Sourcing Fundamentals

Sourcing is the unglamorous half of recruiting. The companies that hire well treat it as a portfolio: multiple channels, measured for quality, with outreach that respects the candidate's time. The companies that don't end up paying 20–25% agency fees forever.

The pipeline model

Think of sourcing as a funnel with a known conversion rate at each stage. Reverse-engineer from your hiring plan: if you need to hire 10 engineers in a quarter and your offer-to-hire is 80%, you need ~12 offers. Working backwards through typical conversion rates tells you how many top-of-funnel prospects you need.

A typical sourcing funnel (benchmarks vary by role and brand)

Prospects identified
1000
Contacted
600
Replied
120 (~20%)
Phone screen
60
Onsite
20
Offer
8
Hire
6

Know your real conversion rates

Industry benchmarks (LinkedIn Talent Insights, Ashby Benchmarks) put cold outreach response at 15–25%, and prospect-to-hire at ~0.5–1%. Your numbers will differ — track them per channel and per recruiter.

The five channels

The channel portfolio every team needs

Channel	Best for	Typical cost	Lead time
Inbound (careers page + job boards)	Volume roles, brand-name companies	$0–$500 per posting	Continuous
Referrals	Highest quality, all roles	$1k–$10k bonus	1–4 weeks
Outbound sourcing (LinkedIn Recruiter, GitHub, etc.)	Specialist roles, passive candidates	$10k–$15k/seat/yr	2–8 weeks
Community (events, OSS, Slack/Discord)	Specialist + senior roles	Time + sponsorships	Months — long-tail
Agencies / contingent	Hard-to-fill or urgent senior roles	20–25% of first-year salary	4–8 weeks

Referrals are the highest-converting channel

Multiple studies (Jobvite, LinkedIn) show referred candidates have 2–3x higher offer-accept rates and ~25% longer tenure. Build a real referral program: clear bonus, fast feedback to referrers, and a visible 'open roles' digest.

Outreach that gets replies

The five elements of a high-reply message

1
Specificity
Reference one concrete thing about the person's work — a repo, a talk, a project. Not 'I see you're at Acme'.
2
Why them, why now
Tie their work to the role in one sentence. Not 'your background looks great'.
3
The role in one paragraph
What the team is, what the role owns, why it matters. Skip the corporate boilerplate.
4
Comp transparency
Posting bands has been shown to lift reply rates 20–40% (Indeed Hiring Lab, 2024). Some US states now require it.
5
Low-friction ask
‘15 minutes this week or next?' beats ‘apply via this link'.

A weak vs strong outreach message

Weak

'Hi {{firstName}}, your profile looks impressive'
Three-paragraph company pitch
Vague role title
‘Let me know if you're interested'
Sent at 10pm on Friday

Strong

‘I saw your talk on streaming joins at QCon'
One paragraph on the team and what they own
Specific level + band ($X–$Y)
‘15 min Wed or Thu?'
Sent Tue–Thu, 8–11am candidate's time

Sourcing for diversity

Diverse hiring outcomes start with a diverse top of funnel. The intervention is structural: change where you source, who reviews early, and the language you use — not quotas at the offer stage.

Audit current pipeline composition by source — by gender and (where legal) race
Add 2+ communities to outreach (e.g., AnitaB, /dev/color, Latinas in Tech, Black Tech Nation, Tech Returners)
Run job descriptions through bias scanners (Textio, Datapeople) — drop gendered language and inflated requirements
Require diverse slate at onsite (e.g., Rooney Rule style) — but never tokenize
Mask names/schools at resume review where legal (UK/EU more often than US)
Track pipeline composition at every stage to find the drop-off

Quotas at offer stage backfire

Forcing demographic targets at the offer stage exposes you to legal risk under US Title VII (post-2023 SFFA implications for private employers are still developing) and demoralizes hires who suspect they were tokens. Intervene at sourcing and review, not at offer.

Source quality, not source volume

‘We got 1000 applicants from LinkedIn' is not a win if zero converted. Track source quality with the same rigor a sales team tracks lead source.

Source metrics that matter

Metric	Definition	Use it for
Source-to-screen	% of prospects that pass phone screen	Channel quality
Source-to-offer	% of prospects that get an offer	End-to-end fit
Source-to-hire	% of prospects that become hires	Channel ROI
Quality of hire (6/12 mo)	Performance rating of hires by source	True signal — lag indicator
Cost per hire by source	All-in cost ÷ hires	Budget allocation

When to use agencies

A simple agency decision rule

1
Use them when…
Role is genuinely scarce (e.g., niche regulated specialist), urgent (board-mandated), or executive-level where confidentiality matters.
2
Don't use them when…
You have time, the role is common, and the issue is that your in-house sourcing process is weak. Fix the process, don't paper over it.
3
Negotiate fees
Contingent fees are 20–25% of base; retained 25–33% paid in stages. Push for fee floors instead of percentages on senior roles.
4
Run them like a vendor
Clear scorecard, weekly review, no exclusive-on-everything contracts. Measure them on quality, not submissions.

Common mistakes

Single-channel dependence (one job board, one recruiter)
Volume-as-vanity: bragging about applicant count with no conversion
Outreach templates with no personalization beyond the merge field
No comp band in the first message
Treating referrals as 'nice to have' instead of the highest-ROI channel
Letting agencies set the bar — they optimize for placements, not your culture
Not measuring quality of hire by source after 6 months

References

LinkedIn Talent Solutions — Sourcing benchmarks — LinkedIn
Ashby — Hiring benchmarks — Ashby
Greenhouse — Inclusive hiring guide — Greenhouse
Indeed Hiring Lab — Pay transparency impact — Indeed Hiring Lab
Textio — Inclusive language research — Textio
SHRM — Talent acquisition resources — SHRM
Jobvite — Recruiting benchmark report — Jobvite

Written by Pawan Joshi. Sources cited inline. Last updated 2026-05-17.