Network Reliability Engineer

The NMCI Service Management Integration and Transport (SMIT) group at Leidos has an opening for a Site Reliability Engineer to focus on the reliability, performance, and scalability of complex distributed systems. Under the SMIT Contract, the Leidos team is responsible for the core backbone for the Navy-Marine Corps Intranet, including cybersecurity services, network operations, network engineering, service desk, seat support services, and data transport.

The SRE will also develop and execute tests focused on system resilience, performance under load, and failure scenarios. They will work in tandem with other Site Reliability Engineers (SREs) and development teams to create automated testing frameworks that simulate real-world conditions that validate system behavior under normal and stress conditions, ensuring our services are resilient and meet established service level objectives (SLOs) The SRE will support the operations and maintenance of the enterprise network. Your work will contribute to the development of robust and scalable services that operate reliably in production.

Your responsibilities will include maintaining the network devices, routing protocols, VLANs, IPS and boundary appliances, and complex computer systems by writing code to automate software releases, monitor systems, and detect and fix problems before users even know there is an issue. You will use these skills to improve site performance and overall reliability.

The SRE Engineer role is responsible for supporting, migrating, automation and optimization of network and software development and deployment process, infrastructure as code, and contribute to the overall maturity of the Site Reliability Engineering program.

Primary Responsibilities

• Work alongside the development and operations teams to ensure speedy and reliable software deployments, monitor systems, and improve overall reliability of the platform, create change management tickets, and perform break fix of network appliances. In addition, as you discover and document system bugs, you have the motivation to go off and fix them yourself.
• Develop features utilize the AI coding tool and repository of scripts to automate, scale, test, and secure the cloud infrastructure and the pipelines.
• Enhance performance monitoring of the various systems via Splunk or other dashboard reporting tools
• Identify performance bottlenecks and optimize the performance of cloud infrastructure
• Contribute to continuing our SRE journey by suggesting ways to improve engineering build, maintenance, automation and reliability across the platform with SRE/DevOps tools and Infrastructure-as-Code.
• Develop and code high-quality pipeline automation workflows to support inside and outside the cloud platform that are appropriate for business and technology strategies.
• Develop and execute test strategies that simulate real-world failure scenarios, including network disruptions, hardware failures, and system overloads.
• Create, script, and run performance tests to measure system behavior under varying levels of load and traffic. Identify bottlenecks, performance degradation, and areas for optimization.
• Design, implement, and maintain automated test suites for infrastructure and application components. Ensure that testing is integrated into the CI/CD pipeline to validate system reliability with every release.
• Build automated systems for continuous performance testing, stress testing, and load testing.
• Work closely with SREs, developers, and operations teams to define reliability goals and develop appropriate testing strategies to validate those goals.
• Ensure that new services and features undergo thorough testing for performance, reliability, and failure recovery before deployment to production.
• Validate that monitoring, logging, and alerting mechanisms are functioning correctly by testing systems under failure conditions.
• Ensure that Service Level Indicators (SLIs) and Service Level Objectives (SLOs) are accurately measured and tracked through automated testing frameworks.
• Resolve most conflicts between timeline, budget, and scope independently but intuitively raise sophisticated or consequential issues to senior management

Basic Qualifications

• Requires BS degree and 8-12 years of prior relevant experience.
• Currently possess and ability to maintain an active DoD Secret security clearance and be eligible for a top secret.
• Minimum of DoD 8570.01 IAT Level II Certification required prior to onboarding and must maintain certification while supporting the SMIT Contract
• Must be able to support program execution in classified environments and access SIPRNet from an NMCI location on short notice (local travel).
• Must have a vendor certification e.g., CCNA, CCNP, Juniper, Palo Alto, Aruba etc.
• Experience with automated script design, coding, debugging, and maintenance skills (using bash, python, etc.) preferred
• Experience in CI/CD toolsets (e.g. Jenkins, GitLab, etc.)
• Experience with network switches, routers, VLANs, DMZ, VPN, IPS, load balancers, and FW.
• Experience with SDWAN and Arista
• Experience in application administration, configuration, and integration
• Familiarity with agile development methodologies
• Skilled and disciplined to work with a distributed team
• Ability to work in a highly collaborative, forward thinking, and innovation-driven environment
• Knowledge of Agile and DevSecOps/SRE concepts and best practices, with a desire to grow that knowledge
• Hand-on experience with Atlassian products (Jira, Confluence, Bitbucket, etc.).
• Experience creating JIRA and/or Azure DevOps workflows, projects, custom configurations
• Experience administrating/maintaining SRE platform via Ansible playbooks (e.g. upgrading Jenkins)
• Experience in automating tasks with scripting languages like PowerShell, or Python
• Integrating/maintaining with various 3rd party CI/CD tools like Jenkins and Gitlab.
• Experience with commercial cloud infrastructure deployment environments such as AWS and Azure.
• Experience with automated provisioning and configuration tools like Terraform, Cloud Formation, Chef, Puppet, Ansible, or similar technologies.
• Working knowledge of the Risk Management Framework (RMF), DISA STIGs

Preferred Qualifications

• Previous work experience providing support to the NGEN-NMCI program
• Experience with Infrastructure as Code (IaC) tools such as Terraform, Ansible, or CloudFormation for automating test environments.
• ITILv4, Scrum Master, or Agile SAFe certification(s) or applicable experience

SMIT-NMCI

NGEN

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:
February 23, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.