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Sr Principal Software Engineer

Job in Boulder, Boulder County, Colorado, 80301, USA
Listing for: Northrop Grumman Corp. (AU)
Full Time position
Listed on 2026-02-26
Job specializations:
  • Software Development
    Software Engineer, C++ Developer
Salary/Wage Range or Industry Benchmark: 137400 - 206000 USD Yearly USD 137400.00 206000.00 YEAR
Job Description & How to Apply Below

RELOCATION ASSISTANCE:
Relocation assistance may be available

CLEARANCE TYPE:
Top Secret

TRAVEL:
Yes, 10% of the Time

Description

At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon.

We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work — and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.

The Launch and Missile Defense Systems division within Northrop Grumman Space Systems is seeking a Senior Principal Software Engineer. Our domain provides rewarding work that contributes to the latest advancements being made in the missile warning, missile defense, battlespace awareness, and technical intelligence mission areas. The position is located in Boulder, CO – Boulder is nestled in the foothills of the Rocky Mountains, and only 25 miles from downtown Denver.

Position Overview:

As a Senior Principal Software Engineer, you will be responsible for the design, development, documentation, testing, deployment, and debugging of software applications. This includes researching, identifying, and implementing solutions to complex, multi-disciplinary software problems. You will be working with a fast-paced and exciting research and development environment that utilizes your familiarity with modern software practices. You are expected to communicate technical information effectively and clearly, and present technical approaches and findings.

Our team of motivated technical talent works closely with the end user (and each other) to ensure the direct mission applicability of developed products.

The Advanced Programs organization pushes the boundaries of innovation, redefines engineering capabilities, and drives advances in efficiently solving mission challenges. Our team is chartered with providing innovative technologies to develop, design, and produce optimized product lines across multiple customers while providing a decisive advantage to the warfighter. Advanced Programs is looking for new members to join our rapidly growing technical team as a Senior Principal Software Engineer based out of Boulder, CO.

Essential Functions:

  • New feature implementation that allows for smooth integration with pre-existing systems
  • Software development using Agile Methodology
  • Software engineering support for multi-language (C/C++ and Python) and complex software systems
  • Enhance usability, performance, and maintainability of systems via analysis and bug fixes
  • Work in cross-discipline teams to communicate, clearly across various levels of engineers
  • Seeking candidates who find satisfaction in working on challenging and diverse assignments in collaborative settings across all levels.

    Basic Qualifications for Senior Principal Software Engineer:

  • An active in-scope U.S. Government DoD Top Secret security clearance with SCI eligibility is required to start
  • Bachelor’s Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 8 years of related experience, or a Master’s degree in a STEM discipline and 6 years experience, or a PhD and 4 years of experience, or 12 years of related experience in lieu of a degree may be considered.
  • Experience with modern C++ software language (C++17, C++20), development tools, and integrated development environments (IDEs) and compilers.
  • Experience with Object Oriented Programming.
  • Experience developing in Linux environments.
  • Experience with developing in cross-platform (Linux/Windows) environments
  • Experience with modular software development architectures/practices with source control tools (Git, CMake, Conan etc.)
  • Experience working with…
  • Position Requirements
    5+ Years work experience
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