Sr Software Engineer - Active Secret; Onsite

Date Posted:  Country:
United States of America

Location:

US-IA-CEDAR RAPIDS-179 ~ 855 35

Th St NE ~ BLDG 179 Position Role Type:
Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements:
Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type:
Secret - Current Security Clearance Status:
Active and existing security clearance required on day 1

Joining Collins Aerospace isn’t just about finding a job; it’s about embarking on a journey to redefine the future of aerospace technology. Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market.

We are seeking a highly motivated and experienced Senior Software Engineer with a focus on Mission Engineering to join our team. In this role, you will lead the development of software solutions to support mission‑critical systems and architectures.

• Design, develop, and implement mission‑critical software systems, tools, and applications.
• Perform mission analysis and develop software solutions to model, simulate, and evaluate mission scenarios.
• Collaborate with multi‑disciplinary teams to define software requirements and architecture for mission systems.
• Implement and optimize algorithms for mission planning, decision support, and system performance analysis.
• Develop and maintain software tools for modeling and simulation of mission environments (e.g., AFSIM, RCADE, C++, Python).
• Perform software integration and testing to ensure system functionality and reliability.
• Support software verification and validation efforts to meet mission objectives and requirements.
• Lead trade studies, technical reviews, and risk assessments for software‑focused mission engineering tasks.
• Mentor junior engineers and provide technical leadership in software development and mission engineering.
• Ensure compliance with RTX software engineering processes, cybersecurity standards, and best practices.

• 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 experience.
• Active and transferable U.S. government issued SECRET security clearance is required prior to start date.
• Strong proficiency in programming languages such as Python, C++, or similar.
• Experience with software modeling and simulation tools (e.g., Simulink, STK, or similar).
• Familiarity with software development processes (e.g., Agile, Dev Sec Ops , CI/CD) and tools (e.g., Git, Gitlab, JIRA).
• Ability to obtain and maintain a secret U.S. Government security clearance.

• Advanced degree (Master’s or PhD) in Software Engineering, Computer Science, or a related discipline.
• Experience developing software for aerospace, defense, or mission‑critical systems.
• Strong analytical and problem‑solving skills with a focus on mission‑driven software solutions.
• Excellent written and verbal communication skills.
• Expertise in artificial intelligence (AI), machine learning (ML), or optimization algorithms for mission applications.
• Experience working with model‑based systems engineering (MBSE).
• Previous experience working with government or military customers.
• Demonstrated ability to lead technical teams and manage complex software projects.

• Medical, dental, and vision insurance
• Three weeks of vacation for newly…