Graduate Software Engineer

Job Description

L3Harris

L3Harris Technologies is the Trusted Disruptor in the defense industry. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting space, air, land, sea and cyber domains in the interest of national security.

L3Harris is dedicated to recruiting and developing diverse, high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

Your new role:

We are seeking Graduate Software Engineers to join our team working on next-generation Information Resilience and Electronic Warfare technology. You will be an integral part of a team involved in the design, development and verification of complete systems of products such as the CATAPAN and Corvus product families, along with other products and systems we develop.

Working with a Technical Lean in Agile sprints, some of your responsibilities will include coding from existing requirements and designs (to begin with) and progressing to updating and developing requirements, design and implementation as you become more proficient. You’ll also learn about our product architectures to build your understanding to apply your own ideas, manage your own time and workload and stay up to date with new technologies, methods and languages using both the L3Harris online resources and publicly available resources.

What you’ll bring:

  • 2:1 or above in Computer Science/Software Engineering or equivalent
  • Experience with C and/or C++ is ideal
  • Additionally, experience with Python, Rust and/or C# is advantageous
  • Experience of object orientated design and implementation principles
  • Appreciation of Continuous Integration and DevOps tools such as GitLab/Jenkins
  • Willingness to learn and tenacious approach to problem solving
  • Strong interpersonal skills and a self-starter – able to work as part of a team as well as using your own initiative
  • A demonstrable passion for technology keeping up to date with latest innovations

What you can expect:

  • Immersive induction into L3Harris – who we are and how we work
  • Technical upskilling through formal training and on the job learning, supported by our in-house experts
  • Structured personal development workshops to support your career progression
  • A dedicated support structure with a peer buddy, your manager, a project mentor and our Early Careers Lead
  • Membership to our internal Early Careers network, Cerebrum, and other Employee Resource Groups to build your community
  • Funded IET membership and the opportunity to work towards professional registration

What we offer

In addition to a competitive salary, we also offer

  • Flexible working hours, with at least 65% of your time in the office
  • 12pm finish on Friday
  • 25 days holiday per year, increasing with long service
  • Free on-site parking
  • Private medical insurance and a health care cash plan
  • Full reimbursement of professional membership cost
  • Cycle-to-work scheme
  • Mental health and wellbeing schemes

Important to know

Due to the nature of our work this role will require UK nationality and the ability to obtain a security clearance. Applicants who accept a conditional offer of employment must meet the requirement of right to work in the UK and must meet eligibility requirements for access to classified information and will be subject to government security checks.

L3Harris Technologies is proud to be an Equal Opportunity Employer. We are committed to maintaining a workplace that is free from unlawful discrimination and offers equal opportunities for all. Applications from individuals are encouraged regardless of age, disability, sex, gender reassignment, sexual orientation, pregnancy and maternity, race, religion or belief, and marriage and civil partnerships.

Posted by: L3Harris TRL Technology Ltd
Salary: Competitive
Closing Date: 31/10/2025
Location: Gloucestershire
Category: Manufacturing & Engineering