Not all hiring platforms are created equal.

Recruiters don’t use Indeed, GitHub, Stack Overflow, Glassdoor, and Crunchbase the same way and understanding how they think about each one can completely change how you source, approach, or position talent.

Below is a recruiter-grade breakdown of what each platform is really good for, and the hidden signals recruiters look at when they’re there.

1. Indeed: The “High-Volume & Generalist” Platform

Most effective for

• Entry- to mid-level roles (sales, customer success, admin, hospitality)

• Candidates who are actively job hunting right now

• Blue-collar and service sectors (logistics, retail, manufacturing), especially in Europe

How recruiters actually use it
Indeed is less about precision and more about scale. Recruiters rely heavily on the CV database to sift through thousands of profiles quickly, filtering by city, availability, and basic experience.

Think of Indeed as the fastest way to surface availability, not hidden gems.

Recruiter mindset
“If I need people now, and I need a lot of them, this is where I go.”

2. GitHub: The “Technical Credibility” Platform

Most effective for

• Senior engineers, backend developers, software architects

• AI, ML, and data science profiles (especially notebooks and repositories)

• Passive candidates who aren’t job hunting but are building constantly

How recruiters actually use it
Resumes are almost irrelevant here. Recruiters look at:

• Contribution graphs (the green squares)

• Repository depth and originality

• Followers from other developers

If respected engineers follow someone, that’s a strong peer-validation signal.

Recruiter mindset
“I’m not hiring skills. I’m hiring someone other developers respect.”

3. Stack Overflow: The “Niche Expert” Platform

Most effective for

• Senior problem-solvers

• Legacy systems specialists

• DevRel and technical communicators

• Highly specific tech stacks (Rust, Kubernetes, niche frameworks)

How recruiters actually use it
The Reputation Score is everything. In many European tech hubs, a high score is treated like a pre-passed technical interview.

Tags matter more than titles. A Rust expert is found via Rust tags, not job history.

Recruiter mindset
“If this person can explain and solve hard problems publicly, they can do it on my team.”

4. Glassdoor: The “Cultural & Strategy” Platform

Most effective for

• Leadership and HR profiles

• Culture transformation specialists

• Employer branding and compensation benchmarking

How recruiters actually use it
Glassdoor isn’t just defensive. It’s offensive.

Recruiters:

• Benchmark salaries city-by-city (Berlin, London, Paris)

• Identify competitors with low work-life balance scores

• Actively message employees at poorly rated companies

Recruiter mindset
“They’re unhappy where they are. Let’s show them something better.”

5. Crunchbase: The “Strategic Sourcing” Platform

Most effective for

• Executives, founders, and C-suite roles

• Startup builders who thrive in scale-up chaos

• Fintech and deep-tech leadership

How recruiters actually use it
Timing is the weapon.

Recruiters watch for:

• Funding rounds leading to hiring sprees

• Layoff signals leading to sudden availability of top talent

• Exit history showing founders and leaders who’ve been there before

Recruiter mindset
“Right person, right moment beats any keyword search.”

The Big Takeaway

Each platform answers a different hiring question:

• Indeed: Who’s available at scale?

• GitHub: Who builds real things and earns peer respect?

• Stack Overflow: Who solves the hardest problems?

• Glassdoor: Who might be unhappy and open to change?

• Crunchbase: Who should I target right now based on market signals?

Great recruiters don’t choose one platform.
They orchestrate all of them.