Sentinel Principal / Sr Principal Software Integration Engineer- *16853

Northrop Grumman has an opening for a Principal / Sr. Principal Software Integration Engineer to join our team of qualified, diverse individuals. This position can be located in Huntsville, AL or Roy, UT.
Core Technical Skills:

Python proficiency - writing clean, testable code; familiarity with virtual environments, packaging, and type hints

Embedded/hardware interfaces - UART, SPI, I²C, CAN, USB, JTAG, GPIO, PWM, ADC/DAC

Real-time operating systems (RTOS) or bare-metal development basics

Hardware description/validation tools - Oscilloscopes, logic analyzers, multimeters, power supplies, test rigs

Firmware build systems - Make, CMake for cross-compilation

Version control - Git (branching, sub-modules, pull-request workflow)

CI/CD for embedded - Jenkins, GitHub Actions, GitLab CI with hardware-in-the-loop (HIL) runners

Software-Hardware Integration

Designing and implementing drivers/APIs that expose hardware functionality to Python

Using communication protocols (Modbus, MQTT, OPC?UA) to bridge software services and devices

Managing bootloaders, firmware upgrades, and configuration flashing

Testing & Validation

Unit/Component testing - pytest, unittest, hypothesis for pure-Python modules

Hardware-in-the-loop (HIL) testing - automated scripts that program devices, run stimulus, capture response, and assert results

System-level testing - Robot Framework, TestStand, or custom Python harnesses that coordinate multiple subsystems

Automated measurement - pyvisa / pyserial to drive test equipment and log data

Coverage & static analysis - coverage.py, pylint, mypy

DevOps & Deployment

Containerizing test environments (Docker) for simulation and host-side tools

Managing artifact repositories for firmware binaries (Artifactory, Nexus)

Using over-the-air (OTA) or in-field update pipelines

Methodologies

Agile/Scrum or Kanban for cross-functional teams

Familiarity with the V-model or ISO:26262-style verification flows in safety-critical domains

Soft Skills

Strong analytical debugging - ability to trace issues from software logs down to signal integrity on a PCB

Clear communication with electrical engineers, firmware developers, and QA testers

Documentation discipline - hardware interface specs, test procedures, and release notes

Position Benefits:
As a full-time employee of Northrop Grumman, you are eligible for our robust benefits package including:

Medical, Dental & Vision coverage

401k

Educational Assistance

Life Insurance

Employee Assistance Programs & Work/Life Solutions

Paid Time Off

Health & Wellness Resources

Employee Discounts

This positions standard work schedule is a 9/80. The 9/80 schedule allows employees who work a nine-hour day Monday through Thursday to take every other Friday off. This role may offer a competitive relocation assistance package.
Basic Qualifications:
This role can be filled at Principal Software Integration Engineer(T3) or Sr. Principal Software Integration Engineer(T4)
Principal Software Integration Engineer: 5 Years with Bachelor's in related field of study, 3 Years with Masters, 01 Years with PhD or 04 additional years in lieu of a degree.

US Citizenship with Active DoD Secret clearance with a reinvestigation date occurring in the last 6 years.

Ability to obtain Special Program Access (SAP).

Ability to plan, execute, and manage the technical scope, and support leadership planning.

Experience with Agile and working in a cross-function Scrum team.

Working knowledge of Object-Oriented Analysis and Design principles

Experience developing complex software solutions using C++

Experience programming in scripting languages (Python, Bash).

Familiarity with Model-Based Systems Engineering languages (SysML/UML) and concepts

Experience Interpreting complex algorithms and requirements for implementation

Sr. Principal Software Integration Engineer: 08 Years with Bachelor's in related field of study, 06 Years with Masters, 04 Years with PhD or 04 additional years in lieu of a degree.

US Citizenship with Active DoD Secret clearance with a reinvestigation date occurring in the last 6 years.

Ability to obtain Special Program Access (SAP).

Ability to plan, execute, and manage the technical scope, and support leadership planning.

Experience with Agile and working in a cross-function Scrum team.

Working knowledge of Object-Oriented Analysis and Design principles

Experience developing complex software solutions using C++

Experience programming in scripting languages (Python, Bash).

Familiarity with Model-Based Systems Engineering languages (SysML/UML) and concepts

Experience Interpreting complex algorithms and requirements for implementation

Preferred Qualifications:

Bachelor's degree or higher in Science, Technology, Engineering, and Mathematics (STEM)

Experience with the Atlassian Tool Suite including Jira and Confluence

Proficient with DOORS, Cameo with the ability to write and decompose system requirements

Ability to evaluate risks and tradeoffs and present solution options to management

#SentinelSoftware
Primary Level Salary Range: $98,400.00 - $163,200.00Secondary Level Salary Range: $122,800.00 - $203,600.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

Client-provided location(s): Roy, UT

Job ID: NorthropGrumman-R10228241

Employment Type: OTHER

Posted: 2026-04-05T20:16:23