C5I Software Engineer II

RTX • Tewksbury, MA

10d • Onsite

About The Position

At RTX, the world 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. Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. We are seeking a Software Engineer II to support the C5I (Command, Control, Communications, Computing, Cyber and Intelligence) product line within the Missile Defense Sensors (MDS) Software Department. The MDS mission is to deliver world-class radar and Command and Control (C2) software for our customers’ wide array of surveillance and warning systems. Our C5I teams work across technologies including C++, Java, JavaScript/TypeScript, Lua, C#, and Python, delivering Linux services, microservices, REST APIs, Windows front-end applications, and HTML/TypeScript UIs. We operate using Agile and DevSecOps principles, enabling high-frequency, high-quality deployments across the value stream. The ideal candidate has a strong foundation in software development, works well in team environments, and is eager to grow their skills building complex, real-time, mission-critical systems. This position is located onsite in Tewksbury, Massachusetts.

Requirements

• Typically requires a Bachelor's of Science Degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 2 years of prior relevant experience unless prohibited by local laws/regulations.
• Experience with one or more programming languages such as Java, C++, JavaScript/TypeScript, Lua, C#, or Python, with the willingness to learn others.
• Experience developing software in a team-based Agile environment.
• Ability to obtain U.S. government issued Secret security clearance is required after start date.
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Nice To Haves

• Experience with CI/CD tools (e.g., Jenkins), version control and configuration management tools (e.g., Git, Bitbucket, Artifactory), and scripting or data tools (e.g., Python, MATLAB).
• Knowledge of data structures, algorithms, memory management, and multithreaded programming.
• Exposure to C5I/Command-and-Control environments, such as Link16, HMI development, or Mission Defense Planning.
• Familiarity with large, complex systems like ADOC C5I or NASAMS.
• Strong communication, documentation, and presentation skills.
• Ability to work in a fast-paced, dynamic environment with time-critical deadlines.
• Experience collaborating in teams to develop creative solutions to technical challenges.
• Interest in continuous learning, cross-team collaboration, and participating in shared training opportunities.
• Strong communication and collaboration skills.
• Ability to follow established development processes and work effectively on well-defined tasks.

Responsibilities

• Assist with the requirements, design, development, and testing of software features across Linux services, microservices, REST APIs, and UI components.
• Develop and maintain software in languages such as C++, Java, JavaScript/TypeScript, Lua, C#, and Python as part of a multi-language, full-stack environment.
• Implement updates and enhancements to existing components to improve performance, maintainability, and reliability.
• Participate in internal reviews of software components—design reviews, code reviews, and test readiness reviews.
• Contribute to testing frameworks, unit testing, and CI/CD-driven software integration to enable consistent, high-quality deliveries.
• Work on tasks with clearly defined scope, schedule, and expectations while following established development processes and coding standards.
• Collaborate with Systems Engineering, Integration & Test, and other stakeholders to ensure proper integration and alignment.

Benefits

• 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.
• 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees