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RTX
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October 2, 2026
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Software Test Engineer I

Andover, MA
Full-time
Onsite
$57K/yr - $109K/yr
Entry Level
RTX is an aerospace and defense company developing technologies for a safer, more connected world. The Software Test Engineer I will develop and integrate software applications and automated test environments for mission-critical defense systems, interface software with specialized hardware, and support testing across the product lifecycle.
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Responsibilities

  • Design, code, and integrate object-oriented software applications and test software targeting Windows operating platforms
  • Develop and derive system-level software requirements, operational specifications, and architectural designs
  • Troubleshoot, debug, and optimize software applications to ensure rigorous test accuracy, repeatability, and reliability
  • Collaborate closely with systems, electrical, and mechanical engineers to integrate software test tools with specialized hardware instrumentation
  • Participate actively in formal design reviews, code peer reviews, and technical defect resolution
  • Work within structured engineering frameworks applying both Agile and Waterfall development lifecycles

Qualification

Required

  • 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
  • Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date
  • Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM) discipline. Degree must be obtained by start date
  • Experience developing, testing, or integrating software applications using one or more programming languages, such as C, C++, C#, Python, or Visual Basic (VB/VBA/.NET)
  • Experience developing, building, and debugging software applications targeting Windows operating systems using the Microsoft Visual Studio integrated development environment (IDE)
  • Experience may be obtained through on-the-job experience, research, coursework, or projects

Preferred

  • Demonstrated foundation in software development principles and Object-Oriented Design (OOD/OOP), including encapsulation, inheritance, polymorphism, and modular class structure
  • Experience or coursework utilizing C# or modern C++ in an engineering or laboratory test setting
  • Familiarity with hardware/software interfacing, test automation frameworks, or instrumentation control (e.g., via GPIB, Ethernet, or serial interfaces)
  • Hands-on exposure to version control tools (such as Git) and Agile software development practices
  • Strong diagnostic and analytical problem-solving skills applied to complex software/hardware integration issues

Benefits

  • Relocation Eligibility
  • Hired applicants may be eligible for medical benefits, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for dental benefits, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for vision benefits, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for life insurance, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for short-term disability, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for long-term disability, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for a 401(k) match, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for flexible spending accounts, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for flexible work schedules, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for an employee assistance program, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for the Employee Scholar Program, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for parental leave, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for paid time off, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • Hired applicants may be eligible for holidays, subject to the specific business unit and whether the position is covered by a collective-bargaining agreement.
  • 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. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.
RTX operates as an aerospace and defense company as it solves the hardest problems in aerospace and defense.
Glassdoor
3.7
Founded in 2020
Arlington, Virginia, USA
10001+ employees
http://rtx.com/