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Senior Software Engineer

Job in Merrimack, Hillsborough County, New Hampshire, 03054, USA
Listing for: Elbit Systems of America, LLC
Full Time position
Listed on 2026-10-31
Job specializations:
  • Software Development
    Software Engineer, Software Testing, Embedded Software Engineer
Salary/Wage Range or Industry Benchmark: 115000 - 170000 USD Yearly USD 115000.00 170000.00 YEAR
Job Description & How to Apply Below

Job Summary:

The Senior Software Engineer supports the design, development, integration, and sustainment of software for Active Protection Systems (APS) programs operating in a classified environment. This role contributes across the full software lifecycle, including requirements analysis, software design, implementation in C/C++, integration with hardware and systems, and verification/validation activities. The engineer collaborates with internal teams and external customers to support requirement refinement, prototype development, and delivery of mission-critical APS capabilities.

Responsibilities

and Tasks:
  • Provides software engineering input to the APS product team through development, testing, and validation activities.
  • Develops and maintains C/C++ applications and embedded software for new features, system upgrades, and end-of-life replacements.
  • Supports interpretation and implementation of internal and external customer application requirements.
  • Reviews and becomes familiar with existing codebases, including subcontractor or partner-developed modules.
  • Writes high-quality, maintainable source code within established deadlines.
  • Performs unit testing and integration testing prior to release.
  • Troubleshoots reported issues, identifying root causes and implementing corrective actions.
  • Identifies, documents, and proposes solutions for software defects.
  • Contributes to development and execution of test plans, procedures, and verification reports for qualification and acceptance testing.
  • Supports laboratory testing on breadboards, mock-ups, and system integration test setups.
  • Creates and maintains task lists and engineering documentation.
  • Assists with system integration, field testing, and system-level troubleshooting.
  • Collaborates closely with systems, hardware, electrical, and test engineering disciplines.
Education, Experience, License, or Certification:
  • Bachelor’s degree in Engineering, Computer Science, or related technical field
  • 5 or more years of related experience
  • Experience with C/C++ and Python software development
  • Candidate must hold or be able to obtain a SECRET security clearance
  • Experience in embedded, real-time, or hardware-adjacent software environments preferred
  • Experience working in classified or defense environments is a plus
  • Experience supporting integrated hardware-software systems beneficial
Skills and Abilities:
  • Proficient in software development processes including requirements, design, implementation, and test.
  • Strong understanding of software development life cycles and structured engineering processes.
  • Solid understanding of interactions between software and hardware components.
  • Strong written and verbal communication skills.
  • Ability to work effectively in a classified environment following security procedures.
Travel/

Physical Requirements:
  • Required (approximately 15%), including international travel.

#LI-AV1

Position Requirements
10+ Years work experience
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