Software Engineer-Developer 4

Apex Systems

Oklahoma City (OK)

Hybrid

USD 110,000 - 150,000

Full time

23 hours ago
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Job summary

Apex Systems seeks a Software Engineer-Developer 4 in Oklahoma City to design, develop, and test embedded real-time software for defense programs. You will work in an agile lab, interfacing with aircraft hardware and contributing to software lifecycle activities.

The role is hybrid with possible onsite work in Oklahoma City and periodic travel. A bachelor’s degree and 8+ years in embedded development are required, with Ada proficiency and Agile experience being essential.

Qualifications

  • Bachelor's degree in engineering, computer science, mathematics, physics, or chemistry required.
  • 8+ years of experience in embedded (real-time) software development.
  • Proficiency in Ada and experience with Agile development practices required.

Responsibilities

  • Design, develop, and test software components and functions.
  • Support the development of software functional requirements.
  • Support software architecture trades and revise existing architecture.
  • Specify internal and external software interfaces.
  • Conduct software test-driven development.
  • Conduct and support peer reviews on all software life cycle data.
  • Contribute to the success of an Agile development team.
  • Support sprint planning and meet sprint commitments.

Skills

Ada
Agile
Embedded real-time

Education

Bachelor's degree in engineering, computer science, mathematics, physics, or chemistry

Job description

Job#: 3046945

Software Engineer-Developer 4

Location: Oklahoma City, Oklahoma (Hybrid)

Role Overview

Our organization is seeking qualified software engineers to develop solutions in a defense and security environment. This role involves working in an agile, collaborative setting with current software development tools to support development and integration tasks. The position requires engagement with a high-fidelity lab environment for troubleshooting, working directly with aircraft hardware.

Key Responsibilities
  • Design, develop, and test software components and functions.
  • Support the development of software functional requirements.
  • Support software architecture trades and revise existing architecture.
  • Specify internal and external software interfaces.
  • Conduct software test-driven development.
  • Conduct and support peer reviews on all software life cycle data.
  • Contribute to the success of an Agile development team.
  • Support sprint planning and meet sprint commitments.
Required Qualifications

Education: A bachelor's degree or higher in engineering, computer science, mathematics, physics, or chemistry is required.

Experience: This position requires 8+ years of experience in embedded (real-time) software development.

Technical Skills: Proficiency in Ada and experience with Agile development practices are required.

Preferred Qualifications
  • Previous technical experience in an aerospace environment.
  • Proficiency in the design and implementation of multi-threaded real-time applications.
  • A self‑motivated problem solver, capable of taking initiative with minimal instruction.
  • Ability to problem-solve in a clear and concise manner.
  • Possesses strong communication skills.
Work Environment

This is a full‑time, first‑shift position with flexible start and end times between 9 a.m. and 3 p.m. to complete a full 8‑hour day. The role is hybrid, with a preference for candidates who can be onsite in Oklahoma City as needed. Candidates not local to Oklahoma City must be comfortable traveling to the site periodically. An initial onsite training period may be required.

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [email protected] or 844-463-6178.

© 2026 Everforth, Inc. All rights reserved.

Everforth Apex Systems is part of the Commercial Segment of Everforth, Inc.

NYSE: EFOR

4400 Cox Road

Suite 200

Glen Allen, Virginia 23060

Everforth Apex is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228.

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