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Principal Software Engineer - Contractor

Leonardo DRS
Bridgeton, MO Contractor
POSTED ON 5/7/2026
AVAILABLE BEFORE 6/4/2026
Job ID: 114360

The Leonardo DRS Land Systems business is a recognized leader in the design and integration of complex technologies into new and legacy systems and platforms for global military and commercial customers. We are a 5 year running Top Workplace in the Greater St. Louis area.

Job Summary

Leonardo DRS Land Systems is seeking a Principal Software Engineer Contractor for our Bridgeton, MO facility. This role will be responsible for the design, development, analysis, testing and debugging of computer software applications and/or systems. This contract is expected to last between 90-180 days, with the ability to extend if needed.

Job Responsibilities

  • Responsible for driving technology and completion of activity on time and budget
  • Design, develop, analyze, document and support testing of products, systems or subsystems
  • Ability to complete a technical project independently
  • Mentor and coach other engineers.
  • Review customer specifications and requirements, and develop designs to best support them, including cost as a key design variable
  • Provide budget, cost and schedule input for design assignments
  • Document component and subsystem specifications and material requirements
  • Analyze designs as necessary
  • Specify and evaluate supplier components, subsystems and services
  • Support the program design to cost and design for manufacture requirements
  • Develop prototypes to retire key development risks
  • Communicate clearly (written and oral) with manufacturing, supply chain, program management and the customer as required
  • Participate heavily in preparation of the more complex and significant proposals
  • Provide technical expertise and assistance to other engineers and support personnel
  • Interact with technical management, other professionals, technicians and support personnel to coordinate, recommend and confer regarding technical activities and progress
  • Support, communicate, reinforce and defend the mission, values and culture of the organization
  • Attend appropriate engineering, customer or business meetings
  • Mentor and coach less-experienced engineers
  • Involved with the design, development, analysis, testing and debugging of computer software applications and/or systems. May include Image and Signal Processing, Real-time, Firmware, Nuclear/Hi-Rel, FAA Certified, Database Design, Operating Systems, Operator/Machine Interface, or others. Develop software tools including operating systems, compilers, routers, networks, utilities, databases, and Internet-related tools. Determine hardware compatibility. Complete documentation and procedures for installation and maintenance. Interact with users to define system requirements and/or necessary modifications

Qualifications

  • Bachelor’s degree in Computer Science, Computer Engineering or related technical field with a minimum of 8 years of experience
  • Proven Computer Science fundamentals in algorithm design, problem solving, and complexity analysis
  • Experience in delivering high-quality, innovative applications and programming experience in one or more of the following: C, C , C# and/or Java
  • Practical experience working with embedded hardware
  • Experience in Object Oriented design and development
  • Ability to write detailed design documents incorporating UML techniques
  • Experience following formal software development processes
  • Experience with Linux/Unix and/or Windows
  • Experience with software version control systems (preferably GIT)
  • Mastery of technologies and domain knowledge
  • Expected to have knowledge and significant experience in multiple engineering disciplines

The salary range for this position is $116,811.00/year- $157,695.00/year for the state of Illinois. This range reflects the good faith estimate of pay the employer is willing to offer at the time of posting. Several factors can influence the pay scale, including but not limited to: Federal contract labor categories and contract wage rates, collective bargaining agreements, geographic location, business considerations, scope, and responsibilities of the position, local or other applicable market conditions, and internal equity. Other factors include the candidate’s qualifications such as prior work experience, specific skills and competencies, education/training, and certifications. In addition to base pay, employees may be eligible for: annual performance-based bonuses, equity awards, and overtime pay (for non-exempt employees as applicable. Our benefits package includes comprehensive health insurance (medical, dental, vision), employer matching 401(k) retirement plan, paid time off including vacation, holidays, and sick leave (including ant state-mandated paid sick leave), parental leave benefits, tuition reimbursement, professional development support, and life and disability insurance coverage.

Taking care of our people is a top priority at Leonardo DRS. We are proud to offer competitive salaries and comprehensive benefits, including medical, dental, and vision coverage, a company contribution to a health savings account, telemedicine, life and disability insurance, legal insurance, and a 401(k) savings plan. We champion wellness programs that focus on physical, emotional, and financial well-being. We develop our talent by offering programs and activities to support career-growth, professional development, and skill enhancement. And we understand there is more to life than work, and the importance of offering flexible work schedules with our 9/80 program, competitive vacation, health/emergency leave, paid parental leave, and community service hours.

  • Some employees are eligible for limited benefits only

Leonardo DRS, Inc. and its subsidiaries provide equal opportunities to all employees and applicants for employment and prohibit discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. #LSY

Salary : $116,811 - $157,695

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