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Leidos

Defense, intelligence, and civil IT solutions

Site Reliability Engineer

Full-TimeUpdated on 10/11/2026
No salary listed
Mid
Wollongong, Australia+3 moreMore locations: Junortoun, Australia | Canberra ACT, Australia | Melbourne VIC, Australia
Remote
Canada Citizenship Required

About the job

Requirements
  • Experience working as a Site Reliability Engineer, Systems Engineer, or in a comparable infrastructure-focused role supporting production environments.
  • Experience in Linux/UNIX administration, including troubleshooting, performance analysis, and operational support within enterprise environments.
  • Capability in developing automation using Python, Go, Bash, or similar scripting languages to improve operational efficiency and reduce manual effort.
  • Experience implementing and maintaining Infrastructure as Code and configuration management solutions using tools such as Terraform, Ansible, Puppet, or Chef.
  • Knowledge of monitoring, logging, and observability practices, with the ability to use service metrics and operational data to improve reliability and performance.
  • Experience supporting virtualised and/or cloud-based environments, including technologies such as VMware, AWS, Azure, or GCP.
  • Experience working with CI/CD pipelines and deployment automation tools such as Jenkins, GitLab CI, or similar platforms.
  • Ability to investigate complex incidents, contribute to root cause analysis, and implement sustainable corrective actions.
  • Must be an Australian citizen holding an active TSPV security clearance, with the ability to successfully obtain and maintain a DISA/OSA.
Responsibilities
  • Support the availability, capacity, and reliability of complex production environments, applying software engineering principles to infrastructure and operational challenges.
  • Provide Level 2 and Level 3 operational support, lead incident response activities, contribute to root cause analysis, and implement preventative improvements that enhance system resilience.
  • Develop and maintain monitoring, alerting, and logging capabilities, using meaningful service metrics, SLOs, and SLIs to drive performance insights and continuous improvement.
  • Enhance automation, infrastructure-as-code, and CI/CD practices across the environment, partnering with development and platform teams to enable consistent, secure, and reliable deployments.
Desired Qualifications
  • Experience supporting systems within Defence, National Security, or other highly regulated environments.
  • Familiarity with fault-tolerant, large-scale production systems and high-availability infrastructure architectures.
  • Knowledge of secure systems administration practices, compliance requirements, and operational governance frameworks.
  • Exposure to DevOps, platform engineering, or site reliability practices within mission-critical environments.

About the company

Leidos is a large technology and engineering company that serves defense, intelligence, healthcare, and civil government customers. It provides scientific, engineering, and IT solutions to help ensure safety, health, and efficiency, from upgrading air traffic control to strengthening cybersecurity for critical missions. The company delivers integrated systems and services—software, research, cyber defense, and digital modernization—through programs that span government and commercial clients. Leidos stands out through its long history as SAIC’s split-off and rapid growth via major acquisitions, creating a broad, mission-focused portfolio across defense, space, intelligence, and civilian sectors. Its overarching goal is to help customers solve hard problems with advanced technology, enabling safer operations and better public services.

Company Size

10,001+

Company Stage

IPO

Headquarters

Reston, Virginia

Founded

1969

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Simplify Jobs

Simplify's Take

What believers are saying

  • TSA awarded Leidos a potential $672.5 million checkpoint contract on September 28, 2026.
  • ARTEMIS extended through summer 2027, preserving Leidos' airborne ISR relevance in Europe.
  • Leidos reported fiscal 2025 revenue of $17.2 billion, up 3% year over year.

What critics are saying

  • Leidos will lay off 84 Ashburn employees November 23 after losing CBP cyber work.
  • Accenture Federal Services now owns the CBP SOC contract, stripping Leidos of sticky cyber revenue.
  • A severe federal procurement pause would crush Leidos' revenue base and hiring pipeline.

What makes Leidos unique

  • Leidos' March 30, 2026 ENTRUST acquisition doubled its energy infrastructure footprint.
  • UpHold Effect launched September 29, 2026, giving federal SOCs auditable agentic automation.
  • October 1, 2026 board addition Jeff McElfresh brings AT&T-scale connectivity and cybersecurity experience.

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Benefits

Medical, dental, & vision insurance

Health Savings account

Income protection

PTO

Paid parental leave

Jury duty pay

Bereavement leave

401(k) Retirement Plan

Employee Stock Purchase Plan

Family Benefits

Growth & Insights and Company News

Headcount

6 month growth

↑ 8%

1 year growth

↑ 8%

2 year growth

↑ 8%
CSRwire
Oct 7th, 2026
Leidos Australia recognised as MRO Business of the Year at the Australian Aviation Awards.

Leidos Australia recognised as MRO Business of the Year at the Australian Aviation Awards. October 7, 2026 Leidos Australia is proud to announce that its Mission Equipment Service Centre (MESC) has been recognised as MRO Business of the Year at the 2026 Australian Aviation Awards. The award highlights the critical role the MESC plays in supporting the availability, reliability and performance of airborne mission systems used in national security, emergency response and defence operations across Australia and the Asia-Pacific region. Based in Cairns, the Mission Equipment Service Centre is a unique sovereign capability, delivering advanced maintenance, repair and overhaul (MRO) services for complex mission and surveillance systems installed on specialised aircraft. Over many years, the facility has grown into a leading centre of technical excellence, providing customers with responsive support and reducing reliance on overseas repair facilities. As the only facility of its kind in the Southern Hemisphere, the MESC provides sovereign support for radar, electro-optical, avionics and integrated mission systems, helping customers maximise aircraft availability and mission readiness while maintaining critical capabilities within Australia. Supporting organisations including the Australian Border Force, Australian Maritime Safety Authority, Defence, State Police and Fire Services, alongside international customers such as the Indonesian Navy, Singapore Ministry of Defence and Royal New Zealand Air Force, the MESC has established a reputation for technical excellence and responsive customer support. The centre is CASA Part 145 certified, operates to ISO 9001 and AS9110 quality standards, is an OEM-authorised L3Harris WESCAM service centre and a Raytheon SeaVue Surveillance Radar Intermediate Level Maintenance facility. Beyond maintenance and repair services, the MESC delivers a comprehensive sustainment capability, supporting research and development, fleet modifications, system upgrades, obsolescence management, flight testing and remote technical support. This end-to-end approach enables customers to sustain and evolve complex mission systems throughout their operational life. Recent projects have further demonstrated the depth of expertise within the team and its ability to solve complex technical challenges. The MESC recently expanded its sovereign capability through several significant achievements, including entry into the US Navy's Naval Supply Systems Command (NAVSUP) program following endorsement by L3Harris WESCAM. The team also developed an innovative in-house repair solution for Auxiliary Fuel Probes on the Dash 8 fleet after the original manufacturer deemed the components irreparable. By engineering a local repair capability, the team restored critical aircraft capability at a fraction of the cost and time of external repair, returning 11 fuel probes to service in less than one week rather than the several months typically required through traditional repair pathways. The MESC's commitment to continuous improvement is reflected in its operational performance. In 2025, the team achieved an average repair turnaround time of just 15 days, well below its internal 30-day target and significantly faster than the industry norm of approximately 90 days. The facility also recorded zero early field failures, zero foreign object debris (FOD) detections, zero maintenance errors and zero negative customer feedback, demonstrating exceptional quality and reliability. Leidos Australia's Vice President Airborne Solutions, Adrian Pettifor, said the award recognises the expertise, innovation and dedication of the people behind the capability. "This recognition is a credit to our Mission Equipment Service Centre team, whose technical expertise, commitment to innovation and customer focus continue to set the benchmark for mission systems sustainment." "Every day they support the systems that enable critical surveillance, emergency response and national security operations. Their work strengthens Australia's sovereign aerospace capability while delivering exceptional outcomes for our customers." The recognition also reflects the strong partnerships the MESC has built across industry. L3Harris WESCAM has described the facility as "a benchmark of excellence in the MRO sector," recognising not only its technical capability but also its culture of accountability and continuous improvement. While the award recognises outstanding performance over the past year, it also highlights the growing importance of sovereign mission systems sustainment capabilities in supporting customers operating in demanding and often mission-critical environments. Leidos Australia congratulates all finalists and winners recognised at this year's Australian Aviation Awards and thanks its customers, partners and suppliers for their continued trust and collaboration. Most importantly, this recognition reflects the dedication, expertise and professionalism of the Mission Equipment Service Centre team, whose work continues to support critical aviation operations across Australia and the region.

PR Newswire
Oct 6th, 2026
Leidos appoints Stephen Vather as senior vice president of investor relations

Leidos has appointed Stephen Vather as senior vice president of investor relations. Vather joins from Leonardo DRS, where he served as senior vice president of corporate development and investor relations, helping lead the company's return to public markets. Previously, he spent nine years at ManTech leading mergers and acquisitions and investor relations, starting his career in investment banking. Vather will succeed Stuart Davis, who rejoined Leidos in 2021 and will continue through the third-quarter earnings cycle before retiring in March. Davis has held investor relations roles at Perspecta, CSRA, ManTech and SRA International over his 42-year career. Leidos, headquartered in Reston, Virginia, employs 50,000 people globally and reported annual revenues of approximately $17.2 billion for the fiscal year ended 2 January 2026.

Objectivist
Oct 2nd, 2026
Navy selects three firms for 30 vessel MUSV push at $40 million each.

Navy selects three firms for 30 vessel MUSV push at $40 million each. The Navy selected three companies to build 30 medium unmanned surface vessels at an average cost of $40 million each, with first deliveries planned before fiscal year 2027 ends and phase two testing already underway. October 2, 2026 * The Navy selected Galliano Marine Services, Huntington Ingalls Industries and Saronic Technologies to provide 10 MUSVs each. * Each agreement carries an average procurement cost of $40 million per vessel, with initial deliveries scheduled before fiscal year 2027 ends. * The Navy plans to expand its unmanned surface vessel fleet from four to 30 vessels by 2030 in the Indo-Pacific. * Phase two removes the high speed requirement and does not require refueling at sea. The U.S. Navy is moving ahead with plans to procure 30 medium unmanned surface vessels after seven companies competed for contracts under its new autonomous maritime robotics initiative. Three firms emerged from the first phase of testing at sea with production agreements. Galliano Marine Services, Huntington Ingalls Industries and Saronic Technologies received the contracts after completing phase one testing for the Medium Unmanned Surface Vessel Family of Systems program. Each company is set to provide 10 vessels. "Each agreement includes the procurement of 10 MUSVs, at an average procurement cost of $40 million per vessel," the Navy said. "The first MUSVs are scheduled to be delivered to the Navy prior to the end of fiscal year 2027." Sea Machines, Leidos, PacMar Technologies and Birdon also completed testing at sea and competed for the Navy work. Those four companies ultimately were not selected to produce vessels under the announced agreements. Sea Machines, Leidos and PacMar Technologies still received $15 million for completing testing at sea. The three companies will now be hosted on the War Department's drone marketplace, where they remain eligible to receive other contracts. Acting Navy Secretary Hung Cao praised the awards as evidence that the Navy was placing a priority on moving quickly to modernize its fleet. The contracts represent another step in the service's effort to expand its use of autonomous maritime systems. During phase one, the Navy evaluated whether the MUSVs could understand a maritime environment, maneuver without assistance from an operator and deploy at sea for extended periods. Those requirements formed the first competitive hurdle for participating companies. Following recent reports that Congress is considering a nationwide voter ID requirement for federal elections, do you support requiring voters to show identification before casting a ballot? By completing the poll, you agree to receive emails from Objectivist.co, occasional offers from its partners and that you've read and agree to its privacy policy and legal statement. Image Credit: Beachside Stock The Navy announced the beginning of phase two testing on Sept. 23 as it continued the procurement process for autonomous systems. Christopher Miller said the next phase will use less demanding requirements than those applied during phase one. "Obviously with phase one, there were some more challenging requirements that they had to meet and so I'm trying to back off of those so that I can have a healthy competitive industrial base," Miller said during a media roundtable on Tuesday. Miller said phase two will not establish a high speed requirement for the MUSVs. The second phase also will not require the vessels to demonstrate refueling at sea. The service is attempting to grow its unmanned surface vessel fleet from four vessels to 30 by 2030 in the Indo-Pacific. That expansion remains a central numerical target as the Navy moves through testing and procurement. The Navy announced its MUSV marketplace in March, replacing the Modular Attack Surface Craft program. Several companies had already been competing for work through that earlier program when it was closed in favor of the marketplace approach. Blue Water Autonomy and Saildrone initially participated in the Modular Attack Surface Craft program. After they were not selected to continue in the MUSV program, the two companies sued the Navy and alleged that they had been unfairly excluded. The marketplace solicitation issued in March called for MUSVs capable of traveling 2,500 nautical miles at 25 knots. It also required the vessels to carry a load of 25 tons on the payload deck while operating in moderate conditions. The push to accelerate autonomous systems research, development and solicitation followed a June report from the U.S. Government Accountability Office. The report said the Navy needed to quickly rethink how it invested in robotic systems to address urgent fleet needs. Image Credit: DoW Leadership of the Navy's robotic and autonomous systems effort also changed during the procurement campaign. Rebecca J. Gassler, who previously spearheaded the program, was fired on Aug. 5 after serving for only 8 months. Christopher Miller replaced Gassler and assumed duties as acting Direct Reporting Portfolio Manager for Robotic and Autonomous Systems. The Navy created that role on the same day Gassler was removed, placing Miller in charge as phase two testing moved forward. The opinions expressed by contributors and/or content partners are their own and do not necessarily reflect the views of Objectivist. Contact Objectivist for guidelines on submitting your own commentary.

Virginia Business
Oct 1st, 2026
Leidos to lay off 84 workers in Ashburn.

Leidos to lay off 84 workers in Ashburn. Cuts related to U.S. Customs and Border Protection contract loss Reston-based federal contractor Leidos expects to lay off 84 employees in Ashburn beginning Nov. 23, the company informed the state this week. The layoffs are related to the end of a federal contract to support the U.S. Customs and Border Protection Cyber Security Operations Center. Accenture Federal Services, the Arlington County-based federal arm of Irish consulting giant Accenture, received a $121.4 million, five-year contract that went into effect Thursday. Leidos previously held the contract awarded by the Department of Homeland Security. Leidos spokesperson Brandon Ver Velde said in a statement that some of the laid-off workers will likely join Accenture Federal Services to continue working on the new contract. "We know this situation is difficult for our affected employees," Ver Velde said. "There are opportunities elsewhere in Leidos for some, while others are expected to join the company taking over the Customs and Border Protection program we lost. Colleagues who are laid off will have access to many resources that can help them through their transitions." The entire facility at 22001 Loudoun County Parkway will not close, according to the Sept. 28 notice to the state, which was sent in compliance with the federal Worker Adjustment and Retraining Notification Act. Bumping rights do not exist, Leidos stated. In 2025, the U.S. Customs and Border Protection Office of Information and Technology announced it was seeking proposals for a recompete of a potential $100 million contract. Leidos was the incumbent contractor, and earlier this year, the U.S. Customs and Border Protection Office awarded the company a six-month bridge contract that ended Sept. 23. Leidos has about 47,000 employees globally and reported about $17.2 billion in revenue for fiscal 2025, a 3% increase from the previous year.

PR Newswire
Oct 1st, 2026
Leidos appoints AT&T COO Jeff McElfresh to board of directors.

Leidos appoints AT&T COO Jeff McElfresh to board of directors. Oct 01, 2026, 08:00 ET RESTON, Va., Oct. 1, 2026 /PRNewswire/ - Leidos (NYSE: LDOS) is welcoming Jeff McElfresh, AT&T's chief operating officer, to its board of directors effective October 1. His joining the Leidos board represents the addition of another excellent leader with success developing and deploying advanced technologies at scale in commercial and public sector markets. McElfresh's AT&T (NYSE: T) career spans more than 30 years. Currently he oversees AT&T's $250 billion nationwide advanced connectivity infrastructure transformation, an expertise that aligns well with Leidos' core digital work and expanding energy infrastructure business. Also very relevant to Leidos, in prior roles he oversaw AT&T's cybersecurity, data management, and labs. Before joining AT&T, McElfresh began his career as a defense tech engineer on aerospace and maritime projects. "We're excited to bring Jeff's expertise and skills to Leidos," said Board Chair Bob Shapard. "The depth and breadth of his experience and leadership will strengthen the board's independent oversight as Leidos executes on its strategic vision." CEO Tom Bell said, "I'm very much looking forward to working with Jeff on our board of directors as we advance our NorthStar 2030 growth strategy. His insights will be invaluable as we develop the critical technologies underpinning our service to national security and other customers." Leidos' board will increase to 11 members with McElfresh's appointment. He'll serve on the board's Corporate Governance and Ethics and Technology and Information Security committees. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 50,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.leidos.com. Media Contact SOURCE Leidos Holdings, Inc.