About STS Defence

STS Defence are specialists in mission-critical communications and intelligent systems. We focus on customer value and satisfaction, working in partnership with customers to deliver solutions that make a difference.

Supporting you across the life-cycle

Wherever your project is on the development lifecycle, you can access our expertise and resources at other stages, adding further value and creating the best possible outcome.


STS Defence is a wholly-owned subsidiary of Key Technologies Ltd, a UK based specialist engineering Group, focused on two core market sectors: Defence and Homeland Security.

At a glance

150 staff based at facilities in Gosport and Great Yarmouth
Over 6,000 m2 of secure facilities
Quality measures consistently greater than 99.8%
First company in Europe to gain Nadcap accreditation for both circuit card and cable
Building Typhoon fighter aircraft cockpit assemblies for more than 20 years
Manufacturing electronic guidance components for the world’s most widely used anti-tank missiles
Design authority for the tallest structure on the Royal Navy Type 45 Destroyer

Our values

Customer Focus

We develop strong relationships with a clear understanding of our customers’ needs that enable us to go above and beyond.


We empower our staff and teams to be accountable and responsible to complete the job to the best levels of quality, time and cost.


Our workforce develops through experience, teamwork and training. We value diversity, openness, equality, respect and passion.

An assured service

We want to ensure that you always get a consistently high standard of service. In addition to our other accreditations, we were the first company in Europe to gain NADCAP certification for both AC7120 (Circuit card assembly), and AC7121 (Cable & Harness).
  • Armed Forces Covenant Employer Recognition
  • AS9100D – Quality Management in aerospace sector
  • Cyber Essentials Plus – Cyber Security
  • ISO14001:2015 – Environmental Management
  • ISO9001:2015 – Quality Management System
  • NADCAP AC7120 – Circuit Card Assembly
  • NADCAP AC7121 – Cable & Harness
  • OHSAS 18001:2007 – Occupational Health & Safety Management

work with us

Together at STS Defence

STS Defence is a UK based technology and engineering company, specialising in mission-critical communications, electronics and intelligent systems. We operate in markets that include the defence, marine, aerospace and nuclear sectors.

As a member of our team you can expect to join an exciting, innovative technology and engineering company where our ‘mission’ is to deliver solutions that make a difference. We’ll also make it our mission to invest in you by offering career development programmes that will support you in reaching your full potential!

Opportunities for apprentices and graduates

We work closely with universities and colleges. Part of this relationship is in providing opportunities for students currently studying and those who have recently graduated to work in industry, developing their knowledge and applying their skills to real-world applications

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What You Can Expect

Professional training programmes and year on year growth gives access to significant career development opportunities
Great central location on the south coast with opportunities to travel
Competitive basic salary
Flexible holiday scheme with 25 days holiday a year in addition to bank holidays as standard and the option to purchase up to a further 5 days holiday each year
Company pension scheme with above statutory employer contributions
Life assurance cover
Working hours that include a normal finish time of 1pm on Fridays
Access to a wide range of corporate discounts and additional benefits including a health plan and a tax free cycle scheme
A service leaver friendly employer and signed up to the Armed Forces Covenant

Meet the Team



As one of our Management Accountant’s, Nick supports the business in delivering projects on a budget.



Paul is part of our training team, and is currently delivering training to the nuclear sector.



Currently Engineering Coordinator, Dierk has been with us for just over 30 years.



Max is part of our Business Development team, specialising in developing training solutions.



Nathan is one of our Research Engineers, currently working on R&D projects.



Jody is one of our manufacturing operators, and works in the Technology Centre.



As our Chief Scientist, David is constantly looking at ways we can apply technology to our clients problems.



As a manufacturing technician, former apprentice Jack works on various projects, ensuring that everything is manufactured on time and to the expected quality.

Latest Opportunities

Project Manager

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As we continue our journey through an exciting period of growth and success, we are now looking to enhance our Project Management capabilities by complementing the Engineering Support function with...
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Project Engineer

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The primary purpose of this role is to act as a customer-facing Project Engineer in various sites (including military establishments), providing subject matter expertise and technical support to the customer...
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Integration Design Engineer

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Work as part of the Integration Design Team in the Design Department. The Integration Design Engineer produces Installation Solution’s (ISs), Equipment Guidance Package’s (EGPs), Installation Guidance Information (Level 1, 2...
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Systems Engineer

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The delivery of Engineering Support to contracts including Maritime Multi Media (MMM) and UHF SATCOM equipment installed on Royal Naval ships, submarines and shore establishments to agreed timescales and budgets,...
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