How do I move from agency to in-house in the cover letter?

Show the agency skills that transfer, speed, sourcing, closing, and one example of long-term partnership with a client.

Should I mention diversity hiring results?

If your results are real and measured, yes. Describe what you did, such as sourcing channels, rather than only the outcome.

What metrics belong in a recruiter's cover letter?

Time to fill, hires per year, seniority mix and offer acceptance. Pick the two that match the posting's pain.

Recruiter cover letter example

Recruiter cover letter example: opening on slow engineering hires, proof from time to fill and offer acceptance, and a hiring-plan conversation to close.

Resume for this role

Talia Rosen

Technical Recruiter | Engineering and Robotics Hiring | Full-Cycle and Sourcing

Boston, MA

October 30, 2026

Chinedu OkaforHead of Talent AcquisitionHarborlight Medical DevicesBoston, MA

Re: Senior Technical Recruiter

Dear Mr. Okafor,

Your Senior Technical Recruiter posting at Harborlight Medical Devices mentions engineering roles that stay open for months and hiring managers who are frustrated with the process. I faced both at Beacon Robotics and would like to help your team through the same change.

When I joined, our median engineering role took 61 days to fill. The main causes were unclear intakes and slow feedback. I introduced a structured intake for every role, with must-haves agreed in writing, and a 48-hour feedback rule that hiring managers signed up to. Median time to fill dropped to 38 days, and I closed 45 hires last year, 18 of them senior or staff level. Hiring managers now get a shortlist within ten days of the intake, and they know exactly why each candidate is on it.

My offer acceptance rate is 92% because I discuss compensation early and keep candidates informed between rounds. I source about 70% of my hires myself through LinkedIn Recruiter, GitHub and university robotics clubs, which matters for hard-to-fill specialties like controls engineering, and half of last year's engineering hires came from groups underrepresented in the field.

Before Beacon I spent over two years at Charles River Staffing, placing 85 contract and permanent candidates and finishing 2022 as the office's top permanent placement recruiter. Agency work taught me to move quickly and to describe a role accurately to busy engineers.

I bring 6 years of recruiting experience and would welcome the chance to discuss your hiring plans for the year. I can share the intake template I use if it would be useful before we meet.

Best regards,

Talia Rosen

Fictional candidates and employers. Any resemblance to a real person or company is coincidental.

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How this letter works

What each part of the letter above does, and how to do the same in yours.

The opening

It names the two problems in the posting, roles open for months and frustrated hiring managers, and says Talia has fixed both. A recruiter's letter is itself a pitch, so it opens like a good outreach message.

Whom to address

Write to the head of talent acquisition or the recruiting manager named in the posting; recruiters are easy to find on LinkedIn, and not finding the name reads poorly in this field.

Requirements matched to proof

The posting asks forReduce time to fill: The letter showsStructured intakes and a 48-hour feedback rule; median from 61 to 38 days.
The posting asks forClose senior technical hires: The letter shows45 hires last year, 18 at senior or staff level; 92% offer acceptance.
The posting asks forSource hard-to-find candidates: The letter showsAbout 70% of hires sourced directly.

Length

Five paragraphs, in the usual 250 to 400 words. Talent leaders read the letter as a sample of candidate outreach: specific, short and easy to say yes to.

This letter: 266 words.

The closing

It asks about the employer's hiring plans, which shows the candidate thinks in terms of a hiring roadmap.

Mistakes to avoid in this letter

Only quoting hires
A number of hires without time to fill, seniority or acceptance rate says little about quality.
Forgetting hiring managers
In-house recruiting is half candidate work, half manager work. Show how you improved the manager side.
A generic letter
A recruiter who sends a template letter undermines their own pitch. Personalise it as you would outreach.

Questions about this cover letter

How do I move from agency to in-house in the cover letter?: Show the agency skills that transfer, speed, sourcing, closing, and one example of long-term partnership with a client.
Should I mention diversity hiring results?: If your results are real and measured, yes. Describe what you did, such as sourcing channels, rather than only the outcome.
What metrics belong in a recruiter's cover letter?: Time to fill, hires per year, seniority mix and offer acceptance. Pick the two that match the posting's pain.

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