Active Users: 265kDaily Payouts: $5,5M+

Where talent and opportunity meet.

Build your team and get discovered by over 10,000+ experts on CoTrain

Browse

Maya Chen

Senior Prompt Engineer

$150 - $250/hour

Builds and tunes multi-agent workflows for frontier AI teams. Ships evals, guardrails, and production-ready prompts.

RLHF Evaluation Lead

Design rubrics and grade model outputs for a frontier AI lab.

$150 - $250/hour
40 hr/weekPSTRemote
Apply now

Diego Alvarez

Conversion Copywriter

$90 - $160/hour

Crafts persuasive copy that sells — landing pages, lifecycle emails, and sales pages that lift signups.

Senior Prompt Engineer

Build and tune agent workflows for a Series B startup.

$120 - $200/hour
30 hr/weekESTRemote
Apply now

Priya Nair

RLHF Evaluation Lead

$140 - $240/hour

Designs rubrics and grades model outputs at scale. Runs labeling pipelines and QA for distributed teams.

Conversion Copywriter

Rewrite landing pages and lifecycle emails to lift signups.

$90 - $160/hour
20 hr/weekGMTRemote
Apply now

Sam Okoro

Product Designer, AI

$130 - $220/hour

Ships the 0→1 UI for multi-agent research products. Strong on systems, motion, and conversion.

ML Data Annotation Lead

Run a labeling pipeline and QA a distributed annotator team.

$110 - $180/hour
40 hr/weekCSTRemote
Apply now

Lena Fischer

Growth Marketing Strategist

$100 - $190/hour

Owns paid + lifecycle growth for AI-era platforms. Turns experiments into compounding pipeline.

Product Designer, AI

Ship the 0→1 UI for a multi-agent research product.

$130 - $220/hour
25 hr/weekPSTHybrid
Apply now

Tariq Hassan

ML Data Annotation Lead

$110 - $180/hour

Runs high-throughput labeling operations and QA. Builds annotator teams that ship clean, reliable data.

Growth Marketing Strategist

Own paid + lifecycle growth for an AI-era hiring platform.

$100 - $190/hour
30 hr/weekESTRemote
Apply now

Open roles

Look for Open Roles

CoTrain connects experts to high-paying work.

Maya Chen

Senior Prompt Engineer

San Francisco, USAEnglish
4.9Reviews
7yearsExperience
99%Success

I build and tune multi-agent workflows for frontier AI teams — evals, guardrails, and production-ready prompts that ship to real users.

Diego Alvarez

Conversion Copywriter

Lisbon, PortugalEnglish · Spanish
4.8Reviews
6yearsExperience
98%Success

I'm a conversion copywriter crafting persuasive copy that sells — landing pages, lifecycle emails, and sales pages that lift signups.

Priya Nair

RLHF Evaluation Lead

Bengaluru, IndiaEnglish
5.0Reviews
9yearsExperience
100%Success

I design rubrics and grade model outputs at scale, running labeling pipelines and QA for distributed evaluation teams.

Sam Okoro

Product Designer, AI

Lagos, NigeriaEnglish
4.9Reviews
8yearsExperience
100%Success

I ship the 0→1 UI for multi-agent research products — strong on design systems, motion, and the details that drive conversion.

Lena Fischer

Growth Marketing Strategist

Berlin, GermanyEnglish · German
4.7Reviews
6yearsExperience
97%Success

I own paid and lifecycle growth for AI-era platforms, turning structured experiments into compounding, predictable pipeline.

Tariq Hassan

ML Data Annotation Lead

Cairo, EgyptEnglish · Arabic
4.8Reviews
7yearsExperience
99%Success

I run high-throughput labeling operations and QA, building annotator teams that ship clean, reliable training data on deadline.

CoTrain.ai

The Future of Human Capability Starts Here