144 freelance English-speaking jobs in Spain

Freelance contract/ Permanent contractHybrid working modelInternational and multicultural environment.Frequent

Benefits What we can offer Freelance project‑based collaboration via the Mindrift platform (powered by

Benefits What we can offer Freelance project‑based collaboration via the Mindrift platform (powered by

About The Role This is a freelance role for a Tendem project.

About The Role This is a freelance role for a Tendem project.

Physics Researcher needed for part-time, project-based AI training. Design physics problems, evaluate AI solutions, and validate calculations using Python. Degree in Physics or related field and 3+ years of experience required. Strong written English and Python proficiency necessary.

Train AI models to understand and generate human-like text. Craft responses, generate prompts, define scoring criteria, and ensure quality. Requires a Bachelor's degree in a related field, at least 1 year of experience, strong written English (C1/C2), and a stable internet connection.

Required Skills and Qualifications Demonstrated expertise in Krita with a professional or extensive freelance

Contract Type Freelance Flexible model (project-based / success fee) Immediate availability preferred

About The Role This is a freelance role for a Tendem project.

Coordinate and manage an international team of freelance and in-house editors, writers, translators and

If you are interested and available for this opportunity as freelance contractor, please share your CV

Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment.

Desirable Profile Freelance recruiters or boutique agencies Consultants, advisors, or fractional leaders

Desirable Profile Freelance recruiters or boutique agencies Consultants, advisors, or fractional leaders

Desirable Profile Freelance recruiters or boutique agencies Consultants, advisors, or fractional leaders

Desirable Profile Freelance recruiters or boutique agencies Consultants, advisors, or fractional leaders

Desirable Profile Freelance recruiters or boutique agencies Consultants, advisors, or fractional leaders

Senior Consultant with 3+ years at a top-tier strategy consulting firm needed to design and evaluate AI-powered consulting project scenarios.

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