Software Engineer

Leidos is seeking a talented Software Engineer to help lead the development of next-generation software capabilities within our dynamic research and development environment. In this role, you'll design and deliver innovative Knowledge Management solutions that power data-driven decision-making across critical national security missions. You'll work at the intersection of data engineering, AI, and full-stack development, building scalable platforms that transform complex data into actionable insights. What You'll Do Design and develop Knowledge Management systems, including data pipelines, ontologies, and AI-enabled platforms Build modern web applications (front-end and back-end) to support search, discovery, and analysis Develop and maintain ETL pipelines and data lake architectures Integrate AI/ML capabilities, including Generative AI and LLM APIs Collaborate across teams to gather requirements and deliver scalable, mission-focused solutions Support data analysis, modeling, simulation, and visualization efforts Ensure software quality through testing, validation, and performance optimization Deploy solutions in secure, cloud-based, and containerized environments, This early-career fullstack role is tailored for recent graduates eager to accelerate their growth by building impactful products. You will contribute to and gradually take ownersh…

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Experience in software development and system design, with a strong foundation in computer science principles Proficiency in one or more programming languages such as Python, Java, C++, R, or JavaScript/TypeScript Experience building applications using React or Angular, and back-end frameworks such as FastAPI Familiarity with SQL and NoSQL databases Working knowledge of cloud platforms (preferably AWS) and containerization technologies (e.g., Docker) Experience with data pipelines, ETL processes, and data management systems Exposure to Generative AI / LLM APIs (e.g., OpenAI, Anthropic, Bedrock) Understanding of software testing frameworks (e.g., pytest, Playwright, Jest) Ability to work in Linux/Unix and Windows environments Strong communication skills and experience collaborating with technical and non-technical stakeholders, Bachelor's degree in computer science, Information Systems, Systems Engineering, or a related field Minimum of 1+ years of relevant experience Interest in supporting Intelligence Community and DoD missions U.S. Citizenship required Preferred Qualifications Advanced degree (MS) in a relevant technical field Experience with AI/ML, LLMs, and AWS Bedrock Familiarity with DTRA R&D or Combatant Command environments Experience integrating COTS/GOTS tools, including 3D modeling, simulation, or visualization platforms Clearance Requirements Must be eligible to obtain a TS/SCI with Polygraph Active TS/SCI or Top Secret clearance with current SSBI strongly preferred What Sets You Apart Detail-oriented with strong problem-solving skills Comfortable working in fast-paced, ambiguous environments Able to independently research and implement innovative solutions Effective collaborator who thrives both independently and on teams Strong technical writing and presentation skills

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 . 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 . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the . 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.

At Leidos, your work directly supports critical national security missions. You'll join a collaborative, forward-thinking team where innovation is encouraged and your contributions make a real impact. 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: April 23, 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 $57,850.00 - $104,575.00 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 ., SaidGig + Washington DC + $100.00 per hour Join a dynamic model-training project with a leading foundational model AI lab, where your expertise in Python will play a crucial role in developing complex, production-grade syst… + 46 mins ago, © 2026 Careerjet All rights reserved