Recruitment Agencies at Scale: Where the Model Works and Breaks

Why this matters

Agencies are often added one vacancy at a time, so a scale-up can accumulate significant dependency without ever making an explicit decision to outsource a large part of hiring. Different consultants learn the business repeatedly, candidate experience varies and fees rise broadly in line with volume. The model still fills roles, but the organisation may not be building a stronger hiring capability.

The central idea

The agency model is optimised for flexible access to external expertise, not continuous integration across an annual hiring plan. It works best when the requirement is occasional, urgent or unusually specialised. When the same type of hiring repeats throughout the year, the company should compare individual assignments with the economics and knowledge retention of dedicated capability.

How to apply it

1. Calculate total agency spend by role family, geography and business unit

Aggregating fees across the year exposes the real pattern of dependency. Individual placement fees rarely feel unreasonable in isolation; the annual total often tells a different story.

2. Identify which roles recur and which are genuine exceptions

Recurring hiring is a candidate for dedicated capability. Genuine exceptions, niche, confidential or unexpected, remain a good fit for the agency model.

3. Measure duplicate briefing, candidate ownership disputes and inconsistent messaging

The hidden cost of a wide agency panel is repetition and drift: the same brief explained many times, the same market approached in incompatible ways, and different versions of the employer proposition in flight.

4. Compare agency outcomes with the cost of dedicated internal or embedded capability

Model each recurring role family under an agency and a dedicated-capacity scenario using full cost, quality and time-to-hire, not just the headline fee.

5. Retain agencies where their specialism, network or flexibility remains distinctive

Reducing agency dependency does not mean removing agencies. Some specialists behave more like trusted advisers and remain the right answer for the work they know best.

Where organisations usually go wrong

The most common failures are structural rather than a reflection of effort. Recognising the pattern early lets the operating model change before more activity is added.

• Treating every agency fee as an isolated cost rather than part of an annual pattern.
• Using too many suppliers without clear specialisation.
• Assuming agency volume automatically means wider market coverage.
• Allowing external recruiters to define the employer proposition differently.
• Removing agencies entirely when selective use would remain valuable.

Practical application for technology scale-ups

A scale-up should distinguish core hiring from exception hiring. Core hiring deserves an operating model that retains knowledge and provides predictable capacity, while agencies can remain a useful route for niche, confidential or unexpected requirements. This preserves the strengths of the agency model without allowing it to become the default answer to every internal capacity issue.

Where the idea has limits

Some specialist agencies behave more like trusted long-term advisers and may outperform broader outsourced models in their niche. A high fee is not automatically poor value if the role is critical and the agency provides differentiated access. The decision should reflect outcomes, not an ideological preference for internal or embedded delivery.

The Saiyō view

Saiyō does not believe recruitment agencies are broken. They are designed for a pattern of hiring that becomes less efficient when specialist demand is continuous. Scale-ups should keep strong agencies for the work they do best while moving recurring hiring into a model that integrates, retains knowledge and provides more predictable economics.