Senior Software Engineer – Intelligent Platforms & Agents

Leidos

1d•$107,900 - $195,050

About The Position

At Leidos, the Intelligent Platforms & Agents team advances mission-critical platforms that simulate, interact with, and act on complex technical and business environments. These platforms support network operations, business-process automation, and insight through intent-driven and agent-based systems. The team follows an “everything as code” approach, using version-controlled artifacts and automation to manage infrastructure, software, agent behavior, workflows, documentation, and compliance-related controls. The Senior Software Engineer / Technical Lead is a hands-on technical leader who builds and evolves platforms that simulate complex systems, automate operations, and enable AI- and agent-driven interaction with technical and business environments. The role combines individual software development with technical leadership: writing code, building agents, and designing AI-enabled services while guiding architecture, mentoring engineers, and integrating software, infrastructure, systems engineering, and security into a cohesive, compliant development lifecycle.

Requirements

Bachelor of Science degree and 8 or more 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.

Nice To Haves

Experience building agent-based or autonomous systems in production.
Familiarity with AI orchestration frameworks and patterns, such as tool-using agents and 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.
Experience applying “as code” approaches beyond infrastructure, such as configuration-as-code, policy-as-code, workflows-as-code, and documentation-as-code.

Responsibilities

Design, develop, and maintain distributed systems and microservices through hands-on coding.
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 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.
Express 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 to enable consistency, traceability, and automation across the development lifecycle.