We connect exceptional fractional and freelance professionals with ambitious companies and AI labs.Every missions application can give you access to the 10x platform and they are all outcome-driven. We value execution, ownership, and real-world impact.Explore missions below.Outcome-drivenEvery mission is scoped around real results, not hours logged. You know what success looks like from day one.Access the 10x platformApplying to a mission can unlock access to the 10x platform, our verified network, and future opportunities.Ambitious companies and AI labsWork with teams that value execution, ownership, and real-world impact - from scaling startups to leading AI labs.Researcher/Scientist - AI Trainer - Freelance - 8-20 hrs/week - RemoteLocationSpainEmployment TypeContractLocation TypeRemoteDepartmentScientists & ResearchersCompensationUpdated: 07 July 2026Freelance | 8–20 hrs/week | Remote (EU/UK)Leverage your academic PhD or undergraduate expertise to shape the next generation of AI, all while enjoying adaptable, remote, project-based work. Are you a science, health, or aviation expert excited to help guide the development of cutting-edge AI? 10x Team is looking for Freelance Science/Bio/Health/Aviation Researchers & Scientists – AI Trainers.About Us10x Team connects leading freelance experts with innovative AI labs to accelerate progress in artificial intelligence. We are seeking EU or UK-based science, life science, and aviation researchers and academics to help train and refine AI systems focused on technical and scientific accuracy in a range of domains (biology, medicine,



public health, physics, aerodynamics, aviation, and more).Key ResponsibilitiesReview and critique AI-generated scientific content, explanations, and data summariesEvaluate the accuracy and clarity of AI suggestions related to scientific problems, research analysis, health assessments, or technical documentationCreate, extend, and refine real-world scenarios, problem sets, and case studies within your area of expertiseIdentify logical errors ("AI slop"), risks, and gaps in AI-generated outputs, providing actionable structured feedback to increase accuracy and rigorGuide AI in better understanding and applying key domain concepts, lab procedures, and technical languageAbout YouCurrent or former university student in a science, health, or aviation-related field (PhD, MSc, or upper-level undergraduate)Based in the EU or UKAnalytical, detail-focused, and able to recognize inaccuracies or flawed reasoning in contentExcellent written communication and comfortable providing clear, constructive feedbackAvailable for 8–20 hours per week and able to work asynchronously/remotelyWhy Join 10x Team?Flexible, project-based freelance roles – 100% remoteDirectly impact how AI learns, reasons,



and supports scientific or health workflowsProfessional growth opportunities via our 10x Team AI AcademyJoin a dynamic expert network with rapid onboardingPlease note: these AI Lab missions are not traditional job openings with fixed start dates. Project demand is highly dynamic and matching depends on your expertise, availability, and current AI Lab needs. Some experts are matched within days, while others may wait longer for a suitable project.NOTEAt10x, there are two types of opportunities:1. Traditional freelance missionsThese are regular project-based opportunities where the listed mission is the actual project you may work on.2. AI Lab rolesFor AI Lab roles, we scout, review, and approve profiles for access to future project opportunities.The missions listed for AI Lab roles arenot traditional job openings. AI Lab work is often highly confidential as this exposes information of what an AI Lab is working on, and project requests are unpredictable. When an AI Lab request comes in, we often need to respond within24 hourswith suitable talent.Matching depends on the specific needs of each AI Lab project and your niche expertise. Once your profile is reviewed and approved, you may be matched to relevant AI Lab projects when suitable opportunities arise—sometimes within hours, but it may also take months depending on project needs.This can happen within hours, but it may also take months, depending on the researchers at the AI labs and their project needs.#J-18808-Ljbffr

📌 Researcher/Scientist - Ai Trainer - Freelance - 8-20 Hrs/Week - Remote (Madrid)
🏢 10x Team
📍 Madrid