Freelance Optical Engineer - AI Training Specialist

We invite you to submit your CV in English, clearly indicating your level of English proficiency.At Mindrift, we bridge the gap between specialists and project-based AI opportunities for leading technology firms, with a focus on testing, evaluating, and enhancing AI systems. Please note that participation is project-based and does not constitute permanent em…

Are you a passionate science expert fluent in Swedish, ready to influence the future of artificial intelligence? As large-scale language models transition from simple chatbots to sophisticated engines of scientific discovery, your contribution becomes crucial. By providing high-quality training data, you can help democratize access to world-class education, stay in sync with groundbreaking research, and enhance problem-solving capabilities for scientists and learners globally. This transformative work starts with you—your expertise is vital for shaping the next generation of AI.We are in search of dedicated science specialists with a deep understanding of physical science, earth science, environmental science, chemistry, physics, astronomy, and scientific literacy. You will engage advanced language models on subjects such as energy transformation, atomic structure, planetary motion, ecological systems, the water cycle, and scientific inquiry. Your role will include documenting failures in reasoning to fortify model accuracy.Your typical day will involve discussions with the AI on real-world scenarios and theoretical scientific inquiries, ensuring factual accuracy and logical consistency, capturing reproducible error traces, and proposing enhancements to our prompt engineering and evaluation metrics.A bachelor's, master's, or PhD in a relevant science discipline is preferred; experience in teaching, published research, laboratory or field studies, or science communication initiatives will be advantageous. Fluency in Swedish and the ability to communicate clearly and reflectively—essentially 'showing your work'—are crucial.Are you ready to leverage your scientific knowledge to build the knowledge base for tomorrow’s AI? Apply today and become a part of the team that will educate the world.

We invite you to submit your CV in English and specify your English proficiency level.Mindrift connects talented professionals with project-based AI opportunities at leading technology firms, specializing in the testing, evaluation, and enhancement of AI systems. Please note that participation is project-based and does not constitute permanent employment.Key ResponsibilitiesWhile each project presents distinct challenges, contributions may include:Designing innovative computational data science tasks that emulate real-world analytical workflows across various sectors including telecom, finance, government, e-commerce, and healthcare.Developing tasks that require Python programming solutions (utilizing libraries such as Pandas, Numpy, Scipy, Sklearn, Statsmodels, Matplotlib, and Seaborn).Ensuring tasks are computationally demanding and cannot be addressed manually within reasonable timeframes (days or weeks).Creating problems that necessitate complex reasoning chains in data processing, statistical analysis, feature engineering, predictive modeling, and extracting insights.Designing deterministic problems with reproducible outcomes: avoiding stochastic elements or requiring fixed random seeds for precise reproducibility.Grounding tasks in real business scenarios: including customer analytics, risk assessment, fraud detection, forecasting, optimization, and enhancing operational efficiency.Crafting end-to-end problems that encompass the entire data science pipeline (data ingestion → cleaning → exploratory data analysis → modeling → validation → deployment considerations).Incorporating big data scenarios that demand scalable computational strategies.Validating solutions using Python alongside standard data science libraries and statistical methodologies.Documenting problem statements clearly with relevant business contexts and providing verified correct answers.QualificationsThis role is ideal for Data Science specialists with experience in Python who are open to part-time, non-permanent projects. Preferred candidates will possess:Over 5 years of practical data science experience demonstrating a measurable business impact.A portfolio showcasing completed projects and publications that highlight real-world problem-solving capabilities.Expertise in Python programming for data science (including libraries such as pandas, numpy, scipy, scikit-learn, and statsmodels).Advanced knowledge in statistical analysis and machine learning, with a deep understanding of algorithms, methods, and their applications.Proficiency in SQL and database operations for data analysis and manipulation.Familiarity with GenAI technologies (LLMs, RAG, prompt engineering, vector databases).Understanding of MLOps practices and workflows for model deployment.Knowledge of contemporary frameworks (TensorFlow, PyTorch, LangChain).Strong written English skills (C1+ level).Application ProcessApply → Pass qualifications → Join a project → Complete tasks → Receive payment

Are you a passionate Estonian language expert ready to influence the evolution of artificial intelligence? As large-scale language models transition from simple chatbots to sophisticated linguistic tools, your role becomes crucial. By providing high-quality training data, you can help create AI that enhances education, supports cutting-edge research, and facilitates communication for Estonian speakers worldwide.We are seeking dynamic Estonian language specialists who possess a deep understanding of Estonian grammar, syntax, morphology, spelling, phonology, and pragmatics. Your responsibilities will include challenging advanced language models on various topics such as verb conjugation, case inflection, vowel harmony, sentence structure, and the subtleties of the Estonian writing system. Documenting any shortcomings will be essential to refining model reasoning.In your role, you will engage in discussions with the model on diverse language scenarios, verify factual accuracy, identify logical inconsistencies, trace reproducible errors, and propose enhancements to our prompt engineering and evaluation metrics.Ideal candidates will hold a master’s degree or PhD in Estonian language, linguistics, or a closely related discipline. Experience with peer-reviewed publications, teaching, or hands-on linguistic analysis projects will be beneficial. Excellent communication skills, particularly in articulating your thought process, are vital.Are you ready to leverage your Estonian language expertise to build the AI knowledge base for the future? Apply now and start shaping the AI that will educate the world.

Are you a passionate Finnish language expert ready to influence the future of artificial intelligence? As large-scale language models advance from simple chatbots to sophisticated tools for linguistic exploration, your contribution is crucial. By providing high-quality training data, you can help democratize access to top-tier education, align with pioneering research, and enhance communication for Finnish speakers globally. Your expertise will be the foundation for the next generation of AI. We are seeking Finnish language specialists who possess a deep understanding of Finnish grammar, syntax, morphology, spelling, phonology, and pragmatics. You will rigorously assess advanced language models on various topics, including verb conjugation, case inflection, vowel harmony, sentence structure, formal versus informal language, regional dialects, and the subtle intricacies of the Finnish writing system, meticulously documenting all error instances to strengthen model reasoning. In your daily routine, you will engage with the model in discussions around language scenarios, verify factual accuracy and logical consistency, document reproducible error patterns, and propose enhancements to our prompt engineering and evaluation methodologies. An ideal candidate will hold a master's degree or PhD in Finnish language, linguistics, or a closely related field. Experience such as peer-reviewed publications, teaching, or hands-on linguistic projects will be advantageous. Clear communication skills, particularly in conveying your methodologies, are essential. If you are ready to transform your Finnish language expertise into the knowledge foundation for tomorrow's AI, we encourage you to apply today and help mold the model that will educate the world.

Mindrift is looking for a Freelance Low-Code Automation Engineer to support the Tendem project. This part-time contract is remote within Sweden. The main focus is building and refining automation workflows that connect AI tools with human input, using platforms such as Make.com and n8n. Key Responsibilities Design and optimize automation workflows that combine AI features with human collaboration. Partner with Tendem Agents to identify repetitive tasks and automate them efficiently. Apply analytical skills to ensure workflows operate smoothly across different systems. Test, refine, and scale automation solutions using quality assurance methods. Use JavaScript to customize workflows as project needs arise. Requirements Hands-on experience with low-code automation platforms, especially Make.com and n8n. Background in workflow design and process automation. Proficiency in JavaScript for customizing workflows. Strong analytical skills, attention to detail, and a commitment to quality. Ability to work remotely and collaborate with distributed teams. Role Details Part-time freelance contract Remote role based in Sweden For more details about the Tendem project, visit tendem.ai.

Kindly submit your CV in English, specifying your English proficiency level.Mindrift connects professionals with project-based AI opportunities for prominent tech firms, concentrating on the assessment, evaluation, and enhancement of AI systems. Note that participation is project-based and does not constitute permanent employment.Role OverviewEach project may involve distinct tasks, including: Creating prompts that challenge AI capabilities;Assessing AI-generated outputs for accuracy, underlying assumptions, and logical consistency;Enhancing AI reasoning to conform to fundamental principles and recognized standards;Utilizing structured scoring methodologies to evaluate multi-step problem-solving.Ideal Candidate ProfileThis role is well-suited for legal consultants or attorneys experienced in US law who are interested in part-time, non-permanent projects. The ideal candidate should possess: A law degree (Bachelor, J.D., LLM, FLLM) relevant to the US legal context;A minimum of 2 years of legal practice experience within US jurisdiction;Proficient written English skills (C1/C2 level);A reliable internet connection.Workflow ProcessApplication → Qualification Assessment → Project Engagement → Task Completion → CompensationProject Commitment ExpectationsFor this project, task completion is anticipated to require approximately 10–20 hours per week during active phases, depending on project necessities. This figure is an estimate and does not guarantee a specific workload.CompensationContributors can earn up to $53 per hour, contingent on their expertise and contribution pace. Compensation varies by project based on scope, complexity, and required skill sets. Please note that other projects on the platform may offer differing pay rates depending on specific requirements.

Please submit your CV in English and indicate your English proficiency level. toloka-ai, working with Mindrift, offers freelance, project-based work focused on AI systems for major technology companies. This is a remote, non-permanent role based in Sweden. Projects center on testing, evaluating, and improving AI tools. Role overview As a Freelance Legal Advisor (US Bar Admitted) - AI Project Consultant, the work involves shaping and assessing AI capabilities through a legal lens. Tasks include writing prompts to challenge AI, reviewing AI-generated responses for accuracy and structure, and ensuring AI reasoning aligns with established legal standards. Structured scoring systems help evaluate how AI approaches complex legal problems. Requirements Law degree relevant to the US legal system (Bachelor, J.D., LLM, or FLLM) Minimum 2 years of legal practice within US jurisdiction Strong written English skills (C1/C2 level) Reliable internet connection How engagement works Apply Pass qualifications Join a project Complete assigned tasks Receive payment Time commitment Active project phases typically require around 10–20 hours per week, though actual workload may shift depending on project needs. Compensation Contributors can earn up to $53 per hour, depending on experience and pace. Compensation varies by project based on complexity and required expertise. Location: Remote, Sweden

Mindrift is actively seeking talented Low-Code Automation Engineers proficient in Make.com, n8n, and JavaScript. Join us on the Tendem project to create powerful automation workflows in a hybrid AI and human environment.In this dynamic role, referred to as an AI Pilot at Mindrift, you will work closely with Tendem Agents to streamline repetitive tasks. Your expertise in automation, structured thinking, and quality assurance will be pivotal in ensuring effective and scalable workflow execution across various systems.This part-time remote position is perfect for professionals experienced in low-code automation platforms and workflow design.

We invite you to submit your CV in English, highlighting your proficiency level in the language.At Mindrift, we specialize in connecting experts with project-based opportunities in artificial intelligence for top technology firms. Our focus is on the testing, evaluation, and enhancement of AI systems. Please note that this role is project-based and does not constitute permanent employment.Role OverviewAs a contributor, you will engage in diverse tasks tailored to each project, including:Crafting prompts that test and challenge AI capabilities;Assessing AI-generated outputs for accuracy, underlying assumptions, and logical coherence;Enhancing AI reasoning to ensure compliance with foundational principles and established standards;Utilizing structured evaluation criteria for multi-step problem-solving assessments.Ideal Candidate ProfileThis position is suited for legal consultants and attorneys experienced in US law who are interested in part-time, non-permanent projects. The ideal candidates will possess:A law degree (Bachelor, J.D., LLM, FLLM) from a US institution;A minimum of 2 years of practical legal experience within the jurisdiction of the United States;Proficient written English skills (C1/C2 level);A reliable internet connection.Project Engagement ProcessSteps to get involved: Apply → Pass qualifications → Join a project → Complete assigned tasks → Receive compensation.Time CommitmentDuring active phases, the estimated workload is approximately 10–20 hours per week, which may vary based on specific project needs. Please note that this is an estimate and not a guaranteed workload.CompensationContributors can earn up to $53 per hour, contingent upon their skill level and output pace. Compensation rates will differ across various projects based on their complexity and required expertise. Be aware that other opportunities may present different pay scales based on their specific requirements.

Join anyone-ai as a Software Engineering AI Trainer and be a pivotal part of shaping the future of AI education. In this exciting role, you will work closely with aspiring engineers to enhance their understanding of artificial intelligence and software development. Your expertise will empower the next generation of tech innovators.

Toloka AI is at the forefront of AI innovation, specializing in creating domain-specific reinforcement learning environments and evaluation frameworks tailored by experienced professionals. Our subsidiary, Mindrift, leverages Toloka’s extensive expertise in scalable data generation and applied machine learning to connect top-tier domain experts with pioneering AI projects.We are excited to announce the launch of our Management Consulting domain, which will transform authentic consulting engagements into structured learning experiences for advanced AI systems. To achieve this, we are forming a talented team of strategy consultants from elite firms who can translate their real-world project experiences into comprehensive examples — encompassing problem structuring, project planning, data analysis, synthesis, and client-ready recommendations.As part of our dynamic team, you will influence how AI systems acquire high-level business reasoning capabilities.Important: This opportunity is exclusively for consultants with substantial experience at top-tier strategy consulting firms. Applicants without direct project involvement at the listed firms should refrain from applying, as we seek practitioners trained to the highest standards of structured problem-solving and client engagement.Eligible firms: McKinsey & Company, Boston Consulting Group (BCG), Bain & Company, Oliver Wyman, Roland Berger, Monitor Deloitte (Deloitte S&C), EY-Parthenon, Kearney, and Strategy& (PwC).

We encourage you to submit your CV in English and specify your English proficiency level.At Mindrift, we connect talented specialists with project-based artificial intelligence opportunities for top-tier technology companies, concentrating on the testing, evaluation, and enhancement of AI systems. Please note that participation is project-based and does not constitute permanent employment.Opportunity OverviewEach project presents its own unique challenges, and contributors may be tasked with:Creating rigorous Computer Science problems that reflect industry practices;Assessing AI solutions for accuracy, underlying assumptions, and constraints;Validating calculations or simulations using Python (including libraries such as NumPy, Pandas, and SciPy);Enhancing AI reasoning to conform to industry-standard logic;Implementing structured scoring criteria for complex, multi-step problems;Collaborating with a global network of PhD professionals to uphold the highest standards of scientific integrity.Desired QualificationsThis role is ideal for Computer Science experts with Python experience who are open to part-time, non-permanent projects. Preferred qualifications include:A degree in Computer Science or a related field.Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, and other domain-specific libraries is also acceptable.At least 2 years of relevant professional experience, including applied research or teaching.Strong written English skills (C1 level or higher).Professional certifications (e.g., CMME, SAS Certifications, CAP) and experience with international or applied projects are advantageous.Application ProcessApply → Complete qualifications → Join a project → Execute tasks → Receive compensationProject CommitmentFor this role, tasks are expected to require approximately 10–20 hours per week during active phases, depending on project specifics. This is an estimate and not a guaranteed workload.Compensation DetailsContributors can earn up to $50 per hour, based on their level of expertise and contribution pace. Compensation varies across projects based on scope, complexity, and the level of required expertise. Please be aware that other projects on the platform may offer different compensation rates based on their specific needs.

Role overview Toloka AI is hiring a Senior Consultant for a freelance AI project. This remote role is open to candidates based in Sweden. The position calls for experience from MBB (McKinsey, BCG, Bain) or other leading consulting firms. What you will do Guide AI-focused projects from initial strategy to hands-on execution, drawing on prior consulting experience. Collaborate with a skilled team to design and implement AI solutions tailored to project needs. Develop and refine strategies that increase the impact and efficiency of AI deployments. Requirements Previous experience at MBB or a comparable top-tier consulting firm. Proven track record managing projects centered on artificial intelligence. Ability to work independently and communicate effectively in a remote setting.

Role Overview anyone-ai is seeking a Full-Stack Developer - AI Trainer based in Sweden. This role blends hands-on software development with work on AI projects. The position involves both building software and helping to train and improve AI models. What You Will Do Work on projects that combine software engineering and artificial intelligence. Contribute to training and refining AI models. Collaborate with teams from different disciplines to deliver solutions. Location This position is based in Sweden.

Join Toloka AI as a Freelance Agent Evaluation Engineer, where you will play a crucial role in enhancing our AI models through your expertise. This position is fully remote, allowing you to work from anywhere in Sweden. You will evaluate and provide feedback on agent performance, ensuring our systems deliver optimal results.

We kindly ask that you submit your CV in English and specify your level of English proficiency.Mindrift connects talented specialists with project-based AI opportunities for top-tier tech companies, focusing on evaluating, testing, and enhancing AI systems. Please note that participation is on a project basis, rather than permanent employment.About the RoleThis project is ideal for a Senior Python Developer with extensive experience in functional testing, strong skills in Linux and Docker, and the capability to interpret code in various languages with the assistance of LLMs (such as C, Rust, Go). You will be responsible for translating migration task requirements and confidently utilizing tools like Roo Code or Claude Code to enhance iterative development.Key ResponsibilitiesDevelop functional black box tests for large codebases across multiple source languages.Establish and manage Docker environments to guarantee fully reproducible builds and test executions across different platforms.Track code coverage and set up automated scoring criteria to meet industry benchmark standards.Utilize LLMs (Roo Code, Claude) to expedite development cycles, automate repetitive tasks, and enhance code quality overall.Requirements5+ years of experience as a Software Engineer, predominantly in Python.In-depth expertise with pytest (including fixtures, session-scoped, timeouts) and designing black-box functional tests for CLI tools.Proficient in Docker (creating reproducible Dockerfiles, user contexts, and secure workspaces).Strong skills in Linux and Bash scripting, along with confidence in debugging within containers.Familiarity with modern Python tools (uv, pyproject.toml, packaging).Ability to read and comprehend multiple programming languages with the support of LLMs (C, C++, Rust, Go, etc.).Experience utilizing LLMs (Claude Code, Roo Code, Cursor) to streamline development and generate test cases.English proficiency at B2 level or higher.Preferred QualificationsPrevious experience with agent evaluation platforms and MCP CLI.Tools and Technologies: Python (pytest, uv, Pillow), Docker, Bash, Git Submodules, C/C++/Rust/Go (reading), Dagger, GitHub Codespaces, LLMs (Claude Code, Roo Code, Cursor), coverage.py, gcov, kcov.BenefitsFreelance project-based collaboration through the Mindrift platform (powered by Toloka AI).Fully remote and flexible participation — you can choose your contribution hours (20-30 hours per week).Compensation for each project is determined by the scope and expertise required. For this project, AI trainers can earn up to $50 per hour.

Toloka AI is looking for a Freelance Machine Learning Engineer to join on a contract basis. This remote role is open to candidates based in Sweden and centers on contributing to projects in machine learning and data analytics. Key responsibilities Work closely with teams to advance machine learning initiatives Use data analytics to address practical problems Support the development and improvement of AI solutions Work arrangement This freelance position is fully remote, but applicants must reside in Sweden.

Lovable serves over 2 million users worldwide, helping people build software using clear, direct language. The team seeks an AI Research Engineer specializing in post-training processes to strengthen one of the market’s fastest-growing AI products. Role overview This position focuses on the post-training pipeline for Lovable’s AI models. The work blends hands-on model training, production infrastructure, and rapid deployment of optimized models. The team values speed and expects research to become working features in days or weeks, not months. Balancing research with real-world deployment is key. What you will do Oversee the complete post-training pipeline for AI models Apply recent research to practical training methods and workflows Deploy optimized models quickly to improve user engagement Work directly with both model training and production infrastructure Deliver results that impact users and product quality Team and culture The Stockholm-based team is small, skilled, and values ownership, speed, and collaboration. Lovable’s platform supports everyone from solo founders to global enterprises, enabling rapid transformation of ideas into products. Users span more than 200 countries. Location This role is based in Stockholm.

Please submit your CV in English and indicate your level of English proficiency.Mindrift connects specialists with project-based AI opportunities for leading tech companies, with a strong emphasis on testing, evaluating, and enhancing AI systems. Note: This is a project-based collaboration, not a permanent employment position.About the RoleWe are seeking a highly experienced Senior Python Developer with extensive functional testing expertise. The ideal candidate will possess strong skills in Linux and Docker, along with the ability to read and understand code in multiple programming languages (e.g., C, Rust, Go) with assistance from LLMs. You will be responsible for translating migration task requirements and leveraging tools like Roo Code or Claude Code to expedite development cycles.Key ResponsibilitiesDevelop and execute functional black box tests for substantial codebases in various programming languages.Create and manage Docker environments to guarantee 100% reproducibility of builds and test executions across diverse platforms.Monitor code coverage and establish automated scoring criteria to comply with industry standards.Utilize LLMs (Roo Code, Claude) to enhance development efficiencies, automate repetitive tasks, and elevate code quality.Requirements5+ years of experience in Software Engineering, primarily focusing on Python.In-depth experience with pytest (fixtures, session-scoped, timeouts) and crafting black box functional tests for CLI tools.Expertise in Docker (creating reproducible Dockerfiles, user contexts, secure workspaces).Strong proficiency in Linux and Bash scripting and debugging within containers.Familiarity with modern Python tooling (uv, pyproject.toml, packaging).Ability to read and comprehend multiple programming languages with the aid of LLMs (e.g., C, C++, Rust, Go).Experience utilizing LLMs (Claude Code, Roo Code, Cursor) to enhance iterative development and generate test cases.English language proficiency at B2 level or higher.Preferred QualificationsExperience with agent evaluation platforms and MCP CLI.Tools and Technologies: Python (pytest, uv, Pillow), Docker, Bash, Git Submodules, C/C++/Rust/Go (reading), Dagger, GitHub Codespaces, LLMs (Claude Code, Roo Code, Cursor), coverage.py, gcov, kcov.BenefitsWhat We Offer:Freelance project-based collaboration through the Mindrift platform (powered by Toloka AI).Fully remote and flexible participation — choose your working hours (20-30 hours per week).Compensation varies by project scope and required expertise, with AI trainers earning up to $50 per hour.