At Leidos, we are advancing mission-critical platforms that simulate, interact with, and act on complex technical and business environments. These platforms enable teams to engage with network operations, automate business processes, and gain insight through intent-driven and agent-based systems.
The team operates with a strong belief in "everything as code," using version-controlled artifacts and automation to manage not only infrastructure and software, but also agent behavior, workflows, documentation, and compliance-related controls.
The Senior Software Engineer / Technical Lead is a hands-on technical leader responsible for building and evolving platforms that simulate complex systems, automate operations, and enable AI- and agent-driven interaction with technical and business environments. This role combines deep individual contribution with technical leadership. You will actively write code, build agents, and design AI-enabled services while also guiding architecture, mentoring engineers, and ensuring that software, infrastructure, systems engineering, and security are integrated into a cohesive, compliant development lifecycle.
Primary Responsibilities
Design, develop, and maintain distributed systems and microservices (hands-on coding role)
Build, integrate, and evolve intelligent agents and AI-enabled services using LLMs and automation frameworks
Define and implement patterns for agent orchestration, system interaction, and decision workflows
Drive adoption of Infrastructure as Code, automation, and "controls-as-code" practices
Partner closely with systems engineers and ISSEs to embed requirements and security into platform design and code
Establish development standards for GitHub-based collaboration, testing, and documentation
Mentor mid-level engineers through code reviews, pairing, and technical guidance
Lead integration of CI/CD pipelines, security tooling, and ATO considerations into everyday development
Collaborate with stakeholders to translate mission and operational needs into scalable technical solutions
Contribute to an "everything as code" approach, expressing infrastructure, automation, agent behavior, workflows, and operational artifacts as version-controlled, testable code
Define and promote patterns for expressing intent, requirements, automation, and controls as code, enabling consistency, traceability, and automation across the development lifecycle
Required Skills and Experience
BS degree and 8+ years of professional software engineering experience
Demonstrated experience designing and building complex or distributed systems
Strong hands-on experience developing backend services and microservices
Experience working with AI/ML systems, including LLM integration in production environments
Strong background in cloud-native architectures and Infrastructure as Code
Experience delivering software in secure, regulated, or compliance-driven environments
Ability to bridge software development, systems engineering, and security disciplines
Strong technical communication and leadership skills
Must have and maintain a Secret security clearance
Preferred Qualifications
Experience building agent-based or autonomous systems in production
Familiarity with AI orchestration frameworks and patterns (e.g., tool-using agents, multi-agent systems)
Experience supporting ATO through automation, documentation, and technical leadership
Active Security+ certification or equivalent IAT Level II certification
Background mentoring engineers and leading technical decision-making
Passion for applying AI and automation to real-world operational challenges
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: October 22, 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 $107,900.00 - $195,050.00
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.
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 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.
Pay and Benefits
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.
Securing Your Data
Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.
Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
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About the role
This is a Senior Level role in the Technology field (Software engineering) at Leidos. Senior roles usually expect substantial experience, ownership of results and often the ability to guide others.
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Company description (from The Muse): Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health.
size: Large Size; industries: Information Technology; locations on The Muse: Reston, VA.
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What is the Senior Software Engineer - Intelligent Platforms & Agents job at Leidos?
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