Where to source candidates, sorted by who you need
Where to source candidates depends on who you need. Active job seekers come through job boards and your careers page, people one step removed through employee referrals, and passive people through professional networks, practitioner communities and public profile search. Campus, apprenticeship and public job centers add early-career and local talent.
The short answer
- Source where the person you need already spends time, not where your last hire came from.
- Job boards and your careers page reach people who are looking. Many good people are not looking right now.
- Referrals reach people one step removed, with a colleague who already vouches for the fit.
- Networks, communities and public profile search reach people who never applied anywhere.
- Campus, apprenticeships and public job centers reach people before or between careers.
Where to source candidates, place by place
Read the second column first. Each place reaches a different kind of person, and the right one for a role follows from who that role needs.
| Place | Who it reaches | What it costs you | Best for |
|---|---|---|---|
| Your careers page and job boards | People actively looking right now, who found the ad. | Posting fees or nothing, plus screening time for every applicant. | Common roles with many qualified people in the market. |
| Employee referrals | People your team already knows and would work with again. | Asking well, plus any referral bonus you choose to pay. | Roles where trust and team fit matter most. |
| Professional networks | Most working professionals. LinkedIn reports 1.4B+ members by its own count. | Search time, and paid seats or credits for deeper search. | Experienced hires who are employed and not applying. |
| Practitioner communities | People who show their work. GitHub reports 180M+ developers by its own count. | Reading time. Profiles are public, contact details often are not. | Engineers, designers, researchers and other show-your-work roles. |
| Public profile search tools | People across the open web, including those under other titles. | A subscription or credits, and judgment on each result. | Hard or niche roles where keyword search misses people. |
| Campus and job fairs | Students, recent graduates and people changing careers. | Event time, travel and a long lead time before start dates. | Entry-level programs and annual intern or graduate intakes. |
| Apprenticeships and American Job Centers | People in training and local job seekers registered with public programs. | Program setup time. Job center services vary by state. | Skilled trades, local hourly roles and earn-while-you-learn pipelines. |
Member and developer counts are each platform's own figures. A count is reach, not response.
Posting is not the same as sourcing
The Bureau of Labor Statistics describes how recruiters search for applicants: by posting listings, attending job fairs, and visiting college campuses. Every one of those puts the role in front of a crowd and waits for someone to step forward.
Sourcing is the other motion. It starts from a named person who has not applied and may not know the job exists. Some places in the table above serve posting and others serve sourcing, which is why a role that gets no applicants usually needs a different place, not a better ad.
How to pick where to source for one role
Five questions, answered in order, narrow the table to the two or three places worth your week.
- Ask whether qualified people are looking If the skill is common and people change jobs often, post first. If the skill is scarce, the people you need are employed and not reading ads.
- Ask where their work is visible Engineers leave code, designers leave portfolios, researchers leave papers. A role whose work is public is easier to source from the work than from a title. A data engineer's public pipeline repo says more than a title that reads Analyst II.
- Ask who already knows them Before searching strangers, ask the team who they would hire again. A referral arrives with context a profile cannot give.
- Ask whether the role can train someone If 6 months of training is acceptable, campus, apprenticeship and career changers widen the pool more than any search filter.
- Pick two or three places and measure them Count replies and first screens passed per place for each role. Drop the place that produces neither after a fair trial. Over a year, the 80/20 rule shows which few places produce most hires.
The honest version
No place is best for every role. The place that filled the last role tells you about that role, not this one. Start from who the person is, then choose where to look.
Places to source candidates that cost nothing but time
None of these needs a paid seat. Each needs time, and most need a specific ask rather than a broadcast.
- Your careers page, with the role described in plain words a searcher would type
- Employees asked by name about one role, not a company-wide referral email
- Past applicants who reached a late stage and were close
- Public GitHub, portfolio and conference speaker pages for show-your-work roles
- Search engine X-ray search of public profile pages using site: and quoted phrases
- University career centers, which post roles for students and recent graduates
- Professional associations and their member job boards or newsletters
- Former colleagues and alumni groups in the field you are hiring for
Searching public profiles without a Boolean string
A one-line role description turned into a search across public profiles.
The Cognitive covers the public-profile row of that table. Describe the role in a sentence and it searches ~900M public profiles, including people who do the work under a different title. Each person comes back ranked with the reason from their profile, and you reveal contact details only for the people you pick.
How to tell if a sourcing place is working
Do
- People from it reply, even when the answer is not now.
- People from it pass the first screen at a rate you would repeat.
- It surfaces people your other places never showed you.
Do not
- It produces volume that nobody has time to screen.
- Every person it shows also appears in your other places.
- After a fair trial on two roles, nobody from it reached a screen.
The public programs most sourcing guides skip
The US Department of Labor counts approximately 2,300 American Job Centers and lists recruitment services for employers with job openings: help writing job order requirements, matching job seekers to them and arranging job fairs. The Department says services may vary from state to state, so call the local center before planning around one.
Registered Apprenticeship is the longer route. The Labor Department's employer page pitches it as a way to create a future workforce and reduce turnover. It suits roles you can teach, and it reaches people a profile search never will, because they have no relevant profile yet.
Keep reading
Candidate sourcing channels compared · How to source candidates · Passive candidate sourcing · Free Boolean search generator · Juicebox vs hireEZ vs SeekOut · The 80/20 rule in recruiting
Frequently asked questions
Where to source for candidates?
Source where the people you need already are. Job boards and your careers page reach active job seekers, employee referrals reach people your team knows, professional networks and practitioner communities reach employed people who are not applying, and campus, apprenticeship and public job center programs reach early-career and local talent. Most roles need two or three of these, not all of them.
Where can I source candidates for free?
Your careers page, employee referrals, past applicants who came close, public GitHub and portfolio pages, search engine X-ray searches of public profiles, university career centers and professional associations all cost time rather than money. American Job Centers also offer recruitment services to employers, though services may vary from state to state, so check with the local center first.
What is the best place to source candidates?
There is no single best place, because each place reaches a different kind of person. For common roles with many people looking, job boards work. For scarce skills held by people who are employed, professional networks, communities and public profile search work better. Measure replies and first screens passed per place, and keep the ones that produce both.
Where do recruiters find passive candidates?
Recruiters find passive candidates where those people are visible without applying: professional networks such as LinkedIn, which reports more than 1.4 billion members by its own count, practitioner communities such as GitHub, conference speaker lists, published work and referrals from people who know them. The search is only half of it; a short, specific first message decides whether they reply.
Where should I source software engineers?
Start where engineers show their work: GitHub, which reports more than 180 million developers by its own count, open source project contributor lists, technical community forums and conference talks. Add professional network search for seniority and current employer, and ask your own engineers for referrals. Judge people on what they built, not only on the title they hold.
Where can I find entry-level candidates?
University career centers, campus job fairs, Registered Apprenticeship programs and local American Job Centers reach people early in a career or changing one. The Bureau of Labor Statistics names job fairs and college campus visits among the ways recruiters search for applicants. Plan ahead, because campus pipelines follow the academic year.
Is LinkedIn the only place to source candidates?
No. LinkedIn is the largest professional network, with more than 1.4 billion members by its own count, but it misses people who keep thin profiles, people whose work is visible elsewhere and people who are not yet working in the field. Communities, referrals, public profile search and training programs each reach people a LinkedIn search will not show.
How many places should I source candidates from for one role?
Two or three is a workable start for one role. More places spread the same hours thinner and make it hard to tell which one produced the hire. Track replies and first screens passed for each place, then drop the weakest and try a new one.
What is the difference between posting a job and sourcing candidates?
Posting puts the role in front of a crowd and waits for applicants; sourcing starts from a named person who has not applied and contacts them. Posting reaches people who are looking now. Sourcing reaches people who are employed and not reading ads, which is why roles with no applicants usually need sourcing rather than a rewritten ad.
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