Mechanical Engineer & Python Specialist - Freelance AI Trainer

Please submit your CV in English and describe your English language proficiency. toloka-ai, working with Mindrift, connects experienced professionals to project-based AI work for leading technology companies. This freelance contract centers on evaluating and refining AI systems. The position is not permanent and assignments are project-based. Project Scope Each assignment brings a new data science challenge. Typical responsibilities include: Designing original data science problems that reflect real analytical workflows in sectors such as telecom, finance, government, e-commerce, and healthcare. Building problems that require Python solutions, using libraries like Pandas, Numpy, Scipy, Scikit-learn, Statsmodels, Matplotlib, and Seaborn. Ensuring tasks are computationally intensive and cannot be solved by hand in a short time. Developing complex scenarios involving data processing, statistical analysis, feature engineering, predictive modeling, and drawing insights. Creating deterministic problems with reproducible outcomes, either by avoiding randomness or setting fixed seeds. Basing problems on real business needs, such as customer analytics, risk assessment, fraud detection, forecasting, optimization, and operational efficiency. Covering the entire data science workflow: data ingestion, cleaning, exploratory analysis, modeling, validation, and deployment considerations. Including big data processing that requires scalable approaches. Validating solutions with Python and standard data science tools and statistical methods. Documenting each problem clearly, providing realistic business context and verified solutions. Requirements At least 5 years of hands-on data science experience with measurable business results. A portfolio of completed projects or publications showing real-world problem solving. Expertise in Python for data science (including pandas, numpy, scipy, scikit-learn, statsmodels). Deep understanding of statistical analysis and machine learning, including practical algorithms and applications. Advanced SQL skills and experience with database operations for analysis and data manipulation. Background in Generative AI technologies (such as LLMs, RAG, prompt engineering, vector databases). Understanding of MLOps and model deployment practices. Familiarity with frameworks like TensorFlow, PyTorch, or LangChain. Strong written English skills at C1 level or above. Application Process Apply Complete qualifications Join a project Perform tasks Receive payment This freelance data scientist role is remote, based in Lyon, Auvergne-Rhône-Alpes, France.

Please submit your CV in English and include your English proficiency level. Role overview This freelance position with toloka-ai (via Mindrift) connects material scientists to project-based AI work for leading technology companies. The main focus is evaluating and improving AI systems. Assignments are temporary and do not constitute permanent employment. What you will do Design materials engineering problems that mirror real-world workflows Create challenges requiring Python programming for engineering calculations and simulations Develop computationally intensive problems using numerical methods or iterative approaches Build tasks involving system design, optimization, and analysis Base challenges on research questions or practical engineering scenarios Validate solutions using Python and standard engineering libraries Document problem statements clearly and provide verified answers Requirements Degree in Material Science or a closely related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is a plus At least 2 years of professional experience (applied, research, or teaching) Solid understanding of practical engineering constraints and approximations Excellent written English (C1 level or higher) How projects work Apply Pass qualifications Join a project Complete assigned tasks Receive payment Time commitment Active project phases usually require 10–20 hours per week. Actual hours depend on current project needs and are not guaranteed outside of active assignments. Compensation Earn up to $45 per hour, depending on experience and the rate of task completion. Pay may vary by project scope, complexity, and required expertise. Other projects may offer different rates based on their specific requirements.

Toloka AI seeks a freelance AI Trainer with a background in civil engineering and strong Python skills. This remote contract is based in Lyon, Auvergne-Rhône-Alpes, France. Role overview This position blends technical knowledge in civil engineering and Python programming with a focus on education. Trainers guide learners in understanding how AI can address real-world engineering challenges and help expand AI skills within the field. What you will do Develop training materials centered on AI applications in civil engineering Lead sessions for those interested in AI and engineering topics Answer questions and clarify concepts for participants Work with the team to refine and broaden AI training programs

Toloka AI is looking for a freelance specialist with a strong background in biology and hands-on experience with Python programming. This position centers on supporting the development and improvement of AI models that address challenges in biological research and applications. As an AI Trainer, you will apply your subject matter knowledge to help shape advanced tools for the life sciences. The work is fully remote, connecting you with a team committed to innovation in artificial intelligence. Role overview Contribute biological expertise to projects involving AI and Python. Help refine and improve AI models for use in biological contexts. Collaborate remotely with colleagues focused on AI advancements. Requirements Strong knowledge of biology. Experience programming in Python. Interest in artificial intelligence and its applications in biology. Ability to work independently in a remote setting.

Mindrift partners with specialists to deliver AI solutions for leading technology companies. For the Tendem project (https://tendem.ai/), the team is seeking Freelance AI Workflow Engineers, also known as AI Pilots, to help create and refine scalable, reliable workflows powered by artificial intelligence. This part-time freelance position is fully remote and centers on supporting the Tendem project. While candidates based in Lyon or the wider Auvergne-Rhône-Alpes region are encouraged to apply, location is flexible as all work takes place remotely. What you will do Design, build, and optimize workflows using large language model APIs such as OpenAI, Claude, Gemini, or similar platforms. Develop and enhance AI-driven automation for content creation, enrichment, and communication tasks. Create and improve prompt frameworks to ensure consistent, high-quality results across workflows. Set up systems for automated, personalized outreach, including email campaigns, messaging flows, and lead enrichment processes. Organize and preprocess data to support stable model performance and reliable outputs. Review and upgrade AI pipelines with a focus on scalability, efficiency, and accuracy. Requirements Hands-on experience with integrating large language models, prompt engineering, and building AI-powered automation systems. Structured approach to problem-solving and a strong focus on quality control.

Mindrift connects mathematics and programming specialists with project-based AI consulting work for technology companies. This freelance role centers on designing and validating advanced computational mathematics problems, with a strong emphasis on Python programming and mathematical rigor. All work is remote and project-based, not a permanent position. Role overview As a Mathematics & Python Specialist, projects will involve: Designing original computational mathematics problems that reflect real mathematical research workflows Developing problems that require Python programming to solve, using libraries such as Numpy, SciPy, or Sympy Creating computationally intensive tasks that cannot be solved manually in a short period Formulating problems involving complex reasoning in areas like number theory, combinatorics, graph theory, and numerical analysis Basing tasks on real-world research challenges or practical mathematical applications Validating solutions using Python and recognized mathematical libraries Documenting problem statements clearly and providing verified answers Requirements Degree in Mathematics (Pure or Applied) or a related field Proficiency in Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is also acceptable At least 2 years of relevant experience (applied, research, or teaching) Experience with numerical methods and symbolic computation Ability to design problems that reflect authentic mathematical research processes Knowledge of computational complexity theory Strong English writing skills at C1 level or above Project commitment During active project phases, expect to commit around 10–20 hours per week. Actual workload will depend on project needs and may vary. Compensation Contributors may earn up to $45 per hour, depending on expertise and pace. Compensation varies by project scope, complexity, and required skills. Application process To apply, submit your CV in English and specify your English proficiency level. The process includes application review, qualification steps, joining a project, completing assigned tasks, and receiving compensation.

Please submit your CV in English and specify your English proficiency level. Mindrift offers project-based remote opportunities for professionals in Lyon, Auvergne-Rhône-Alpes, France, and beyond. These freelance roles focus on testing, evaluating, and improving AI systems for leading tech companies. Participation is on a per-project basis and does not constitute permanent employment. Role overview Freelance AI Trainers specializing in Chemistry and Python contribute to a range of unique projects. Tasks vary by project and may include: Developing original computational chemistry problems that reflect real-world research workflows. Designing problems that require Python programming to solve, using libraries such as NumPy, SciPy, and chemistry-specific packages. Ensuring problems are computationally intensive and not solvable by hand within a reasonable timeframe. Creating tasks that involve complex reasoning in areas like physical chemistry, quantum chemistry, and molecular modeling. Basing problem statements on real research questions or practical chemistry scenarios. Validating solutions with Python, following standard computational chemistry techniques. Documenting problem statements clearly and providing verified, correct solutions. Requirements Degree in Chemistry or a related field. Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, NumPy, Pandas, SciPy, or similar programming languages is also accepted. Minimum of 2 years of professional experience in application, research, or teaching. Familiarity with numerical methods in chemistry. Understanding of computational chemistry concepts and methodologies. Excellent written English skills at C1 level or above. How projects work The process is straightforward: apply, pass qualifications, join a project, complete assigned tasks, and receive compensation. Time expectations During active project phases, contributors typically commit 10–20 hours per week. Actual workload depends on project needs and is not guaranteed outside active periods. Compensation Earnings can reach up to $45 per hour, depending on expertise and pace. Compensation varies by project scope, complexity, and required skills.

Mindrift is looking for a Freelance DevOps Engineer (Automation Systems) to help build and maintain automation infrastructure for the Tendem project. This part-time, remote contract is based in Lyon, Auvergne-Rhône-Alpes, France, and centers on supporting scalable workflows where AI and human agents collaborate. Role overview This position focuses on designing, deploying, and supporting infrastructure that powers automation pipelines. The work involves ensuring systems remain stable, scalable, and highly available across different environments. Close collaboration with Tendem Agents is essential to align infrastructure with operational needs and keep automation running smoothly. Key responsibilities Deploy and maintain self-hosted automation platforms, such as n8n or similar tools. Design and manage infrastructure for high-volume workflows and large-scale data processing. Scale automation systems to support concurrent workloads and demanding operations. Set up monitoring, logging, and alerting to track workflow performance and spot failures. Implement alerts for critical issues, including node failures, drops in performance, or instability. Maintain uptime, reliability, and fault tolerance throughout automation pipelines. Who will thrive in this role This freelance, part-time position suits professionals with strong experience in cloud infrastructure, system deployment, and managing high-load automation environments. The remote setup offers flexibility for those living in Lyon or elsewhere in the Auvergne-Rhône-Alpes region. To learn more about the Tendem project, visit https://tendem.ai/.

Toloka AI is looking for a Computer Science Specialist with advanced Python skills to join AI projects on the Mindrift platform. This role is remote and based in Lyon, Auvergne-Rhône-Alpes, France. Key responsibilities Design and maintain complex algorithms that drive artificial intelligence projects Collaborate with a team focused on creative approaches to technical challenges Use Python expertise to move project objectives forward and support technical standards Requirements Solid foundation in computer science and strong Python programming skills Interest in artificial intelligence and developing algorithms Willingness to share ideas and maintain high standards for technical quality

Mindrift partners with technology innovators to bring real-world expertise into Generative AI projects. For this freelance role, work centers on the Tendem project (https://tendem.ai/), which aims to streamline and automate business processes by integrating specialist knowledge from around the world. Role overview This is a part-time, remote contract for an Integration Developer (API Specialist). The main focus is designing, building, and optimizing integrations between core business systems to keep data flowing reliably and in sync. The role welcomes candidates based in Lyon, Auvergne-Rhône-Alpes, France, as well as those working remotely from this region. What you will do Design and assess integrations for key business systems, including CRMs, advertising platforms, and email tools. Develop and refine workflows using APIs, webhooks, and both real-time and batch data pipelines. Connect and synchronize databases across tools such as Airtable, Google Sheets, and Notion. Maintain consistent and real-time data transfer between systems and services. Troubleshoot and optimize data flow, addressing latency and failures as they arise. Support automated communication integrations, including messaging, outreach, and calling workflows. Requirements This contract suits professionals with proven experience in APIs, webhooks, and building data pipelines across multiple platforms. The freelance structure offers flexibility and the chance to contribute to AI-driven projects. Compensation Contributors can earn up to $60 per hour, depending on expertise and pace. Actual pay may vary by project, based on scope, complexity, and required skills.

Mindrift brings together specialists and AI projects from top technology companies, focusing on generative AI and practical expertise from around the globe. Role overview This part-time, remote Freelance n8n Workflow Developer (AI Trainer) role supports the Tendem project (https://tendem.ai/). The position is based in Lyon, Auvergne-Rhône-Alpes, France, but remote work is available. Known internally as AI Pilot, this role partners with Tendem Agents to automate and streamline repetitive tasks. The work blends automation skills with structured process thinking to improve workflows in a mixed AI and human setting. What you will do Design and evaluate advanced workflows in self-hosted n8n environments. Build integrations across multiple systems to enable scalable automation. Develop and enhance AI-powered workflows for content generation and data enrichment. Create and maintain automation for lead generation, outreach, and data processing. Set up web scraping workflows for reliable data extraction and processing. Refine workflow execution, optimize node sequencing, and improve error handling to reduce failures and delays. Who this role suits This position fits professionals with experience in no-code automation, workflow design, and process optimization across various business systems. The part-time, remote setup offers flexibility for those who enjoy building efficient, scalable solutions.

Toloka Annotators is looking for a Freelance AI Trainer - Data Annotation Specialist to help advance AI model development. This position is remote, with a focus on candidates based in Lyon, Auvergne-Rhône-Alpes, France. Work is performed from home, offering flexibility while supporting key AI projects. Main responsibilities Annotate data accurately to support and refine AI systems Apply detailed project guidelines to maintain consistent and high-quality annotations Assist with AI initiatives that are implemented across various platforms What helps in this role Keen attention to detail and the ability to identify inconsistencies Strong focus on accuracy and efficiency when annotating data Ability to work independently and manage tasks remotely

Role overview Mindrift seeks a Freelance Low-Code Automation Engineer to contribute to the Tendem project. This part-time, remote position centers on building automation workflows that link AI tools with human-driven processes. The role is internally known as an AI Pilot. What you will do Design and implement automation workflows using low-code platforms and JavaScript Collaborate with Tendem Agents to pinpoint repetitive tasks that can be automated Ensure workflows remain efficient, scalable, and reliable Requirements Strong background in workflow architecture and low-code automation Experience blending AI capabilities with human expertise to improve operational efficiency Location This is a remote position based in Lyon, Auvergne-Rhône-Alpes, France.

Role overview Toloka AI seeks a Freelance Machine Learning Engineer to support its remote team based in Lyon, Auvergne-Rhône-Alpes, France. This contract position centers on designing AI solutions for practical problems. Projects cover a variety of real-world applications, allowing direct impact through applied machine learning expertise. Key responsibilities Build and deploy machine learning models to address specific use cases Collaborate with colleagues from diverse professional backgrounds Share technical insights and contribute actively in a remote team Use creative problem-solving to tackle complex challenges Collaboration and flexibility This freelance role provides flexibility in both working hours and location. Teamwork takes place online, connecting professionals from multiple disciplines and encouraging a range of perspectives and solutions.

Toloka AI seeks a Freelance English Writer and AI Trainer for a remote role based in Lyon, Auvergne-Rhône-Alpes, France. This position centers on creating clear, engaging English content to help train AI systems. Role overview This freelance role involves producing English text that supports the development of artificial intelligence. The work is fully remote, offering flexibility while contributing to innovative projects. What you will do Write informative and engaging English content for AI training Support projects aimed at improving AI capabilities Requirements Strong interest in writing and language Curiosity about artificial intelligence

Toloka AI seeks a Freelance Junior Journalist - AI Trainer for a remote contract position based in Lyon, Auvergne-Rhône-Alpes, France. This role focuses on supporting the development of artificial intelligence by producing training data and written content. Key responsibilities Create accurate and reliable training data for AI models Write clear, well-structured content to support AI improvement Collaborate with subject matter experts to strengthen AI performance Candidate profile Interest in journalism and new technology Motivated to work on projects that influence AI development Strong collaboration and communication skills

Toloka AI seeks a Freelance Mathematics Expert to support the training of AI models with advanced mathematical concepts. This contract position is remote, with candidates based in Lyon or the Auvergne-Rhône-Alpes region of France. Role overview This role centers on applying deep mathematical knowledge to help artificial intelligence systems better understand complex topics. The work involves both subject expertise and the ability to communicate ideas clearly for use in training data. What you will do Guide AI model development by clarifying advanced mathematical concepts Use teaching skills to break down and explain ideas for training datasets Work with a team dedicated to artificial intelligence projects Requirements Strong background in mathematics Experience or interest in teaching or explaining mathematical concepts Ability to work independently and remotely Residence in Lyon or the Auvergne-Rhône-Alpes region (remote work)

Role overview Mindrift seeks a Freelance No-Code Automation Workflow Specialist to contribute to the Tendem project (https://tendem.ai/). The main focus is building and refining integrations that combine AI capabilities with human input, aiming for smoother business operations. What you will do Work closely with Tendem Agents to automate and streamline routine business tasks Design and implement no-code workflows that connect various tools and systems Monitor workflow execution to ensure quality and efficiency Troubleshoot and improve automation logic using structured thinking Requirements Experience with no-code automation platforms Background in workflow design and optimizing business systems Strong analytical and problem-solving abilities Comfortable working remotely and independently Position details Part-time, freelance contract Remote role based in or near Lyon, Auvergne-Rhône-Alpes, France

toloka-ai, working through Mindrift, brings experienced professionals into project-based AI work for leading technology companies. This Freelance Supply Chain Consultant & AI Trainer position is remote and structured around specific project engagements, not as a permanent role. Role overview This freelance role centers on applying hands-on procurement and supply chain expertise to support AI development. The consultant will use real-world experience to design supply chain disruption scenarios, define expected outcomes and mitigation plans, and evaluate AI-generated recommendations for their accuracy and business value. Key responsibilities Create realistic disruption scenarios in supply chain and procurement, such as supplier delays, quantity fluctuations, logistics problems, and quality failures. Define outcomes and outline practical mitigation strategies for each scenario. Assess AI-generated responses for logic, accuracy, and business relevance. Review outputs for completeness and ensure compatibility with ERP systems, including Microsoft Dynamics 365, Coupa, Jaggaer, and Ariba (SAP). Support structured data creation and validation according to established guidelines. Requirements Minimum 4 years of experience in procurement, supply chain, or purchasing, ideally within manufacturing. Strong grasp of procurement processes, including purchase orders, vendor management, inventory, and production planning. Direct experience with ERP systems such as SAP, Oracle, or Microsoft Dynamics 365. Ability to create and analyze supply chain disruption scenarios and mitigation plans. Knowledge of disruption types: delays, shortages, quality issues, and logistics challenges. Familiarity with Incoterms and logistics or transportation management. Understanding of Bill of Materials (BOM) structures and production planning. Experience with supplier performance metrics, including OTIF, lead times, and quality scores. Strong analytical skills to evaluate AI outputs against business needs. Background in data validation, structured data entry, or annotation work. Proficient written English communication. Project process Apply Meet qualification criteria Join a project Complete assigned tasks Receive compensation Time commitment Project tasks are estimated at 10 to 20 hours per week during active phases. Actual workload may vary depending on project requirements. Compensation Compensation is up to $60 per hour, determined by experience and project scope.

Please submit your CV in English and indicate your English proficiency level. Toloka AI, through Mindrift, connects specialists with project-based AI work for leading technology companies. This Senior Python Developer - Code Migration Expert position is tied to a specific project and is not a permanent role. Role overview This position calls for a Senior Python Developer with strong functional testing experience, advanced Linux and Docker skills, and the ability to interpret code in languages like C, Rust, and Go. Large language models (LLMs) such as Roo Code and Claude Code play a key role in the workflow, helping translate migration requirements and accelerate development cycles. What you will do Develop functional black box tests for sizable codebases in multiple languages. Set up and maintain Docker environments to ensure builds are reproducible and tests run consistently across platforms. Analyze code coverage and define automated scoring criteria that align with industry standards. Use LLMs (including Roo Code and Claude) to automate repetitive tasks, speed up development, and improve code quality. Requirements 5+ years as a Software Engineer focused on Python. Deep knowledge of pytest (fixtures, session-scoped tests, timeouts) and experience building black-box functional tests for CLI tools. Advanced skills with Docker: writing reproducible Dockerfiles, managing user contexts, and maintaining secure environments. Strong Linux and Bash scripting skills, including debugging within containers. Familiarity with modern Python tooling (uv, pyproject.toml, packaging). Ability to read and understand code in C, C++, Rust, or Go, supported by LLMs. Hands-on experience using LLMs (Claude Code, Roo Code, Cursor) for iterative development and test generation. English proficiency at B2 level or higher. Preferred 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. Benefits and work structure Freelance, project-based engagement via Mindrift (powered by Toloka AI). Fully remote with flexible scheduling: set your own hours and contribution (20-30 hours per week). Compensation varies by project scope and expertise. For this role, AI trainers can earn up to $50 per hour.