Software Developer

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Description

Leidos Intelligence Sector delivers advanced technology and mission software across cyber, logistics, security operions, and decision analytics, empowering defense and intelligence customers to stay ahead of evolving global thres. Our mission is simple: equip those who protect the nion with the tools, technologies, and insights they need to succeed in an increasingly complex security landscape.

We are seeking a Senior Software Engineer who doesn’t just build systems, but redefines how they are imagined, developed, and deployed. In this role, you will act as both a lead engineer and technical innovor, driving the design and delivery of AI-enabled, agentic, and intelligent software plforms th accelere modernizion and mission outcomes. You will opere across the full spectrum, from shaping technical stregy and evaluing emerging technologies to prototyping and delivering production-grade solutions.

We’re looking for builders who move with urgency, think boldly, and execute with discipline. You’ll work in a highly collaborive environment, developing scalable, high-quality software while influencing the direction of next-generion capabilities.

The ideal candide brings strong object-oriented design fundamentals, deep backend engineering experience, and a passion for solving complex problems scale. You will contribute across the full software lifecycle while continuously improving performance, reliability, and user experience.

Primary Responsibilities

•  Design, build, and scale distributed, cloud-nive and on-premise systems, including developer plforms and mission-critical applicions.
•  Develop and deploy AI-enabled applicions, including integrion of large language models (LLMs), retrieval-augmented generion (RAG), and agentic workflows into production environments.
•  Architect and implement solutions using modern AI/ML frameworks, orchestrion tools, vector dabases, and microservices-based architectures.
•  Write high-quality, maintainable code in multiple programming languages (e.g., Python, Java, C++, Go), leveraging AI-assisted development tools to accelere delivery and improve productivity.
• Leverage AI to analyze, modernize, and refactor large, complex codebases (e.g., Java, .NET, COBOL, C++).
•  Design and optimize end-to-end AI workflows, including prompt engineering, model evaluion, fine-tuning, and continuous improvement of model performance.
•  Develop and maintain CI/CD pipelines and automed testing frameworks to support rapid, reliable software delivery across environments (on-prem, AWS, Azure).
•  Apply DevSecOps principles to ensure secure, resilient, and compliant software solutions, particularly in government or mission-focused environments.
•  Lead and contribute to technical architecture decisions, ensuring alignment with best practices in scalability, performance, and maintainability.
•  Identify, assess, and mitige technical risks proactively, ensuring system reliability and mission success.
•  Collabore with cross-functional teams and stakeholders to transle requirements into technical solutions, clearly communicing complex concepts to both technical and non-technical audiences.
•  Support software lifecycle management, including version control, release management, and deployment across development, test, QA, and production environments.
•  Contribute to improving developer experience (DevX) through tooling, automion, and workflow enhancements.
• Opere effectively within an Agile development environment, participing in sprint planning, daily stand-ups, and regular demonstrions of working software.

Basic Qualificions

• Bachelor's degree and 8+ years experience in software engineering, including significant experience the senior/architect level. Additional experience may be considered in lieu of a degree.
• Expertise in designing and building distributed systems, developer tools, or plform engineering products.
• Hands-on experience implementing AI/ML systems or integring large language models into production workflows.
• Strong knowledge of agentic frameworks, orchestrion tools, RAG, vector dabases, API design, and microservices.
• Deep understanding of software design pterns, CI/CD, DevSecOps, and cloud-nive architectures (AWS/Azure/GCP).
• Strong coding proficiency in least two modern languages (Python, Go, Java, C#, etc.).
   
• Experience supporting full software development lifecycle (SDLC) from design through deployment and sustainment.
• Proven ability to work independently and lead within Agile/Scrum teams. Experience mentoring junior engineers and guiding best practices. Strong communicion skills to transle complex technical concepts to stakeholders.
• Must be authorized to work in the U.S.
• Must live in the Nional Capital Region area and be able to commute to the Leidos GHQ office. Flexible to work remote with the ability to commute to the corpore office as needed
• Must have active TS clearance with ability to obtain and maintain a TS/SCI security clearance
   

Preferred Qualificions

• Experience leading or contributing to enterprise-wide code reuse, standardizion, and modernizion initiives
• Familiarity with developer experience (DevEx) improvements, including tooling, workflows, and plform engineering concepts
• Hands-on experience with stic analysis, code quality, and security scanning tools (e.g., SonarQube, Fortify, Checkmarx)
• Experience working in cloud environments (AWS, Azure, GCP), including hands-on experience with AWS services such as EC2 and S3, and deploying applicions in containerized architectures (Docker, Kubernetes)
• Working knowledge of multiple programming languages and the ability to opere across diverse technology stacks
• Experience establishing and managing software baselines, inventories, and asset calogs
• Familiarity with open-source frameworks and approaches for evaluing and adopting emerging technologies
• Experience developing and visualizing engineering metrics and performance dashboards
• Background supporting federal, intelligence, or homeland security missions
• TS /SCI with poly clearance

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the stus 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 step 30 — and moving faster than anyone else dares.

Original Posting:

Pay Range:

The Leidos pay range for this job level is a general guideline only and not a guarantee of compension or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, educion, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market da, 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 innovions. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximely $16.7 billion for the fiscal year ended January 3, 2025. For more informion, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. Th's why we craft compension packages th reflect the importance of the work we do for our customers. Employment benefits include competitive compension, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available www.leidos.com/careers/pay-benefits.

Securing Your Da

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-reled informion during any part of the employment applicion 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 communice with you through emails th are genered by the Leidos.com automed system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhsApp, Telegram, etc. If you received an email purporting to be from Leidos th asks for payment-reled informion or any other personal informion (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediely by emailing us 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-Discriminion

All qualified applicants will receive considerion for employment without regard to sex, race, ethnicity, age, nional origin, citizenship, religion, physical or mental disability, medical condition, genetic informion, pregnancy, family structure, marital stus, ancestry, domestic partner stus, sexual oriention, gender identity or expression, veteran or military stus, 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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