Full-Time
Senior Software Engineer
Updated on 8/23/2026
Leidos
10,001+ employees
Defense, intelligence, and civil IT solutions
Compensation Overview
$154.1k - $278.5k/yr
No H1B Sponsorship
Annapolis Junction, MD, USA
In Person
US Top Secret Clearance Required
Master's
 Software Engineering (1) |
|---|
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- A master's degree and 15 years of prior relevant experience are required; additional experience may substitute for the degree.
- Demonstrated experience with Java is required.
- Experience or familiarity with multiple Java frameworks, including Spring Boot, Spring Data, Java Enterprise Edition, Java Persistence API, Enterprise JavaBeans, Java Transaction API, Servlet, Jackson, Jersey, Swing, and JavaFX, is required.
- Experience or familiarity with multiple languages, including JavaScript, Python, C/C++, Groovy, and Structured Query Language, is required.
- Experience with development integrated development environments such as Eclipse, Visual Studio Code, Visual Studio, Rhapsody, and WebStorm is required.
- Experience with databases such as Oracle, PostgreSQL, MongoDB, and SQL Server is required.
- Experience with web application user interface development, database structures, the Spring Framework, and/or AngularJS, JSON, HTML, XML, and XSLT is required.
- Experience with software source control and configuration management tools is required.
- Experience developing on Windows operating systems is required.
- Documented professional experience with web services is required.
- A strong understanding of sound software development principles and practices is required.
- The ability to plan and prioritize personal tasking and communicate effectively verbally and in writing is required.
- The ability to perform high-quality work independently and with a team in a fast-moving environment is required.
- An active TS/SCI clearance with polygraph is required.
- Perform software development lifecycle activities as an individual contributor and member of an Agile development team.
- Turn Agile user stories into implementable concepts through development, unit testing, integration and testing, and deployment of new capabilities for a complex enterprise system.
- Participate in daily stand-ups, Sprint Planning, Program Increment Planning, and related team activities.
- Analyze and study complex system requirements.
- Use design software tools, formal specifications, data flow diagrams, and accepted design techniques.
- Apply software engineering principles to produce code that is modifiable, efficient, reliable, understandable, fault tolerant, and reusable.
- Provide software process management and control throughout the coding portion of the software development process.
- Promote code reuse and cross-program collaboration while reducing maintenance costs by creating common functions and shared actions for developers and testers.
- Engineer, author, tune, and document automation scripts in a development environment.
- Deploy automation scripts to the test and production bench.
- Experience with Java Enterprise Edition, including Enterprise JavaBeans, Java Persistence API, Java Transaction API, Java API for XML Binding, Java API for RESTful Web Services, and Java API for XML Web Services; Structured Query Language; application servers such as Tomcat, WebLogic, and JBoss; the Spring Framework; and scripting.
- Experience with XML, XML Schema Definition, Simple Object Access Protocol, Web Services Description Language, XSLT, REST, JSON, YAML, Docker, Podman, Kubernetes, and OpenShift.
- Experience with JavaScript frameworks such as AngularJS, Bootstrap, and jQuery.
- Experience with testing and mocking frameworks such as JUnit, Jupiter, Mockito, Jasmine, Karma, Cucumber, Unified Functional Tester, Selenium, and FITNesse.
- Experience with build tools such as Maven, CMake, RPM, Jenkins, and Nexus.
- Experience developing on Linux operating systems.
- Experience with technologies underlying cryptographic systems, including symmetric and asymmetric cryptography, ASN.1 encoding, XML canonicalization, and digital signatures.
- Experience with high-level requirements management, requirements decomposition, secure systems engineering and development, trade-off analysis, interface control, testing, and continuous integration.
- Experience developing on Agile teams using Pair Programming, Test-Driven Development, Refactoring, and Acceptance Test-Driven Development.
- Experience with Behavior-Driven Development.
- Experience with secure software development, including Layer 7 Policy.
- Experience with Scrum, the Scaled Agile Framework methodology, SAFe Agilist Certification, or membership on an Agile team.
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
Get referred to Leidos
See people who can refer or advise you
Simplify's Take
What believers are saying
- Q2 2026 revenue hit $4.56 billion, and management raised full-year guidance August 4.
- $5 billion in quarterly awards and 1.1 book-to-bill show durable demand.
- The August 3 ONI award extends Hopper work through July 2030.
What critics are saying
- July 2026 layoffs hit 305 indirect employees, signaling continued cost-cutting pressure.
- MHS GENESIS in-sourcing and suspended incentive payments keep Health margins under strain.
- A lost recompete on major DoD intelligence programs would compress backlog and profitability.
What makes Leidos unique
- Leidos combines defense, intelligence, aviation, and civil federal missions under one contract engine.
- Its flight-proven SDA payloads on orbit since 2023 validate space-sensing execution.
- The August 13 Singapore A*STAR lab deepens ATM, AI, and cybersecurity credibility.
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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
6 month growth
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↑ 8%Students at immersive AI camp explore career paths. Daniel Pellegrom Director, Corporate Social Responsibility Why it matters * Hands-on AI experience makes technology careers tangible. * Early STEM access expands future career pathways. * Industry partnerships connect learning with real-world applications. Artificial intelligence (AI) is transforming how Csr Company solve problems, make decisions, and address some of the world's most complex challenges. Advancing AI responsibly requires more than technology alone. It requires curious, skilled innovators who can build, question and improve the systems shaping the future. This is why Leidos partnered with North Carolina Central University's (NCCU) Institute for Artificial Intelligence and Emerging Research (IAIER) and Amazon Web Services (AWS) to give the next generation of innovators firsthand experience building with AI. Real world examples make AI careers tangible. From July 15-17, twenty rising high school juniors and seniors from North Carolina, Pennsylvania, and Colorado participated in an immersive AI Career Immersion summer camp on NCCU's campus in Durham, North Carolina. The three-day program introduced students to generative AI, computer vision, and reinforcement learning through a combination of classroom instruction, hands-on projects, and conversations with technology professionals. The goal was simple: help students see themselves not only as users of AI, but as the people who will create, improve, and responsibly advance it. The program was developed under the leadership of Corey Hendricks, Leidos vice president of Solution Architecture and an NCCU alumnus. Working alongside NCCU faculty and AWS technical leaders, Hendricks helped create an experience that connected emerging technology concepts with real-world applications. Its goal was for students to see that they can build the technologies shaping its future - and that companies like Leidos are eager to help them get there. Being able to work with my alma mater to help introduce these students to the possibilities of AI made this experience especially fun. Corey Hendricks VP, Solution Architecture, Leidos Learning AI by building AI. Throughout the camp, students moved beyond theory and applied AI concepts through hands-on projects. They built generative AI applications using AWS PartyRock, trained autonomous racing models with AWS DeepRacer and explored how technologies such as computer vision and reinforcement learning are being used to solve complex challenges. The experience culminated in a DeepRacer competition where students optimized their models, evaluated performance and explained their design decisions, reinforcing the importance of experimentation, critical thinking and responsible AI development. Connecting students with real-world innovation. The camp brought together the strengths of industry and academia to give students a real-world perspective of how AI is developed and applied. NCCU faculty introduced students to the foundations of artificial intelligence and machine learning, while AWS and Leidos experts provided hands-on instruction and connected emerging technologies to real-world applications in areas such as trusted AI, cybersecurity and computer vision. Preparing tomorrow's workforce requires more than teaching students about artificial intelligence. It requires giving them opportunities to see themselves as creators, problem-solvers and future leaders in the field. Through partnerships with Leidos and AWS, Csr Company connected foundational learning with hands-on application, career exposure and mentorship. These experiences help students recognize that they have a place in the future of AI and can play an active role in shaping it. Dr. Siobahn Day Grady Founding Director of the Institute for AI and Emerging Research (IAIER) AWS solutions architect Caleb Anthony designed the camp's hands-on technical curriculum, developed the student instructional materials, built the cloud learning environment and led students through interactive experiences using AWS PartyRock and AWS DeepRacer. Leidos volunteers connected classroom lessons to real-world applications and shared their career journeys, helping students understand the many pathways available in technology. Through support from Durham Public Schools, students from the local community gained access to an immersive introduction to AI and the opportunities available in this rapidly evolving field. Investing in the future of technology. By the end of the program, every student had built multiple AI applications, trained a custom reinforcement learning model and presented their work to peers. Each participant earned a certificate of completion and received resources to continue exploring AI beyond the camp. The experience reflects Leidos' commitment to expanding access to STEM education, strengthening communities and preparing the next generation of technology leaders. As part of the company's participation in the White House's Pledge to America's Youth, Leidos is helping create meaningful opportunities for students to explore careers in emerging fields such as artificial intelligence. For Leidos, the camp represents more than a successful summer program, it shows how investing in partnerships with universities, business partners and local communities can build a resilient, diverse workforce prepared to address the future's complex challenges. Three things to remember * Twenty rising high school juniors and seniors built generative AI applications and trained reinforcement learning models during a three-day immersive experience. * Leidos, North Carolina Central University, and Amazon Web Services combined academic instruction, technical expertise, and real-world applications to bring AI careers to life. * Early access to emerging technology can expand career pathways and help build the skilled, diverse workforce needed to advance AI responsibly.
Anduril wants both halves of $1.5 DHS counter-UAS contract. Stay Connected Find opportunities - and win them. By Nick Wakeman , Editor-in-Chief, Washington Technology August 14, 2026 02:04 PM ET The company secured an award for the services track, but argues it should have also won a spot on the hardware/software portion. Anduril is unhappy that it did not land spots in both portions of a $1.5 billion Homeland Security Department contract for counter-unmanned aircraft systems. The company won a position as one of the comprehensive service providers in track two, but did not receive an award in track one for hardware/software and ancillary services. Anduril is challenging DHS' evaluation of its proposal and argues that it should have received awards for both tracks of the five-year C-UAS vehicle, awarded earlier this month. Track one winners are BAE Systems, CACI International, Dedreone Defense, D-Fend Solutions, EMS Defense Technologies, Fortem Technologies and Leidos. Anduril's competitors in track two are Astrion, BAE, Booz Allen Hamilton, General Dynamics IT, Leidos and Parsons Corp. DHS received 57 offers for track one and 47 for track two. Bidders could pursue both tracks if they wanted to. Anduril filed its protest on Aug. 12. A Government Accountability Office decision is due by Nov. 20.
Leidos reported strong second-quarter results, beating analyst estimates across key metrics. Revenue reached $4.56 billion, up 7.2% year-on-year and surpassing expectations by 2.6%. Adjusted earnings per share of $3.26 beat forecasts by 12.1%. CEO Thomas Bell highlighted robust demand in the Defence segment, which posted a 2.2 book-to-bill ratio. The company raised its full-year revenue guidance to $18.3 billion and lifted adjusted EPS guidance to $12.35 at the midpoint. During the earnings call, analysts probed several areas. Questions focused on government in-sourcing impacts on the MHS GENESIS programme, Health segment margin expectations amid suspended incentive payments, and free cash flow growth drivers. CFO Chris Cage emphasised strong cash performance and ongoing efficiency projects. Management pointed to maturing programmes and new fixed-price contracts supporting future margin expansion.
Leidos and Singapore's A*STAR I[2]R partner to accelerate global air traffic management capabilities. August 13, 2026 RESTON, Va. /3BL/ - As global air traffic and complexity increase, Leidos (NYSE: LDOS) and the Agency for Science, Technology and Research's Institute for Infocomm Research (A*STAR I[2]R) will collaborate on new air traffic management (ATM) technologies designed to help the aviation industry accommodate future growth. The partners are establishing a joint laboratory in Singapore, managed by A*STAR I[2]R, that will focus on developing advanced ATM and related aviation solutions with an emphasis on automation, digital operations, as well as integrating newly developed capabilities into existing and emerging aviation systems. "This partnership reflects Leidos' continued commitment to the Indo-Pacific region while accelerating capabilities that can support a more efficient, resilient and sustainable future for air travel," said Jim Preaskorn, Leidos vice president of ATM. "As aviation systems become more connected and complex, the industry needs new tools that help controllers make faster, more informed decisions." The approach combines Leidos' expertise in ATM, artificial intelligence (AI) and cybersecurity with A*STAR I[2]R's capabilities in data analytics, advanced communications and applied research. "At A*STAR I[2]R, we bring deep expertise in developing advanced technologies and translating research into real-world applications, making us a strong partner for innovation," said Dr. Sun Sumei, executive director at A*STAR I[2]R. "Through this collaboration, we look forward to co-innovating on next-generation ATM solutions by leveraging our capabilities in AI, communications and data for the aviation sector in the Indo-Pacific." With global passenger traffic projected to approach 10 billion passengers annually, the partnership supports Leidos' investments in aviation modernization and strengthens the company's continued growth across one of the world's fastest-growing aviation markets. About Leidos Leidos is an innovation company rapidly addressing the world's most vexing challenges in national security, aviation, transportation and critical infrastructure. Headquartered in Reston, Virginia, with approximately 50,000 employees worldwide, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended Jan. 2, 2026. For more information, visit Leidos.com. Certain statements in this announcement constitute "forward-looking statements" within the meaning of the rules and regulations of the U.S. Securities and Exchange Commission (SEC). These statements are based on management's current beliefs and expectations and are subject to significant risks and uncertainties. These statements are not guarantees of future results or occurrences. A number of factors could cause our actual results, performance, achievements, or industry results to be different from the results, performance, or achievements expressed or implied by such forward-looking statements. These factors include, but are not limited to, the "Risk Factors" set forth in Leidos' Annual Report on Form 10-K for the fiscal year ended January 2, 2026, and other such filings that Leidos makes with the SEC from time to time. Readers are cautioned not to place undue reliance on such forward-looking statements, which speak only as of the date hereof. Leidos does not undertake to update forward-looking statements to reflect the impact of circumstances or events that arise after the date the forward-looking statements were made. Media Relations Brandon Ver Velde Senior Media Relations Manager (571) 526-6257 | [email protected]
Army-Navy Cup XV to return to Subaru Park on October 9, 2026. Philadelphia Union announced on Aug. 7 that Army-Navy Cup XV, presented by Leidos, will take place at Subaru Park on Friday, October 9, 2026. The event is part of a new multi-year extension with the Army West Point Athletic Association, the Naval Academy Athletic Association, and Leidos that will keep the collegiate soccer event at Subaru Park through at least 2030. Now in its fifteenth year, Army-Navy Cup has become a prominent annual college soccer event and a key non-Union fixture at Subaru Park. The upcoming edition will feature an Army-Navy doubleheader: the women's match begins at 4:00 p.m. Eastern Time followed by the men's match at 7:00 p.m., both as Patriot League contests within the traditional rivalry. Tickets are expected to go on sale in mid-August. "Army-Navy Cup has become one of the most meaningful and prestigious events we host at Subaru Park, and extending this partnership through at least 2030 is a tremendous point of pride for the Philadelphia Union," said Philadelphia Union President Tim McDermott. "We are grateful to Army West Point, the U.S. Naval Academy, Leidos and all of the partners who worked together to create the path forward for this event. Army-Navy Cup represents so much of what makes sports special. It is a privilege for our club to continue providing a world-class stage for this rivalry." The first Army-Navy Cup was held in 2012 after being created by Philadelphia Union, which functions as a professional soccer team in Major League Soccer focused on representing Philadelphia while fostering fan involvement and community ties, according to the official website. Last year's doubleheader drew over 11,000 fans - a record attendance - with Army West Point winning the men's match and both women's teams playing to a draw. Tom Thodorakis, Director of Athletics at Army West Point, said: "The Army-Navy Cup has grown into one of the best events in all of college soccer, and we're excited to continue our partnership with the Philadelphia Union and Subaru Park for the next five years... We're grateful for this partnership and look forward to continuing to showcase one of the greatest rivalries in sports while creating a memorable experience for our cadet-athletes and fans alike." The event coincides with celebrations marking America's 250th anniversary; additional programming related to these commemorations will be announced later. Michael Kelly from Navy Athletics said: "There is no environment in college soccer that matches the energy, intensity, and passion of the Army-Navy Cup... It has truly cemented itself as the premier regular-season fixture on the collegiate calendar." Tom Downey from Leidos added: "Leidos is extending our partnership through 2030... As America marks its 250th anniversary, this year's event offers an especially meaningful opportunity to celebrate their dedication, teamwork and service."