58 freelance English-speaking jobs in Lisbon

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

$60,000.00-$100,000.00 1 week ago Portugal $203,320.00-$227,240.00 1 month ago Solution Architect - Freelance

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 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.

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.

Experienced IT Procurement Specialist needed for software procurement, contract management, and supplier negotiations. Minimum 5 years of experience in vendor management, contract negotiation, and international environments required.

America.This position can either be a permanent position or a fixed-term contract; both salary, no freelance

South America.This position can either be a permanent position or a fixed-term contract;both salary, no freelance

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

companies connects businesses with global, AI enabled talent across every contingent work type including freelance

Meeting bonus: EUR 25–50 per qualified meeting On-target monthly earnings: EUR 800–1,200+ Arrangement: Freelance

months per customer On-target earnings (OTE): EUR 4,000–5,000/month when hitting quota Arrangement: Freelance

Full Stack Data Analyst - Critical Data ProductsFull Stack Data Analyst - Critical Data ProductsTech Freelance

companies connects businesses with global, AI-enabled talent across every contingent work type including freelance

Lead QA Consultant to manage end-to-end testing across multiple development teams in a large-scale retail transformation program.

companies connects businesses with global, AI-enabled talent across every contingent work type including freelance