Every moment of hiring
in one place
Sourcer surfaces hidden talent. Probe evaluates AI-era candidates. And HR Platform unifies the whole flow. Cofa sets a new bar for hiring in the AI era.
Trusted by
Bookending hiring, together
Sourcer surfaces candidates and Probe evaluates how they think. Everything flows naturally through the integrated ATS, HR Platform.
Sourcer
AI sourcing agent- J
Jihoon Jung · ML · 7y
arXiv + PyCon
Fit
94
- S
Suhyun Lee · Backend · 6y
GitHub · 12 PRs
Fit
88
- D
Doyoon Kim · ML · 5y
NeurIPS 2024
Fit
83
Reach hidden talent first
Reconstruct candidates who don't show up on LinkedIn — from conferences, papers, open source, patents, and communities. Personalized outreach drafts included; nothing sends until you approve it.
- Shadow Sourcer: reconstruct hidden candidates
- Fit Analyzer: fit score with rationale
- Cold Outreach: personalized drafts
- Approval gate before any send
Probe
AI evaluation moduleReviewer · timeline
Candidate #2024-0142 · Backend
- 00:04
Initial prompt
Problem framingDecomposed into 5 requirements · output format specified
- 00:18
Test run
Validation3 cases pass · 1 fails → debug
- 00:31
Tool switch
Tool useClaude → GPT-5 (code review compare)
- 00:47
Edited AI output
Critical thinkingRenamed variables, hardened error handling before paste
Evaluate the process, not just the result
Give every candidate the same top AI model for free, and auto-record every interaction. Reviewers see both the output and a timeline of how the person thought.
- 5 evaluation areas mapped
- Automatic process capture
- Fair, equal environment
- Standardized measurement
End-to-end ATS, HR Platform
An ATS that connects naturally with Sourcer and Probe
From sourcing to offer all in one line
Candidates Sourcer surfaces flow straight into HR Platform's pipeline. And Probe slips into the assessment step naturally.
- 01Sourcer
Surface hidden talent
Cross five public sources to build a candidate card.
- 02Sourcer
Fit · outreach
Score the fit and prepare a 1:1 personalized message draft.
- 03HR PlatformProbe
Enter pipeline · screening
Replies are auto-promoted into the applicant stage.
- 04HR Platform
Interview · offer
Scorecards and interview kits help the team decide together.
Probe
Slot it into the assessment stage of the pipeline to auto-record tasks, process, and results. Probe also runs on its own.
In the AI era, evaluation has to change
Don't measure tool fluency — measure the thinking: how someone explains a problem to AI, validates the output, and chooses the right tool. Beyond the deliverable, “how they solved it” is captured automatically, so reviewers can see the whole process at a glance.
Probe
Look at the process, not just the result
We give every candidate access to top-tier AI models for free, and auto-record every interaction while they solve. Reviewers see the deliverable alongside a timeline of how the person actually thought.
Maps to five evaluation areas
Problem framing · prompting · validation · tool use · output. Each area is wired to auto-collected signals so it can actually be measured.
Process captured automatically
Candidates don't need to write it down — prompts, tool switches, and test runs are all recorded on the timeline.
A level playing field
Top Claude, OpenAI, and Gemini models are free to every candidate. Personal subscriptions don't decide outcomes.
Not locked to any tool
Solvable from the built-in environment alone, or extendable via MCP to outside tools. Tool choice itself becomes a signal.
Reviewer · timeline
Candidate #2024-0142 · Backend
- 00:04
Initial prompt
Problem framingDecomposed into 5 requirements · output format specified
- 00:18
Test run
Validation3 cases pass · 1 fails → debug
- 00:31
Tool switch
Tool useClaude → GPT-5 (code review compare)
- 00:47
Edited AI output
Critical thinkingRenamed variables, hardened error handling before paste
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