Freelance Mechanical Engineer & Python Specialist - AI Training

We invite you to submit your CV in English, clearly indicating your level of English proficiency.Mindrift specializes in connecting talented professionals with project-based AI opportunities for top technology companies, focusing on the testing, evaluation, and enhancement of AI systems. This position is project-based and not a permanent role.Key ResponsibilitiesAs a contributor, your tasks may include:Designing innovative computational physics problems that replicate authentic physics research workflows;Creating Python-based problems to solve using libraries such as Numpy, SciPy, and Sympy;Ensuring that problems are computationally intensive, requiring significant time to solve (days/weeks) rather than manual solutions;Developing scenarios that involve complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics;Using real research challenges or practical applications from the field of physics as a basis for problems;Validating solutions through Python with standard physics simulation libraries;Documenting problem statements clearly and providing verified correct answers.QualificationsThis role is ideal for physicists with Python experience who are looking for part-time, non-permanent project work. The ideal candidate will possess:A degree in Physics (Theoretical, Experimental, or Computational) or a related field;Proficiency in Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, and Stata is also acceptable;A minimum of 2 years of professional experience, which may include applied, research, or teaching experience;Experience in numerical simulation methods;The ability to create problems that reflect real physics research workflows;Creative problem-solving skills across various areas of physics;Familiarity with physics modeling and approximation techniques;Strong written English skills (C1+ level).How the Process WorksApply → Pass qualifications → Join a project → Complete tasks → Receive paymentProject Time ExpectationsDuring active phases, tasks are estimated to require approximately 10–20 hours per week based on project demands. This is an estimate and not a guaranteed workload.CompensationContributors can earn up to $14 per hour, depending on their level of expertise and contribution pace. Please note that compensation can vary by project based on scope, complexity, and required expertise. Other projects on the platform may offer different earning levels based on their specific requirements.

Please submit your CV in English, including your proficiency level.Mindrift connects talented specialists to project-based AI opportunities with leading technology firms, focusing on the critical tasks of testing, evaluating, and enhancing AI systems. Note that participation is project-based and does not constitute permanent employment.Key Responsibilities:Each project presents distinct tasks, where contributors may be required to:Create original computational statistics challenges that emulate actual mathematical research workflows.Develop problems that necessitate Python programming solutions (utilizing Numpy, SciPy, Sympy).Ensure problems are computationally demanding, making manual solutions impractical within reasonable timelines (days/weeks).Formulate problems that involve complex reasoning chains in fields such as number theory, combinatorics, graph theory, and numerical analysis.Ground problems in real research scenarios or practical applications drawn from mathematical practice.Validate solutions using Python with standard mathematical libraries.Clearly document problem statements and provide verified correct answers.Qualifications:This opportunity suits statistics experts with Python experience who are open to part-time, temporary projects. Ideal candidates will possess:A degree in Statistics or related disciplines.Proficiency in Python for numerical validation; knowledge of MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar programming languages may be considered equivalent.At least 2 years of relevant professional experience, which can include applied, research, or teaching roles.Strong written English skills (C1+).Professional certifications (e.g., CMME, SAS Certifications, CAP) and involvement in international or applied projects are advantageous.How It Works:Apply → Pass qualifications → Join a project → Complete assigned tasks → Receive payment.Project Time Expectations:During active phases, tasks are expected to require approximately 10–20 hours per week, based on project needs. This is a guideline and not a guaranteed workload.Compensation:Contributors can earn up to $16 per hour, depending on experience and contribution pace. Compensation may vary across different projects based on their scope, complexity, and required expertise.

Toloka AI seeks a Freelance AI Trainer with expertise in both biology and Python. This remote role focuses on designing and delivering training sessions that help learners apply artificial intelligence to biological research and related applications. Role overview The Biology and Python Specialist will create educational content and lead sessions for a range of participants. The goal is to make complex AI concepts accessible and relevant within the context of biology. What you will do Develop and present training materials that connect AI techniques with real-world biological problems Engage learners through clear explanations and practical examples using Python Adapt content to suit different backgrounds and experience levels Requirements Strong background in biology Proficiency in Python programming Interest in education and technology This freelance position is open to candidates based in Belo Horizonte, State of Minas Gerais, Brazil, and offers full remote flexibility.

Mindrift connects subject matter experts with AI projects for leading technology companies, focusing on testing, evaluation, and improvement of AI systems. This is a project-based freelance role, not a permanent position. Role overview As a Mathematics & Python Specialist, freelance AI trainers work on a range of challenging projects. Tasks may include: Creating original computational mathematics problems that mirror real mathematical research workflows Designing problems that require Python programming to solve, often using libraries such as Numpy, SciPy, or Sympy Ensuring problems are computationally intensive and cannot be solved manually in a reasonable timeframe Developing problems involving complex reasoning in areas like number theory, combinatorics, graph theory, and numerical analysis Basing problems on real-world research challenges or practical mathematical applications Validating solutions in Python with established mathematical libraries Clearly documenting problem statements and providing verified solutions Requirements Degree in Mathematics (Pure or Applied) or a related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is also accepted At least 2 years of professional experience, which may include applied, research, or teaching roles Experience with numerical methods and symbolic computation Ability to design problems reflecting authentic mathematical research workflows Understanding of computational complexity theory Strong written English skills (C1 level or higher) Process The process includes: Apply → Pass qualifications → Join a project → Complete tasks → Receive payment. Project commitment Tasks for this project are estimated at 10–20 hours per week during active phases. This is an estimate, not a guaranteed workload. Compensation Contributors may earn up to $14 per hour, depending on contribution level and pace. Actual rates may vary by project based on scope, complexity, and required expertise. Other projects on the platform may offer different earning opportunities. Please submit your CV in English and include your English proficiency level.

Role overview Toloka AI seeks a freelance AI Trainer who combines civil engineering experience with strong Python programming skills. This contract position is fully remote, with work based in Belo Horizonte, State of Minas Gerais, Brazil. What you will do Guide and support others in civil engineering topics and Python programming as part of AI-focused projects. Help develop and refine methods for AI training. Apply your expertise to influence how new AI tools are built for the civil engineering field. Location This is a remote role tied to Belo Horizonte, State of Minas Gerais, Brazil.

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.

Mindrift connects chemistry specialists with project-based freelance opportunities focused on AI system development for leading technology companies. These roles involve short-term projects and do not represent permanent employment. Role overview This freelance position centers on creating and validating computational chemistry challenges for AI training. Tasks vary by project and may include: Designing original computational chemistry problems that reflect real-world research workflows Developing challenges that require Python programming, using libraries such as numpy, scipy, or chemistry-specific tools Ensuring problems are computationally intensive and cannot be solved manually within a reasonable timeframe Incorporating advanced reasoning in areas like physical chemistry, quantum chemistry, and molecular modeling Basing problems on authentic research questions or practical chemistry applications Validating solutions in Python using established computational chemistry methods Clearly documenting problem statements and providing accurate, verified solutions Requirements Degree in Chemistry or a closely related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or domain-specific libraries is also valued At least 2 years of relevant professional experience (applied, research, or teaching) Expertise in numerical methods as applied to chemistry Strong understanding of computational chemistry concepts and techniques Excellent written English skills (C1 level or higher) Project structure The process includes submitting an application, passing qualification steps, participating in a project, completing assigned tasks, and receiving payment. Tasks typically require 10–20 hours per week during active phases, though actual workload may vary by project. Compensation Contributors can earn up to $14 per hour, depending on expertise and pace. Actual rates may vary based on project scope, complexity, and required skills. Other projects on the platform may offer different compensation levels. Please submit your CV in English and indicate your English proficiency level.

We invite you to submit your CV in English, including your English proficiency level.Mindrift connects talented specialists with project-based AI opportunities at leading technology companies, focusing on the testing, evaluation, and enhancement of AI systems. Please note that participation is project-based and does not constitute permanent employment.Overview of the OpportunityEach project will have distinct tasks, and contributors may be required to:Design innovative engineering problems that accurately represent real engineering processes;Develop Python-based solutions for engineering calculations and simulations;Create computationally intensive problems that necessitate numerical methods or iterative problem-solving;Work on system design, optimization, and analysis challenges;Base problems on actual research issues or real-world engineering applications;Utilize Python with standard engineering libraries to verify solutions;Clearly document problem statements and provide verified correct answers.Qualifications We SeekThis role is ideal for engineers with Python expertise who are interested in part-time, project-based work. The most qualified candidates will possess:A degree in Electrical Engineering or a related field;Proficiency in Python for numerical validation, with familiarity in MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or other domain-specific libraries being advantageous;A minimum of 2 years of professional experience, which can include applied work, research, or teaching;A solid understanding of practical engineering constraints and methodologies;Strong written English communication skills (C1+ level);Professional certifications (e.g., CMME, SAS Certifications, CAP) and experience in international or applied projects are highly valued.How the Process Works1. Apply → 2. Pass qualification(s) → 3. Join a project → 4. Complete tasks → 5. Get compensatedProject Time ExpectationsFor this opportunity, tasks are estimated to require approximately 10–20 hours per week during active project phases, based on specific project needs. Please note that this is an estimate and not a guaranteed workload, applicable only while the project is active.CompensationContributors can earn up to $14 per hour, depending on their expertise and contribution level. Compensation may vary across projects based on scope, complexity, and required skills. Please note that different projects on the platform may offer varying compensation levels.

Please submit your CV in English and indicate your English proficiency level. toloka-ai, through the Mindrift platform, offers project-based freelance work focused on evaluating, testing, and improving AI systems for leading technology companies. This is not a permanent position; assignments are tied to specific projects. Key responsibilities Create original optics challenges that reflect real research processes in physics. Design computationally intensive problems that require computer-based solutions. Develop tasks involving advanced reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics. Base problem sets on real-world research questions or practical scenarios in optics and physics. Document problem statements clearly and provide accurate, verified solutions. Requirements Degree in Physics (theoretical, experimental, or computational) or a closely related field. Minimum of 2 years in applied, research, or teaching roles. Experience with numerical simulation methods. Ability to construct problems that mirror authentic research approaches in physics. Creative mindset for developing problems across various physics domains. Knowledge of physics modeling and approximation techniques. Strong written English skills at C1 level or higher. Project workflow Apply Pass qualification steps Join a project Complete assigned tasks Receive compensation Time commitment During active projects, expect to dedicate approximately 10 to 20 hours per week. Actual hours may vary and are only required while a project is in progress. Compensation Rates are up to $14 per hour, depending on experience and the complexity of the tasks. Compensation may differ between projects based on their requirements. Location This freelance remote position is based in 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

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.

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

Role overview Toloka Annotators seeks a Freelance AI Trainer specializing in data annotation. This contract role centers on labeling and reviewing data to aid the development of machine learning models. The work directly supports AI training projects. What you will do Annotate and review data sets for use in AI model training Apply project guidelines to maintain accuracy and consistency throughout the annotation process Location This is a remote position for candidates located 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 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 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

Toloka Annotators connects people worldwide with generative AI projects from leading technology companies. The team brings together individuals to help advance artificial intelligence by involving real-world perspectives in its development. Role overview This freelance position centers on recording first-person videos of everyday household activities. Tasks might include washing dishes, vacuuming, walking a dog, folding laundry, or organizing rooms. These recordings will be used to train AI systems to better understand human actions in daily life. What you will do Capture detailed, hands-on videos of common household tasks in residential settings. Record activities such as cleaning, laundry, organizing spaces, and mapping your home. Follow provided guidelines closely to ensure accurate and diverse data collection. Requirements Access to a smartphone or camera that records at 30 FPS or higher with at least 1080p resolution. Ability to position the recording device at forehead or eye level, angled downward to show hand movements clearly. Use of the specified 'D&A' app for capturing and uploading videos. Videos must be clear, stable, well-lit, at least 15 seconds long, and focused on meaningful, uninterrupted activity. Benefits Earn up to $5 per hour, depending on the project, while completing household chores. Work is project-based and flexible, allowing selection of tasks that fit personal schedules. Contribute to AI research by helping systems learn from real-life scenarios.

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.

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.

Join the Inter team!At Inter, we believe that the future is shaped every day through the technology you develop, the connections you foster, and the ideas you bring to life. We are a comprehensive Super App offering complete digital banking solutions, investment opportunities, credit options, insurance, a marketplace, and various everyday services. But we are much more than that; we are a dynamic team that is always evolving.With this pace of innovation, new opportunities arise. Now is your chance to explore this smart way to invest in your career. Come and be part of #sanguelaranja!About the Position and MissionIn this role, you will create intelligent solutions using Generative AI that transform how people interact with technology. Your primary focus will be on developing advanced prompt engineering systems and implementing GenAI models that deliver innovative and precise experiences. More than just implementation, we want you to participate in AI architecture decisions and help enhance our capacity to create truly intelligent products.Your Daily Responsibilities:Develop Python applications integrated with GenAI models (OpenAI, Anthropic, Gemini)Create and optimize prompts for various use cases and domainsWork with frameworks like LangChain, LlamaIndex, and LangGraph for orchestration and creation of LLM agentsIntegrate language model APIs into distributed systemsParticipate in AI architecture decisions and best practices