Freelance Data Science Engineer (Python & SQL)

This freelance, project-based role at Toloka AI (in partnership with Mindrift) focuses on developing and validating advanced mathematics problems for AI education. Work is remote from Manitoba, Canada, and all applications must include a resume in English along with your English proficiency level. Role overview Contributors design computational mathematics challenges that mirror real research workflows. Each project brings unique tasks, such as: Creating original mathematics problems that require significant computational effort (not solvable manually in a reasonable timeframe) Developing Python-based solutions using libraries like Numpy, SciPy, or Sympy Focusing on areas such as number theory, combinatorics, graph theory, and numerical analysis Basing problems on genuine research questions or real-world mathematical applications Validating solutions programmatically and documenting both problems and solutions clearly Requirements Degree in Mathematics (Pure or Applied) or a related field Strong Python skills for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar is also accepted At least 2 years of professional experience in applied mathematics, research, or teaching Background in numerical methods and symbolic computation Ability to design problems based on authentic mathematical research Understanding of computational complexity theory Excellent written English (C1 level or higher) Project commitment Projects typically require an estimated 10–20 hours per week during active phases. Actual workload may vary depending on project needs and is not guaranteed. Compensation Contributors can earn up to $35 per hour, depending on the project’s complexity, scope, and your contribution. Rates may differ for other projects on the platform. Application process Apply with your resume and English proficiency Pass qualification steps Join a project Complete assigned tasks Receive payment This is a non-permanent, part-time opportunity for mathematicians with Python expertise interested in project-based AI education work.

This freelance AI Trainer role with toloka-ai, in partnership with Mindrift, centers on developing and validating advanced statistics and Python programming challenges. The work supports AI system evaluation and improvement for leading technology companies. The position is remote and based in Manitoba, Canada. Engagement is project-based and not a permanent employment arrangement. Key Responsibilities Design computational statistics problems that mirror real-world mathematical research workflows. Create and document programming challenges that require Python to solve, using libraries such as Numpy, SciPy, and Sympy. Ensure each problem is computationally intensive and not easily solved by hand. Develop tasks involving complex reasoning in fields like number theory, combinatorics, graph theory, and numerical analysis. Base problems on genuine research challenges or practical mathematical applications. Validate solutions in Python with standard mathematical libraries. Provide clear problem statements and supply verified, correct answers. Requirements Degree in Statistics or a closely related field. Proficiency in Python for numerical validation. Knowledge of MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or other relevant libraries is valued. At least 2 years of professional experience in applied research or teaching. Strong written English skills at C1 level or above. Professional certifications (such as CMME, SAS Certifications, CAP) and experience in international or applied projects are considered assets. Project Commitment Estimated workload is 10–20 hours per week during active project periods. Actual hours may fluctuate based on project needs. Compensation Compensation is up to $38 per hour, depending on contribution and project complexity. Rates may vary for other projects on the platform according to requirements and expertise. How to Apply Submit a CV in English, highlighting English proficiency. The application process includes qualification steps, joining a project, completing assigned tasks, and receiving payment.

Toloka AI seeks a civil engineer with strong Python programming skills to join as a freelance AI trainer. This contract position is fully remote and open to candidates based in Manitoba, Canada. Role overview This role combines civil engineering expertise with Python development to support projects focused on training artificial intelligence systems. The position involves collaborating with team members and contributing technical insights that influence project direction. What you will do Apply civil engineering knowledge and Python programming to AI training projects Work with team members to refine and improve AI models Offer technical insights that help shape project outcomes Location This is a remote role for candidates located in Manitoba, Canada.

Mindrift connects skilled professionals with project-based roles in AI development, focusing on testing, evaluating, and improving advanced AI systems. This freelance position is open to candidates based in Manitoba, Canada, and is not a permanent role. Role overview The Chemistry & Python Specialist will contribute to projects by designing and validating complex computational chemistry problems. Tasks emphasize real-world research scenarios and require strong analytical and programming abilities. Contributors play a key part in shaping AI systems used by leading technology firms. What you will do Create original computational chemistry problems that reflect authentic research workflows Develop programming challenges in Python, using libraries such as NumPy and SciPy Design tasks that are computationally intensive and require extended effort to solve Formulate problems involving advanced reasoning in physical chemistry, quantum chemistry, and molecular modeling Base problem statements on real research challenges or practical chemistry applications Validate solutions using Python and established computational chemistry methods Document problem statements clearly and supply verified solutions Requirements Degree in Chemistry or a closely related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Pandas, SciPy, or domain-specific libraries is also considered At least 2 years of professional experience in applied, research, or teaching roles Expertise in numerical methods relevant to chemistry Strong understanding of computational chemistry principles and techniques Exceptional written English skills at C1 level or higher How projects work The process involves several steps: Application, Qualification, Project Assignment, Task Completion, and Payment. Each project phase may differ in scope and requirements. Time commitment During active project phases, tasks typically require 10–20 hours per week. Actual workload may vary depending on project needs. Compensation Contributors can earn up to $35 per hour, depending on expertise and task completion speed. Compensation varies by project scope, complexity, and required skills. Other projects on the platform may offer different pay rates. Please submit your CV in English and indicate your level of English proficiency when applying.

Please submit your CV in English and include your English proficiency level. This freelance role with Mindrift focuses on engineering and computational projects for the AI sector. Work is remote, based in Manitoba, Canada. Mindrift partners with technology firms to test and improve AI systems. This is a project-based contract, not a permanent position. What you will do Design engineering challenges that mirror real-world electrical engineering processes Create Python-based problems for calculations and simulations Develop tasks involving system design, optimization, and analysis Ensure problems require rigorous computational solutions, including numerical or iterative methods Build problems inspired by research or practical engineering scenarios Validate solutions using Python and established engineering libraries Document problem statements clearly and provide verified solutions Requirements Degree in Electrical Engineering or a related discipline Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is a plus Minimum 2 years of professional experience (applied, research, or teaching) Understanding of practical engineering constraints and approximations Excellent written English (C1 level or higher) Professional certifications (such as CMME, SAS Certifications, CAP) and international or applied project experience are advantageous Project details During active projects, typical commitment is 10-20 hours per week, depending on project needs. This is an estimate and not a guaranteed workload. Compensation Earn up to $39 per hour, based on expertise and pace. Actual rates depend on project scope and complexity. Application process Apply Pass qualifications Join a project Complete tasks Receive payment

Toloka AI is hiring a Freelance Mechanical Engineer & Python Specialist to contribute to AI training resources. This contract position is fully remote for candidates located in Manitoba, Canada. Key responsibilities Develop technical training materials using expertise in mechanical engineering and Python programming Assist with refining and enhancing processes for training AI systems Location This is a remote role open to residents of Manitoba, Canada.

Are you an education expert fluent in French, passionate about influencing the future of artificial intelligence? As large-scale language models advance from simple chatbots to robust teaching aids, they hold the potential to transform educational experiences. With the right training data, tomorrow's AI can customize learning paths, enhance multilingual classrooms, and make quality education accessible globally. Your expertise is the cornerstone of this evolution—we invite you to join us in powering the next generation of AI. We are seeking education specialists who excel in curriculum development, instructional design, pedagogy, assessment strategies, educational psychology, classroom technology, and inclusive teaching methodologies, particularly within French-speaking educational systems. You will engage with sophisticated language models on various topics, including lesson planning, differentiated instruction, learning standards, student engagement, bilingual education, teacher training, and both formative and summative evaluations—documenting all identified issues to strengthen model reasoning. Your typical day will involve conversing with the model in both English and French about practical educational scenarios and theoretical concepts, verifying pedagogical soundness and accuracy, capturing reproducible error traces, and recommending enhancements to our prompt engineering and evaluation metrics. A master’s degree in education, instructional design, educational psychology, or a related discipline is preferred. Fluency in French, experience in classroom or curriculum development, and familiarity with traditional and digital learning environments are essential. Strong metacognitive communication skills—“showing your work”—are crucial. Ready to leverage your educational expertise and French proficiency to shape the knowledge base for future AI? Apply now and start teaching the model that will educate the world.

Please submit your CV in English and indicate your English proficiency level. Role overview Mindrift offers project-based AI contract work for technology companies. As a Freelance AI Trainer specializing in physics and Python, the focus is on testing, evaluating, and helping to improve AI systems. This is a contract position, not a permanent job. What you will do Create original computational physics problems modeled after real research workflows. Design challenges that require Python programming to solve, often using libraries such as Numpy, SciPy, or Sympy. Ensure problems are computationally intensive and not easily solvable by hand. Develop questions involving complex reasoning in areas like mechanics, electromagnetism, thermodynamics, and quantum mechanics. Base scenarios on real research or practical physics applications. Validate solutions using Python and established physics simulation libraries. Document problems clearly and provide correct, verified answers. Requirements Background in physics (theoretical, experimental, or computational) or a related field. Proficiency in Python for numerical validation. Experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, Stata, or other programming languages is valued. At least 2 years of professional experience in applied, research, or teaching roles. Familiarity with numerical simulation techniques. Ability to design problems that reflect authentic physics research processes. Creative problem-solving skills across multiple physics domains. Knowledge of physics modeling and approximation methods. Strong written English skills at C1 level or higher. Project commitment Workload is estimated at 10–20 hours per week during active project phases. Actual hours may vary depending on project needs and timelines. Compensation Earn up to $35 per hour, depending on contribution and pace. Rates may differ for other projects on the platform, based on scope and expertise required. Application process Apply Pass qualifications Join a project Complete assigned tasks Receive compensation Location: Remote , Manitoba, Canada

Please submit your CV in English and indicate your English proficiency level. Mindrift connects professionals with project-based AI work for technology companies. The focus is on assessing, evaluating, and improving AI systems. All positions are project-based and do not offer permanent employment. Role overview This freelance, remote position is available to candidates based in Manitoba, Canada. Material scientists with strong Python expertise will design and validate engineering challenges for AI projects. The work centers on creating realistic problems and ensuring solutions are accurate and practical. Main responsibilities Develop materials engineering problems that reflect real-world processes Create tasks requiring Python programming for calculations and simulations Ensure problems involve computational complexity, such as numerical methods or iterative solutions Design challenges focused on system design, optimization, and analysis Base problems on authentic research or practical engineering scenarios Validate all solutions using Python and standard engineering libraries Document problem statements clearly and provide verified solutions Requirements Degree in Material Science or a related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar libraries is a plus At least 2 years of relevant experience in industry, research, or teaching Solid understanding of practical engineering constraints and approximations Strong written English skills at C1 level or higher Project commitment Expect to contribute roughly 10–20 hours per week during active project phases. Actual workload may vary depending on project needs. This estimate applies only during active phases and does not guarantee a set number of hours. Compensation Earn up to $35 per hour, depending on contribution and pace. Compensation may vary by project based on complexity, scope, and required expertise. Other projects on the platform may offer different rates depending on their needs. Application process Apply Meet qualifications Join a project Complete assigned tasks Receive compensation

Toloka AI is seeking a Freelance AI Trainer with a strong background in biology and Python programming. This remote contract role is open to candidates based in Manitoba, Canada. Role overview This position centers on developing AI training programs that support learning in the biological sciences. The work blends subject matter expertise in biology with practical Python programming skills to create engaging educational content. What you will do Design training materials focused on biology and Python applications Conduct workshops to facilitate learning and skill development Collaborate with a multidisciplinary team to shape impactful educational experiences Who will succeed This role suits those who enjoy combining scientific knowledge with programming to support innovative AI projects. Experience in both biology and Python is essential.

Please submit your CV in English and indicate your level of English proficiency. Mindrift connects experienced data scientists with contract-based AI projects for major tech companies. Work centers on testing, evaluating, and improving AI systems across a range of industries. This is a project-based contract, not a permanent role. Role overview The Freelance Data Scientist (Python & SQL) will design and validate complex computational problems that reflect real analytical workflows. Projects may involve sectors like telecom, finance, government, e-commerce, and healthcare. Assignments focus on creating and documenting original data science problems that mirror practical business challenges. What you will do Create computational data science problems based on real business scenarios. Develop tasks requiring advanced Python programming, using libraries such as Pandas, Numpy, Scipy, Scikit-learn, Statsmodels, Matplotlib, and Seaborn. Ensure problems are computationally demanding and cannot be solved manually in a short time. Design scenarios involving complex reasoning: data processing, statistical analysis, feature engineering, predictive modeling, and extracting insights. Write deterministic problems with reproducible results, using fixed random seeds as needed. Align problem statements with business needs such as customer analytics, risk assessment, fraud detection, forecasting, optimization, and operational efficiency. Address the full data science pipeline: ingestion, cleaning, exploratory analysis, modeling, validation, and deployment considerations. Incorporate big data processing elements that require scalable solutions. Validate solutions using Python and standard statistical methods. Document problems clearly in realistic business contexts and provide verified solutions. Requirements At least 5 years of hands-on data science experience with proven business impact. Portfolio of completed projects or publications demonstrating real-world problem-solving. Advanced Python programming for data science (Pandas, Numpy, Scipy, Scikit-learn, Statsmodels). Strong knowledge of statistical analysis and machine learning, including algorithms and practical applications. Strong SQL skills for data manipulation and analysis. Experience with GenAI tools (LLMs, RAG, prompt engineering, vector databases). Familiarity with MLOps and model deployment workflows. Knowledge of frameworks such as TensorFlow, PyTorch, or LangChain. Exceptional written English (C1 level or higher). Application process Apply with an English CV and indicate your English proficiency. Complete qualification steps. Join a project when matched. Complete assigned tasks. Receive compensation for your contributions. Location: Remote , Manitoba, Canada Note: This is a part-time, project-based contract and does not constitute permanent employment.

This freelance Quantum Research Scientist & AI Trainer role at Mindrift is project-based and remote, open to candidates based in Manitoba, Canada. Mindrift partners with specialists to support AI development at top tech companies, focusing on evaluating and improving AI systems through short-term assignments. These roles are not permanent employment positions. Role overview This position is designed for quantum researchers with strong Python programming skills who are interested in part-time, non-permanent projects. The main focus is on creating and validating computational physics challenges that reflect real research workflows. What you will do Design original computational physics problems based on authentic research scenarios Create tasks that require Python programming to solve, often using libraries such as Numpy, SciPy, or Sympy Ensure problems are computationally intensive and not easily solvable by hand Develop challenges involving complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics Base problems on real-world research questions or practical physics applications Validate solutions in Python using standard physics simulation libraries Document problem statements clearly and provide verified, correct answers Requirements Degree in Physics (theoretical, experimental, or computational) or a related field Proficiency in Python for numerical validation; experience with tools like MATLAB, R, C, SQL, Numpy, Pandas, or SciPy is valued At least 2 years of professional experience in applied, research, or teaching roles Experience with numerical simulation techniques Ability to design problems that mirror real research workflows in physics Creativity in developing problems across various physics domains Familiarity with physics modeling and approximation methods Strong written English skills at C1+ level Project commitment During active project phases, expect to spend about 10–20 hours per week on assigned tasks. Workload may vary and is only guaranteed during active project periods. Compensation Contributors can earn up to $35 per hour, depending on expertise and task completion rate. Pay rates vary by project scope, complexity, and required skills. Other projects on Mindrift may offer different compensation levels. Application process Submit a CV in English and specify your English proficiency level Complete the qualification process Join a project Work on assigned tasks Receive payment

Please submit your CV in English and specify your English proficiency level. Mindrift connects experienced professionals with project-based AI work for technology companies. Projects focus on evaluating, testing, and improving AI systems. This is a freelance, project-based position, not a permanent role. Role overview This freelance Optical Engineer position centers on designing and validating computational physics problems that require Python programming. Work includes: Creating original problems that reflect real research workflows in physics Formulating challenges that need Python (using Numpy, SciPy, Sympy) to solve Developing complex, computationally intensive problems that cannot be solved manually in a short time Designing reasoning sequences in areas like mechanics, electromagnetism, thermodynamics, and quantum mechanics Basing problems on real-world research or practical physics applications Validating solutions in Python with standard simulation libraries Documenting problem statements clearly and providing verified answers Requirements Degree in Physics (theoretical, experimental, or computational) or a related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, or SciPy is helpful At least 2 years of professional experience in applied physics, research, or teaching Background in numerical simulation methods Ability to design problems that mirror authentic research workflows Creative approach to problem design across multiple physics domains Knowledge of modeling and approximation techniques in physics Strong written English (C1+ proficiency) Project process The typical process: Apply, pass qualifications, join a project, complete assigned tasks, and receive payment. Time commitment During active projects, expect to spend about 10–20 hours per week. Actual hours may vary with project needs and are not guaranteed. Compensation Earn up to $35 per hour, depending on expertise and pace. Pay may differ by project based on complexity and required skills. Other projects on the platform may offer different compensation models depending on requirements.

This project-based contract calls for a freelance research physicist with strong Python skills. Mindrift offers remote roles for contributors based in Manitoba, Canada, focused on advancing artificial intelligence by developing and validating computational physics challenges. Role overview This position involves designing and verifying computational physics problems that simulate real research scenarios. Projects emphasize programming in Python and require familiarity with scientific libraries such as Numpy, SciPy, and SymPy. What you will do Develop original computational physics problems inspired by real research workflows. Create challenges that require Python programming to solve, using scientific libraries. Ensure problems are complex enough that manual solutions would take days or weeks. Design scenarios involving advanced reasoning in areas like mechanics, electromagnetism, thermodynamics, and quantum mechanics. Base each problem on genuine research challenges or practical physics applications. Verify solutions using Python and standard simulation tools. Document each problem clearly and provide validated answers. Requirements Strong background in physics research. Advanced Python programming skills, including experience with Numpy, SciPy, and SymPy. Ability to design and validate computationally intensive problems. Clear scientific communication in written English. Application instructions Submit a CV in English and specify your level of English proficiency.

Mindrift is hiring a Freelance Python Data Scraping Engineer for the Tendem project. This is a part-time, remote contract role available to candidates based in Manitoba, Canada. Mindrift partners specialists with technology innovators to advance Generative AI by combining real-world expertise with AI-driven projects. Role overview This contract centers on technical data extraction and web scraping for the Tendem project. The work combines human judgment with AI-powered workflows. Collaboration with Tendem Agents is a key part of the process: while they manage repetitive tasks, you focus on ensuring the quality and usability of the data collected. What you will do Lead end-to-end data extraction from complex and dynamic websites, producing structured and accurate datasets. Utilize internal tools such as Apify and OpenRouter, along with custom workflows, to streamline data collection and validation. Adjust scraping approaches to handle interactive or JavaScript-heavy sites, adapting to changes in site structure. Enforce data quality through validation checks, consistency across sources, and adherence to formatting standards before delivery. Scale up for large datasets using batching or parallelization, monitor for failures, and maintain stability as websites evolve. Requirements Practical experience using Python for web scraping, data extraction, and data processing tasks. Knowledge of tools like Apify and OpenRouter is helpful. Ability to troubleshoot and adapt to changing or dynamic web environments. Keen attention to detail and a commitment to high data quality. Compensation Contributors can earn up to $32 per hour, depending on skill level and pace. Actual rates vary based on project scope, complexity, and required expertise. How to apply Submit your application to get started. If qualified, Mindrift will match you with projects aligned to your technical background. The work is flexible and remote, so you can contribute on your own schedule. Projects may include coding, automation, and refining AI outputs, all supporting practical advances in AI capabilities.

Role overview Toloka AI seeks a Computer Science Specialist with strong Python experience for remote work on ongoing AI projects. This position is open to candidates living in Manitoba, Canada. The role centers on supporting the development and improvement of artificial intelligence systems. What you will do Contribute to a team dedicated to building and enhancing AI solutions Use Python to develop, test, and fine-tune AI-driven systems Collaborate with colleagues committed to advancing AI technology Work environment This is a fully remote position. Team members work virtually and participate from locations across Manitoba.

Please submit your CV in English and indicate your English proficiency level. toloka-ai, together with Mindrift, offers project-based freelance work for professionals interested in AI systems related to physics and optics. This is a remote contract role for candidates based in Manitoba, Canada. The position centers on evaluating and improving AI systems by designing and solving advanced optical and physics problems. This is not a permanent staff position; work is assigned according to current project needs. Key Responsibilities Design original optical problems that reflect real-world physics research workflows Create computationally intensive challenges that go beyond manual calculations Develop problems requiring advanced reasoning in areas such as mechanics, electromagnetism, thermodynamics, and quantum mechanics Base problem scenarios on actual research or practical applications in optics and physics Clearly document each problem statement and provide accurate, verified solutions Requirements Degree in Physics (theoretical, experimental, or computational) or a closely related field Minimum of 2 years of professional experience in applied, research, or teaching roles Proficiency with numerical simulation methods Experience designing problems based on real research processes in physics Creative approach to developing problems across various physics domains Familiarity with modeling and approximation techniques in physics Strong written English skills at C1 level or above How to Join Apply Meet qualification criteria Join a project Complete assigned tasks Receive compensation Project Commitment During active project phases, contributors usually spend 10–20 hours per week. Workload may vary and is not guaranteed outside of these periods. Compensation Earnings can reach up to $35 per hour, depending on expertise and pace. Project rates vary based on complexity, scope, and required knowledge. Other projects on the platform may offer different compensation depending on their requirements.

Please submit your CV in English and include your English proficiency level. This freelance, project-based role focuses on evaluating AI coding agents for Mindrift, in partnership with toloka-ai. The position is open to remote candidates based in Manitoba, Canada. It is not a permanent job, but rather a contract opportunity for skilled professionals interested in shaping how AI systems perform in real-world software development scenarios. Role overview The main responsibility is to help build a dataset that tests AI coding agents in situations modeled after authentic developer workflows. This involves designing complex tasks, setting up evaluation standards, and working within simulated environments that closely resemble actual software development settings. Key responsibilities Construct virtual companies using high-level plans, including realistic codebases, infrastructure, and supporting context such as documentation, conversations, and tickets to create a believable development history. Design and calibrate tasks from different stages of the virtual company, developing prompts and evaluation criteria to ensure tasks are solvable and fairly assessed. Create tasks within isolated environments that simulate a developer's workstation, featuring a Linux system, development tools (terminal, CLI), MCP servers (repository, task tracker, messenger, documentation), and a real web application codebase. Develop tests that accurately distinguish between correct and incorrect solutions, avoiding both overly strict and overly lenient standards. Collaborate with AI agents to verify that tests identify genuine issues, do not miss flawed solutions, and do not fail on valid ones. Review code generated by AI agents, analyze solution outcomes, and design edge cases and adversarial scenarios to strengthen evaluation. Incorporate feedback from expert QA reviewers who assess your work against established quality benchmarks. What this role does not include Data labeling Prompt engineering Writing code from scratch (the AI agent generates most code; your focus is on guidance and evaluation) This position involves frequent collaboration with advanced AI systems. Creating challenging tasks for modern models means staying close to the latest developments in AI technology.

Are you a passionate expert in the Persian language looking to influence the evolution of artificial intelligence? The landscape of large-scale language models is transforming from simple chatbots into robust platforms for linguistic exploration. By providing high-quality training data, we can empower AI to democratize education, keep up with innovative research, and enhance communication for Persian speakers globally. Your expertise is the key to driving this change—we invite you to be part of this exciting journey!We are actively seeking Persian language specialists who possess an in-depth understanding of Persian grammar, syntax, morphology, spelling, phonology, and pragmatics. In this role, you will critically evaluate advanced language models, focusing on aspects such as verb conjugation, sentence structures, ezāfe constructions, levels of politeness, regional dialects, and the subtleties of the Persian writing system—documenting challenges and failures to strengthen model reasoning.In a typical day, you will engage in dialogues with the model about linguistic scenarios, assess the accuracy and logical coherence of its outputs, document reproducible errors, and propose enhancements to our prompt engineering and evaluation methods.A master's degree or PhD in Persian language, linguistics, or a closely related discipline is preferred; candidates with peer-reviewed publications, teaching backgrounds, or practical linguistic analysis experience will stand out. Effective and transparent communication—demonstrating your thought process—is essential.If you're ready to leverage your Persian language skills to contribute to the AI knowledge base of the future, apply today and start shaping the model that will educate the world!