87 freelance English-speaking jobs in Lisbon

environment.Opportunities for growth and learning about global brands.Flexible schedules (Mondays to Sundays).Freelance

About the RoleThis is a freelance role for a Tendem project.

Freelance AI trainer needed to design mathematics problems, evaluate AI solutions, and validate calculations using Python. Must have a degree in Mathematics or related field, 3+ years of experience, strong Python proficiency, and excellent written English.

Physics Researcher needed for part-time, project-based AI training. Design physics problems, evaluate AI solutions, and validate calculations using Python.

internet; company‐sponsored benefits such as health insurance and PTO do not apply.Employment Type Freelance

of Generative AI by tapping into real‐world expertise from across the globe.About The Role This is a freelance

Quantum researchers with Python proficiency are sought to design computational physics problems requiring non-trivial reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics.

Freelance AI Evaluation Engineer needed to create challenging coding test cases for AI systems. Requires 5+ years of Python development experience, full-stack development skills, and experience writing functional and integration tests.

Electrical Engineer with Python expertise sought for part-time, project-based AI training. Design electrical engineering problems, evaluate AI solutions, and validate calculations using Python. Strong written English and 3+ years of experience required.

This role is ideal for someone who has worked in an agency, freelance, or multi-client environment and ... What We're Looking For Required: 2+ years of email marketing experience, preferably in an agency, freelance

of Generative AI by tapping into real-world expertise from across the globe.About The Role This is a freelance ... troubleshoot independentlyEnglish proficiency: Upper-intermediate (B2) or above (required)Benefits Why this freelance

Freelance mathematicians with a degree and 2+ years of experience are sought to design problems, evaluate AI solutions, and improve AI reasoning for leading tech companies.

Freelance Junior Journalist will train AI models to understand and generate human-like text. Tasks include crafting responses, generating prompts, defining scoring criteria, and ensuring quality.

Civil Engineer with Python expertise sought for part-time, project-based AI training. Design computational engineering problems requiring Python programming and numerical methods. Must have a Civil Engineering degree or equivalent and 2+ years of experience.

Portuguese Language Specialist (Portugal) - Freelance AI Trainer Project PortugalAre you a Portuguese

About the Role This is a freelance role for a Tendem project. ... Benefits Why this freelance opportunity might be a great fit for you?

About the Role This is a freelance role for a Tendem project. ... Benefits Why this freelance opportunity might be a great fit for you?

About the Role This is a freelance role for a Tendem project. ... Benefits Why this freelance opportunity might be a great fit for you?

Freelance optical engineer with Python experience needed to design and develop computationally intensive physics problems. Must have strong Python skills (Numpy, SciPy, Sympy) and experience with numerical simulation methods.

Senior Consultant with 3+ years at a top-tier strategy consulting firm (McKinsey, BCG, Bain, etc.) needed to design and evaluate AI-powered consulting project scenarios.