Optical Engineer with Python - Freelance AI Trainer

Please submit your CV in English and specify your English proficiency level. toloka-ai, in partnership with Mindrift, offers contract-based, project work for professionals interested in evaluating, testing, and improving AI systems. This is a freelance role, not a permanent staff position. Role overview The Freelance AI Evaluation Engineer will contribute to building a dataset focused on assessing AI coding agents. The main goal is to evaluate how these agents perform on real-world developer tasks. Main responsibilities Set up virtual companies using a strategic plan, including codebases, infrastructure, and supporting context such as conversations, documentation, and tickets to create realistic development scenarios. Design and calibrate tasks representing different stages within the virtual company. This involves writing prompts, defining evaluation metrics, and ensuring tasks are solvable and fairly assessed. Create tasks in isolated environments that mimic a developer’s workstation. Use a Linux setup with development tools (terminal, CLI), MCP servers (repository, task tracker, messenger, documentation), and a real web application codebase. Develop tests that accept all valid solutions and reject incorrect ones. Balance strictness and flexibility to avoid penalizing good approaches or allowing flawed solutions. Work with an AI agent on test cases to ensure the tests catch real issues and do not miss poor solutions or unfairly block correct ones. Review code generated by AI agents, analyze reasons for success or failure, and create edge cases and adversarial scenarios to deepen evaluation. Refine your work based on feedback from expert QA reviewers to meet established quality standards. Important notes This is not a data labeling position. This is not a prompt engineering role. Writing code from scratch is not required. The AI agent handles most coding; the focus is on guiding and evaluating its output. Much of the work involves collaborating closely with AI systems. Crafting tasks that challenge advanced models means working alongside those same models throughout the process.

Role overview toloka-ai is hiring a Strategy Consultant to focus on AI training and evaluation. This remote role is available to candidates based in Israel. The position centers on helping organizations shape their approach to artificial intelligence through both strategic planning and hands-on support. What you will do Collaborate with top firms to guide and refine their AI strategies Contribute to the development and assessment of various AI initiatives Use strategic thinking to support clients in reaching their AI objectives Requirements Keen interest in artificial intelligence Background in strategic planning or consulting Ability to work well with diverse stakeholders Location This is a remote position open to candidates living in Israel.

Please submit your CV in English and indicate your English proficiency level. Role overview toloka-ai, working with Mindrift, brings together professionals for project-based AI assignments with major technology companies. This freelance optical engineer position centers on evaluating and improving AI systems. The role is not permanent and is structured around specific projects. What you will do Create original optics problems that reflect real-world research workflows in physics. Design computationally demanding problems that cannot be solved manually in a short timeframe. Develop scenarios requiring advanced reasoning across mechanics, electromagnetism, thermodynamics, and quantum mechanics. Base problem sets on authentic research challenges or practical applications in optics and physics. Write clear problem statements and provide verified solutions. Requirements Degree in Physics (Theoretical, Experimental, or Computational) or a closely related field Minimum of 2 years of professional experience (applied, research, or teaching) Experience using numerical simulation methods Ability to design problems modeled on genuine research workflows Creative thinking across multiple physics domains Understanding of physics modeling and approximation techniques Strong written English skills (C1 level or higher) How to apply Apply Pass qualifications Join a project Complete tasks Get paid Project commitment Active project periods typically involve 10–20 hours of work per week. Workload may fluctuate and is not guaranteed outside these phases. Compensation Earnings can reach up to $35 per hour, depending on experience and task completion rate. Compensation may vary by project based on complexity, scope, and required expertise. Other projects on the platform may offer different pay rates as needed.

Role overview Toloka AI seeks a Freelance Mechanical Engineer with advanced Python skills to contribute to AI model training projects. This position is fully remote and open to professionals based in Israel. Key responsibilities Apply mechanical engineering knowledge to enhance AI training methods and outcomes Develop, test, or refine Python-based tools and workflows that support AI and machine learning efforts Work collaboratively on projects centered around artificial intelligence and machine learning Work arrangement This freelance role offers flexibility to work from any location within Israel. Set your own schedule while contributing to Toloka AI's ongoing projects.

Immerse yourself in the luxury shopping experience and earn extra income while doing it!As a Freelance Luxury Brand Evaluator, you will step into high-end boutiques, provide valuable feedback through a quick online survey, and be rewarded for your insights.This unique opportunity is available for both male and female shoppers located in Tel Aviv. Join us in evaluating prestigious brands across watches, fashion, jewelry, and automotive sectors. You have the flexibility to choose which boutiques to assess and when, fitting evaluations into your schedule.If you are passionate about luxury shopping and keen to share your experiences, this is your chance to engage with the world’s leading brands.To apply for this position, please register for free at https://live.cxg.com/auth/index.asp#signup. Applications without prior registration may not be considered.

Role overview Toloka AI seeks a freelance AI trainer with expertise in civil engineering and strong Python programming skills. This position is fully remote and available to candidates based in Israel. What you will do Use civil engineering knowledge and Python to contribute to the training and improvement of AI models. Work closely with Toloka AI's team to assist in developing advanced AI systems. Location This is a remote role for candidates residing in Israel.

Submit your CV in English and include your English proficiency level. toloka-ai, in partnership with Mindrift, offers remote, project-based roles for experienced electrical engineers with strong Python skills. These freelance positions focus on supporting AI projects for major technology companies. Work is flexible and not tied to permanent employment. Role overview As a contributor, tasks vary by project. Typical responsibilities include designing computational engineering problems inspired by real-world scenarios, developing coding challenges that use Python for calculations and simulations, and ensuring tasks involve significant computation or iterative solutions. Contributors may also create challenges in system design, optimization, and analysis, and formulate problems based on current research or practical engineering needs. Verifying solutions in Python with common engineering libraries and writing clear, accurate problem statements are also key parts of the work. Requirements Degree in Electrical Engineering or a closely related field Proficiency in Python for numerical work Experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is valued Minimum of 2 years in applied, research, or teaching roles Understanding of practical engineering constraints and approximations Strong written English skills at C1 level or above Professional certifications (such as CMME, SAS Certifications, CAP) and international or applied project experience are considered a plus Application process Apply Pass qualifications Join a project Complete assigned tasks Receive compensation Workload and commitment Active project phases usually require 10-20 hours per week. Actual hours may vary based on project needs, and work is not guaranteed outside of active assignments. Compensation Earnings can reach up to $37 per hour, depending on expertise and the speed of contributions. Pay is determined by project scope, complexity, and required skills.

Toloka AI seeks a Freelance Junior Journalist - AI Trainer to join projects that blend journalism with artificial intelligence. This remote position is open to candidates located in Israel. The work centers on creating and refining content, always with attention to accuracy and relevance for real-world news and stories. Key responsibilities Take part in projects that use AI to generate and improve written content Support the training of AI systems to better understand and apply journalistic standards Adapt to a range of topics and formats, adjusting your approach based on each project's needs Location This role is fully remote but requires residency in Israel.

Toloka AI seeks a Freelance English Writer - AI Trainer for a remote contract role based in Israel. This position centers on developing and refining written materials that support the training of AI language systems. Responsibilities Create and edit English-language content designed for AI training tasks Select and organize examples and prompts to help AI models better interpret natural human communication Review and improve AI-generated text to ensure it reads naturally and accurately Location This is a remote role. Candidates may work from home anywhere within Israel.

Please submit your CV in English and indicate your English proficiency level. Mindrift connects skilled specialists with project-based AI initiatives for leading tech companies. The focus is on testing, evaluating, and improving AI systems. This is a project-based freelance role, not a permanent position. What you will do Create original computational mathematics problems that reflect real mathematical research methods. Develop problems that require Python programming to solve, using libraries such as Numpy, SciPy, and Sympy. Ensure problems are computationally intensive and cannot be solved manually within days or weeks. Design challenges involving advanced reasoning in areas like number theory, combinatorics, graph theory, and numerical analysis. Base problems on genuine research questions or practical mathematical applications. Validate solutions in Python with established mathematical libraries. Document each problem clearly, providing both the statement and a verified solution. Requirements Degree in Mathematics (Pure or Applied) or a closely related field. Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or Stata, or knowledge of another programming language is also acceptable. At least 2 years of professional experience, which may include research, teaching, or applied work. Familiarity with numerical methods and symbolic computation. Ability to design problems that mirror authentic mathematical research workflows. Understanding of computational complexity theory. Strong written English skills at C1 level or higher. Application process The process includes: Apply → Complete qualifications → Join a project → Execute tasks → Receive payment. Project commitment During active phases, tasks are expected to require approximately 10–20 hours per week. This estimate depends on project needs and is not a guaranteed workload. Compensation Contributors may earn up to $35 per hour, depending on expertise and pace. Actual compensation varies by project scope, complexity, and required skills. Other projects on the platform may offer different earning potential based on their requirements.

Toloka AI is seeking a freelance specialist with strong expertise in biology and Python programming. This remote role, based in Israel, centers on supporting AI training efforts with hands-on subject matter knowledge. Role overview This position involves developing training materials that help improve artificial intelligence systems, with a focus on biological data. The work includes designing content, guiding AI models, and ensuring accurate interpretation of complex biological information. What you will do Create clear and effective training content for AI models in the biology domain Facilitate learning experiences that connect biological concepts with Python programming Guide AI systems to better understand and process biological data Requirements Expertise in biology Strong programming skills in Python Ability to explain biological concepts and coding techniques clearly

Please submit your CV in English and specify your English proficiency level. Mindrift connects professionals with project-based AI assignments for leading technology companies. The focus is on testing, evaluating, and improving AI systems. All positions are project-based and do not offer permanent employment. Role overview This freelance, remote position is open to candidates based in Israel. The role centers on supporting AI development by designing and validating advanced computational physics problems. Work is organized on a project basis. What you will do Create original computational physics problems that reflect real research methodologies Develop challenges that require Python programming to solve, using libraries such as Numpy, SciPy, or Sympy Design tasks that are computationally demanding and would take significant manual effort to solve Formulate problems involving complex reasoning in areas like mechanics, electromagnetism, thermodynamics, and quantum mechanics Base assignments on authentic research questions or practical applications in physics Verify solutions using Python and established physics simulation tools Document problem statements clearly and supply confirmed correct answers Requirements Degree in Physics (theoretical, experimental, or computational) or a related discipline Experience using Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is a plus At least 2 years of relevant experience in applied, research, or teaching roles Background in numerical simulation techniques Ability to design problems that mirror real-world research workflows Creative problem-solving skills across multiple physics domains Understanding of physics modeling and approximation methods Strong written English skills at C1 level or above Project workflow Apply Complete qualifications Join a project Carry out assigned tasks Receive payment Time commitment During active projects, expect to spend approximately 10–20 hours per week on tasks. Actual workload may vary based on project needs. Compensation Contributors can earn up to $35 per hour, depending on their contributions and pace. Rates vary by project according to the scope, complexity, and required expertise.

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 AI system testing and improvement. These freelance assignments are remote and based in Israel, and do not represent permanent employment. Role overview This freelance role centers on designing and validating advanced computational statistics challenges. The work involves creating original problems that reflect real mathematical research, often requiring Python programming and use of libraries such as Numpy, SciPy, or Sympy. Assignments emphasize computationally intensive tasks that go beyond manual calculation, and often draw from authentic research questions or practical scenarios in mathematics. What you will do Create computational statistics problems that mirror real research. Design challenges solvable with Python, using libraries like Numpy, SciPy, or Sympy. Develop problems requiring significant computation, not feasible to solve by hand. Write tasks involving advanced reasoning in number theory, combinatorics, graph theory, and numerical analysis. Base problems on genuine research or practical mathematical situations. Validate solutions in Python with standard mathematical libraries. Document problems clearly and provide verified answers. Requirements Degree in Statistics or a related discipline. Strong Python skills for numerical validation. Familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is a plus. At least 2 years of experience in applied, research, or teaching roles. Excellent written English at C1 level or above. Professional certifications (such as CMME, SAS Certifications, CAP) and experience with international or applied projects are advantageous. Project process Apply Complete qualifications Join a project Fulfill assigned tasks Receive compensation Time commitment During active project phases, tasks generally require 10 to 20 hours per week. Actual workload may vary and is not guaranteed, depending on project needs. Compensation Earnings can reach up to $39 per hour, depending on experience and work pace. Rates may vary across projects based on complexity and requirements. Other projects on the platform may offer different earning potential.

Role overview toloka-ai is looking for a Senior Consultant to join a freelance AI project. This remote position is open to candidates based in Israel. The role centers on working closely with major industry firms, using significant experience in both AI and consulting to guide projects and provide actionable insights. What you will do Collaborate directly with leading companies on projects focused on artificial intelligence Apply expertise to help design practical solutions and offer clear recommendations Draw on previous consulting experience with well-known organizations to inform project work Requirements Strong background in consulting and artificial intelligence Experience working with recognized companies Comfort with freelance, project-based assignments and remote collaboration

Mindrift seeks a Freelance Python Data Scraping Engineer to join the Tendem project. This is a remote, part-time contract role for candidates based in Israel. The position involves integrating advanced data scraping workflows into a hybrid system that combines AI with human input. Collaboration with Tendem Agents is central, as they manage repetitive tasks while the engineer ensures technical precision and data quality. Key responsibilities Extract structured data from complex websites, managing the full process from collection to delivery. Utilize internal tools such as Apify and OpenRouter, alongside custom workflows, to streamline data gathering, validation, and task management. Adapt scraping techniques for dynamic and interactive web sources, including sites with JavaScript-rendered content or frequent structural changes. Enforce data quality through validation checks, ensuring consistency across sources and compliance with formatting standards. Scale scraping operations for large datasets using batching or parallelization, monitor for failures, and maintain resilience to minor site updates. Requirements Minimum 3 years of experience in data engineering, web scraping, and automation. Compensation Contributors may earn up to $32 per hour, depending on expertise and pace. Actual rates vary by project, reflecting scope, complexity, and required skills. Application process Interested candidates should submit an application to qualify for freelance projects that align with their technical experience. The role offers flexible scheduling and the chance to contribute to projects involving coding, automation, and AI output refinement, supporting both AI development and practical uses.

Toloka AI, through its Mindrift platform, offers project-based freelance roles for experienced supply chain professionals. This remote position is open to candidates based in Israel and centers on supporting AI development for major technology companies. As a Freelance Supply Chain Consultant - AI Trainer, the work draws on practical procurement and supply chain knowledge to test, evaluate, and improve AI systems. What you will do Develop realistic supply chain disruption scenarios inspired by real manufacturing and procurement issues, such as supplier delays, quantity changes, logistics complications, and quality failures. Define clear expected outcomes and practical mitigation steps for each scenario. Assess AI-generated recommendations for accuracy and relevance to business operations. Review outputs to ensure they fit within ERP systems, including Microsoft Dynamics 365, Coupa, Jaggaer, and Ariba (SAP). Support the creation and validation of structured data following established guidelines. Requirements Minimum 4 years of experience in procurement, supply chain management, or purchasing, ideally within manufacturing. Solid grasp of procurement workflows, including purchase orders, vendor management, inventory control, and production planning. Hands-on experience with ERP systems such as SAP, Oracle, or Microsoft Dynamics 365. Demonstrated ability to design and analyze supply chain disruption scenarios and craft mitigation strategies. Understanding of disruption types: delays, shortages, quality issues, and logistics challenges. Familiarity with Incoterms and logistics management principles. Experience working with Bill of Materials (BOM) structures and production planning processes. Knowledge of supplier performance metrics, such as OTIF, lead times, and quality scores. Strong analytical skills to assess AI outputs against business logic. Background in data validation, structured data entry, or annotation work. Excellent written English communication skills. How the project works Apply Pass qualifications Join a project Complete assigned tasks Receive compensation Time commitment Tasks during active project phases typically require 10 to 20 hours per week. Actual workload may vary and is not guaranteed. Compensation Contributors can earn up to $50 per hour, depending on the specifics of each project.

Please submit your CV in English and indicate your level of English proficiency. toloka-ai, working with Mindrift, offers project-based freelance roles for professionals supporting AI development. This contract position centers on improving, evaluating, and testing AI systems. Note that this is not a permanent employment role, but a project-based contract. Role overview The Freelance Research Physicist - AI Systems Trainer helps shape AI capabilities by designing and evaluating complex physics challenges. Tasks span several areas of advanced physics and require both creativity and technical depth. Design original optical problems reflecting real-world research methods Develop computationally intensive challenges beyond manual calculation Create problems involving advanced reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics Base challenges on actual research questions or practical applications in optics and physics Document problem statements clearly and provide verified solutions Requirements Degree in Physics (theoretical, experimental, or computational) or a closely related field Minimum 2 years of experience in applied physics, research, or academic roles Proficiency with numerical simulation techniques Ability to design problems that mirror authentic research workflows Creative approach to problem design across multiple physics disciplines Familiarity with modeling and approximation methods in physics Excellent written English (C1 level or above) Project process The typical workflow includes: Apply, pass qualifications, join a project, complete assigned tasks, and receive compensation. Time commitment Plan for 10–20 hours per week during active project phases. Actual workload may shift based on project needs. Compensation Earnings can reach up to $35 per hour, depending on expertise and pace. Rates may vary by project, reflecting scope, complexity, and required skills. Some projects may offer different compensation.

Submit your CV in English and specify your English proficiency level. Mindrift offers project-based freelance roles for professionals interested in AI education. This remote position, open to candidates based in Israel, focuses on creating and validating computational chemistry problems for AI system evaluation. Engagements are project-based rather than permanent employment. What you will do Design computational chemistry problems that reflect real-world research workflows. Develop problem sets requiring Python programming for solutions, using libraries such as numpy, scipy, and chemistry-specific packages. Ensure problems are computation-intensive and not easily solvable by hand within a reasonable timeframe. Create tasks involving advanced reasoning in physical chemistry, quantum chemistry, and molecular modeling. Base scenarios on authentic research challenges or practical chemistry applications. Validate solutions in Python, applying established computational chemistry methods. Document problems clearly and provide accurate, verified 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 other relevant programming languages is also acceptable. At least 2 years of relevant experience (applied, research, or teaching). Familiarity with numerical methods in chemistry and computational chemistry concepts. Strong written English skills at C1 level or above. How projects work The process includes application, passing qualifications, joining a project, completing assigned tasks, and receiving payment. Time commitment During active project phases, expect approximately 10–20 hours of work per week, depending on project needs. Actual workload may vary. Compensation Earn up to $35 per hour, based on experience and contribution speed. Payment depends on project scope, complexity, and expertise required. Other projects on the platform may offer different rates.

Role overview Toloka AI seeks a Freelance Legal Consultant with strong expertise in US law. This remote contract position is based in Israel. The consultant will contribute legal knowledge to shape and improve how AI systems interpret and apply legal concepts, with an emphasis on compliance and accuracy. What you will do Apply legal experience and judgment to train AI systems Review and refine AI outputs to ensure alignment with US legal standards Collaborate with multidisciplinary teams to develop models that reflect practical legal requirements Support efforts to make technology solutions that address a broad range of client needs Collaboration This role requires regular interaction with cross-functional teams. Sharing legal insights will help guide technical choices and connect legal frameworks with AI development efforts.