Lead Site Reliability & Security

dinCloud Pakistan, An ATSG Company; Islamabad; On-site; PKR 4,000,000 - 6,000,000; Full time

Job summary

XTIUM in Islamabad is seeking an experienced Site Reliability Engineer/DevOps to own infrastructure, security, and automation across Linux, Windows, and cloud-native environments.

You will implement IaC with Terraform, manage GitHub Enterprise and GitHub Actions, build secure Docker images, orchestrate Kubernetes clusters, monitor health with Prometheus/Grafana, and lead blameless incident reviews.

Qualifications

• 8+ years in SRE, DevOps, or Systems Engineering roles.
• Experience with Terraform or other IaC tools.
• Familiarity with service mesh (Istio/Linkerd) and CNI plugins (Calico/Cilium).
• Understanding of zero-trust networking and SSO integrations.
• Certifications: RHCE, CKA, or CISSP are a plus.

Responsibilities

• Manage OS and infrastructure across Linux and Windows environments.
• Implement security, patching, and compliance measures.
• Develop automation with Ansible/Python/Shell to reduce toil.
• Configure and maintain Apache/Nginx web servers and SSL setups.
• Deploy and manage Kubernetes clusters; build secure containers.
• Monitor systems with Prometheus, Grafana, or ELK; participate in incidents.

Skills

SRE/DevOps

Terraform

Istio/Linkerd

Zero-trust networking

SSO integrations

Tools

GitHub Enterprise

GitHub Actions

AWX/Tower

Docker

Kubernetes

Job description

Job Description

1. Infrastructure & OS Management

• Perform kernel patching, security updates, and system hardening following industry best practices.
• Troubleshoot and debug complex OS-level issues (performance, memory, I/O, kernel panics).
• Manage and support Windows Server environments where applicable.

2. Security & Compliance

• Perform regular security scanning and vulnerability assessments using tools like Nessus, Qualys, or OpenVAS.
• Conduct code security scans (SAST/DAST) and integrate them into CI/CD pipelines.
• Configure and maintain LDAP authentication for centralized access management.
• Ensure all systems comply with internal security policies and external regulatory standards.
• Implement and manage WAF (Web Application Firewall) configurations to protect against OWASP Top 10 threats.

3. Automation & Configuration Management

• Write and maintain Ansible playbooks for automated provisioning, patching, and configuration management.
• Manage GitHub Enterprise repositories, branching strategies, and CI/CD workflows (GitHub Actions preferred).
• Develop automation scripts using Python, Shell, or Go to reduce toil and improve operational efficiency.

4. Application & Web Server Management

• Configure and maintain Apache and Nginx web servers, including performance tuning and reverse proxy setup.
• Troubleshoot web server logs, SSL/TLS issues, and load balancing configurations.

5. Container Orchestration & Cloud-Native Technologies

• Deploy, manage, and scale applications on Kubernetes clusters (EKS, AKS, or on-prem).
• Build and maintain Docker images with secure base layers and minimal attack surfaces.
• Monitor cluster health, resource usage, and implement auto-scaling policies.

6. Monitoring & Incident Management

• Deploy and maintain monitoring tools (Prometheus, Grafana, Datadog, or ELK stack).
• Define SLIs, SLOs, and error budgets; drive blameless post-mortems.
• Participate in on-call rotations and lead incident response efforts.

What Qualifies You

• 8+ years in SRE, DevOps, or Systems Engineering roles.
• Experience with Terraform or other IaC tools.
• Familiarity with service mesh (Istio/Linkerd) and CNI plugins (Calico/Cilium) or similar.
• Understanding of zero-trust networking and SSO integrations.
• Certifications: RHCE, CKA, or CISSP are a plus.

OS

Expert in Rocky Linux, CentOS, RHEL (6+ years); Windows Server experience

Security

WAF, vulnerability scanning, LDAP, OS hardening, kernel patching

Automation

Ansible (playbooks, roles, AWX/Tower), Python/Shell scripting

CI/CD/SCM

GitHub Enterprise administration, GitHub Actions, branch protection rules

Containers

Docker (build/security scanning), Kubernetes (deployment, networking, storage)

Web Servers

Apache, Nginx (configuration, SSL, reverse proxy)

Monitoring

Prometheus, Grafana, ELK, or commercial tools (Datadog/New Relic)

Code Security

SAST/DAST tools (SonarQube, Snyk, Checkmarx)

Soft Skills & Cultural Fit

• Strong communication and documentation skills.
• Ability to mentor junior engineers and conduct technical interviews.
• Collaborative mindset with DevOps/DevSecOps philosophy.
• Calm under pressure during incidents; drive for continuous improvement.
• Manage and maintain Linux-based systems (Rocky Linux, CentOS, RHEL) in production and staging environments.

XTIUM is an equal opportunity employer.