73 freelance English-speaking jobs in Lisbon

  • Mindrift
  • Lisbon
  • April 1
Freelance Civil Engineer to design computational engineering problems requiring Python programming for solutions. Must have a Civil Engineering degree and Python proficiency for numerical validation.
  • Mindrift
  • Lisbon
  • April 18
LogoAbout the Role This is a freelance role for a Tendem project. ... Benefits Why this freelance opportunity might be a great fit for you?
  • Mindrift
  • Lisbon
  • April 17
LogoAbout the Role This is a freelance role for a Tendem project. ... Benefits Why this freelance opportunity might be a great fit for you?
  • Mindrift
  • Lisbon
  • April 4
Freelance Data Scientist to design and develop computationally intensive data science problems using Python and SQL. Must have 5+ years of experience, expertise in Python libraries (Pandas, NumPy, Scikit-learn), statistical analysis, and machine learning.
  • Mindrift
  • Lisbon
  • April 16
LogoAbout the Role This is a freelance role for a Tendem project. ... Benefits Why this freelance opportunity might be a great fit for you?
  • Mindrift
  • Lisbon
  • April 12
LogoAbout the Role This is a freelance role for a Tendem project. ... Benefits Why this freelance opportunity might be a great fit for you?
  • Mindrift
  • Lisbon
  • April 24
LogoFreelance AI trainer needed to design computational physics problems requiring Python programming. Must have a physics degree, Python proficiency, and experience with numerical simulation methods.
  • Mindrift
  • Lisbon
  • April 24
LogoFreelance 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.
  • Mindrift
  • Lisbon
  • April 18
LogoFreelance 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.
  • Mindrift
  • Lisbon
  • April 18
LogoFreelance 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.
  • Beats Medical
  • Lisbon
  • April 22
Join us as a Freelance Data Scientist (May/June – December 2026) We're looking for a data scientist to
  • Mindrift
  • Lisbon
  • April 24
LogoFreelance Agent Evaluation Engineer needed to create challenging tasks and evaluation criteria for AI coding agents within simulated environments. Requires experience in software development, testing, and Python.
  • Mindrift
  • Lisbon
  • April 10
LogoFreelance 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).
  • Visit.org
  • Lisbon
  • April 7
LogoVisit.org is looking for a passionate and ambitious Freelance In-Person Event Host in Lisbon, Portugal
  • Mindrift
  • Lisbon
  • April 24
LogoFreelance 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.
  • Mindrift
  • Lisbon
  • April 24
LogoFreelance 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.
  • Randstad Enterprise
  • Lisbon
  • April 16
chances of interviewing at Randstad Enterprise by 2x Sign in to set job alerts for "Recruiter" roles.Tech Freelance
  • Mindrift
  • Lisbon
  • April 27
LogoFreelance 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.
  • Mindrift
  • Lisbon
  • April 9
to $32/hour depending on your skills, experience, and project needsTake part in a flexible, remote, freelance
  • SPACE44
  • Lisbon
  • April 2
Senior Fullstack Developer will design, build, and maintain backend services and REST APIs using Node.js and develop frontend applications using React and TypeScript. You will own features across the full stack, from database schema to UI interaction.
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