Lexique RH

Sourcing: Definition and Best Practices in Recruitment

Candidate sourcing: definition, search techniques and channels, tools and strategies to identify the best profiles before your competitors.

Sourcing: Definition and Best Practices in Recruitment

Sommaire

70%
Passive candidates in the working population
-60%
Cost reduction (referral)
30-40%
Response rate to personalised approach
-30-50%
Time-to-hire reduction with active pipeline

Definition

Sourcing refers to the set of techniques and strategies used to identify, locate and attract potential candidates, whether they are actively or passively seeking employment. It is the first stage of recruitment that involves building a pool of qualified talents, sometimes even before a position is opened.

Sourcing Channels and Techniques

Comparison of sourcing channels

ChannelProfile TypesCostSpeedEffectiveness for Hard-to-Fill Roles
LinkedIn RecruiterActive and passiveHigh (subscription)FastExcellent
Job boards (Indeed, APEC)ActiveMedium (per posting)FastAverage
Internal referralQualified passiveLow (bonus)MediumVery good
Specialist CV databasesActive and semi-activeMediumMediumGood
GitHub / BehancePassive technicalLowLongExcellent
Professional events / Job fairsPassiveMedium-highLongVery good
Spontaneous applicationsMotivated activeLowVariableVariable
Alumni networksQualified passiveLowMediumGood

Advanced Sourcing Techniques

  1. 1

    Boolean Search

    Use logical operators (AND, OR, NOT) to refine your searches. Example LinkedIn: (Developer OR Engineer) AND (React OR Vue.js) NOT Freelance. Fundamental technique for digital sourcing.

  2. 2

    Google Dorks

    Advanced Google operators to find profiles without paid access. Example: site:linkedin.com/in 'Python Developer' 'London' -recruiter

  3. 3

    Approaching Passive Candidates

    Personalise each message: mention why THIS candidate interests you specifically. Base it on their visible achievements. A generic message gets less than 5% response, a personalised one 30-40%.

  4. 4

    Community-based Sourcing

    Identify relevant communities (Discord, Slack, LinkedIn groups, specialised forums) and participate actively. Professional events and webinars offer direct exchange opportunities.

  5. 5

    Automation and AI Tools

    Use extensions (Phantombuster, Clay) to automate data extraction. AI tools help write persuasive outreach messages and analyse CVs quickly.

Building a Proactive Talent Pool

The best sourcing happens in advance of actual need. Build a continuous talent pool: add interesting profiles identified even without an open position, maintain light contact (newsletter, events), and activate them as a priority when a need emerges. You will reduce your time-to-hire by 30 to 50%.

Frequently Asked Questions about Sourcing

What is the best sourcing channel for technical profiles?
For IT and technical profiles, LinkedIn Recruiter remains essential for volume, but GitHub, Stack Overflow and specialised communities (Developer Discord, tech forums) allow you to identify the most active and passionate profiles. Internal referral often generates the best results for highly specialised senior profiles. Combine multiple channels: hard-to-fill profiles require a multi-channel approach.
How to personalise outreach messages at scale?
Large-scale personalisation relies on fine segmentation of your target profiles. Create 3-4 different templates based on experience level, industry or main competency. In each template, integrate personalised fields: name, current company, recent visible achievement. Tools like Clay or Lemlist enable this semi-automated personalisation.
How much time to dedicate to sourcing per recruitment?
For a standard position, plan 8 to 12 hours of active sourcing spread over 1 to 2 weeks. For a hard-to-fill profile (specialised developer, data expert), plan 20 to 30 hours over 3 to 4 weeks. Sourcing time also depends on the quality of your existing talent pool: if you have pre-identified profiles, you can reduce by 50%. Investing in a continuous pipeline is therefore the best way to optimise sourcing time.
How to measure the effectiveness of sourcing actions?
Track these metrics per channel: number of profiles identified, response rate to outreach, conversion rate to qualified application, advancement rate in process, and final Quality of Hire of candidates recruited via this channel. A channel generating many applications but few quality hires is not efficient. Reallocate your time and budget to channels with the best quality-to-cost ratio.
Is sourcing reserved for large companies?
No, sourcing is accessible to SMEs with limited resources. LinkedIn Basic (free), alumni networks and internal referral cost nothing or very little. Small organisations even have an advantage: they can offer a more human and direct approach. Start by optimising your existing network, involve your staff in sourcing through referrals, and progressively build a pool of qualified profiles.

Centralise Your Sourcing in Aurelia

Candidate pool tagged by competencies, CV and LinkedIn profile import, nurturing campaigns and effectiveness measurement by channel.

Book a DemoExplore the HR Lexicon

Pour aller plus loin

Recruitment Glossary - HR Lexicon

Talent Pool: Building Your Talent Pipeline

Outbound Recruiting: Proactively Approaching Candidates

Retour au Lexique RH