Senior Principal Software Engineer

RTXSt Louis, MN
Hybrid

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. Join us and help shape the future of aerospace and defense. For over 70 years, RTX BBN Technologies (BBN) has solved challenging problems through research, exploration, development, and prototyping. Our Intelligent Software & Systems department is seeking qualified applicants to work on forward looking and projects in the areas of distributed systems, artificial intelligence, cyber security, information management, and virtual technologies. Role Overview We are looking for experienced, creative, and highly motivated Sr. Principal Software Engineer who can hit the ground running with development tasks, interact with current customers, contribute to one or more project teams, and contribute to BBN’s growth of current and new research areas. As senior member of the team, responsibilities will also include development and presentation of reports documenting design, test and evaluation and technical results.

Requirements

  • Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 10 years of prior software development experience or an Advanced Degree in a related field and minimum 7 years experience.
  • 10+ years of Java development
  • 10+ years of Python experience
  • Experience interacting with customers, suppliers, and/or other organizations / disciplines.
  • An 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.

Nice To Haves

  • Ability to lead complex development efforts
  • Experience with estimating software tasks for extended periods of time (i.e. longer than 12 months).
  • Android development experience a plus
  • Network programming (e.g., sockets) or computer networking experience a plus
  • JavaScript experience a plus
  • Experience with the Team Awareness Kit (TAK) is a plus
  • AI/ML development skills are a plus

Responsibilities

  • Develop and test software using Java and Python.
  • Lead complex software development efforts and technical solutions.
  • Collaborate with engineers, scientists, customers, and cross-functional teams.
  • Support customer engagements, demonstrations, and technical evaluations.
  • Develop technical documentation and present project results.
  • Estimate development tasks and support long-term project planning.
  • Contribute to new and emerging BBN research areas.

Benefits

  • parental (including paternal) leave
  • flexible work schedules
  • achievement awards
  • educational assistance
  • child/adult backup care
  • medical
  • dental
  • vision
  • life insurance
  • short-term disability
  • long-term disability
  • 401(k) match
  • flexible spending accounts
  • employee assistance program
  • Employee Scholar Program
  • paid time off
  • holidays
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service