Kubernetes & Site Reliability Engineer (SRE)

OPENSOURCE TECHNOLOGIES PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

OPENSOURCE TECHNOLOGIES PTE. LTD. in Singapore seeks experienced Kubernetes and Site Reliability Engineers to support highly scalable production platforms for a global technology customer.

You will work on Kubernetes administration, incident management, automation, and observability to ensure reliability and performance. Responsibilities include operating large-scale clusters, capacity planning, and collaborating with cross-functional teams.

Qualifications

• Strong hands-on experience with Kubernetes administration and troubleshooting.
• Solid Linux systems administration and troubleshooting skills.
• Good understanding of networking concepts (DNS, TCP/IP, load balancing, service connectivity).
• Site Reliability Engineering principles and incident management experience.
• Hands-on scripting/automation using Python or Bash/Shell.
• Experience with monitoring/observability tools: Prometheus, Grafana, Splunk, ELK/OpenSearch, Datadog.
• Helm or similar Kubernetes packaging tools; GitOps with Argo CD/Flux.
• Knowledge of service mesh concepts and container security practices.
• Experience with cloud or private-cloud infrastructure and distributed systems.

Responsibilities

• Operate, maintain and troubleshoot large-scale Kubernetes-based production environments.
• Ensure reliability, scalability, availability and performance of critical services.
• Investigate complex production issues and perform root-cause analysis.
• Participate in incident response and drive permanent corrective actions.
• Automate repetitive operational activities and improve platform reliability.
• Build and improve monitoring, alerting, logging and observability frameworks.
• Define and track SLIs, SLOs and operational reliability metrics.
• Support Kubernetes upgrades, configuration changes and platform improvements.
• Collaborate with engineering, infrastructure, platform, security and DevOps teams.
• Perform capacity planning and performance tuning for reliability improvements.
• Develop and maintain runbooks, automation scripts and troubleshooting docs.
• Participate in production readiness reviews and ensure apps meet operational standards.

Skills

Kubernetes administration

Kubernetes architecture

Pods

Deployments

StatefulSets

Services

Ingress

ConfigMaps/Secrets

RBAC

Storage

Networking

Linux administration

DNS/TCP/IP

Site Reliability Engineering

Incident management

RCA analysis

Python scripting

Bash scripting

Prometheus

Grafana

Splunk

ELK/OpenSearch

Datadog

Helm

GitOps - Argo CD/Flux

Service mesh concepts

Cloud/private-cloud infra

Distributed systems

Capacity management

Global distributed teams

Tools

Prometheus

Grafana

Splunk

ELK/OpenSearch

Datadog

Argo CD

Flux

Helm

Kubernetes security tools

Job description

Role Overview

• We are looking for experienced Kubernetes & Site Reliability Engineers to support highly scalable, business-critical production platforms for a global technology customer in Singapore.
• The role requires strong hands-on expertise in Kubernetes, Linux, production reliability, automation, observability, incident management and troubleshooting of distributed systems

• Candidates should be comfortable operating large-scale production environments where availability, performance, automation and operational excellence are critical.

Key Responsibilities

• Operate, maintain and troubleshoot large-scale Kubernetes-based production environments
• Ensure reliability, scalability, availability and performance of critical services.
• Investigate complex production issues and perform detailed root-cause analysis.
• Participate in incident response and drive permanent corrective actions.
• Automate repetitive operational activities and improve platform reliability.
• Build and improve monitoring, alerting, logging and observability frameworks.
• Define and track SLIs, SLOs and operational reliability metrics
• Support Kubernetes upgrades, configuration changes, patching and platform improvements.
• Work closely with application engineering, infrastructure, platform, security and DevOps teams.
• Perform capacity planning, performance tuning and reliability improvements.
• Develop and maintain operational runbooks, automation scripts and troubleshooting documentation.
• Participate in production readiness reviews and ensure applications meet operational standards.

Mandatory Skills

• Strong hands-on experience with
• Kubernetes administration and troubleshooting
• Strong understanding of Kubernetes architecture, including:
• Pods
• Deployments
• StatefulSets
• Services
• Ingress
• ConfigMaps / Secrets
• RBAC
• Storage
• Networking
• Strong
• Linux systems administration and troubleshooting skills.

• Good understanding of networking concepts such as DNS, TCP/IP, load balancing and service connectivity.
• Strong understanding of
• Site Reliability Engineering principles

• Experience supporting large-scale, high-availability production systems.
• Strong incident management and RCA experience.
• Hands-on scripting/automation experience using
• Python, Bash/Shell or similar

• Experience with monitoring and observability tools such as
• Prometheus, Grafana, Splunk, ELK/OpenSearch, Datadog or equivalent

• Helm or similar Kubernetes package/deployment management tools.
• GitOps experience using tools such as Argo CD or Flux.
• Knowledge of service mesh concepts.
• Experience with container security and Kubernetes security practices.
• Experience with cloud or private-cloud infrastructure.
• Familiarity with distributed systems and microservices architectures.
• Exposure to performance engineering and capacity management.
• Experience working in globally distributed engineering environments.