Sentinel Principal​/Sr Principal Software Integration Engineer

RELOCATION ASSISTANCE:
Relocation assistance may be available

CLEARANCE REQUIRED FOR START:
Yes

CLEARANCE TYPE:
Secret

TRAVEL:
Yes, 10% of the Time

At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems in air and space that impact people’s lives around the world today, and for generations to come. Our work preserves freedom, democracy, and advances human discovery and our understanding of the universe. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future and have a lot of 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.

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 position’s 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.

• 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, Git Hub Actions, Git Lab 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

• 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, Test Stand, 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

• 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, clear communication with electrical engineers, firmware developers, and QA testers, documentation discipline

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++ and 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…