65 freelance English-speaking jobs in Lisbon
Freelance Recruitment Partner (Mass Hiring)
- David Kennedy Recruitment
- Lisbon
- July 22
Lean / Six Sigma Black Belt Expert - AI Trainer - Freelance - 8-20 hrs/week - Remote
- 10x.Team
- Lisbon
- July 10
Updated: 07 July 2026 Freelance | 8–20 hrs/week | Remote (EU/UK) Are you an experienced Lean / Six Sigma ... Join 10x Team as a Freelance Lean / Six Sigma Black Belt Expert – AI Trainer and put your process improvement ... Flexible, project‐based freelance assignments – 100% remote Directly influence how AI systems understand ... NOTE At 10x, There Are Two Types Of Opportunities Traditional freelance missions: These are regular project‐based
Freelance Peer Reviewer - Gonorrhea
- Cactus Communications
- Lisbon
- June 18
Freelance peer reviewers with a PhD/MD and two recent publications in Gonorrhea research are needed to assess manuscript novelty, study design, literature review, results, and provide constructive feedback.
Freelance Peer Reviewer - Pediatric hematology
- Cactus Communications
- Lisbon
- August 10
Seeking freelance Peer Reviewers in Pediatric Hematology. Requires a PhD/MD or equivalent, two recent publications, and expertise in research methodology. Duties include assessing novelty, study design, literature, and conclusions to provide constructive feedback.
Freelance Peer Reviewer - Blood disorders
- Cactus Communications
- Lisbon
- June 18
Freelance peer reviewers with a PhD/MD and two recent publications in blood disorders are needed to assess manuscript originality, study design, literature review, results, and provide constructive feedback.
Freelance Peer Reviewer - Critical care nursing
- Cactus Communications
- Lisbon
- August 10
Seeking freelance Peer Reviewers for critical care nursing journals. Requires a Doctorate or equivalent, two recent publications, and expertise in research methodology. Responsibilities include assessing novelty, study design, literature, and conclusions.
Alentejano Dialect Specialist - Freelance AI Trainer Project
- Meridial
- Lisbon
- June 28
Employment type: Freelance / Contract Workplace type: Remote Seniority level: Entry Level #J-18808-Ljbffr
Freelance Peer Reviewer - Transplant and Reconstructive surgery
- Cactus Communications
- Lisbon
- August 10
Seeking researchers or retired researchers for freelance peer review in Transplant and Reconstructive surgery. Requires a PhD/MD or equivalent, two recent publications, and strong analytical skills. Responsibilities include assessing novelty, methodology, and conclusions.
Freelance Peer Reviewer - Pediatric & Gynecologic Surgery
- Cactus Communications
- Lisbon
- June 18
Freelance peer reviewers with a doctorate in Pediatric & Gynecologic Surgery are needed to assess manuscripts for originality, study design, literature review, results, and provide constructive feedback.
Freelance Peer Reviewer - Electric Power and Electricity generation
- Cactus Communications
- Lisbon
- August 10
Seeking researchers with a PhD or equivalent for freelance peer review in Electric Power and Electricity generation. Candidates must have two recent publications, strong analytical skills, and expertise in research methodology.
Freelance Peer Reviewer - Autism Spectrum and Neurodevelopmental Disorders
- Cactus Communications
- Lisbon
- August 10
Seeking researchers with a PhD or equivalent to perform peer reviews for journals focusing on Autism Spectrum and Neurodevelopmental Disorders. Candidates must have recent publications and strong analytical skills.
Freelance Peer Reviewer, Civil Engineering, Mechanical Engineering, Computer Science
- Cactus Communications
- Lisbon
- June 27
Freelance peer reviewers needed for civil, mechanical, and computer science journals. PhD or equivalent required, with at least two publications in the last two years. Strong analytical and writing skills, experience with manuscript review systems preferred.
Freelance Recruiter (International Markets)
- Cross Border Talents
- Lisbon
- August 7
Join Cross Border Talents as a Freelance Recruiter and work with a global network of professionals across
Java Software Engineer
- Ubique Systems
- Lisbon
- June 16
Software engineer with 7+ years of Java experience (Spring Boot, Spring Batch, Hibernate, REST API) sought for B2B/freelance contract. Collaborate in agile environment to deliver user-focused solutions. Automate development, testing, and deployment processes.
Freelance Data Scraping Engineer (Python)
- Mindrift
- Lisbon
- July 17
Strategy Consultant - AI Training & Evaluation (Freelance, Remote)
- Mindrift
- Lisbon
- July 15
Strategy 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.
Senior Python Data Scraping Engineer (Freelance)
- Mindrift
- Lisbon
- July 29
Forward Deployed Engineer: Data Migrations & AI
- Antler
- Lisbon
- July 10
, or query optimization Have done any kind of customer-facing technical work — support, consulting, freelance
Forward Deploy Engineer (FDE)
- Antler
- Lisbon
- June 1
, or query optimization Have done any kind of customer-facing technical work — support, consulting, freelance
Senior Python Engineer - AI Coding Agent Evaluation (Freelance)
- Mindrift
- Lisbon
- July 24
Mindrift seeks a Senior Python Engineer to build realistic developer environments and design tasks for evaluating AI coding agents. Responsibilities include crafting prompts, defining task solutions, and writing tests to verify agent performance. Qualifications require 8+ years of software development experience with Python, JavaScript/TypeScript, Docker, Postgres, Kafka, and Redis, along with experience writing tests.





















