Job title: Math Expert (US & International)

The future of AI — whether in training or evaluation, classical ML or agentic workflows — starts with high-quality data. At HumanSignal, we’re building the platform that powers the creation, curation, and evaluation of that data. From fine-tuning foundation models to validating agent behaviors in production, our tools are used by leading AI teams to ensure models are grounded in real-world signal, not noise. Our open-source product, Label Studio , has become the de facto standard for labeling and evaluating data across modalities — from text and images to time series and agents-in-environments. With over 250,000 users and hundreds of millions of labeled samples, it’s the most widely adopted OSS solution for teams working on building AI systems. Label Studio Enterprise builds on that traction with the security, collaboration, and scalability features needed to support mission-critical AI pipelines — powering everything from model training datasets to eval test sets to continuous feedback loops.We started before foundation models were mainstream, and we’re doubling down now that AI is eating the world. If you're excited to help leading AI teams build smarter, more accurate systems — we’d love to talk.

About the Role

HumanSignal is seeking highly qualified mathematics experts to contribute to cutting-edge AI development projects. This role involves evaluating, annotating, and validating mathematical content to improve AI model performance in mathematical reasoning and problem-solving.

Responsibilities

• Review and evaluate mathematical solutions for accuracy, rigor, and clarity
• Annotate mathematical reasoning steps and problem-solving approaches
• Validate AI-generated mathematical content across various difficulty levels
• Identify errors in mathematical logic, notation, and methodology
• Provide detailed feedback on mathematical explanations and proofs
• Work with problems spanning algebra, calculus, statistics, linear algebra, differential equations, and advanced mathematics

Qualifications

• Deep understanding of mathematical principles across multiple domains
• Strong analytical and critical thinking skills
• Excellent attention to detail and precision
• Ability to clearly articulate mathematical reasoning
• Experience with mathematical notation and LaTeX preferred
• Familiarity with various problem-solving methodologies
• Ability to work independently and meet deadlines

Work Details

• Flexible, project-based work - work on your own schedule
• Remote position - work from anywhere
• Variable hours based on project availability and your capacity
• Ongoing training and calibration provided
• Quality-focused environment with performance feedback

Ideal Candidate Profile

• Active researchers, professors, or recent graduates in mathematical fields
• Strong publication record or demonstrated mathematical expertise
• Experience in mathematical education, research, or industry applications
• Passion for advancing AI capabilities in mathematical domains

How to Apply

• Submit CV/resume highlighting mathematical qualifications
• Provide proof of advanced degree(s)
• Complete a brief mathematical assessment
• Participate in a qualification review

Company

HumanSignal is a leading provider of AI data annotation and labeling services, powering the development of next-generation AI systems. We work with top technology companies and research institutions to create high-quality training data. HumanSignal is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.