Sarah Chen
ML Engineer
James Wilson
PhD Physics
Maria Garcia
Data Scientist
Alex Kumar
AI Researcher
Emily Zhang
NLP Expert
David Park
Computer Vision
Lisa Wang
ML Ops Engineer
Tom Brown
Research Engineer
Anna Lee
PhD Mathematics
Michael Chen
Deep Learning
Sophie Taylor
AI Safety
Ryan Kim
Robotics Engineer
Jessica Wu
PhD Linguistics
Daniel Smith
Systems Architect
Rachel Green
ML Researcher
The AI Platform for
Human Intelligence
AI-powered recruiting for startups and enterprises across IT, healthcare, finance and construction — and the expert network training frontier AI.
Trusted by teams building frontier AI
What we do
Hiring is the highest-leverage decision a company makes. We make it fast, rigorous and fair.
Source
01Our AI engine finds the people job boards never surface — engineers, clinicians, analysts and site leads across 150+ countries — and reaches out within hours of a brief.
Vet
02Aria, our AI interviewer, screens every candidate live: structured, proctored, in 50+ languages. You read a scored report, not a résumé.
Place
03A shortlist in 48 hours. We run scheduling, references, offers and compliance, so a first hire or a fiftieth lands without slowing the team down.
Industries
Built for the roles that are hardest to fill.
One platform, tuned per industry: the interview rubric, the credential checks and the sourcing pools all change with the role.
For startups
From first hire to Series C.
Founders don't have a talent team. We are one. Embedded recruiting on a flat monthly retainer, Aria-screened shortlists in 48 hours, and no placement fee surprises.
- Flat monthly retainer, cancel any time
- Founding engineers, GTM and ops hires
- Comp benchmarks and offer support included
IT & Engineering
01Backend, ML, infra, security and product roles, screened by an interviewer that actually probes system design.
- Software engineers
- ML & data
- DevOps & SRE
- Product & design
Healthcare
02Clinical and allied health talent with credential verification built into the vetting flow.
- Nurses & clinicians
- Allied health
- Health IT
- Medical affairs
Finance
03Analysts, quants, accountants and compliance hires for fintechs, funds and finance teams.
- Analysts & quants
- Accounting & FP&A
- Risk & compliance
- Fintech engineering
Construction
04Project managers, engineers, estimators and site leadership, vetted for certifications and safety records.
- Project managers
- Civil & structural
- Estimators & QS
- Site supervisors
Platform
One platform. Three engines.
Aria interviews, Nexus matches, Forge turns expertise into training data. Together they run recruiting end to end.
AI interviewer
Aria
Interviews every candidate live: structured technical and behavioural screens in 50+ languages, proctored, scored in real time.
- Adaptive follow-ups that probe depth, not keywords
- Frontier-grade proctoring and anti-cheat
- Scored reports you can compare side by side
Hello! I'm Aria, Think5's AI interviewer. Welcome, I'm excited to get to know you. Could you briefly introduce yourself?
YouMatching engine
Nexus
Matches candidates to roles on verified skills, Aria scores and availability across every industry we serve.
- Shortlist in 24–48 hours
- Credential and licence verification per industry
- Continuous quality scoring from real outcomes
Matches · Senior Backend Engineer
Ranked by fit- PN
Priya Nair
Staff engineer · ex-Stripe · Berlin
96Aria94 - DK
Daniel Kim
Senior backend · fintech · remote
93Aria91 - AO
Amara Okafor
Platform lead · payments · London
90Aria89 - LM
Lucas Meyer
Backend · distributed systems · Munich
88Aria87
Match rationale · Priya Nair
Weighted on the role brief · updated 2m ago
- Skills, verified by Aria96
- Experience fit92
- Compensation alignment88
- Availability & location100
- Aria interview
- 94 · system design, depth
- References
- 2 of 2 complete
- Comp band
- $195–220k · inside band
- Start
- 4 weeks · notice served
Sourcing · live
AI training data
Forge
Turns our vetted expert network into high-quality training data for frontier labs: RLHF, SFT, evaluations and red teaming.
- RLHF and SFT pipelines
- Domain experts: MDs, JDs, PhDs, engineers
- Managed QA and delivery, 24/7
RL environment · Clinical reasoning
Held-out eval- 1GPT-572.4%+3.1
- 2Claude Opus 4.770.9%+2.6
- 3Gemini 3 Pro66.2%+1.8
- 4Open-weights baseline51.7%—
Run details · Batch 4471
DeliveringItems
3,120
QA pass
99.7%
Agreement
0.91
Experts
48 MDs
Expert QA · items 2,801–2,896
pass · review · flag
Throughput · items / hr
412
Expert QA · live
reviewing now · 3 of 3 must agree
AI training data
The same vetted network also trains frontier models.
Labs use Think5 experts — MDs, JDs, PhDs and senior engineers — to produce preference data, evaluations and red-team findings. Forge runs the pipeline; Aria has already vetted the people.
- 10M+
- Data points
- 99.7%
- Quality score
- 500+
- Expert contributors
- 24/7
- Operations
How it works
From brief to signed offer, end to end.
We don't hand you a list of names. We run the whole hiring workflow and you make the final call.
- 1
Brief us
Role, team, comp band and what great looks like. A 30-minute call or a job description is enough to start.
- 2
AI sources, Aria vets
Our engine reaches candidates across 150+ countries. Aria interviews every one of them live and scores the results.
- 3
Shortlist in 48 hours
You get a ranked shortlist with interview recordings, scored reports and verified credentials. No résumé piles.
- 4
Place and onboard
We run scheduling, references, offers and compliance through to day one, then keep the pipeline warm.
- 1,000+
- Interviews daily
- 48h
- To shortlist
- 1%
- Acceptance rate
- 150+
- Countries covered
We had three founding engineers signed in five weeks. Every candidate Think5 sent had already been through a real technical interview, so our team only spoke to people worth speaking to.
Get started
Ready to make your next hire the right one?
Whether you're a founder making a first hire, an enterprise scaling a team, or a lab that needs expert data, we're here to help.