We put a 99% candidate retention rate on our homepage. It’s the first proof point we mention in almost every client conversation. It sits at the top of our services page. So it’s fair to ask: what does that number actually mean, how was it calculated, and should you believe it? This article answers all three questions. In full.

Why Methodology Matters More Than the Number

Every recruitment agency in the world claims to place great candidates. Most of them have a retention rate figure on their website too. High-confidence statistics are cheap to publish and expensive to verify, which is exactly why most prospective clients either ignore them or dismiss them as marketing.

We don’t want ours to land that way. We want it to stand up to scrutiny, because it does.

So before we use this number in any flagship content or sales material, we’re publishing the methodology behind it, exactly what we measured, over what period, across which placements, and what we chose to include and exclude. Transparency is what separates a real data point from a marketing assertion. You can decide for yourself which one this is.

First: What Does “Candidate Retention” Mean in a Recruitment Context?

Before getting into Itentio’s numbers, it’s worth being precise about what candidate retention means when a recruitment agency uses the term, because it’s often used loosely, and loose definitions produce impressive-sounding statistics that mean very little.

In the broadest sense, candidate retention measures whether a placed candidate remains in their role after a defined period of time. Industry sources typically measure this at six months or twelve months post-placement. Retention rate measures how long candidates placed by an agency stay with the client company, and is usually tracked over specific periods such as six months or one year after placement.

But there’s a more operationally meaningful way to measure it, and it’s the one we use.

In Itentio’s model, the retention rate is calculated based on warranty replacements: the number of placed candidates for whom a client exercised the formal replacement warranty within the guaranteed period. A warranty replacement means a placement failed – the candidate left or was let go during the warranty window, and the client came back to us to find a replacement at no additional cost.

This is a stricter and more conservative measure than a standard post-placement survey. It doesn’t ask “how is the candidate getting on?” six months later. It tracks the binary outcome that matters most financially to a client: did this placement hold, or did it fail?

The Full Methodology for 99% Candidate Retention Rate

Measurement period: May 2018 to present – nearly eight full years of placements across all service lines.

Universe of placements: All successfully closed positions across Itentio’s full service portfolio, including contingency recruitment (success-fee model), Recruitment as a Service (subscription model), and executive search. No placements have been excluded from this calculation.

Client base covered: Over 70 companies across the full range of business stages – early-stage startups, scaling SaaS businesses, established technology companies, and enterprise clients. Based in the US, UK, Western Europe, Germany, Poland, Middle East and beyond. Across sectors including B2B or B2C SaaS, FinTech, AdTech, Digital Marketing, DefenceTech, MedTech, HealthTech, Web3, Gaming, E-commerce, and more.

What counts as a retention failure: Any active warranty replacement request made by a client within the contractual warranty window. Under Itentio’s standard contingency terms, the warranty period is 12 weeks. Any candidate who leaves or is let go within that period, triggering a replacement process, is counted as a non-retained placement.

What this measure does not capture – and why we’re transparent about it: This methodology measures warranty-period retention, not indefinite employment tenure. A candidate who leaves a role 18, 24 or 36 months after placement is not captured in this figure. We make no claim about what happens to placements beyond the warranty period – that is determined by the client’s employment decisions, market conditions, and the candidate’s own career trajectory, none of which are within our control or appropriate for us to claim credit for. We measure what we’re responsible for: the quality of the match and the integrity of the placement itself.

The calculation:

Total placements made (May 2018 – present): hundreds of successful placements across 70+ client companies.

Warranty replacement events: 2.

Retention rate: (Total placements − 2) ÷ Total placements × 100 = 99%+

Two placements in nearly eight years required a warranty replacement. Everything else held.

Putting the Number in Context

A number only means something when you understand what it’s being compared against.

First-year attrition – the percentage of employees who quit or are terminated within 12 months of starting – sits at approximately 37.9% across industries according to workforce data, meaning roughly 1 in 3 new hires does not survive their first year. Even accounting for the fact that Itentio’s warranty window is shorter than 12 months, the underlying signal is clear: a significant portion of hires fail, and they fail quickly.

A high retention rate suggests that an agency is placing candidates who are not only qualified but also a good cultural fit for the organisation, and it can significantly boost an agency’s credibility while reducing the need for re-recruitment. Most agencies benchmark retention at 3, 6 or 12 months, and position anything above 80–85% as strong performance.

Two warranty replacements across hundreds of placements and eight years of operation is not a statistical near-miss. It is an outlier – and it’s worth understanding what produces it.

What Actually Drives a 99% Candidate Retention Rate

Retention isn’t something you achieve at the point of signing a contract. It’s the downstream result of everything that happens before the offer letter. Here’s where ours comes from.

Screening that goes beyond the CV. The job description tells you what skills a candidate needs. It rarely tells you what the working environment is actually like, what pressure profile the role carries, or what the team dynamic demands. Our screening process is built around fit with those realities, not just fit with a job spec. By the time we present a candidate to a client, we’ve had substantive conversations about motivation, expectations, working style, and what this specific person needs in order to perform at their best.

Honest expectation-setting on both sides. Most placement failures aren’t skill failures – they’re expectation failures. A developer who thought they were joining a stable, process-driven organisation discovers a chaotic startup environment. A client who thought they were hiring a strategic technical lead discovers a strong executor who needs direction. We treat the gap between expectations and reality as a critical risk to manage, not a post-hire problem to solve. That means asking harder questions during briefing calls, and being direct with candidates about what they’re actually walking into.

Cultural calibration for the Polish market. Many of our clients are international – US- or Canada-headquartered, UK-based, or Western European companies building remote teams in Poland. They bring their own management cultures, communication norms, and workplace expectations. Polish professionals bring theirs. A placement that looks perfect on paper can fail because those two worlds weren’t explicitly bridged during the hiring process. We do that bridging as a matter of course, because we’ve seen what happens when it’s skipped.

Engagement monitoring after placement. Our relationship with a candidate doesn’t end when they start. We stay in contact during the early weeks. We are checking that the onboarding experience matches what was described, that the role is developing as expected, and that any early friction is surfaced and addressed before it becomes a reason to leave. Two touchpoints in the first three months have, on multiple occasions, identified and resolved situations that would otherwise have become warranty replacement events.

We don’t fill positions, we close matches. This distinction matters more than it sounds. The pressure in contingency recruitment is to place candidates and generate fees. An agency optimising for speed will present candidates who broadly fit and move on. We will extend a search rather than present a candidate we don’t believe in, and we’ll tell a client when their brief is creating an unrealistic profile rather than just attempting to fill it. That willingness to slow down when required is a direct contributor to the placement quality that produces a 99% outcome.

What This 99% Candidate Retention Rate Means for You as a Client

The cost of a failed placement is never just the recruitment fee.

There is the lost productivity during the vacancy period. Also, there is the time your team spent interviewing the candidate who didn’t stay. There is the disruption to whatever project or team the person was hired to support. On top of that, there is the management time spent handling their departure. And then there is the full cost of starting the search again – often with a compressed timeline and a team that has lost confidence in the process.

Conservative estimates put the total cost of a failed tech hire at anywhere from one to three times the candidate’s annual salary, once you account for all of those factors. For a senior software engineer in Poland, that means a failed placement represents a real business impact of $70,000 to $250,000 – for a role where you paid a recruitment fee of $14,500 to $18,000.

A 99% retention rate isn’t a vanity metric. It’s a measure of how rarely our clients are exposed to that cost.

Over eight years and more than 70 companies, that exposure has happened twice.

A Note on Intellectual Honesty

We’ve been deliberate in this article about what our retention figure does and doesn’t claim.

It measures warranty-period retention: the 12 weeks following a candidate’s start date, during which we take direct responsibility for the quality of the match. It does not measure what happens to placements at 6 months, 12 months, or beyond – because post-warranty tenure is influenced by a wide range of factors outside our control, including changes in company strategy, funding events, management changes, and individual career decisions.

We could use a longer measurement window and still produce strong numbers. But we’ve chosen to stand behind the narrower, more defensible definition – because it’s the one we’re actually responsible for, and because we’d rather understate a strong result than overstate a weaker one.

Two warranty replacements in nearly eight years. That’s what the 99% means. No more, no less.

See How We Work in Practice

The methodology behind this number is built into every stage of how we run a recruitment engagement – from the briefing call through to post-placement follow-up.

If you want to understand the process in depth, our IT recruitment services page covers how we structure each engagement, including the warranty terms that define the retention measurement described in this article.

If you want to see the results in the context of specific client projects – the industries, the roles, the timelines, and the outcomes – our case studies document placements from early-stage startups to enterprise technology businesses across the US, Europe, and beyond.

And if you’d like to have a direct conversation about what a placement process looks like for your specific hiring need, we’re straightforward about what we can and can’t do – and what realistic outcomes look like for your context.