Principal Avionics Software Engineer - GNSS (ONSITE)

RTX (Raytheon); Melbourne (FL); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Three weeks vacation

401(k) matching

Life insurance

Tuition reimbursement

Student loan repayment

Job summary

RTX in Melbourne, FL, is seeking an experienced embedded software engineer to design, implement, and verify avionics navigation software. The role emphasizes DO-178C DAL A development, GNSS algorithms, and end-to-end system integration.

You will work onsite with cross-functional teams to ensure safety-critical compliance and robust performance across the navigation stack. Ideal candidates have a strong C/C++ background, Python scripting skills, and hands-on test automation experience in avionics

Qualifications

• Degree in science, technology, engineering or mathematics with 8+ years of relevant experience or an advanced degree with 5+ years.
• Authorized to work in the U.S. without sponsorship now or in the future.
• Experience with embedded C/C++ and Python scripting required.
• Experience in test automation and integration for avionics systems.

Responsibilities

• Design, implement, integrate, and test embedded software for avionics navigation systems.
• Develop verification plans and test cases for GNSS algorithms and integrity monitoring.
• Perform unit, integration, and system level verification per DO-178C DAL A.
• Collaborate with navigation, systems, and hardware teams to ensure end-to-end performance.
• Support certification activities and generate verification artifacts.

Skills

Embedded C/C++

Python scripting

Test automation

DO-178C DAL A

Requirements management

GNSS navigation

Communication skills

Education

Bachelor's degree in STEM

Advanced degree (preferred)

Tools

LDRA

VectorCast

SVN

Jira/Jama

Job description

Date Posted: 2026-09-14

Country: United States of America

Location: US-FL-MELBOURNE-312 ~ 795 W Nasa Blvd ~ BLDG 312

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: Must be authorized to work in the U.S. without the company's immigration sponsorship now or in the future. The company will not offer immigration sponsorship for this position. The company will not seek an export authorization for this role.

Security Clearance Type: None/Not Required

Security Clearance Status: Not Required

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

What You Will Do:

• Design, implement, integrate, and test embedded software for advanced avionics navigation systems.
• Develop and execute verification plans, procedures, and test cases for GNSS algorithms, navigation functions, and integrity‑monitoring software.
• Perform requirements‑based verification at the unit, integration, and system levels.
• Apply automation, scripting, and GenAI‑enhanced tools to improve verification quality and efficiency.
• Maintain full requirements, design, code, and test traceability per DO‑178C DAL A standards.
• Participate in formal engineering reviews, including requirements, design, code, and test readiness reviews.
• Collaborate with navigation algorithm, systems, and hardware engineering teams to ensure robust end‑to‑end system performance.
• Support certification activities, including documentation, audits, and generation of verification artifacts for airworthiness approval.

What You Will Learn:

• Develop deep expertise in GNSS, including GPS signal structures, tracking algorithms, navigation filters, and PNT system performance.
• Gain hands‑on experience in jamming/spoofing detection, RF threat analysis, and resilient navigation techniques.
• Learn DO‑178C DAL A development and verification practices for safety‑critical avionics.
• Build technical leadership capabilities in advanced navigation and avionics systems.

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience
• Must be authorized to work in the U.S. without the company's immigration sponsorship now or in the future. The company will not offer immigration sponsorship for this position. The company will not seek an export authorization for this role
• Experience with embedded C/C++ software development and proficiency in Python scripting are required.
• Experience in test automation and integration.
• Strong background in developing test plans, procedures, and performing software integration testing for avionics systems.
• Familiarity with test management, defect tracking, and requirements management tools.
• Ability to interpret requirements, create test cases, and analyze test results.
• Strong communication, analytical, and problem‑solving skills.

Qualifications We Prefer:

• Full life‑cycle software development experience, from requirements through integration and testing.
• Experience leading local and offshore software development and verification teams.
• Working knowledge of GNSS navigation products.
• Experience with GNSS simulators and scenario development.
• Knowledge of ARINC 429, DO‑330, and DO‑178C.
• Experience with timing analysis, memory and stack usage analysis, and structural coverage.
• Experience using LDRA or VectorCast for structural coverage analysis.
• Working knowledge of SVN and Atlassian tools (e.g. Jira, Jama).

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 disa