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Added 8 mins ago
M
Principal Software Engineer
Microsoft
WA · NY · CA · Redmond, WA · Mountain View, CA · Sunnyvale, CA · Redmond · New York · Mountain View · Sunnyvale
- $142,800 to $304,200 USD / year
As a Principal Software Engineer, on the Substrate Application Platform team, you will help build the next generation platform for internal and external developers and agents to access M365…
Added 9 mins ago
M
Principal Hardware Engineer
Microsoft
WA · CA · OR · NC · TX · Redmond, WA · Mountain View, CA · Hillsboro, OR · Raleigh, NC · Austin, TX · Redmond · Mountain View · Hillsboro · Raleigh · Austin
- $142,800 to $304,200 USD / year
…layers, and converting the result into a permanent fix, runbook, test or automated…
Added 9 mins ago
M
Senior Hardware Engineer
Microsoft
CA · WA · TX · NC · OR · Mountain View, CA · Redmond, WA · Austin, TX · Raleigh, NC · Hillsboro, OR · Mountain View · Redmond · Austin · Raleigh · Hillsboro
- $119,800 to $261,000 USD / year
Develop world-class at-scale debug methodologies, diagnostic strategies, validation techniques, and automated test routines for datacenter systems.
Added 29 mins ago
Early-Career R&D Electrical Engineer - System Test and Integration, Onsite
Sandia National Laboratories
Albuquerque, NM
Design and Innovate: Create and test electrical circuit boards, sub-components, cables, and other automated tester hardware to meet rigorous performance standards.
Added 40 mins ago
Full Stack Application Engineer
CACI International
Laurel, MD
…challenges? CACI is seeking a skilled and motivated Application Engineer to join our team in Laurel, MD. In this role, you will help modernize and enhance critical intelligence systems by…
Added 40 mins ago
Lead DevSecOps Engineer
Leidos
Gaithersburg, MD
Leidos is seeking a Lead DevSecOps Engineer to join the Air Traffic Business Area within the Homeland Sector, supporting the development of the Leidos Common Automation Platform (L-CAP).…
Added 40 mins ago
Senior Cloud Engineer
CACI International
Bethesda, MD
CACI is seeking a hands-on Senior CloudDoors Engineer to sustain and enhance CloudDoors, an existing enterprise cloud provisioning and governance service supporting mission customers. This…
Added 40 mins ago
Principal/Senior Principal Electronics Engineer
Northrop Grumman
Baltimore, MD
This Principal / Senior Principal Electronics Engineer position requires hands-on experience troubleshooting complex systems, experience working with Test and Measurement equipment, and…
Added 54 mins ago
Senior Cyber Platform Engineer
MetLife
Cary, NC
The Cyber Platform Engineer is responsible for designing, implementing, and supporting enterprise security solutions within MetLife’s environment. This hands-on role partners with…
Added 54 mins ago
Senior Embedded Systems Verification Engineer
Eaton Corporation
Raleigh, NC
Develop and execute manual and automated test cases to validate embedded firmware functionality, performance, and load requirements.
Added 55 mins ago
EG
QA Automation Engineer
Eliassen Group
Raleigh, NC
- $75 to $82 USD / hour
Develop, document, and maintain functional test cases and test artifacts such as test data, data validation, and automated scripts.
Added 1 hour ago
EG
QA Automation Engineer
Eliassen Group
Montpelier, VT
- $75 to $82 USD / hour
Develop, document, and maintain functional test cases and test artifacts such as test data, data validation, and automated scripts.
Added 1 hour ago
Process Control Engineer - Control Systems (53405)
Chevron Phillips Chemical
Orange, TX
Chevron Phillips Chemical is seeking a Process Control Engineer to join our Southeast Texas Chemical Complex (STCC) manufacturing Polyethylene facility located in Orange, Texas. This role…
Added 1 hour ago
T
Senior Desktop Test Automation Engineer
TEKsystems
Round Rock, TX
- $55 to $60 USD / hour
Dell is seeking a Senior Desktop Test Automation Engineer / SDET to own and architect automated testing for Elevation Builder, a Windows desktop application used by Dell's pre-sales…
Added 1 hour ago
Digital S/W Eng Intm Analyst - Officer
Citigroup
Irving, TX
The Digital S/W Engineer Intmd Analyst is a developing professional role. Deals with most problems independently and has some latitude to solve complex problems. Integrates in-depth…
Added 1 hour ago
C
Java Full Stack Engineer with Spring boot/AWS Experience
Cognizant
Austin, TX
- $86,000 to $99,000 USD / year
As a Java Full Stack Engineer with Spring boot/AWS exp, you will make an impact by designing and delivering scalable, cloud-native healthcare payer applications that improve payment…
Added 1 hour ago
C
AI Data Engineer
Cognizant
Austin, TX
- $100,000 to $115,000 USD / year
As an AI Data Engineer, you will make an impact by designing, building, and optimizing scalable cloud-native data engineering solutions that enable advanced AI-driven applications and…
Added 1 hour ago
C
AI Data Engineer
Cognizant
Austin, TX
- $100,000 to $115,000 USD / year
As an AI Data Engineer, you will make an impact by designing, building, and optimizing scalable cloud-native data engineering solutions that enable advanced AI-driven applications and…
Added 1 hour ago
VI
Staff Embedded Software Engineer - 5G Devices & NTN Connectivity
Viasat, Inc.
Carlsbad, CA · Germantown, MD
- $205,000 to $307,000 USD / year
Develop automated test frameworks and validation solutions for software platform verification.
Added 1 hour ago
VI
Staff Engineer - Terminal Software
Viasat, Inc.
Carlsbad, CA · Germantown, MD
- $205,000 to $307,000 USD / year
We are seeking a Staff Engineer - Terminal Software to provide technical leadership across our embedded software portfolio. In this role, you will influence software architecture,…
Added 2 hours ago
ASIC Verification Engineer
LSI Corporation
United States
We are seeking a highly skilled ASIC Verification Engineer to design, implement, and maintain advanced verification infrastructure across our diverse portfolio of ASIC products. In this…
Added 2 hours ago
ASIC Emulation & Verification Engineer
LSI Corporation
United States
Job Title: ASIC Emulation & Verification Engineer (Palladium Specialist)
Added 2 hours ago
ASIC Emulation and Verification Engineer
LSI Corporation
United States
Job Title: ASIC Emulation & Verification Engineer (Palladium Specialist)
Added 2 hours ago
Machine Learning Engineer
Raydar
San Francisco, CA
…training, experiment design and evaluation. The role suits an engineer who can move quickly, test ideas rigorously and extend the product into new building…
Added 3 hours ago
IT Security Engineer
CoolSys
UNAVAILABLE
We are seeking a mid-level Security Engineer to support security operations across a geographically distributed, multi-architecture environment. This role is intended for an engineer with 4…

RTX

Senior Principal Software Engineer - Core Services and Libraries (Onsite)

United States

The salary range for this role is 132,400 USD - 251,600 USD.

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Job details

Pay: The salary range for this role is 132,400 USD - 251,600 USD.
Posting language: English
Posted: Nov 5, 2026

Original job description

Date Posted:

2026-11-05

Country:

United States of America

Location:

US-AL-HUNTSVILLE-382 ~ 420 Jan Davis Dr ~ DAVIS 382

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.

Security Clearance Type:

None/Not Required

Security Clearance Status:

Not Required

Design the Foundation of Next-Generation Avionics

Join the growing Collins Aerospace Core Systems and Libraries team and play a key role in shaping the software foundation that powers modern aircraft. We are seeking a Principal Software Engineer who thrives on solving complex technical challenges and driving high-impact solutions across safety-critical systems.

In this role, you will lead the architecture and development of core software components, libraries, and tools that enable scalable, certifiable avionics platforms. You’ll work across the full software lifecycle, partnering with cross-functional teams to deliver high-quality solutions aligned with civil and military certification standards.

This is a unique opportunity to influence system-level design, advance open architecture initiatives, and contribute to technologies that define the future of aerospace.

Location: Onsite in Huntsville, AL

What You Will Do

Lead the architecture and design of core software components, libraries, and tooling aligned to avionics system requirements
Drive technical direction and execution across development and verification activities for safety-critical software (DO-178)
Define and manage software requirements, decomposition, and traceability across complex systems
Develop and verify software using modern C++ and object-oriented design principles
Own and produce DO-178 certification artifacts, including DAL-A deliverables
Lead and support certification efforts, including engagement with customers and regulatory authorities
Conduct and contribute to peer reviews to ensure quality, consistency, and compliance across the lifecycle
Collaborate cross-functionally with engineering, program leadership, and customers to align technical solutions with program objectives
Willing and Able to travel as required (domestic and international <10%).

What You Will Learn

Gain hands-on experience with cutting-edge and emerging technologies that are shaping the future of avionics and aerospace systems
Build end-to-end expertise across the full product lifecycle, from requirements and design through verification and delivery of safety-critical systems
Develop a deep understanding of software certification (DO-178) and how world-class avionics products meet rigorous regulatory standards
Learn how to design, scale, and sustain software product lines that support a wide range of platforms and global customers

Qualifications You Must Have

Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience.
Experience designing and developing software architecture, libraries, or platform-level components within an aerospace or safety-critical environment.
Experience leading technical execution of projects, including customer engagement and presenting to senior stakeholders.
Experience working across cross-functional engineering and program teams to deliver complex, integrated solutions.

Qualifications We Prefer

Hands-on experience supporting DO-178 software development and certification activities (e.g., requirements, verification, or certification artifacts)
Experience with C++ and VxWorks.
Experience writing High-Level and Low-Level Requirements.
Experience writing Test Cases and Automated Test Procedures.
Experience with Civil Certification DO-178 – DAL A preferred.
Experience with design and development of Flight Management Systems, Software, Aircraft Applications or Middleware.
Familiar with revision control concepts and tools (e.g. GIT, Subversion, JIRA).

What We Offer

Medical, dental, and vision insurance
Three weeks of vacation for newly hired employees
Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option
Tuition reimbursement program
Student Loan Repayment Program
Life insurance and disability coverage
Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection
Birth, adoption, parental leave benefits
Ovia Health, fertility, and family planning
Adoption Assistance
Autism Benefit
Employee Assistance Plan, including up to 10 free counseling sessions
Healthy You Incentives, wellness rewards program
Doctor on Demand, virtual doctor visits
Bright Horizons, child and elder care services
Teladoc Medical Experts, second opinion program
And more!

This role is eligible for relocation.

Learn More & Apply Now!

Avionics delivers advanced cockpit displays, vision systems, and comprehensive digital solutions for global government, commercial and business aviation customers. We provide connectivity and managed data services to ensure safety and seamless communication for passengers, crews, and militaries, from aircraft and airports to air traffic management. Join us in creating solutions that connect the world, one flight at a time. Start your application today.

Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other -- propel us all higher, again and again.

Apply now and be part of the team that’s redefining aerospace, every day.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 132,400 USD - 251,600 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.

Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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More about this job

Skills

C++
Design principles
Regulatory compliance
Leadership
Software development
Test procedures
IBM Middleware
Atlassian JIRA

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