69 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 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 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.

domain expertise genuinely matters here Fully remote and flexible — work when and where it suits you Freelance

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

Simple task, remote, global participation.We are hiring freelance contributors worldwide to help us collect

Freelance work.

Company Overview SPACE44 builds and operates software systems for companies that need technology to work reliably in real, day-to-day operations. We work as long‐term engineering partners, embedding experienced engineers into client environments and taking responsibility for execution, stability, and ongoing improvement of production systems.

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.

OpportunityOutlier is looking for exceptional software engineers to help train generative AI models.This freelance

Job description Daily rate: 270€/day ❗Hybrid, 3 days/week on site, Lisbon --------------------- We are looking for an experienced IT Procurement Specialist to join its Software Procurement team in Portugal.

This freelance role is fully remote and offers flexible hours—you can work whenever works best for you.You

Location: Remote (Türkiye, Europe, USA, Canada) Type: Freelance (Only Commission-Based Structure) Language

are seeking a passionate and driven A&R Outbound Sales Representative to join our team on a remote, freelance

Middle School Cover Teachers with recurring availability to provide short-term, occasional cover on a freelance

Freelance Mechanical Engineer and Python expert needed for AI training projects. Design computational engineering problems, create Python-based solutions, and verify results. Requires a degree in Mechanical Engineering or related field, Python proficiency, and 2+ years of experience. Strong written English (C1+) is essential.

accessibility and usability Knowledge of Italian, Portuguese, or Spanish Any personal, academic, or freelance

and Primary Cover Teachers with recurring availability to provide short-term, occasional cover on a freelance

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, 2+ years of experience, and strong written English.

We are looking for a Senior Salesforce Marketing Cloud Developer (freelance) to deliver large and complex