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Job Title – ILS Engineer
Job Location – Bristol, Portchester, Barrow-In-Furness OR Burgess Hill, UK
Job ID – 39363
About this opportunity and L3Harris UK
Operating at 11 sites in the United Kingdom, L3Harris supports Britain's mission to secure and strengthen the country by delivering sovereign innovation across the space, air, land, sea, and cyber domains.
L3Harris’ Bristol location is the Headquarters for our Maritime UK business – a leading global supplier of integrated marine control systems and simulation products for warships, submarines, and high-end commercial marine vessels worldwide. Since its inception, L3Harris has continuously iterated upon our Integrated Platform Management System (IPMS) technology and successfully exported and delivered the system to over 300 vessels across 27 navies worldwide. We have additional Maritime UK sites in Burgess Hill, Barrow-In-Furness, and Portchester. Together, we are powering the Royal Navy’s adoption of autonomous surface vehicle technology as well as delivering autonomous capability to UK ports, harbours, and offshore energy service providers.
A few of our employee benefits are:
- Hybrid working where possible, three days onsite per week
- 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 8% 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, cycle to work scheme, travel insurance, and electric car scheme
- Employee Family Assistance Program providing mental health and wellbeing support
- Professional membership reimbursement (discretionary)
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
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What the role will involve
The responsibilities of your role will include the following:
- Designing, developing, and documenting ILS solutions for both new and existing projects/products.
- Supporting bids and proposals, offering technical insight to customers.
- Defining and implementing comprehensive obsolescence management strategies for all projects and developing associated plans.
- Producing and updating technical publications in line with design changes.
- Ensuring compliance with relevant and mandatory defence standards.


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What you’ll bring
The role requires the following experience and skills:
- Hands-on engineering experience within the ILS field.
- Expertise in a broad range of ILS/IPS methodologies and technical risk management.
- Ability to understand and create solutions for common ILS challenges and issues.
- Proven track record of managing multiple projects simultaneously while meeting tight deadlines in a small team setting.
- Strong skills in stakeholder engagement and management.
- Proficiency in writing concise briefs and presenting data effectively.
- Proficiency with Microsoft Office Applications and Microsoft SharePoint.
- Experience of marine engineering projects, or those in related industries, would be an advantage, but not essential.
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.
#LI-Hybrid #SpecialistILSEngineer #LI-RT1
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