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Principal​/Sr Principal Cyber Software Engineer

Job in Fairfax, Fairfax County, Virginia, 22032, USA
Listing for: Relha LLC
Full Time position
Listed on 2026-02-18
Job specializations:
  • Software Development
    Software Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Principal / Sr Principal Cyber Software Engineer

RELOCATION ASSISTANCE:
Relocation assistance may be available

CLEARANCE TYPE:
Polygraph

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.

Join Northrop Grumman on our continued mission to push the boundaries of possible across land, sea, air, space, and cyberspace. Enjoy a culture where your voice is valued and start contributing to our team of passionate professionals providing real-life solutions to our world’s biggest challenges. We take pride in creating purposeful work and allowing our employees to grow and achieve their goals every day by Defining Possible.

With our competitive pay and comprehensive benefits, we have the right opportunities to fit your life and launch your career today.

At the heart of Defining Possible is our commitment to missions. In rapidly changing global security environments, Northrop Grumman brings informed insights and software-secure technology to enable strategic planning. We’re looking for innovators who can help us keep building on our wide portfolio of secure, affordable, integrated, and multi-domain systems and technologies that fuel those missions. By joining in our shared mission, we’ll support expanding your personal network and developing skills, whether you are new to the field, or an industry thought leader.

At Northrop Grumman, you’ll have the resources, support, and team to do some of the best work of your career.

Northrop Grumman Mission Systems is seeking an experienced Principal / Senior Principal Cyber Software Engineer to join our team supporting a program in the Signals Intelligence Mission Solutions (SMS) Department.

This position will be located at a Mission Systems Sector site in Chantilly, VA.

As a Senior Software Engineer on the Triton team, you will have the following responsibilities:

Develop and deliver software to meet mission partner requirements.

Develop both user and developer-level documentation.

Participate in setting the team’s technical direction in alignment with operational requirements and the sponsor’s technical roadmap.

Collaborate with the team to review and improve processes (development, test, governance, stakeholder interactions),

Communicate project status, roadblocks, technical and process proposals to the team and stakeholders.

Prioritize development efforts with mission partners.

Define the complexity, scope, and resources needed to integrate new requirements.

Basic Qualifications for Principal (T03):

Active Top Secret / SCI security clearance with poly to be considered. TS/SCI with poly eligibility must be in place by the start date and must stay in place through employment.

Minimum education and experience are 5 years’ experience with Bachelor’s in Science; 3 years’ experience with Masters; 1 years’ experience with PhD.

Proficient in C#, C++, or

C.

Experience with Python or Ruby scripting languages.

Experience developing software on Agile teams with a strong track record of delivering solutions.

Knowledge of software development life cycle.

Strong creative problem-solving and troubleshooting skills, with the ability to visualize and implement innovative solutions to problems.

Strong ability to collaborate and excel on a team.

Basic Qualifications for Senior Principal (T04):

Active Top Secret / SCI security clearance with poly to be considered. TS/SCI with poly eligibility must be in place by the start date and must…

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