Freelance Optical Engineer with Python Skills for AI Training

Toloka AI seeks a Strategy Consultant with expertise in AI training and evaluation. This is a remote role based in Belo Horizonte, State of Minas Gerais, Brazil. The focus is on advising organizations as they refine their AI strategies and enhance training programs. Key responsibilities Guide companies in shaping and improving their AI training and evaluation processes Offer insights to support informed decisions for AI-related projects Assist clients in building stronger AI capabilities and refining their methodologies Location This position is remote, with a focus on candidates in Belo Horizonte, State of Minas Gerais, Brazil.

Toloka-AI seeks a Computer Science Specialist with advanced Python expertise to join AI-focused initiatives. This fully remote role is based in Belo Horizonte, State of Minas Gerais, Brazil, and centers on building impactful systems in artificial intelligence. What you will do Work closely with a team to design and develop AI-driven solutions Create and maintain Python-based systems that address practical challenges Contribute to projects that push forward AI capabilities at Toloka-AI Requirements Solid foundation in computer science principles High level of proficiency in Python programming Genuine interest in advancing AI with real-world applications Ability to collaborate effectively in a remote setting

Please submit your CV in English and include your English proficiency level. This contract role supports toloka-ai through Mindrift, focusing on building and evaluating datasets that measure how well AI coding agents perform real-world developer tasks. The position is project-based and not a permanent employment opportunity. Role overview The Freelance AI Agent Evaluation Engineer creates and refines simulated development environments to test advanced AI models. The work centers on designing authentic scenarios that mirror the challenges developers face, ensuring that AI agents are thoroughly evaluated in realistic contexts. What you will do Build virtual companies from scratch, including codebases, infrastructure, and supporting materials like documentation, conversations, and tickets to establish convincing development histories. Curate and refine tasks drawn from different stages of the virtual company, draft prompts, set evaluation criteria, and ensure tasks are solvable and assessed fairly. Design assignments within isolated environments that resemble a developer's workstation, using a Linux machine equipped with development tools, MCP servers (repository, task tracker, messenger, documentation), and a working web application codebase. Write tests that accept all correct solutions while rejecting incorrect ones, carefully balancing strictness to avoid excluding valid approaches or allowing flawed solutions. Collaborate with AI agents to ensure tests catch real issues, support valid solutions, and do not miss poor ones. Review code generated by AI agents, analyze factors behind success or failure, and design edge cases and adversarial scenarios to challenge the models. Iterate on your work based on feedback from expert QA reviewers who assess your output against quality standards. What this role does not involve Data labeling Prompt engineering Writing code from scratch (the AI agent handles most coding; the focus here is on guidance and evaluation) Collaboration with AI models is central to this work. Crafting tasks that truly test advanced models requires both technical expertise and creativity in using these systems as part of the process. Location Remote , Belo Horizonte, State of Minas Gerais, Brazil

Role overview Toloka AI is hiring a Senior Consultant to work on freelance AI projects. This position is designed for someone with experience at MBB or other top-tier consulting firms. The focus is on developing strategies and solutions to enhance Toloka AI's services. The role operates fully remotely, with a base in Belo Horizonte, State of Minas Gerais, Brazil. Key responsibilities Use consulting expertise to guide the direction and execution of AI projects Work closely with an international group of specialists Support the growth and improvement of Toloka AI's service offerings Location This is a remote role based in Belo Horizonte, State of Minas Gerais, Brazil.

Role Overview Toloka AI is looking for a Freelance Mechanical Engineer with strong Python skills to support ongoing AI training projects. This contract role is fully remote, based in Belo Horizonte, State of Minas Gerais, Brazil. What You Will Do Apply mechanical engineering knowledge to AI training workflows Use Python to support data handling, automation, or model development as needed Collaborate with Toloka AI teams on project goals and deliverables Location and Flexibility This is a remote position. Candidates should be based in Belo Horizonte or elsewhere in the State of Minas Gerais, Brazil.

Toloka Annotators is hiring an AI Training Specialist to help build global egocentric video datasets. This role is remote and based in Belo Horizonte, State of Minas Gerais, Brazil. Key responsibilities Annotate and review egocentric video data to support AI model development Collaborate with cross-functional teams to ensure data quality and accuracy Assist in preparing and refining training materials for AI systems Location This is a remote position based in Belo Horizonte, State of Minas Gerais, Brazil.

toloka-ai is hiring a Freelance Supply Chain Consultant - AI Trainer for remote, project-based assignments. This contract role is open to professionals living in Belo Horizonte, State of Minas Gerais, Brazil. Engagements are not permanent employment and are structured around specific projects supporting artificial intelligence development. Role overview This position draws on deep procurement and supply chain expertise to help test, evaluate, and improve AI systems used by technology companies. The work involves designing realistic disruption scenarios, defining expected results, and reviewing AI-generated recommendations for accuracy and business value. What you will do Create supply chain disruption scenarios based on real procurement and manufacturing challenges, such as supplier delays, quantity changes, logistics issues, or quality failures. Define expected outcomes and outline effective mitigation strategies for each scenario. Evaluate AI-generated responses and recommendations, checking for accuracy, completeness, and relevance to business needs. Assess outputs within ERP systems, including Microsoft Dynamics 365, Coupa, Jaggaer, and Ariba (SAP). Support structured data creation and validation tasks, following detailed guidelines. Requirements Minimum of 4 years’ hands-on experience in procurement, supply chain management, or purchasing, ideally within manufacturing. Strong knowledge of procurement workflows such as purchase orders, vendor management, inventory, and production planning. Practical experience with ERP platforms like SAP, Oracle, or Microsoft Dynamics 365. Ability to design and analyze supply chain disruption scenarios and propose mitigation strategies. Understanding of disruption types: delays, shortages, quality issues, and logistics challenges. Familiarity with Incoterms and transportation or logistics management. Knowledge of Bill of Materials (BOM) structures and production planning processes. Experience using supplier performance metrics such as OTIF, lead times, and quality scores. Strong analytical skills for evaluating AI outputs against business logic. Background in data validation, structured data entry, or annotation work. Excellent written English communication skills. How the process works Apply Pass qualifications Join a project Complete tasks Receive compensation Time commitment Projects typically require 10 to 20 hours per week during active phases. Actual workload may vary depending on project needs. Compensation Earn up to $50 per hour, depending on experience and the scope of each project.

Please submit your resume in English and indicate your English proficiency level. Mindrift offers project-based roles for professionals interested in AI, connecting them with technology companies to support and evaluate AI systems. These freelance assignments are not permanent positions. Role overview This freelance Legal Advisor position is open to US Bar-admitted legal professionals. Work is remote and project-based, with assignments varying by client and project scope. Responsibilities may include: Designing prompts to assess and challenge AI capabilities Reviewing AI-generated legal content for accuracy, consistency, and underlying assumptions Refining AI reasoning to ensure alignment with legal standards and principles Applying structured criteria to evaluate multi-step legal problem-solving Requirements Law degree (J.D., LLM, or equivalent) recognized in the United States Active US Bar admission At least 2 years of legal experience within the US legal system Strong written English skills at C1 or C2 level Reliable internet connection Who this role suits This role fits legal professionals and consultants with US law expertise who want flexible, part-time work. Assignments are well suited to those comfortable with remote, independent project work. Application steps Application Qualification assessment Project assignment Task completion Compensation Time commitment Active projects typically require 10–20 hours per week. Actual hours may vary depending on assignment needs; this is a guideline, not a fixed requirement. Compensation Earnings can reach up to $18 per hour, depending on expertise and pace. Pay rates differ by project scope, complexity, and required skills.

Role Overview Toloka AI seeks a Freelance AI Instructor with expertise in Chemistry and Python. This remote contract role is based in Belo Horizonte, State of Minas Gerais, Brazil. What You Will Do Train and mentor aspiring AI professionals in applying Python to chemistry topics and problems Guide learners through practical examples and real-world applications at the intersection of AI and chemistry About the Role This position offers the chance to influence the next generation of AI talent in chemistry, all while working remotely. Toloka AI values instructors who can share technical knowledge clearly and support learners as they build new skills.

Please submit your CV in English and indicate your English proficiency level. About Mindrift Mindrift connects specialists with project-based roles in AI for technology companies. The platform focuses on assessing, testing, and improving AI systems. Participation is project-based and does not represent permanent employment. Role Overview This freelance position suits electrical engineers with Python skills who are interested in part-time, flexible projects. Contributors take on a variety of engineering challenges to support AI training and evaluation. Sample Tasks Design computational engineering problems that mirror real-world processes Create Python-based problems for engineering calculations and simulations Ensure tasks require significant computation, using numerical methods or iterative approaches Develop problems focused on system design, optimization, and analytical methods Base problems on actual research challenges or practical engineering scenarios Validate solutions in Python, using standard engineering libraries Document problem statements clearly and provide verified answers Qualifications Degree in Electrical Engineering or a related field Proficiency with Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar is also considered At least 2 years of professional experience in applied work, research, or teaching Strong grasp of engineering constraints and practical approximations Excellent written English (C1 level or higher) Professional certifications (such as CMME, SAS Certifications, CAP) and international or applied project experience are a plus How the Process Works Apply Pass qualifications Join a project Complete assigned tasks Receive compensation Project Commitment During active project phases, expect an estimated 10–20 hours per week, depending on project needs. Actual workload may vary. Compensation Contributors can earn up to $14 per hour, depending on contribution and project complexity. Pay rates may differ across projects based on their requirements and scope. Location This is a remote, project-based role open to candidates in Belo Horizonte, State of Minas Gerais, Brazil.

We invite you to submit your CV in English and specify your English proficiency level.Mindrift links talented specialists with project-based AI opportunities for top technology firms, concentrating on the assessment, evaluation, and enhancement of AI systems. Please note that these engagements are project-based and do not constitute permanent employment.Opportunity OverviewEach project presents distinct tasks; contributors may:Craft innovative computational chemistry challenges that replicate genuine chemistry research workflows;Formulate problems necessitating Python programming for resolution (utilizing libraries such as numpy, scipy, and other chemical libraries);Guarantee that challenges are computationally demanding, unsolvable manually within feasible time limits (days/weeks);Devise problems that require complex reasoning in physical chemistry, quantum chemistry, and molecular modeling;Anchor challenges in authentic research issues or practical applications within the chemistry field;Validate solutions employing Python with established computational chemistry methodologies;Clearly document problem statements and furnish verified accurate solutions.Desired QualificationsThis role suits chemistry experts with Python experience who are willing to engage in part-time, non-permanent projects. Ideal candidates should possess:A degree in Chemistry or a related discipline;Proficiency in Python for numerical validation. Familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, domain-specific libraries, or any programming language may be considered equivalent;A minimum of 2 years of relevant professional experience, including applied, research, or teaching experience;Expertise in numerical methods within chemistry;A solid understanding of computational chemistry concepts and techniques;Strong written English skills (C1+ level).Process OverviewApply → Pass qualifications → Engage in a project → Execute tasks → Receive paymentProject Time CommitmentFor this project, tasks are anticipated to require approximately 10–20 hours per week during active phases, dependent on project specifications. This is an estimate and not a guaranteed workload.Compensation DetailsContributors can earn up to $14 per hour, contingent on their level of expertise and contribution pace. Compensation may vary depending on the project's scope, complexity, and necessary expertise. Note that other projects on the platform may offer different compensation levels based on their specific requirements.

Role Overview Toloka AI is looking for a Freelance Legal Consultant with deep knowledge of US law to support AI training projects. This remote role is based in Belo Horizonte, State of Minas Gerais, Brazil. What You Will Do Apply legal expertise to guide the development and improvement of AI models focused on US law. Review, analyze, and provide feedback on legal content to ensure accuracy and relevance for AI training. Offer insights that help shape legal technology solutions. Location Remote , Belo Horizonte, State of Minas Gerais, Brazil

To apply, submit your CV in English and indicate your English proficiency level. Mindrift connects subject matter experts with project-based AI work for leading technology companies. Work is organized by project and does not represent permanent employment. Role overview This freelance, remote position focuses on designing and documenting advanced physics problems to support AI training. Assignments vary and may include: Developing original optics problems that reflect real-world research processes in physics Ensuring problems are computationally intensive and not easily solved by hand Creating scenarios requiring complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics Basing challenges on actual research questions or practical applications in optics and physics Writing clear problem statements and supplying verified solutions Requirements Degree in Physics (theoretical, experimental, or computational) or a closely related field At least 2 years of professional experience, which may include research, applied, or teaching roles Experience with numerical simulation techniques Ability to design problems that mirror physics research workflows Creative approach to developing problems across multiple physics domains Familiarity with modeling and approximation methods in physics Strong written English skills (C1 level or higher) Project commitment Typical workload ranges from 10 to 20 hours per week during active projects. Actual hours may vary based on project needs. Compensation Earnings can reach up to $14 per hour, depending on contribution level and project complexity. Rates may differ by project scope and required expertise. Application process Apply with a CV in English and specify your English proficiency Complete qualification(s) Join a project Finish assigned tasks Receive compensation Location: Remote , Belo Horizonte, State of Minas Gerais, Brazil

To apply, please submit your CV in English and indicate your English proficiency level. About Mindrift Mindrift connects skilled specialists with project-based AI work at leading tech companies. The focus is on testing, evaluating, and improving AI systems. These roles are not permanent employment but are structured around specific projects. Role Overview: Freelance AI Trainer – Statistics & Python Specialist This remote, freelance position is open to candidates based in Belo Horizonte, State of Minas Gerais, Brazil. The work centers on designing and validating computational statistics problems that reflect real mathematical research and require Python programming for solutions. What You Will Do Design original computational statistics problems modeled after real-world mathematical research workflows. Create challenges that require Python programming solutions, using libraries such as Numpy, SciPy, and Sympy. Ensure problems are computationally intensive and cannot be solved manually in a reasonable time. Develop problems involving complex reasoning in areas like number theory, combinatorics, graph theory, and numerical analysis. Base challenges on authentic research questions or practical mathematical applications. Validate solutions in Python with standard mathematical libraries. Document problem statements clearly and provide verified, correct answers. Requirements Degree in Statistics or a related discipline. Proficiency in Python for numerical validation. Experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, other domain-specific libraries, Stata, or other programming languages is also acceptable. At least 2 years of relevant professional experience in applied, research, or teaching roles. Strong written English skills (C1 proficiency or higher). Professional certifications (such as CMME, SAS Certifications, CAP) and experience with international or applied projects are considered an advantage. How Projects Work Apply Pass qualifications Join a project Complete assigned tasks Receive payment Time Commitment During active project phases, tasks are estimated to require about 10–20 hours per week. Actual workload may vary and is not guaranteed. This estimate applies only when the project is active. Compensation Contributors can earn up to $16 per hour, depending on experience and the pace of contributions. Pay rates may vary between projects based on their scope, complexity, and required expertise.

Please submit your CV in English and specify your English proficiency level. This freelance contract with Toloka AI (via Mindrift) is open to material scientists with strong Python skills. The focus is on supporting AI development for technology companies. The role is remote and based in Belo Horizonte, State of Minas Gerais, Brazil. This is not a permanent position, but a flexible, project-based opportunity. Key responsibilities Develop original material engineering problems that mirror real engineering workflows Design challenges involving Python programming for calculations and simulations Ensure problems require computational effort, using numerical methods or iterative techniques Create scenarios focused on system design, optimization, and analysis Draw from real-world research or practical engineering applications Validate solutions using Python and standard engineering libraries Write clear problem statements and provide accurate, verified solutions Requirements Degree in Material Science or a related discipline 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 experience in applied work, research, or teaching Understanding of practical engineering constraints and approximations Excellent written English skills at C1 level or higher Project details Estimated workload is 10–20 hours per week during active project phases. Actual hours may change based on project needs and are not guaranteed. Compensation Earnings can reach up to $14 per hour. Pay depends on contribution, pace, and project requirements. Compensation may vary with project complexity and scope. Application process Apply in English, including your CV and English proficiency level Complete required qualifications Join a project when invited Finish assigned tasks Receive compensation for completed work This is a freelance, project-based position. Permanent employment is not available.

Please submit your CV in English and specify your English proficiency level. About the Role Mindrift connects skilled specialists with project-based AI work for leading technology companies. Assignments focus on testing, evaluating, and improving AI systems. Note: This is a freelance, project-based role and does not represent permanent employment. What You Will Do Create original computational biology challenges that mirror real research workflows Design problems that require Python programming to solve, often using libraries like Numpy, SciPy, or BioPython Ensure challenges are complex enough that they cannot be solved manually within reasonable timeframes Develop scenarios involving advanced reasoning in bioinformatics, systems biology, or molecular modeling Base problems on real research questions or practical biological applications Validate solutions using Python and established computational biology tools Document problem statements clearly and provide accurate, verified answers Who We’re Looking For Degree in Biology or a related field Proficient in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, or SciPy is also valued At least 2 years of professional experience in applied biology, research, or education Experience analyzing biological data and working with algorithms Familiarity with bioinformatics tools and computational biology methods Strong written English skills (C1+ level) How to Apply Apply Pass qualification(s) Join a project Complete assigned tasks Receive compensation Time Commitment During active project phases, expect to spend about 10–20 hours per week, depending on project needs. This estimate applies only while projects are active and is not a guaranteed workload. Compensation Contributors can earn up to $14 per hour, depending on experience and work pace. Actual rates may vary by project based on complexity, scope, and expertise required. Location This is a remote position based in Belo Horizonte, State of Minas Gerais, Brazil.

Toloka AI seeks a Freelance English Writer to contribute to ongoing AI development projects. This remote contract role is based in Belo Horizonte, State of Minas Gerais, Brazil. The main focus is supporting the improvement of machine learning models as an AI Trainer. Responsibilities Create and edit English-language content used for AI training Refine and update existing materials to enhance the quality and accuracy of machine learning outputs Location This position is remote, with a base in Belo Horizonte, State of Minas Gerais, Brazil.

Please submit your resume in English and include your English proficiency level. Toloka offers freelance projects that support artificial intelligence development. The company connects people worldwide to tasks that improve AI systems. More information is available at toloka.ai. Toloka Annotators works with leading technology companies on Generative AI projects. The team brings together individuals from many countries to provide real human input, helping AI systems become more accurate and reliable. Role overview Freelance AI Trainers and Annotators help AI systems better understand language and information. When projects are active, tasks may include evaluating AI-generated content, fact-checking, or comparing different online responses. Main responsibilities Review data such as text, images, or videos for each project Tag or categorize content according to project guidelines Identify and report content that is factually incorrect, sensitive, inappropriate, or unclear Project details This is a project-based freelance role. Tasks are available only when projects are active. Invitations to participate depend on your profile and current needs. Work is remote from Belo Horizonte, State of Minas Gerais, Brazil. Compensation Pay depends on the project scope and required skills. AI trainers and annotators can earn up to $9 per hour for certain projects.

toloka-ai is hiring a Freelance Junior Journalist - AI Trainer for remote work based in Belo Horizonte, State of Minas Gerais, Brazil. This role supports content creation and helps train AI systems. Responsibilities Provide accurate data and detailed feedback to help improve AI models Use AI tools and follow established workflows to complete content-related tasks Develop journalistic skills while working in a rapidly evolving field Requirements Interest in journalism and new AI technologies Willingness to learn and adapt as the field changes Strong ability to deliver clear, high-quality input and thoughtful insights