74 freelance English-speaking jobs in Lisbon

Freelance AI trainer needed to design computational physics problems requiring Python programming. Must have a physics degree, Python proficiency, and experience with numerical simulation methods.

Freelance AI trainer needed to design computational chemistry problems requiring Python programming. Must have a chemistry degree, Python proficiency, and experience with numerical methods in chemistry.

Remote (Portugal-based candidates preferred)Contract Length: 6 monthsStart: ASAPType: Contractor / Freelance

Freelance AI trainer needed to design computational physics problems requiring Python programming. Must have a physics degree, 2+ years experience, and strong Python skills (NumPy, SciPy, Sympy).

Freelance peer reviewers needed for civil, mechanical, and computer science journals. Must have a doctorate, at least two publications in the last two years, and strong analytical and writing skills.

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.

Freelance AI trainer needed to design computational physics problems requiring Python programming. Must have a degree in Physics or related field, 2+ years of experience, and strong Python skills.

Freelance AI trainer needed to design and develop computational biology problems requiring Python programming. Must have a biology degree, Python proficiency, and experience with biological data analysis and algorithms.

Visit.org is looking for a passionate and ambitious Freelance In-Person Event Host in Lisbon, Portugal

Graphic Designer – Global Brand – Figma - Porto (Hybrid) Global Designer Brand is now looking for freelance

$60,000.00-$100,000.00 1 week ago Portugal $203,320.00-$227,240.00 1 month ago Solution Architect - Freelance

Freelance AI trainer needed to design and develop computationally intensive statistical problems requiring Python programming. Must have a degree in Statistics or related field, 2+ years of experience, and strong written English.

Freelance AI trainer needed to design computationally intensive mathematical problems requiring Python programming. Must have a degree in Mathematics or related field, Python proficiency, and experience with numerical methods and symbolic computation.

Graphic & Digital Designer – Global Brand Global Fashion retail Brand is now looking for freelance designers

Freelance work.

to $32/hour depending on your skills, experience, and project needsTake part in a flexible, remote, freelance

Freelance English writers train AI models by crafting text that teaches AI reasoning, logic, and clarity. Contributors create original, fact-checked responses, collaborate with Quality Assurance Specialists, and adhere to style and quality standards.

Hybrid (Lisbon)Software Engineer (Python) - Agentic PlatformFull Stack Django Developer (Fully Remote)Freelance

interviewing at Randstad Enterprise by 2x Sign in to set job alerts for "Recruiter" roles.Tech Freelance

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.