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Senior Software Engineer (SWE-3)

LeidosEllicott City, MD🇺🇸United StatesPosted Aug 11, 2026

Why This Role Stands Out

Advance your career as a Senior Software Engineer at Leidos, where you'll develop innovative analytic tools with significant national security impact and enjoy competitive compensation and flexible hybrid work. This role is perfect for experienced developers who thrive in a collaborative, fast-paced environment focused on cutting-edge technology and continuous learning. Apply today to join a team that's pushing boundaries and making a difference.

Quick Overview

Salary
$107.9k - $195.1k/yr
Seniority
Mid Senior
Employment type
Full Time
Work mode
Hybrid
Location
Ellicott City, MD, United States
Posted
5 weeks ago
Machine LearningAgileConfluenceJavaJiraJupyterPython

Job Description

Senior Software Engineer | Ellicott City, MD | Hybrid | $107,900.00 - $195,050.00

This employer is a recognized leader in providing innovative technology solutions and services to government and commercial clients. They are known for their commitment to national security and fostering a culture of rapid innovation and collaboration. This is an opportunity to join a dynamic team pushing the boundaries of data analytics and software development.

The Role

  • Collaborate with data scientists and analysts to solve complex strategic problems.
  • Perform end-to-end software engineering, including prototyping, development, integration, testing, and deployment.
  • Develop innovative analytic tools to improve discovery and tradecraft.
  • Operationalize data science models into robust solutions.
  • Focus on advanced technology research and rapid prototyping.

What You'll Need

  • Bachelor's degree plus eleven (11) years of relevant experience or equivalent.
  • Strong experience with Jupyter Notebooks, Java MapReduce, and Python PySpark.
  • Proficiency with statistical analysis, machine learning fundamentals, and big data technologies.
  • Experience with Jira, Confluence, Gitlab, and Agile methodologies.
  • Active TS/SCI with Polygraph security clearance is required.
  • Experience with Data Science, ML, AI, and Large Language Models (LLMs) is desirable.

What's On Offer

  • Competitive salary and comprehensive benefits package.
  • Opportunities for technical upskilling, education, and training support.
  • Flexible work schedules.
  • A mission-focused environment with significant impact.
  • Generous 401K match and immediate vesting.

Apply via Haystack today!

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