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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Site Reliability Engineer (SRE) - **Company:** Serco - **Location:** Herndon, VA, United States - **Experience:** Expert - **Contract:** Contract - **Skills:** Amazon Web Services, Automation of Tests, Bash Shell, Cloud Computing, Cloud Engineering, Configuration Management, CompTIA Security+, Cyber Security, Continuous Integration, Linux, DevOps, Domain Name System (DNS), Hypertext Transfer Protocols (HTTP), Python (Programming Language), Networking Basics, Routing, Red Hat Enterprise Linux, Reliability Engineering, Runbook, Software Configuration Management, Software Deployment, Software Engineering, TCP/IP, Software Vulnerability Management, Data Logging, Scripting, Load Balancing, Reliability of Systems, Firewalls (Computer Science), Infrastructure as Code (IaC), Git, Containerization, Kubernetes, Infrastructure Automation Frameworks, Information Technology, Deployment Automation, Docker - **Published:** October 22, 2026 - **Apply:** https://dejobs.org/x/x/1A75E62CE17440848117B80E5B3A7540/job/ ## About the Role * Bachelor's degree in Computer Science, Information Technology, Engineering, or a related technical field * 10 years of experience in systems administration, cloud engineering, DevOps, SRE, or a related technical role. * An active interim or Secret security clearance. * An active CompTIA Security+ certification. * Hands-on experience working with AWS services and cloud infrastructure. * Experience administering Linux, preferably Red Hat Enterprise Linux (RHEL). * Experience with Docker container technologies. * Previous experience supporting or working with a container orchestration platform, such as Kubernetes, Amazon EKS, or Amazon ECS. * Experience building and managing container images and container registries. * Experience developing, maintaining, or troubleshooting CI/CD pipelines. * Working knowledge of Git and source-code management practices. * Experience with scripting or automation using Python, Bash, and/or similar technologies. * Understanding of networking fundamentals, including TCP/IP, DNS, HTTP/HTTPS, load balancing, routing, and firewalls/security groups. * Experience troubleshooting complex technical issues across applications, operating systems, networks, and infrastructure. * Ability to work collaboratively with development, infrastructure, cybersecurity, and operations teams. * Ability to travel 10%. If you are interested in working with a passionate Serco team - then submit your application now for immediate consideration. It only takes a few minutes and could change your career! ## Description We are seeking a Senior Site Reliability Engineer (SRE) to support and improve the reliability, availability, security, and performance of applications and infrastructure hosted within an Amazon Web Services (AWS) cloud environment. The SRE will work closely with application development, cloud infrastructure, cybersecurity, and operations teams to automate deployments, maintain containerized workloads, support Red Hat Enterprise Linux (RHEL) systems, and improve CI/CD pipelines and orchestration capabilities. The successful candidate thrives in a fast-paced, results-driven environment, has a strong systems administration and cloud engineering foundation with an automation-first mindset and an interest in improving system reliability through monitoring, infrastructure as code, automated testing, and repeatable deployment processes. This position offers the ability to work a hybrid schedule with the requirement to perform on-site support at the Pentagon up to 80%. In this role, you will: * Serve as a senior technical authority for AWS cloud infrastructure, Linux platforms, containers, CI/CD, automation, and Operational and Engineering best practices. * Architect, implement, maintain, and improve the reliability, availability, performance, and security of AWS-hosted applications and infrastructure. * Design and support containerized applications using technologies such as Docker, Kubernetes, Amazon ECS, and Amazon EKS. * Administer and troubleshoot Red Hat Enterprise Linux (RHEL) servers and associated services. * Establish and implement Infrastructure as Code (IaC) and configuration-management standards. * Develop, maintain, and troubleshoot CI/CD pipelines used to build, test, scan, and deploy applications and infrastructure. * Design and Implement container orchestration platforms and automated application deployments. * -Automate infrastructure provisioning, configuration, deployment, and operational tasks. * Implement and maintain monitoring, logging, alerting, and observability solutions. * Lead troubleshooting of complex production issues spanning applications, containers, operating systems, networks, CI/CD pipelines, and AWS infrastructure. * Participate in incident response, root-cause analysis, and corrective-action activities. * Identify repetitive operational tasks and develop automation to reduce manual effort and operational risk. * Work with development and security teams to integrate security controls and automated security testing into CI/CD pipelines. * Develop and maintain operational documentation, runbooks, and standard operating procedures. * Support system patching, vulnerability remediation, configuration management, and security-hardening activities.