75 freelance English-speaking jobs in Lisbon

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.

Site Reliability Engineer needed for a B2B or freelance contract role in Lisbon. Requires strong DevOps skills (Jenkins, Git, Bitbucket), Linux proficiency, SQL expertise, and experience with monitoring tools (Splunk, Dynatrace).

Senior Consultants with 3+ years of experience at top-tier firms (McKinsey, BCG, Bain, etc.) are needed to build realistic consulting project environments for AI training.

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 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.

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.

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

results-driven attitude Ability to work independently and manage your own territory Status:independent / freelance

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

Freelance AI trainer needed to design and develop material engineering problems requiring Python programming. Must have a degree in Material Science or related field, Python proficiency, and 2+ years of professional experience.

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.

-5 years of professional experience as a video editor, post-production specialist, or similar role (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.

Job Description We are looking for a part time freelance Senior Compensation Analyst to implement, manage

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

This is a one-day-per-week freelance engagement to start, with real scope to grow for the right person

to $30/hour depending on your skills, experience, and project needs.Take part in a flexible, remote, freelance

Freelance Data Analyst (Python) - AI TrainerStudent Intern - Data Analyst & AdministratorWe're unlocking

platform policies and brand guidelines.Hard Skills1–5 years of experience in video editing (internships, freelance