Freelance Optical Engineer with Python Expertise - AI Training Opportunities

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.

We kindly request that you submit your CV in English and specify your level of English proficiency.At Mindrift, we connect talented specialists with exciting project-based opportunities in AI for top-tier tech companies, focusing on testing, evaluating, and enhancing AI systems. Please note that participation is on a project basis and does not constitute permanent employment.Opportunity OverviewEach project presents distinct challenges; however, contributors may be involved in the following tasks:Designing original computational physics problems that simulate authentic physics research workflows;Creating problems that necessitate Python programming for resolution (utilizing Numpy, SciPy, Sympy);Ensuring the problems are computationally demanding and cannot be manually solved within a reasonable timeframe (days to weeks);Developing problems that require intricate reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics;Grounding problems in real research challenges or practical applications from the field of physics;Validating solutions using Python with established physics simulation libraries;Thoroughly documenting problem statements and providing accurately verified solutions.Ideal Candidate ProfileThis opportunity suits physicists with Python experience who are open to part-time, non-permanent projects. The ideal candidates will possess:A degree in Physics (Theoretical, Experimental, or Computational) or a related discipline;Proficiency in Python for numerical validation; knowledge of MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or other domain-specific libraries is also acceptable;A minimum of 2 years of professional experience, which may include applied, research, or teaching experience;Familiarity with numerical simulation methods;The ability to design problems that reflect real physics research workflows;Creative problem design skills across various physics domains;Understanding of physics modeling and approximation techniques;Strong command of written English (C1+ level).How the Process WorksApply → Pass qualifications → Join a project → Complete assigned tasks → Receive payment.Project CommitmentDuring active phases, tasks are estimated to require approximately 10–20 hours per week, depending on project needs. This is an estimate and does not guarantee a specific workload during the project's lifecycle.CompensationContributors can earn up to $45 per hour, contingent on their expertise and contribution pace. Compensation may vary across projects based on scope, complexity, and required skills. Please note that other projects on our platform may offer different earning potential 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

We kindly request that you submit your CV in English, along with your proficiency level in the English language.Mindrift connects talented professionals with project-based AI opportunities at leading technology firms, focusing on the testing, evaluation, and enhancement of AI systems. This engagement is project-based and does not constitute permanent employment.Key Responsibilities:Although each project presents distinct tasks, participants may:Design innovative computational engineering challenges that replicate real-world engineering workflows;Develop problems necessitating Python programming for engineering calculations and simulations;Ensure challenges are computationally intensive, requiring numerical methods or iterative solutions;Create projects involving system design, optimization, and analysis;Base challenges on real research issues or practical applications in engineering;Verify solutions using Python and established engineering libraries;Document problem statements clearly and provide verified correct solutions.Qualifications:This role is ideally suited for engineers with experience in Python who are open to part-time, non-permanent projects. The ideal candidate will possess:A degree in Mechanical Engineering or a related discipline;Proficiency in Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, domain-specific libraries, or other programming languages is acceptable;A minimum of 2 years of professional experience, including applicable applied, research, or teaching experience;A solid understanding of practical engineering constraints and approximations;Excellent written English skills (C1+);Professional certifications (e.g., CMME, SAS Certifications, CAP) and experience with international or practical projects are advantageous.Process Overview:Submit application → Pass qualifications → Join a project → Complete assigned tasks → Receive payment.Project Time Commitment:For this project, tasks are estimated to require approximately 10–20 hours per week during active phases, contingent upon project requirements. This is an estimate and not a guaranteed workload.Compensation:Contributors may earn up to $50 per hour, depending on their experience and contribution pace. Compensation varies by project based on scope, complexity, and required expertise. Please note that other projects may present different earnings based on their specific requirements.

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.

We invite you to submit your CV in English, including your proficiency level in English.At Mindrift, we specialize in connecting talented professionals with exciting project-based AI opportunities at leading tech firms. Our focus is on testing, evaluating, and enhancing AI systems. Note that this is a project-based role, not a permanent position.Opportunity OverviewEach project presents unique challenges, and contributors may be tasked with:Creating original computational statistics problems that reflect genuine mathematical research workflows;Formulating problems that require Python programming for solutions (utilizing libraries such as Numpy, SciPy, and Sympy);Designing problems that are computationally intensive, taking days or weeks to solve manually;Developing scenarios that demand complex reasoning across areas like number theory, combinatorics, graph theory, and numerical analysis;Grounding problems in real research challenges or practical applications in mathematics;Validating solutions using Python and standard mathematical libraries;Clearly documenting problem statements and supplying verified correct answers.Ideal Candidate ProfileThis opportunity is well-suited for statistics experts with Python experience, open to engaging in part-time, non-permanent projects. We prefer candidates who have:A degree in Statistics or a related field;Proficiency in Python for numerical validation, with knowledge of MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or other domain-specific libraries considered equivalent;A minimum of 2 years of professional experience in applied research or teaching;Strong written English skills (C1+ level);Professional certifications (e.g., CMME, SAS Certifications, CAP) and experience in international or applied projects will be advantageous.Application ProcessApply → Pass qualifications → Join a project → Complete tasks → Get compensatedProject CommitmentFor this project, contributors can expect to dedicate approximately 10–20 hours per week during active phases, contingent on project needs. This is an estimate and not a guaranteed workload.CompensationContributors may earn up to $50 per hour, contingent upon their level of expertise and the pace of their contributions. Compensation varies by project scope, complexity, and required skills, and other projects on the platform may offer different compensation rates.

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/.

Please submit your CV in English and specify your proficiency level in English.Mindrift specializes in connecting skilled professionals with project-based AI opportunities for top-tier technology companies, concentrating on the assessment, evaluation, and enhancement of AI systems. This role is project-based and does not entail permanent employment.Opportunity OverviewContributors to our projects may engage in a variety of tasks, including:Creating innovative computational physics problems that replicate authentic physics research workflows;Designing problems that necessitate Python programming for resolution (utilizing Numpy, SciPy, Sympy);Ensuring that the problems are computationally demanding and cannot be solved manually within reasonable periods (days to weeks);Developing problems that involve complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics;Formulating problems based on real-world research challenges or practical applications within the field of physics;Validating solutions through Python using standard physics simulation libraries;Documenting problem statements clearly and supplying verified correct answers.Candidate ProfileThe ideal candidate will be a physicist with Python experience, interested in part-time, non-permanent projects. We seek individuals who possess:A degree in Physics (Theoretical, Experimental, or Computational) or related disciplines;Proficiency in Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or any domain-specific programming language is acceptable;A minimum of 2 years of relevant professional experience (applied, research, or teaching experience is applicable);Expertise in numerical simulation methodologies;The ability to design problems that reflect actual physics research workflows;Creative problem-solving skills across various fields of physics;Knowledge of physics modeling and approximation techniques;Strong written proficiency in English (C1 or higher).Application ProcessApply → Pass evaluations → Join a project → Complete tasks → Receive paymentProject CommitmentFor this project, tasks are estimated to require approximately 10–20 hours per week during active phases, depending on specific project demands. This estimate is not a guaranteed workload and applies solely while the project is ongoing.CompensationParticipants in this project can earn up to $45 per hour, contingent upon their skill level and pace of contributions. Compensation varies across projects based on scope, complexity, and required expertise. Please be aware that other projects on the platform may offer different earning potential based on their specific needs.

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.

Join our dynamic team at Toloka AI as a Freelance Agent Evaluation Engineer! In this role, you will leverage your expertise to assess and enhance the performance of our AI models. Your contributions will be vital in ensuring the highest standards of quality and accuracy in our evaluations.This opportunity allows you to work remotely, providing flexibility while collaborating with a talented team of professionals. If you are passionate about AI technology and have a keen eye for detail, we want to hear from you!

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.