79 freelance English-speaking jobs in Lisbon

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.

Electrical Engineer with Python expertise sought for part-time, project-based AI training. Design electrical engineering problems, evaluate AI solutions, and validate calculations using Python. Strong written English and 3+ years of experience required.

Freelance AI trainer needed to design computational engineering problems requiring Python programming for solution. Must have a degree in Electrical Engineering or related field and 2+ years of experience. Strong written English (C1+) is required.

Freelance AI Evaluation Engineer needed to create challenging coding test cases for AI systems. Requires 5+ years of Python development experience, full-stack development skills, and experience writing functional and integration tests.

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 or equivalent and 2+ years of experience.

Senior Game Developer needed for a 8-month contract to maintain, scale, and optimize the hit game Hole.io. Responsibilities include architecting and writing code, implementing performance optimizations, and identifying technical debt. Requires advanced Unity knowledge (7+ years), C# scripting, and experience with mobile game development.

We do provide more security than a pure freelance contract, as we work with a30-day notice period(on ... ambition to become the #1 B2B Marketing Agency worldwide in the next ten years.Work setup We work with freelance

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.

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 perks: autonomy, flexibility, and global collaboration. Potential for contract extension.

This flexible freelance role allows you to set your own schedule, making it an ideal supplement to your

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

This freelance, remote role offers complete flexibility, allowing you to set your own business hours.

Visualo.co seeks a freelance Business Development Partner to generate leads, build relationships, and close deals for creative and marketing services. This commission-based role involves identifying potential clients, presenting services, qualifying leads, and managing the sales process.

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.

Freelance work.

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

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.