US$30 - US$80
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89,000+ live jobsMathematics Expert (Spain)
Remote from Spain·Part-time·Added 4 months ago (last checked 29 Oct)
Our summary
- Salary
- US$40 an hour
- Hours
- 20 hours a week
- Work mode
- Remote from Spain
- Contract
- Fixed-term, part-time hours
- English
- Required
- Education
- Master's degree






Visa options
The ad doesn’t mention sponsorship
Not a refusal, but not a yes. Worth asking in your first message.
Skills
Requirements
What we're looking for
Master's or PhD in Mathematics or a closely related field
Strong research or industry experience involving mathematical modeling, proof-based reasoning, applied mathematics, or computational mathematics
Strong Python skills; comfort with libraries such as numpy, scipy, pandas, or similar
Solid grasp of algorithms, numerical methods, and computational approaches
Ability to design original, difficult problems that mirror real mathematical workflows
Excellent attention to detail and technical writing skills in English
Nice to have
Experience with symbolic math systems, theorem provers, optimization solvers, or other mathematical software
Background in olympiad-level, graduate-level, or research-level problem design
Experience evaluating model reasoning, benchmarking, or technical assessment design
Pay & benefits
What you'll get
Compensation: Up to 40 USD / hr
The role
Help shape the future of AI by designing challenging math problems that test and improve reasoning in cutting-edge models.
We create high-quality STEM training data for frontier AI models. Our data is used directly in training and evaluation pipelines at leading AI labs to improve model reasoning in technical domains.
We are looking for experts in Mathematics to design rigorous, deterministic problems that are genuinely challenging for state-of-the-art AI systems. Each problem must have exactly one verifiable correct answer and be submitted together with a complete, verified solution.
What you'll do
Design advanced mathematical problems for frontier AI training and evaluation
Create deterministic problems with exactly one correct answer
Write complete, verified solutions and clearly document the reasoning process
Develop problems that test deep mathematical reasoning, not just memorization
Where relevant, use Python or specialized tools to build computational workflows
Ensure all outputs are technically precise, reproducible, and well-written in English
How you'll work
Location: Remote
Type: Contract / Part-time
Commitment: 20 hours per week
Project duration: 2 months, with potential extension
Availability: Immediate start
About Anyone AI
Anyone AI is an EdTech company that develops AI-powered educational tools and platforms. Based in San Francisco, the company focuses on leveraging artificial intelligence to enhance learning experiences, offering products that range from AI tutoring systems to adaptive learning technologies. While the company is relatively young, it has established a presence in the AI education space, working with experts across various domains to train and refine its AI models.
Anyone AI has a significant remote-first presence in Spain, hiring experts in fields like mathematics, physics, biology, and software engineering to contribute to AI training and development. The company offers fully remote positions within Spain, making it an attractive option for international professionals seeking flexible work arrangements. With a focus on AI model training and development, Anyone AI provides opportunities for experts to apply their knowledge in a cutting-edge field, though its brand recognition is limited outside of niche AI and EdTech circles.
- Industry
- EdTech
- Employees
- 11–50
- Headquarters
- San Francisco, USA
Good to know if you are moving
- All Spain-based roles are fully remote, offering flexibility for international professionals.
- The company hires domain experts (e.g., mathematics, physics, biology) to train AI models, making it a unique opportunity for academics and specialists.
- As a US-based company, salaries and contracts may be structured under Spanish employment laws, but specifics should be confirmed during the hiring process.
- The company is small, so employees may have a direct impact on AI training processes and product development.
- Working with a US-based company from Spain may require managing time zone differences, though remote work mitigates this.
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