Posted:
1/4/2026, 6:41:51 AM
Location(s):
San Francisco, California, United States ⋅ California, United States
Experience Level(s):
Junior ⋅ Mid Level ⋅ Senior
Field(s):
Operations & Logistics
Workplace Type:
Remote
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.
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.
Up to $110 USD/hour based on qualifications and project complexity
Candidates must hold degrees directly in mathematics or mathematically-intensive fields. Acceptable programs include:
Interested candidates should be prepared to:
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.
Website: https://humansignal.com/
Headquarter Location: San Francisco, California, United States
Employee Count: 11-50
Year Founded: 2019
IPO Status: Private
Last Funding Type: Series A
Industries: Artificial Intelligence (AI) ⋅ Data Collection and Labeling ⋅ Machine Learning ⋅ Open Source ⋅ Software