Senior Software Engineer

RTX; Largo (FL); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Three weeks of vacation

401(k) with company match and lifetime

Tuition reimbursement

Student Loan Repayment

Life insurance

Job summary

Collins Aerospace, an RTX company, is hiring a Sr Software Engineer in Largo, FL, onsite. You will participate in cross-disciplinary teams, drive full lifecycle software development, and collaborate with stakeholders to deliver mission-critical aerospace software.

The role emphasizes embedded programming in C++, RTOS, UML/OOA-D, and a path toward DoD security clearance. A STEM degree with 5+ years’ experience is typical; relocation benefits may apply.

Qualifications

• Must be able to obtain and maintain a U.S. government security clearance.
• Experience with software development lifecycle from design to field support.
• Experience with C++ in embedded/real-time environments.
• Background in RTOS, embedded programming, and hardware interfaces.

Responsibilities

• Participate in cross-disciplined integrated product teams using agile techniques.
• Own full lifecycle of software product development from architecture to test and field support.
• Collaborate across disciplines and external stakeholders to meet program objectives.
• Contribute to software engineering process maturity and continuous improvement.

Skills

C++

RTOS

Embedded

Python

Agile/Scrum

DevOps

Jenkins

SysML

OOA/D

Networking

Education

STEM degree

Advanced degree (MS/PhD)

Tools

Jenkins

SysML

CORBA

Job description

Date Posted: 2026-11-05 Country: United States of America Location: US-FL-LARGO-382ST ~ 7887 Bryan Dairy Rd ~ BLDG 400 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 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. Raytheon Company, Managed by Collins Aerospace Collins Aerospace, an RTX company, is a leader in engineering and proposal teams to successfully execute programs and prepare responsive proposals aimed at making the world a safer place. The Strategic Communication Software (SW) Engineering Department has an opportunity for a talented Sr Software Engineer to join our team onsite in Largo Florida. This role requires a security clearance after you start.

What You Will Do

• Participate in collaborative, cross-disciplined integrated product teams, often employing agile software development techniques
• Responsible for the full lifecycle of product development, from architecture and design, through integration, test, and field support
• Work and learn the highest software engineering process maturity level as recognized by the Software Engineering Institute
• Work in a collaborative team environment that requires communication with other engineering disciplines, program, and external stakeholders

Qualifications

• 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.
• Experience in Software Engineering to include experience working various phases of the software development lifecycle.
• Experience with Software Development Using C++.
• Experience with real-time operating systems (RTOS), embedded programming, processor/board architecture and design.
• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of expereince.
• We Prefer Applied experience in Unified Modeling Language (UML) and Object-Oriented Analysis and Design (OOA/D).
• Understanding standard system engineering design artifacts such as Use Cases and SysML diagrams.
• Experience with Agile lifecycle process including Scrum, Continuous Integration, and Test-Driven Development Methodologies.
• Experience with DevOps, Jenkins and automated testing.
• Exposure to Model Driven Development (MDD).
• Exposure to CORBA messaging.
• Experience with TCP/IP, UDP/IP messaging, and client/server architecture.
• Experience with software integration on custom hardware.
• Scripting language (e.g. Python).
• Ability to obtain and maintain a U.S. government issued security clearance is required after start date.
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

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
• 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
• This position is eligible for relocation assistance
• And more!

The salary range for this role is 86,800 USD - 165,200 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.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses - Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.