Senior Software Engineer – Intelligent Platforms & Agents

Employer description

Position OverviewAt 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 ResponsibilitiesDesign, 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 frameworksDefine and implement patterns for agent orchestration, system interaction, and decision workflowsDrive adoption of Infrastructure as Code, automation, and “controls-as-code” practicesPartner closely with systems engineers and ISSEs to embed requirements and security into platform design and codeEstablish development standards for GitHub-based collaboration, testing, and documentationMentor mid-level engineers through code reviews, pairing, and technical guidanceLead integration of CI/CD pipelines, security tooling, and ATO considerations into everyday developmentCollaborate with stakeholders to translate mission and operational needs into scalable technical solutionsContribute to an “everything as code” approach, expressing infrastructure, automation, agent behavior, workflows, and operational artifacts as version-controlled, testable codeDefine and promote patterns for expressing intent, requirements, automation, and controls as code, enabling consistency, traceability, and automation across the development lifecycle
Required Skills and ExperienceBS degree and 8+ years of professional software engineering experienceDemonstrated experience designing and building complex or distributed systemsStrong hands-on experience developing backend services and microservicesExperience working with AI/ML systems, including LLM integration in production environmentsStrong background in cloud-native architectures and Infrastructure as CodeExperience delivering software in secure, regulated, or compliance-driven environmentsAbility to bridge software development, systems engineering, and security disciplinesStrong technical communication and leadership skillsMust have and maintain a Secret security clearance
Preferred QualificationsExperience building agent-based or autonomous systems in productionFamiliarity with AI orchestration frameworks and patterns (e.g., tool-using agents, multi-agent systems)Experience supporting ATO through automation, documentation, and technical leadershipActive Security+ certification or equivalent IAT Level II certificationBackground mentoring engineers and leading technical decision-makingPassion for applying AI and automation to real-world operational challengesExperience applying “as code” approaches beyond infrastructure (e.g., configuration-as-code, policy-as-code, workflows-as-code, documentation-as-code)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.