71 freelance English-speaking jobs in Lisbon

At Toloka, we connect smart, curious people from around the world with freelance online tasks that train ... Take part in a part-time, remote, freelance project that fits around your primary professional or academic ... questions when needed Genuine interest in technology and artificial intelligence Benefits Why this freelance

We are looking for a freelance Senior QA Engineer with experience in Siebel to join a critical project ... Basic SQL knowledge Understanding of Order Management processes Project Details Contract: Freelance

Nortenho Dialect Specialist - Freelance AI Trainer ProjectPortugal OverviewAre you a Nortenho language ... Employment type: Freelance / Contract Workplace type: Remote Seniority level: Entry Level ResponsibilitiesConverse

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

Early Years - Cover Teacher (Freelance / Occasional Cover) Location: Lisbon, PTInspired Education is ... and Primary Cover Teacherswith recurring availability to provide short‐term, occasional cover on a freelance

Flexible, fully remote freelance work that fits your current commitmentsApply your migration expertise

Portugal/ Remote / Freelance or PermanentWe are looking for a Senior ML Engineer / Data Scientist who

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.

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.

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 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 physics problems requiring Python programming. Must have a physics degree, 2+ years experience, and strong Python skills (NumPy, SciPy, Sympy).

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

Join Cross Border Talents as a Freelance Recruiter and work with a global network of professionals across

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 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 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 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 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.