The best engineers aren't applying.
They're shipping code.
Search real GitHub activity to find developers by what they've actually built. Not job titles. Not keywords. Not stale LinkedIn profiles. Describe the specialist you need like you'd tell a colleague.
Starting at $49/mo — no recruiter fees, no contracts
The best specialists don't have the job title you're searching for.
You need someone who's built payment infrastructure at scale, not someone who lists "Python" on their resume. But search LinkedIn for "payment systems engineer" or "real-time collaboration developer" and you'll get zero useful results. Ask a recruiter to find someone who's deployed ML models to production and they won't know where to start. These roles don't map to job titles or boolean search strings.
The engineer who maintains critical open-source infrastructure? They're heads-down writing code, not updating their LinkedIn. Agency recruiters charge $35,000 per placement and can't evaluate technical depth. The talent pool exists. Your tools just can't see it.
You shouldn't need a six-figure budget to find a specialist.
See it in action
"Built Stripe integration at scale" isn't a LinkedIn filter. But it is a search you can run on Riem.
Good specificity. A couple things to sharpen results:
Are you looking for someone who’s contributed to the editor frameworks themselves, or someone who’s built production features on top of them? And do you need experience with the underlying sync and conflict resolution layer, or is the editor integration enough?
Showing the top 10 results ranked by match score.
Tip: You can also paste an entire job description instead of typing a query.
Alex Rivera
arivera-dev
Senior engineer building real-time document collaboration. Core contributor to a Yjs-based sync engine. Previously editor team at a Series B dev tools company.
Contribution Summary
Built and maintained a CRDT-based real-time sync engine handling 50K+ concurrent document sessions. Contributor to Yjs ecosystem tooling. Deep experience with ProseMirror node views, collaborative cursors, and offline-first conflict resolution.
Top Repos
Why Riem.ai
Find specialists by their actual work
Need someone who's built real-time collaboration tools? We find engineers who've actually committed to the specific frameworks your team depends on. Not keyword matches. Contribution-verified matches across 30M+ monthly GitHub events.
Surface talent invisible to traditional tools
The infrastructure engineer with 47 followers who maintains a library your product depends on. The ML engineer at a 12-person startup who's deployed models serving millions of requests. Our scoring finds high-quality contributors with low social visibility.
Describe the experience. Skip the boolean strings.
Say "someone who's built search infrastructure from scratch" or "ML engineers who've actually deployed models to production." The AI maps your description to the right repositories and contribution patterns.
Replace your $35,000 recruiter fee
Agency recruiters charge $35,000 per placement. LinkedIn Recruiter is $1,000/seat. Riem starts at $49/month.
30M+
GitHub events analyzed monthly
0–100
match score for every candidate
70%
of engineers are passive candidates
10x
cheaper than LinkedIn Recruiter
How it works
Describe the specialist you need — or paste a job description
Type a plain-English description like "engineers who've built real-time collaborative editing" — or paste a job description for a senior infrastructure engineer role. The AI extracts the requirements that matter and asks follow-up questions to narrow your search.
Review scored candidates with contribution summaries
Within seconds, get a ranked list with match scores, top repos, and a plain-English summary of what each person has actually been building. Click any candidate to explore their full profile, activity timeline, and "Underrated" status.
Reach out
Generate an outreach email written from the candidate's actual commits and PRs. Personalized from real contribution data, not a mail-merge template. Free on every plan.
Features
Search, evaluate, and reach candidates. All backed by real contribution data.
Search in plain English
Describe the specialist you need, like you would to a colleague. "engineers who've built real-time collaboration features" or "Rust developers working on performance-critical infrastructure." No boolean strings.
Contribution summaries, not raw data
Every candidate comes with a plain-English summary of what they've been building, generated from their actual commits and PRs.
Find the specialists nobody else can reach
Our "Underrated" scoring finds specialists with great code and low social visibility. The ML infrastructure expert with 50 followers who's never been contacted by a recruiter.
Outreach emails from their actual code
Generate personalized emails written from a candidate's commits and PRs, not a mail-merge template. Free on every plan.
Paste a job description, skip the setup
Already have a JD? Paste the whole thing. The AI identifies skill pillars — frameworks, infrastructure, domain expertise — and finds engineers who match across multiple dimensions. No keyword extraction needed.
Only active contributors
Every candidate has pushed code in the last 30 days. No stale LinkedIn profiles from 2019, no career-changers who stopped coding. You're reaching out to engineers who are actively building right now.
Pricing
Repeat searches within 7 days are free (cached). No gotchas.
Starter
For individual recruiters
- ✓ Source for 5 roles per month
- ✓ 10 enrichments/month
- ✓ Unlimited outreach emails
Pro
Most popularFor growing teams
- ✓ Source for 25 roles per month
- ✓ 40 enrichments/month
- ✓ Unlimited outreach emails
Scale
For recruiting agencies
- ✓ Source for 75 roles per month
- ✓ 150 enrichments/month
- ✓ Unlimited outreach emails
Enterprise
Hiring at scale? Unlimited searches, dedicated support, and custom pricing.
Duplicate searches within 7 days hit cache (free).
What sourcing actually costs
Most companies don't add it up. Here's what sourcing actually costs.
Agency recruiter
20-25% of first-year salary, per hire
In-house technical sourcer
Salary + benefits + tooling, per year
Contract sourcer
Dedicated freelance recruiter, per month
LinkedIn Recruiter
Corporate seat, per year
Riem.ai
Unlimited outreach, 20-250 searches/month
One agency placement for a $175K engineer costs more than 5 years of Riem.ai Pro.
Questions
Where does the candidate data come from?
Public GitHub events via GH Archive: commits, pull requests, code reviews, and issue activity. We analyze 30M+ events per month. We never access private repos or non-public data.
How is this different from LinkedIn Recruiter?
LinkedIn matches on self-reported job titles and skills. Try searching for "payment systems engineer who's built Stripe at scale" or "ML engineer who's deployed models to production." LinkedIn can't filter on actual experience. Riem matches on real code contributions to specific repositories and projects, starting at $49/mo.
Why not just use a recruiter?
Agency recruiters charge 20-25% of first-year salary. For a $175K engineer, that's $35,000-$44,000 per hire. An in-house sourcer costs $130K-$170K/year fully loaded. Riem gives you the sourcing pipeline for $49-$399/month. You keep the relationship, the context, and the savings.
Can I just paste a job description instead of writing a query?
Yes. Paste your full job description, an internal requirements doc, or even a candidate's resume. The AI extracts the technical requirements, frameworks, and experience signals automatically and finds matching engineers. No need to rewrite anything.
The specialist you need has already built it. We'll find them.
$49/mo. Not $35,000 per hire. Find hard-to-source technical talent matched on real code.
Start sourcing