Sr Software Engineer (Onsite)

Date Posted:

2026-08-19

Country:

United States of America

Location:

US-MD-FULTON-8170 ~ 8170 Maple Lawn Blvd ~ MAPLE LAWN, Ste 190, 200 & 300

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.

Solipsys, Managed by Collins Aerospace

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. 

Solipsys is a wholly owned subsidiary of Collins Aerospace/RTX and is currently seeking a Principal Software Engineer who is enthusiastic, hardworking, and proactive in writing and developing code using programming languages and related technologies such as Java, C++, Angular, GraphQL, REST, KafKa, and Typescript (among many others).  The successful candidate will work in an exciting environment, directly driving the design, architecture, and development of new software systems and products utilizing these technologies.

Solipsys is an industry leader in the development of command and control software systems and operates in a dynamic, complex, fast-paced business environment with both commercial and Government customers, including a mix of domestic and international pursuits and programs. This is an onsite role at our Fulton MD facility

What You Will Do

• Design, architect and code critical capabilities in an active Agile environment.
• Develop innovative new features for a new real-time situational awareness Command & Control (C2) systems.
• Work in a highly collaborate team environment to design, architect and innovate software solutions.
• Engage & build positive relationships with both customers as well as internal & external employees.
• Travel to customer sites for demos, integration and support.

Qualifications You Must Have

• Relevant work experience in software development using object oriented programming languages such as Java or C++.
• 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.
• Strong computer science fundamentals such as data structures, algorithms, distributed systems, information retrieval. Relevant work experience with full life cycle development including exposure to software requirements, design, development, debug and test.
• 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

Qualifications We Prefer

• Direct hands on individual experience with GraphQL, REST, Kafka, RabbitMQ, Redis, Postgresql, Docker, Kubernetes, Angular, Typescript, HTML/CSS, among many other programming languages and related technologies.
• Relevant work experience in software development using object oriented paradigms and multithreaded systems.
• Experience with Container Orchestration implementation such as Docker, Kubernetes, OpenShift

*Please ensure the role type (defined below) is appropriate for your needs before applying to this role.

Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the developme