Why UK defence suppliers hire test engineers early

UK defence suppliers now bring test engineers in at the start of programmes because validation drives delivery schedules, hard-to-fill technical roles stay open longer, and getting the right people in early protects the whole build.
Author

Jordan Van Tonder

Job Title

Strategy and Delivery Lead

How healthy is defence and security hiring right now?

Demand is climbing fast. MOD expenditure with industry supported a total of 272,000 direct jobs in 2023/24, an increase of 11% on the previous year MOD supported employment estimates 2023/24 - GOV.UK. That builds on the year before, when the total number of MOD-supported UK jobs reached 239,000 in 2022/23, up 6% MOD supported employment estimates 2022/23 - GOV.UK.

Fresh investment keeps the pipeline full. More than 1,700 new jobs are being created across the UK defence sector following at least £1.4 billion in foreign direct investment committed since July 2024 Defence dividend delivers thousands of UK jobs following exceptional foreign investment - GOV.UK. And the sector has long been an attractive place to work: surveyed recruitment grew by 17.8% in 2022 Defence sector continues contributing significantly to UK economy - GOV.UK. When programmes scale this quickly, test and validation work moves to the front of the queue.

What's making test engineers so hard to hire?

The specialist skills squeeze is real. 76% of engineering employers struggle to recruit for key roles, with technical and specialist skills topping the list Institution of Engineering and Technology (IET). Test engineers sit right in that bracket: they verify that systems meet safety, security and performance standards, so a gap in this role stalls the rest of the programme.

The early-career pipeline is thin, too. In engineering, entry-level hiring has fallen to -19% while senior hiring sits at -10%, a 9-percentage-point gap GOV.UK - A snapshot of entry-level hiring in the UK. Fewer juniors coming through means more pressure on experienced engineers, and that pressure shows. 79% of UK technical professionals plan to change employers in 2026 Engineering and Technology Jobs (IET) / Rise Technical. People are willing to move, so suppliers who act early win the best of them.

One structural point matters for planning. For the engineering profession, the vast majority of new hires come from the resident labour force, indicating low reliance on international recruitment GOV.UK - Professionals in IT and engineering. In other words, you're hiring from a finite UK pool, and so is every competitor on your framework. That's why bringing test engineers in early is now a scheduling decision, not just a staffing one.

How do you hire test engineers well in defence?

Start with the programme, not the vacancy. Map where test and validation gate your milestones, then hire to those dates rather than waiting for a build to be ready. Early hires shape test plans, tooling and acceptance criteria before design freezes, which cuts rework later.

Write the role around capability, not just the tech stack. List the standards, security clearances and environments that genuinely matter, and keep the rest open. With specialist skills in short supply, a narrow brief shrinks an already small pool.

  • Hire test engineers against programme milestones, not after the build, so validation shapes design.
  • Prioritise security clearance status and sector-relevant standards early, as these take time to confirm.
  • Keep the brief capability-led so you don't rule out strong people over one tool.
  • Move quickly: with most professionals open to a move, slow processes lose the right people.
  • Plan for retention from day one, since the technical pool is finite and widely contested.

Then move at pace. When most technical professionals are open to a move, a drawn-out process is where offers are lost. Short, well-structured stages and fast feedback keep the right people engaged.

Where does our recruitment agent fit for defence hiring?

We help you reach test engineers and other specialists across a 15 million candidate database, then rank a shortlist for the clearances and standards your programme needs. Our recruitment agent manages recruitment end to end for 8% on a successful hire, with no monthly fee and no upfront cost. If you're planning your next defence programme, tell Reed.ai the role and let's start building your shortlist today.

Sources

Jordan Van Tonder
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