Graduate Systems Engineer (Sept 2026)

About this opportunity and L3Harris UK

From 11 UK sites our team of nearly 1000 people delivers unique capabilities across space air land sea and cyber for military security and commercial customers across the UK and worldwide.

L3Harris in Tewkesbury is our HQ for our Intelligence & Cyber International the land domain our T7 and T4 multi-mission robots deliver next-generation remote capabilities and uncompromised performance. We design and manufacture world-leading land force protection systems cyber and electromagnetic activities (CEMA) electronic warfare (EW) and encryption capabilities. Our cyber capabilities provide an information advantage in the fields of kinetic conflict cyber warfare force protection and counterterrorism.

Youll also support the test and qualification strategy for solutions and sub-systems through writing and running system tests. Where possible youll also have the opportunity to participate in trials customer demonstrations and onsite acceptance testing both in the UK and overseas.

Please note applications will close on Friday 31st October.

A few of our employee benefits are:

• Hybrid working where possible - please note the business expectation is 65% of your working time should be onsite over a one-month period
• Half day finish on a Friday
• 25 days holiday per year (plus bank holidays) increasing with long service and with the opportunity to buy/sell up to 5 days
• Private medical insurance with optional family cover
• Pension scheme of up to 7% employer contribution
• Life Assurance 4x salary (flexible up to 10x)
• Group income protection
• Flexible opt-in extras such as a health care cash plan dental insurance gym membership critical illness cover and cycle to work scheme
• Employee assistance program providing mental health and wellbeing support
• Professional membership reimbursement
• Employee Resource Group support

What you can expect:

• Immersive induction into L3Harris who we are and how we work

• Structured technical training programme delivered through the School of Systems Engineering

• 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 youll bring

The role requires the following experience and skills:

• 2:1 or above in Engineering Systems Engineering Computer Science or Physics

• Basic understanding of Systems Engineering such as Requirements Architectural design Integration and/or Verification.

• Some knowledge of electronics is desirable preferably including aspects of RF systems (e.g. Communications Radar or Electronic Warfare).

• Some experience of software development preferably C C or Python

• Excellent interpersonal skills and able to communicate effectively with technical and non-technical audiences

• Willingness to learn and tenacious approach to problem solving

• Demonstrable passion for technology and keeping up to date with latest innovations

Important to know

Due to the nature of our work many our roles require a 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.