GitLab, Jenkins, Argo CD, or similar technologies; automate infrastructure provisioning, deployment, monitoring, and operational tasks
• Implement infrastructure security best practices; support IAM, security groups, network segmentation, encryption, and access control; ensure infrastructure complies with company security and global data protection requirements
• Act as the technical infrastructure owner for the local overseas office; support office network, Wi-Fi, VPN, and IT infrastructure; coordinate with local ISPs, cloud providers, and IT vendors
• Communicate technical issues and solutions clearly; maintain infrastructure documentation, SOPs, and architecture diagrams; participate in global architecture reviews

Requirements

Must-Have

• Bachelor's degree or above in Computer Science, Information Technology, Networking, or a related field, or equivalent industry experience
• 5+ years of experience in SRE, DevOps, cloud infrastructure, or systems engineering
• Strong hands-on experience with AWS cloud infrastructure
• Strong Linux administration and troubleshooting skills
• Hands-on experience with Kubernetes and Docker
• Solid understanding of TCP/IP, DNS, DHCP, VLAN, routing, VPN, load balancing, and network troubleshooting
• Experience with infrastructure as code, preferably Terraform
• Experience with CI/CD tools such as GitLab CI, Jenkins, Argo CD, or similar platforms
• Experience with monitoring and observability tools such as Prometheus, Grafana, CloudWatch, or ELK
• Strong scripting or programming skills using Python, Bash, or similar languages
• Experience handling production incidents and performing root cause analysis
• Strong understanding of high availability, scalability, and disaster recovery
• Willingness to participate in an on-call rotation for critical production services
• Legally authorized to work in Singapore; this role does not provide visa sponsorship

Nice-to-Have

• AWS certifications such as Solutions Architect, DevOps Engineer, or SysOps Administrator
• Experience with AWS multi-region architecture
• Experience with GitOps and Argo CD
• Experience with Kafka, Redis, Elasticsearch, or other distributed systems
• Experience with CDN, WAF, DNS, and global traffic management
• Experience supporting international e-commerce, IoT, mobile, or SaaS businesses
• Experience working in multinational or cross-border organizations

Language

• Professional working proficiency in English (CEFR B2 or above)
• Mandarin Chinese is highly advantageous for collaboration with China HQ, but not required

What We Offer

• Opportunity to own regional infrastructure for a global business
• Senior technical scope with influence on global architecture decisions
• Exposure to multi-region AWS and Kubernetes environments
• Competitive compensation and benefits package