Python
Java
Go
+7
Software Development
Software Architecture
Debugging
Observability
Code Review
Quality Assurance
AI Evaluation
Remote contractor role building coding-agent benchmark tasks from production-like repositories: define utility and safety requirements, develop visible and hidden test suites, and analyse rollouts from frontier agents such as Claude Code and Codex. 8+ years experience, 4-8 week engagement, 20 hrs/week with 4-hour PST overlap.
Python
Docker
FastAPI
+8
Flask
Django
Git
REST API
Microservices
Backend Development
API Development
AI Evaluation
Remote contractor role on a frontier AI data initiative: build Python backends that replicate SaaS tools (Slack, Linear, Jira, Notion, Gmail), author realistic long-horizon tasks from mined workflows, and write evaluation rubrics used to train and evaluate AI agents. $300 per approved task, 2-3 week engagement.
Segmentation
CT
MRI
+12
Histopathology
Annotation
X-ray
Compliance
Radiology
Nursing
Research
Calibration
Onboarding
Image Segmentation
Medical Annotation
Guideline Compliance
You'll draw precise segmentation masks over anatomical structures in CT scans, MRI slices, X-rays, and histopathology slides using DICOM-compatible tools such as OHIF Viewer or ITK-SNAP.
AI
Accuracy
Instruction Following
+10
Annotation
Writing
Calibration
Analysis
Verification
Summarization
Large Language Models
Language Models
Prompt Evaluation
Creative Writing
You'll evaluate prompt-response pairs generated by large language models, scoring them across dimensions like factual accuracy, instruction-following, coherence, and appropriate refusal behavior.
Robotics
AI
Precision
+12
Annotation
Quality Assurance
Reasoning
CAD
Modeling
GIS
Interpretation
Data Classification
Object Detection
Bounding Boxes
Scale AI
Spatial Reasoning
You'll annotate 3D point cloud data captured by LiDAR sensors, placing tight cuboid bounding boxes around objects like vehicles, pedestrians, cyclists, and static obstacles. Data originates from autonomous vehicle test drives and robotics platforms.
Support AI project contributors by onboarding new participants, answering questions in their native language, communicating project updates, and acting as the bridge between contributor communities and project managers. Earn $320/month in this temporary remote role with potential future full-time opportunities.
Bioinformatics
AI
Biology
+10
Annotation
Research
Reasoning
Flexible
Accuracy
Documentation
Computational Biology
Content Creation
Data Annotation
Technical Specifications
Our global AI Community is a vibrant network of more than one million contributors from diverse backgrounds who help customers collect, enhance, train, translate, and localize content to build better AI models.
Location: Latin America (Mexico, Brazil, Argentina, Colombia, Chile, Peru, Costa Rica, Ecuador, Uruguay, and other LATAM countries) Project Type: Egocentric Video Collection Work Mode: Remote + Field Recording Duration: Flexible (10–40 Hours per Week) About the Project…
We're looking for engineers who have shipped production search systems (especially agentic ones now that we're in the era of LLMs and agents) and are thinking hard about the requirements and optimizations of those systems.
Marketing
AI
Infrastructure
+12
Engineering
Microsoft Teams
MCP
Make
Communication
Leadership
ARR
APIs
Alignment
Messaging
Sales
Strategic Thinking
Our mission is to bring clarity and control to the world's most complex codebases. AI is accelerating code creation, but the infrastructure to understand, oversee, and evolve that code hasn't kept pace.
AI
Healthcare
Writing
+10
Accuracy
Reasoning
Diagnosis
Planning
Pharmacology
Nursing
Medical Reasoning
Clinical Diagnosis
Treatment Planning
Patient Safety
Medical Experts (doctors, nurses, PAs, etc.) help train and evaluate how AI models reason about clinical and healthcare topics in a variety of ways.
Remote freelance role reviewing and labeling data on physical activity, exercise, and movement patterns (wearable sensor data, logs, video, or text) to support AI/health models. Annotate activity type, intensity, and movement quality. 8-week contractor engagement.
English
AI
Annotation
+12
Training
Reporting
Calibration
Operations
Management
Triage
Assurance
Quality Assurance
Slack
Channels
Webinars
Spreadsheets
Location: Remote Type of contract: Freelance Languages required: English Hourly Rate: Include the rate you are comfortable with on your CV. About ProlificProlific is not just another player in the AI space. We are building the biggest pool of quality human data in the world.
Remote freelance role labeling and evaluating data on food intake, dietary patterns, and nutrition information to support AI models for nutrition tracking, coaching, or research. Annotate food items, portions, and nutrient content. 8-week contractor engagement.
Remote freelance role reviewing and annotating text, audio, or survey data on mood, stress, and emotional states to support responsible AI in mental health. Apply validated frameworks and safety-escalation protocols. 8-week contractor engagement.
Remote freelance role annotating and evaluating sleep-health data (sleep-tracker data, logs, self-reports) to support AI models focused on sleep health. Annotate sleep stages, quality indicators, and disturbances. 8-week contractor engagement.
Remote freelance role evaluating LLM outputs on health coaching and behavior change. Assess AI-generated coaching conversations for accuracy, safety, empathy, and effectiveness against best-practice coaching frameworks. 8-week contractor engagement.
AI
English
Norwegian
+12
Testing
Cybersecurity
Machine Learning
RLHF
DPO
Engineering
Analysis
Psychology
Acting
Writing
AI Safety
Language Skills
Fluent Language Skills Required: English & Norwegian. Native fluency in English and Norwegian is required for this position. Why This Role Exists At Mercor, we believe the safest AI is the one that’s already been attacked — by us.
AI
English
Danish
+12
Testing
Cybersecurity
Machine Learning
RLHF
DPO
Engineering
Analysis
Psychology
Acting
Writing
AI Safety
Language Skills
Fluent Language Skills Required: English & Danish. Native fluency in English and Danish is required for this position. Why This Role Exists At Mercor, we believe the safest AI is the one that’s already been attacked — by us.
AI
English
Finnish
+12
Testing
Cybersecurity
Machine Learning
RLHF
DPO
Engineering
Analysis
Psychology
Acting
Writing
AI Safety
Language Skills
Fluent Language Skills Required: English & Finnish. Native fluency in English and Finnish is required for this position. Why This Role Exists At Mercor, we believe the safest AI is the one that’s already been attacked — by us.
AI
English
Swedish
+12
Testing
Cybersecurity
Machine Learning
RLHF
DPO
Engineering
Analysis
Psychology
Acting
Writing
AI Safety
Language Skills
Fluent Language Skills Required: English & Swedish. Native fluency in English and Swedish is required for this position. Why This Role Exists At Mercor, we believe the safest AI is the one that’s already been attacked — by us.
AI
English
Thai
+12
Testing
Cybersecurity
Machine Learning
RLHF
DPO
Engineering
Analysis
Psychology
Acting
Writing
AI Safety
Language Skills
Fluent Language Skills Required: English & Thai. Native fluency in English and Thai is required for this position. Why This Role Exists At Mercor, we believe the safest AI is the one that’s already been attacked — by us.
AI
English
Portuguese
+12
Testing
Cybersecurity
Machine Learning
RLHF
DPO
Engineering
Analysis
Psychology
Acting
Writing
AI Safety
Language Skills
Fluent Language Skills Required: English & Portuguese (global, excluding Brazilian Portuguese). Native fluency in English and Portuguese (global, excluding Brazilian Portuguese) is required for this position.
AI
English
Indonesian
+12
Testing
Cybersecurity
Machine Learning
RLHF
DPO
Engineering
Analysis
Psychology
Acting
Writing
AI Safety
Language Skills
Fluent Language Skills Required: English & Indonesian. Native fluency in English and Indonesian is required for this position. Why This Role Exists At Mercor, we believe the safest AI is the one that’s already been attacked — by us.
