If your recruitment agency’s main pitch is still “we’ll find you CVs faster”, it’s time to ask a harder question: what exactly are you paying for?
AI has changed the economics of the first half of hiring. Sourcing, CV screening, shortlisting, interview scheduling and candidate communication are now faster and cheaper for everyone. Agencies use the tools. Candidates use them to apply at scale. In-house talent teams use them too. The ability to put a long list of engineers in front of a hiring manager is no longer scarce, and scarcity is what employers have traditionally paid a fee for.
That matters in UK engineering more than most sectors. The skills gap is long-running and well documented, project pipelines in infrastructure, energy transition, defence and advanced manufacturing are growing, and the people who can actually deliver that work are not sitting on job boards. Finding a name is easy. Finding the right engineer, landing them compliantly and keeping them productive on a live programme is not.
So the bar has moved. Engineering employers should expect more from their agency suppliers, and the agencies worth keeping will welcome that conversation.
Compliance Is Where Trust Is Earned
In engineering, a bad hire isn’t just expensive. It can be a safety, regulatory or contractual problem. Right to Work checks, pre-employment screening, security clearance (BPSS, SC and beyond for defence and nuclear work), professional registration with bodies such as the Engineering Council, sector tickets like CSCS or PTS, and validation of qualifications that were often earned overseas all take time and judgement.
AI can flag a gap. It can’t own the risk. A good agency should be taking real ownership of this layer, with documented processes, audit trails and clear accountability when something is missed. If yours treats compliance as a box ticked at offer stage, that’s a warning sign.
From Matching Skills to Understanding Fit
A keyword match tells you an engineer has used a piece of software or worked on a type of asset. It tells you very little about how they lead a team under programme pressure, how they handle a difficult client, or whether they’ll gel with the people already on site.
This is where an experienced consultant earns their fee. I’d expect a shortlist to come with a real point of view: leadership capability, team alignment, where this person will add value in the first six months, and where the risks sit. Structured assessment, behavioural interviewing and properly taken references should be standard, not extras.
Employer Branding Is a Hiring Tool
Employer brand is so often overlooked as a driver of quality hiring, and in engineering it’s frequently the deciding factor. The best engineers have choices. They want to know about the projects, the technical challenge, the career path, flexibility and the culture of the team they’d join.
Agencies talk to your target market every day. They hear what candidates say about you, and about your competitors. The good ones should be feeding that back, helping you sharpen your proposition and representing you well in the market. If your agency can’t tell you how you’re perceived, they’re not listening closely enough.
Workforce Planning, Project Resourcing, and Statement of Work
Engineering businesses run on project pipelines. Bid wins, mobilisation dates, phase changes and demobilisation all create predictable peaks and troughs in demand. Yet many employers still go to agencies one vacancy at a time, usually when it’s already urgent.
The more valuable relationship is forward-looking. Agencies with good market data can help you plan: which skills will be scarce in the next 12 to 24 months, what the market rate really is, and where to build, buy or borrow capability. They should be able to resource a whole project, from the project manager through to the delivery team, rather than filling roles in isolation.
For defined pieces of work, a Statement of Work model can make more sense than individual placements. The supplier commits to deliverables and outcomes rather than headcount. Done properly, it moves risk to where it can be managed and gives you a clearer line of sight on cost. Done badly, it’s a relabelled contractor arrangement that won’t stand up to scrutiny, so expect your supplier to know the difference.
The Non-Permanent Workforce Is Where Agencies Matter Most
Contractors, interims, freelancers and fixed-term specialists make up a large share of the engineering workforce on major programmes. Here, agencies remain integral, and AI changes the picture least.
Many of these professionals don’t describe themselves as contractors. They call themselves a commissioning engineer, a planner or a CAD technician who happens to work on assignment. That makes them harder to find through standard searches, harder to coordinate across multiple sites and projects, and harder to manage and process once engaged.
The work that follows a placement is substantial: IR35 status determinations, onboarding, timesheets, pay and bill, umbrella company due diligence, extensions, and compliant offboarding. Get any of it wrong and the cost lands on the end client as well as the supplier. Engineering employers should expect an agency to run this end to end, with transparent reporting, and to be able to evidence it.
Internal Mobility and Selection
The best candidate is often already on your payroll. Engineering firms that move people between projects, sites and disciplines hold on to knowledge and reduce hiring risk. But internal selection is frequently informal, inconsistent and political.
Agencies can bring the same rigour to internal candidates that they apply externally: objective assessment, benchmarking against the external market, and support for redeployment as projects wind down. It’s a natural extension of the relationship, and one few employers think to ask for.
Pay for Value, Not Volume
All of this points to one conclusion: the traditional fee, a percentage of first-year salary for a placement, is getting harder for agencies to defend. If the sourcing is faster and cheaper, a fee built around it makes less sense.
Employers should be asking for modular, more innovative pricing. Separate the elements and price them on their merits: sourcing, assessment and profiling, compliance and vetting, employer brand support, workforce planning, project resourcing, SoW delivery, contractor management, and internal mobility. Add retainers for ongoing market intelligence, subscription models for volume hiring, and fees linked to outcomes such as retention or project milestones.
The agencies that thrive will be the ones that lean into this. They’ll stop defending the old model and start showing, line by line, where they add value. For engineering employers, the ask is simple: stop buying CVs and start buying capability. Then hold your suppliers to it.
