Sr Principal Software Engineer - DevOps (Melbourne)

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 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.

Sr Principal Software Engineer – DevOps

Location: Melbourne, Florida (onsite).

Accomplish

This is a vital position in support of critical software design and development. Candidate will be responsible for leading a diverse skillset software engineering team to refactor existing monolithic codebase into micro-service compliant architecture.

Essential Functions

• Design, develop, and maintain full-stack C#/.NET applications, including backend APIs and user-facing UI Blazor
• Refactor existing monolithic codebases into micro-service architectures using domain-driven design principles.
• Implement and manage core infrastructure services (e.g., DNS, DHCP, NAS, and Active Directory)
• Understand and troubleshoot networking fundamentals (VLANs, firewalls, routing, load‑balancing) that affect service connectivity and collaborate with network engineers as needed.
• Participate in Agile ceremonies, mentor junior developers, and promote best‑practice coding, DevOps and Software Engineering standards.

Succeed

The individual we seek will be self‑motivated, proactive, goal‑oriented to help us grow our services, become even better at what we do and will possess the following qualifications.

Basic Qualifications

• Bachelor’s Degree in a Science, Technology, Engineering or Mathematics (STEM) discipline from an accredited university and at least 8 years’ relevant experience, or STEM Master’s degree with 6 years’ relevant experience, or a STEM PHD with 4 years’ relevant experience.
• Proven experience developing software with C#/.NET?Core; experience in at least one additional language (C/C++, Python, Java) is a plus.
• Hands‑on experience building full‑stack applications, including UI frameworks (React, Angular, Blazor) and RESTful or gRPC services.
• Proficiency with databases and APIs.
• Solid understanding of networking concepts (TCP/IP, VLANs, firewalls, cloud networking) to diagnose connectivity issues.
• Must have an active in scope government Secret security clearance (with a background investigation completed within the last 6 years).

Preferred Qualifications

• Demonstrated success refactoring monolithic applications into micro‑service architectures.
• DoD 8570/8140 IAT Level II or higher (ex. Security+ w/CE)
• Experience working in Agile/Scrum environments and leading sprint planning or retrospectives.
• Familiarity with development tooling such as Git, CMake, Visual Studio, and Visual Studio Code.
• Experience with performance profiling, automated testing frameworks, and security scanning tools.
• Background in hardware‑software integration or rapid prototyping projects.
• Proven ability to work both independently and as a mentor/leader within a team.
• Excellent written and verbal communication skills.

Thrive with Us

At Northrop Grumman we are invested in the growth and well‑being of all our employees. We offer flexible work arrangements, phenomenal learning opportunities, exposure to a wide variety of projects and customers, and a very friendly team environment.

Our Total Rewards Program offers a comprehensive employee benefits package, including a Retirement and Savings Plan, group medical, dental and vision coverage, life and disability insurance, and flexible spending accounts.

Salary and Benefits

Primary Level Salary Range: $122,800.00 – $184,200.00

The 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.

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 U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.