Principal Software Engineer - TCMA (Onsite)

RTX (Raytheon); Huntsville (AL); On-site; USD 120,000 - 180,000; Full time

Job summary

RTX in Huntsville, AL, is seeking a Principal Software Engineer for the TCMA team to lead software architecture design and integrate complex features for government platforms in an Agile environment.

You will work on embedded real-time systems, ensure compliance with DoD certification, mentor teammates, and collaborate with cross-functional engineers across avionics to deliver robust radio and surveillance software. This role requires travel up to 10% and DoD clearance eligibility.

Qualifications

• 8+ years of relevant experience or 5+ with advanced degree.
• Must have or be capable of obtaining DoD security clearance.

Responsibilities

• Lead software architecture design for complex government platforms.
• Develop and integrate features in an Agile environment.
• Mentor teammates and participate in design reviews and customer discussions.
• Ensure compliance with DoD certification requirements and standards.
• Collaborate with cross-functional engineers across avionics.
• Travel domestically up to 10%.

Skills

Software architecture

Embedded systems

Real-time OS

Agile development

Team leadership

Communication

Education

BS in STEM

Advanced degree

Tools

LynxOS

PowerPC

C/C++

Job description

Date Posted

2026-10-05

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

The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type

DoD Clearance: Secret

Security Clearance Status

Active and existing security clearance required after day 1

About RTX

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.

About Collins Aerospace

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.

Team Overview

The Tactical, Communications, and Maintenance Applications (TCMA) team based in Huntsville, Alabama has new opportunities for individuals who want to grow their technical expertise on complex programs and be a part of an innovative and fast-paced avionics business area. Teams are composed of cross-functional engineers working in an AGILE environment (approximately 6-10 people) focused on the design and development of software-only products. Our team focuses on creating avionics solutions for both fixed-wing and rotary-wing aircraft, including the integration of various radios and surveillance equipment for domestic and international military customers.

Position Summary

We are looking for a Principal Software Engineer to join our TCMA team in Huntsville, Alabama. The successful candidate will lead software architecture design, develop and integrate complex features and functionality for use on multiple government platforms within an Agile framework.

What You Will Do

• Applies extensive knowledge of military waveforms to create cost effective radio control software architectures.
• Serve as a software architect to capture, analyze, decompose, translate, and create requirements for systems of high complexity including clean sheet designs.
• Lead or review technical proposal preparations and participate as a subject matter expert in internal peer and design reviews, non-advocate, and customer reviews. Assure that development products are designed to meet the applicable Collins, Business Unit, and Customer/Project requirements.
• Applies extensive software engineering technical expertise to development teams within an Agile framework.
• Fully leverages different /opposing points of view to support business strategies and emerging priorities.
• Develop and maintain incremental plans for the team to meet program milestones.
• Hands-on capabilities in both embedded systems and hosted application software development.
• Demonstrated experience with real-time, multi-threaded embedded systems applications development is highly desired especially with LynxOS and PowerPC architectures.
• Responsible for team performance against scope, schedule, and budget.
• Proactively identify and resolve impediments to enable full productivity.
• Present and support technical discussions for both internal and external stakeholders.
• Ensure development team maintains compliance with certification requirements.
• Rewards people when they have done well and confront them directly with specific feedback when they don't demonstrate desired performance.
• Empowers others to achieve desired results and holds them accountable.
• Represents needs of customers during internal meetings to develop plans that will add value to the business and meet customer expectations.
• Focuses on assigning individuals to projects that will further develop their talent or skills.
• Is a confident presenter, articulates ideas clearly and answers questions directly in both small and large group settings.
• Considered an expert on company, industry practices and standards. Be aware of emerging industry trends relative to operating systems, processors, modeling, simulation, and development platforms. Lead Continuous Improvement projects that result in new approaches and techniques to product development. Identify gaps in technical knowledge, create training to close gaps.
• Ability to travel domestically (up to 10%).

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 have or be capable of obtaining a US Department of Defense (DoD) security clearance after