Sentinel - Sr Principal Engineer Systems - 18100

RELOCATION ASSISTANCE: Relocation assistance may be available

CLEARANCE REQUIRED FOR START: Yes

CLEARANCE TYPE: 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.

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. 

Northrop Grumman Defense Systems is seeking a Sr Principal Systems Engineer. This position is located in Bellevue, Nebraska and supports the Sentinel program.

What you’ll get to do:

As a Sr. Principal Systems Engineer from the SDS Systems Engineering Functional Homeroom, you will be expected to support large-scale, complex projects from inception to completion that span across functional organizations as a scrum master. Your daily mission is to enable high performing Scrum teams, uphold Agile best practices, and keep delivery flowing toward our business objectives. You will be expected to facilitate scrum ceremonies, maintain sprint backlogs, remove impediments, support/coach/mentor the team, track and report metrics, facilitate communication, and promote a culture of inspection & adaptation.

Additionally, you will be expected to know, understand and leverage agile performance data - such as story-point velocity, sprint burndown, and cumulative-flow metrics - to populate and align with the program’s Earned Value Management (EVM) system, thereby providing transparent, data-driven insight into cost and schedule performance and enabling a proactive program.

As a member of the Modeling, Simulation and Analysis (MS&A) Team, Systems Engineering, Integration and Test (SEIT) Segment, Sentinel Program, you will be expected to support:

• Scrum Master duties

• CI/CD – Continuous Integration / Continuous Delivery Statements of Work

  • Maintain build pipelines for simulation models (e.g., MATLAB/Simulink, Python, C++), ensuring automatic compilation, unit-test execution, and artifact publishing

  • Write and update test scripts that run model verification and validation (V&V) suites on every code commit

  • Monitor pipeline health (build failures, test flakiness) and triage issues with developers and test engineers

  • Implement version-control policies (branching strategy, pull-request reviews) that enforce model provenance and traceability

  • Configure automated metric collection (code coverage, execution time, simulation fidelity) and integrate results into dashboards for stakeholders

• Automation Tools Development Statements of Work

  • Develop reusable tooling (shell/Python/PowerShell scripts, custom plugins) that automate routine modeling tasks such as data preprocessing, parameter sweeps, and result aggregation

  • Create wrapper utilities around existing simulation engines to enable headless execution and integration with CI pipelines

  • Design and maintain a centralized “tool-registry” (e.g., a JFrog Artifactory or internal package index) for versioned simulation libraries and analysis scripts

  • Build UI/CLI front-ends for non-technical engineers to trigger simulations, view status, and retrieve outputs without manual command entry

  • Document tool usage, installation, and troubleshooting in the team wiki and ensure alignment with cybersecurity and configuration-management standards

• Technical Project Management Statements of Work

  • Draft and refine SOW sections that describe deliverables, acceptance criteria, and schedule for mo