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Full time
Technology
Senior Software Engineer (SWE-3)
LeidosColumbia, MD🇺🇸United StatesPosted 18 May 2026
Why This Role Stands Out
Advance your career as a Senior Software Engineer at Leidos, where you will develop innovative analytic tools and contribute to national security missions. This hybrid role offers significant growth potential and the chance to collaborate with expert teams, making it an ideal opportunity for experienced developers seeking impactful work and competitive compensation. Apply now to join a company dedicated to technical upskilling and making a difference.
Quick Overview
Salary
$107.9k - $195.1k/yr
Work Type
Hybrid
Schedule
Full Time
Level
Mid Senior
Job Description
Senior Software Engineer | Columbia, MD, United States | Hybrid
We're hiring for a leader in national security solutions, renowned for its innovative approach to complex challenges. This organization is at the forefront of intelligence, analytics, and advanced technology development, offering a dynamic environment where impactful work is a daily occurrence. They are committed to fostering professional growth and making a tangible difference in global security.
The Role
• Develop custom analytics and innovative tools to solve critical strategic problems for the intelligence community.
• Collaborate closely with data scientists and mission analysts to translate complex challenges into actionable solutions.
• Perform end-to-end software engineering, including prototyping, development, integration, testing, and deployment.
• Operationalize data science findings into production-ready systems.
• Work within an Agile framework utilizing tools like Jira and GitLab.
What You'll Need
• Bachelor's degree with a minimum of eleven (11) years of relevant software engineering experience.
• Strong proficiency in Python PySpark, Java MapReduce, and Jupyter Notebooks.
• Solid understanding of statistical analysis, machine learning fundamentals, and big data technologies.
• Experience with customer-specific tools, architectures, and data flows is essential.
• Must possess an active TS/SCI clearance with Polygraph.
• Desirable: Experience with Data Science, ML, AI, and Large Language Models (LLMs).
What's On Offer
• Competitive salary range of $107,900.00 - $195,050.00.
• Flexible scheduling options to support work-life balance.
• Opportunities for technical upskilling and ongoing education support.
• Comprehensive benefits package including 401K with company match and immediate vesting.
• A chance to work on cutting-edge projects with significant national security impact.
Apply via Haystack today!
Skills
Machine Learning
Agile
Java
Jira
Jupyter
Python
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