The Role Build backend services, microservices, APIs, intelligent agents, and AI-enabled workflows for secure mission-critical platforms. Implement Infrastructure as Code, orchestration logic, CI/CD pipelines, and secure cloud deployments aligned with ATO requirements. Collaborate with software, systems, and security engineers using Git-based development practices. Document code, agent behavior, workflows, and system interactions while contributing to an everything-as-code approach. Summary Generated by Built In Position Overview At Leidos, we are advancing mission-critical platforms that simulate, interact with, and act on complex technical and business environments. These platforms leverage agent-based architectures, automation, and AI-driven capabilities to enable intent-driven interaction with systems such as network operations and enterprise processes. As a mid-level Software Engineer, you will be a hands-on contributor building backend services, intelligent agents, and automation workflows that power these platforms. You will work within a multi-disciplinary team of software engineers, systems engineers, ISSEs, and security professionals, collaborating in GitLab to deliver secure, scalable, and compliant AI-enabled solutions. This role is ideal for a developer who is excited about treating systems, automation, and knowledge as code —from infrastructure and deployment pipelines to agent behavior, workflows, and even operational or business logic. You enjoy working with AI and LLMs, building agents that reason and act, and expressing complex intent declaratively through version-controlled artifacts that can be tested, reviewed, and evolved over time. Primary Responsibilities Design, develop, and maintain backend services and microservices that support intelligent, agent-based platforms Build and integrate autonomous or semi-autonomous agents that interact with technical and business systems Develop AI-enabled workflows leveraging LLMs for decision support, automation, analysis, and system interaction Implement APIs and orchestration logic that enable agents and services to collaborate effectively Implement and maintain Infrastructure as Code (IaC) to provision and manage cloud environments Collaborate with systems engineers and ISSEs to translate requirements and security controls into code Contribute to Git-based development workflows, including pull/merge requests, code reviews, and documentation Support CI/CD pipelines and secure deployments aligned with ATO requirements Produce clear technical documentation covering code, agent behavior, and system interactions Contribute to an "everything as code" approach , expressing infrastructure, automation, agent behavior, workflows, and operational artifacts as version-controlled, testable code Required Skills and Experience BS degree and 4+ years of professional software development experience Proficiency in at least one modern programming language (Python preferred; Java or Go acceptable) Experience building backend services, APIs, or microservices Exposure to AI/ML systems, LLMs, or intelligent automation (through professional work or applied projects) Familiarity with Infrastructure as Code concepts and tooling Experience working in GitLab and/or GitHub with collaborative development practices Ability to operate effectively in environments with evolving or ambiguous requirements Must have and maintain a Secret security clearance Preferred Qualifications Active Security+ certification or equivalent IAT Level II certification Experience building or orchestrating agents, workflows, or autonomous systems Familiarity with LLM integration patterns (prompting, tools/functions, retrieval, etc.) Experience with containerization and orchestration technologies (Docker, Kubernetes) Familiarity with cloud platforms (AWS GovCloud preferred) Experience developing AI-enabled systems in regulated or secure environments Experience 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 $87,100.00 - $157,450.00 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. Read Full Description Skills Required Bachelor of Science degree 4 or more years of professional software development experience Proficiency in Python, Java, or Go Experience building backend services, APIs, or microservices Exposure to AI/ML systems, LLMs, or intelligent automation Familiarity with Infrastructure as Code concepts and tooling Experience with GitLab or GitHub and collaborative development practices Ability to work effectively with evolving or ambiguous requirements Active Secret security clearance that must be maintained Active Security+ certification or equivalent IAT Level II certification Experience building or orchestrating agents, workflows, or autonomous systems Familiarity with LLM integration patterns, including prompting, tools, functions, and retrieval Experience with Docker and Kubernetes Familiarity with cloud platforms, preferably AWS GovCloud Experience developing AI-enabled systems in regulated or secure environments Experience applying configuration-as-code, policy-as-code, workflows-as-code, or documentation-as-code Leidos Compensation & Benefits Highlights The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos. About This Summary Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package. Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature. Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience. Learn more about Leidos's Compensation & Benefits → Leidos Insights What's It Like to Work at Leidos? Leidos Culture & Values Leidos Career Growth & Development What's the Work-Life Balance Like at Leidos? Leidos Leadership & Management Leidos Company Growth, Stability & Outlook View all jobs at Leidos View Leidos Profile Report Job