Freelance Data Science Engineer (Python & SQL) - Remote Opportunity

Please submit your CV in English and specify your proficiency level. Mindrift connects experienced professionals with project-based AI work for leading technology companies. Assignments focus on testing, evaluating, and improving AI systems. All work is freelance and project-based, not permanent employment. Role overview This freelance position is open to Electrical Engineers with strong Python skills, working remotely from Queensland, Australia. Contributors join AI projects, each with unique requirements and timelines. Work is flexible and organized by project phase. What you will do Design computational engineering problems that reflect real-world engineering workflows Create challenges that require Python programming for engineering calculations and simulations Develop problems involving computationally intensive tasks, including numerical methods or iterative solutions Build scenarios focused on system design, optimization, and analysis Base assignments on actual research challenges or practical engineering applications Validate solutions using Python and standard engineering libraries Write clear problem statements and provide verified solutions Requirements Degree in Electrical Engineering or a related field Strong Python skills for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar libraries is valued At least 2 years of experience in applied, research, or teaching roles Understanding of practical engineering constraints and approximations Advanced written English (C1+ level) Professional certifications (such as CMME, SAS Certifications, CAP) and experience with international or applied projects are a plus Project commitment Active project phases usually require 10–20 hours per week. Actual workload depends on project needs and timelines. Compensation Contributors can earn up to $39 per hour, depending on contribution and speed. Rates vary by project based on complexity, scope, and expertise required. Other projects on the platform may offer different compensation depending on their requirements. How to apply Submit your application Pass the qualification process Join a project Complete assigned tasks Receive payment This is a freelance, project-based position. Permanent employment is not offered for this role.

Please submit your CV in English and highlight your English proficiency. Mindrift connects specialists with project-based AI work for leading technology companies. Most assignments involve testing, evaluating, and improving AI systems. This is a freelance, project-based position rather than a permanent role. Role overview As an Optical Engineer with Python expertise, work on designing and validating advanced computational physics problems. These problems are used to simulate research workflows and assess AI performance in physics-related areas. What you will do Design computational physics problems that reflect real research scenarios. Create Python-based problems using libraries such as Numpy, SciPy, or Sympy. Develop problems that are computationally intensive and not solvable manually within days or weeks. Build scenarios requiring complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics. Base scenarios on actual research challenges or practical applications from the field. Validate solutions using Python and standard physics simulation libraries. Document problem statements clearly and provide accurate, verified solutions. 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, SciPy, or similar libraries is beneficial. At least 2 years of professional experience in applied research or teaching. Background in numerical simulation methods. Ability to design problems that reflect real-world research processes in physics. Creative problem-solving skills across several physics domains. Familiarity with physics modeling and approximation techniques. Strong written English skills at C1 level or higher. Project process Application Qualification assessment Project participation Task completion Compensation Time commitment Tasks usually require about 10–20 hours per week during active project phases. Workload may vary depending on project needs and is not guaranteed. Compensation Earn up to $45 per hour, depending on expertise and contribution. Compensation may differ by project based on scope and complexity. Location This freelance role is remote and open to candidates based in Queensland, Australia.

Toloka AI seeks a Mechanical Engineer with strong Python programming skills for a freelance, remote role based in Queensland, Australia. This contract position focuses on training and content development at the intersection of mechanical engineering and artificial intelligence. Responsibilities Design and develop training modules that highlight AI applications in mechanical engineering Create educational materials tailored for engineers, ensuring clarity and engagement Lead training sessions for learners interested in combining AI with mechanical systems Collaborate with the engineering team to maintain the accuracy and relevance of all content Requirements Background in mechanical engineering Strong proficiency in Python Experience with teaching, mentoring, or creating technical educational content Interest in artificial intelligence and its applications within engineering Location This freelance position is remote and open to candidates based in Queensland, Australia.

Mindrift brings together skilled professionals and AI-focused projects from leading technology companies. The platform emphasizes collaboration between human expertise and AI, supporting the advancement of Generative AI through global talent. Role overview This part-time, freelance role focuses on data scraping for the Tendem project. The position is fully remote and based in Queensland, Australia. As an AI Pilot, collaboration with Tendem Agents will be central to delivering precise and dependable data extraction and processing. What you will do Manage the entire data extraction process from complex websites, producing structured datasets within deadlines. Work with internal tools such as Apify and OpenRouter, as well as custom workflows, to enhance data collection and validation. Adapt extraction methods to handle dynamic web content and respond to evolving site structures. Conduct validation checks and systematic reviews to ensure high data quality before delivery. Streamline scraping operations for large datasets by batching tasks and monitoring for consistent performance as websites change. Compensation Earnings may reach up to $32 per hour, depending on experience and the pace of contributions. Actual rates can vary with the scope and complexity of assigned projects.

Toloka AI seeks a Freelance Civil Engineer and Python Specialist for contract work on AI training projects. This remote position is open to candidates located in Queensland, Australia. The role brings together civil engineering experience and Python programming to support the development and improvement of AI training solutions. Responsibilities Use civil engineering knowledge to contribute to AI training initiatives Write and refine Python code to build, validate, or improve AI training data and workflows Work with Toloka AI teams to achieve reliable, high-quality project outcomes Location This is a remote contract role for candidates based in Queensland, Australia.

Toloka AI is looking for a Freelance AI Trainer with a strong background in biology and Python. This remote position is based in Queensland, Australia and centers on advancing AI in the biological sciences. Role overview This role involves developing and refining AI models by applying expertise in both biology and programming. The work supports new advances in how AI is used within biological research and applications. What you will do Collaborate with a diverse team to design and improve training materials Participate in model training sessions, using knowledge of biology and Python to guide AI development Work environment This freelance position offers the flexibility of remote work and the chance to contribute meaningfully to the AI community, particularly at the intersection of technology and biological science.

Please submit your CV in English and indicate your level of English proficiency. Mindrift partners with skilled professionals for project-based AI work serving leading technology companies. This freelance contract centers on evaluating and improving AI systems within engineering environments. The position is contract-only and does not transition to permanent employment. Role overview This freelance Material Scientist with Python expertise will design original materials that reflect real-world engineering processes and challenges. Assignments focus on engineering scenarios, research questions, and practical problem-solving using computational tools. What you will do Create problems that require Python programming for engineering calculations or simulations. Develop computationally intensive challenges using numerical methods or iterative solutions. Formulate tasks involving system design, optimization, and analysis. Ensure assignments are grounded in genuine research or practical engineering situations. Validate solutions using Python and standard engineering libraries. Write clear, precise problem statements and provide accurate, verified solutions. Requirements Background as a material scientist or engineer with strong Python skills. 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 libraries is valued. Minimum of 2 years of professional experience in industry, research, or teaching. Solid understanding of practical engineering constraints and approximations. Excellent written English at C1 level or above. How to join Apply Meet the qualifications Join a project Complete assigned tasks Receive compensation Project commitment During active project phases, expect to spend 10-20 hours per week on assigned tasks. Workload may vary and is not guaranteed outside of active project periods. Compensation Earn up to $35 per hour, depending on contribution and pace. Actual rates may differ by project, based on complexity, scope, and expertise required. Other projects on the platform may offer different compensation structures.

Please submit your CV in English and indicate your level of English proficiency. Mindrift offers project-based, remote roles for professionals skilled in chemistry and Python. These freelance positions focus on supporting AI development for leading technology companies. Participation is not permanent employment, and work is assigned on a project basis. What you will do Design computational chemistry problems that reflect real-world research workflows. Create Python-based challenges requiring programming solutions, often using numpy, scipy, and chemistry-specific libraries. Ensure problems are complex enough to require computational methods, not manual solutions. Develop tasks involving advanced reasoning in physical chemistry, quantum chemistry, and molecular modeling. Base assignments on authentic research scenarios or practical chemistry applications. Validate solutions using Python and established computational chemistry techniques. Document each problem clearly and provide verified answers. 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 relevant chemistry libraries is also acceptable. At least 2 years of professional experience in applied research, teaching, or a related area. Background in numerical methods within chemistry. Knowledge of computational chemistry concepts and techniques. Strong written English skills (C1 level or higher). How projects work The process includes application, qualification, joining a project, completing assigned tasks, and receiving payment. During active project phases, tasks typically require 10–20 hours per week, though actual workload may vary. Compensation Contributors can earn up to $35 per hour, depending on expertise and pace. Compensation may differ by project based on scope, complexity, and required skills. Other projects may offer different pay structures.

Please submit your CV in English and indicate your English proficiency level. toloka-ai, together with Mindrift, offers project-based contract work for optical engineers who want to support AI training projects. This remote role is open to candidates based in Queensland, Australia. Engagements are tied to specific projects and do not constitute permanent employment. Role overview This freelance position centers on designing and documenting advanced optics problems for AI training. The work draws on authentic research scenarios and practical applications in physics. Assignments are project-specific and require both subject expertise and strong written communication. What you will do Develop original optics problems that reflect real-world physics research workflows Create problems that require computational approaches and cannot be solved manually in a short period Design challenges involving complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics Base problems on genuine research situations or practical optics applications Document each problem thoroughly 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, including applied, research, or teaching roles Experience with numerical simulation techniques Ability to design realistic, complex problems that mirror actual research workflows Creative problem-solving skills across multiple physics domains Familiarity with physics modeling and approximation methods Strong written English skills at C1 level or higher How the process works Apply Pass qualifications Join a project Complete assigned tasks Receive compensation Time commitment During active project phases, expect to spend about 10–20 hours per week on assigned tasks. Workload may fluctuate depending on project needs and is not guaranteed outside of live project periods. Compensation Contributors may earn up to $35 per hour, depending on contribution level and pace. Actual rates will vary with project complexity, scope, and required expertise. Other projects on the platform may offer different compensation based on their specific needs.

Please submit your CV in English and specify your English proficiency level. Toloka AI, working with Mindrift, seeks a freelance AI Trainer specializing in physics and Python. This contract role is remote and project-based, supporting the evaluation and development of AI systems for large technology partners. The position is not permanent and is based in Queensland, Australia (remote). What you will do Create original computational physics problems that reflect authentic research workflows. Design tasks requiring Python programming, using libraries such as Numpy, SciPy, and Sympy. Ensure problems are computationally demanding and not solvable manually in a short period. Develop challenges across mechanics, electromagnetism, thermodynamics, and quantum mechanics, focusing on advanced reasoning. Base tasks on real research questions or practical physics applications. Validate solutions using Python and standard simulation libraries. Document problem statements clearly and provide verified solutions. Requirements Degree in physics (theoretical, experimental, or computational) or a closely related field. Proficiency in Python for numerical validation. Experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, Stata, or similar tools is a plus. At least two years in applied, research, or teaching roles. Background in numerical simulation methods. Ability to design problems that mirror real physics research workflows. Creative approach to formulating problems across physics domains. Familiarity with modeling and approximation techniques in physics. Strong written English skills (C1 level or above). Project structure The process includes application, qualification, project engagement, task completion, and then compensation. Time commitment During active project phases, expect to dedicate around 10–20 hours per week. Actual workload may vary depending on project needs and is not guaranteed. Compensation Contributors may earn up to $35 per hour, depending on contribution level and task completion speed. Rates can vary by project based on complexity and required expertise. Other projects on the platform may offer different compensation structures.

Please submit your CV in English and specify your English proficiency level. Mindrift offers project-based freelance roles for mathematicians and Python specialists. Work remotely on AI projects for leading technology firms, focusing on testing, evaluating, and improving AI systems. All engagements are project-based and not permanent positions. What you will do Create original computational mathematics problems that mirror real mathematical research workflows Design challenges requiring Python programming solutions, often using libraries like Numpy, SciPy, and Sympy Develop problems that are computationally intensive and may take days or weeks to solve Craft problems involving complex reasoning in areas such as number theory, combinatorics, graph theory, and numerical analysis Base problems on real-world research questions or practical mathematical applications Validate solutions using Python and standard mathematical libraries Document problem statements clearly and provide verified solutions 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 languages is also considered At least 2 years of professional experience in applied mathematics, research, or teaching Familiarity with numerical methods and symbolic computation Ability to design problems reflecting authentic mathematical research processes Knowledge of computational complexity theory Excellent written English skills (C1+ level) Project workflow Application Qualification Assessment Project Assignment Task Completion Compensation Time commitment During active projects, tasks typically require 10–20 hours per week, depending on project needs. This is an estimate and not a guaranteed workload. Compensation Earn up to $35 per hour, depending on expertise and contribution speed. Actual rates vary by project scope, complexity, and required skills. Other projects on the platform may offer different compensation levels.

Please submit your CV in English and include your English proficiency level. This project-based contract with toloka-ai connects engineers to AI evaluation work for leading technology companies. The focus is on testing, assessment, and improvement of AI systems. This is not a permanent position. Role overview The Freelance AI Evaluation Engineer builds realistic virtual companies, complete with codebases, infrastructure, and supporting context such as documentation, conversations, and tickets. These environments simulate authentic development settings for AI systems to operate within. What you will do Design simulated companies based on strategic plans, including the creation of codebases and infrastructure. Develop and refine tasks within these environments, setting clear prompts and evaluation metrics to ensure tasks are solvable and fairly assessed. Set up isolated developer workstations, configuring Linux machines with development tools, repositories, task trackers, messaging platforms, and real web application codebases. Create tests that accurately accept all valid solutions and reject incorrect ones, maintaining a careful balance to avoid blocking correct approaches or allowing flawed ones. Iterate with AI agents during testing, ensuring they identify real issues, avoid missing mistakes, and do not incorrectly flag correct solutions. Review AI-generated code, analyze agent performance, and design edge cases and adversarial scenarios to strengthen evaluation processes. Incorporate feedback from expert QA reviewers, refining deliverables to meet quality standards. What this role does not include Data labeling Prompt engineering Writing code from scratch (the AI agent handles most code generation; your focus is on guidance and evaluation) This role centers on collaborating with advanced AI systems. Much of the work involves designing and refining tasks that challenge these models, requiring close interaction with AI agents throughout the process.

Please submit your CV in English and include your English proficiency level. Role overview toloka-ai, working with Mindrift, offers freelance project-based assignments for specialists in statistics and Python. This is not a permanent position. Projects connect contributors with AI initiatives for leading technology clients. What you will do Develop original computational statistics problems that mirror real research methods. Create challenges solvable with Python, using libraries such as Numpy, SciPy, and Sympy. Design problems that are computationally demanding, often requiring significant time to solve manually. Formulate tasks involving advanced reasoning in number theory, combinatorics, graph theory, and numerical analysis. Base assignments on authentic research questions or practical mathematical scenarios. Validate solutions in Python using standard mathematical libraries. Document each problem clearly and supply accurate, verified answers. Requirements Degree in Statistics or a closely related discipline. Proficiency in Python for numerical validation. Familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar libraries is valued. At least 2 years of relevant experience in applied, research, or teaching roles. Strong written English skills at C1 level or above. Professional certifications (such as CMME, SAS Certifications, CAP) and experience with international or applied projects are considered an advantage. Project process The workflow includes: Application, Qualification Assessment, Project Participation, Task Completion, and Compensation. Time commitment During active project phases, expect to contribute roughly 10–20 hours per week. Actual hours depend on project needs and are not guaranteed outside of active assignments. Compensation Earn up to $38 per hour. Actual rates depend on project complexity, required expertise, and individual contributions. Pay may vary between assignments. Location This is a remote position based in Queensland, Australia.

Toloka-AI seeks a Computer Science Specialist with advanced Python skills to contribute to AI projects for the Mindrift platform. This remote role is open to candidates based in Queensland, Australia. Key responsibilities Use Python to develop and enhance AI technologies for the Mindrift platform. Work closely with team members to strengthen platform features and performance. Support improvements to user experience through technical input and solutions. Location This position is fully remote and based in Queensland, Australia.

Please submit your CV in English and specify your English proficiency level. Mindrift connects experienced professionals to project-based AI work with leading technology companies. Assignments focus on testing, evaluating, and improving AI systems. This is a contract role, not a permanent position. Role overview This freelance AI Trainer position is designed for research physicists with strong Python skills. Contributors create and validate advanced computational physics problems that help refine AI capabilities. All work is remote and project-based, with assignments varying by project. What you will do Design original computational physics problems that reflect real research workflows. Create challenges that require Python programming to solve, using libraries like Numpy, SciPy, and Sympy. Ensure problems are computationally intensive and not solvable manually in a reasonable timeframe. Develop problems involving complex reasoning in mechanics, electromagnetism, thermodynamics, or quantum mechanics. Base challenges on authentic research questions or practical applications in physics. Validate solutions using Python and standard physics simulation libraries. Document clear problem statements and provide verified solutions. Requirements Degree in Physics (theoretical, experimental, or computational) or a closely related field. Proficiency in Python for numerical validation. Experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, Stata, or similar languages is a plus. At least 2 years of professional experience in applied physics, research, or teaching. Expertise in numerical simulation techniques. Ability to design problems that reflect real research workflows in physics. Creative problem-solving across multiple physics domains. Familiarity with physics modeling and approximation methods. Strong written English at C1 level or above. Application steps Apply Pass qualifications Join a project Complete assigned tasks Receive compensation Time commitment During active project phases, tasks typically require 10–20 hours per week. Actual hours may vary depending on project needs. There is no guaranteed minimum workload. Compensation Contributors can earn up to $35 per hour, depending on contribution level and speed. Rates may differ between projects based on scope, complexity, and required expertise. Other Mindrift projects may offer different compensation levels. Location: Remote , Queensland, Australia

Please submit your CV in English and indicate your level of English proficiency. Mindrift connects experienced specialists to project-based AI work for leading technology companies. Projects focus on testing, evaluating, and improving AI systems. All positions are freelance and do not offer permanent employment. Role overview This freelance role is designed for quantum research scientists with strong Python skills who want flexible, part-time work. Project tasks vary but often include creating and validating computational physics problems that reflect real research scenarios. Design original computational physics problems based on actual research workflows Develop problems requiring Python solutions, using libraries such as Numpy, SciPy, and Sympy Create computationally intensive problems that cannot be solved manually within a reasonable time Formulate problems involving complex reasoning across mechanics, electromagnetism, thermodynamics, and quantum mechanics Base problems on real research challenges or practical applications in physics Validate solutions in Python with standard physics simulation libraries Document problem statements clearly and provide accurate, verified answers Requirements Degree in Physics (theoretical, experimental, or computational) or a closely related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, or SciPy is valued At least 2 years of professional experience in applied research, teaching, or similar roles Background in numerical simulation techniques Ability to design problems that mirror real physics research workflows Creative approach to problem-solving across multiple physics domains Knowledge of physics modeling and approximation methods Strong written English skills at C1 level or above How to apply Submit your application Complete the required qualifications Join a project Finish assigned tasks Receive payment Time commitment Project tasks typically require 10–20 hours per week during active phases. Actual workload may vary depending on project needs and is not guaranteed. Compensation Earn up to $35 per hour, depending on expertise and pace. Compensation may differ by project based on complexity, scope, and required skills. Location: Remote , Queensland, Australia

toloka-ai seeks a Senior Consultant for a freelance AI project. This remote position is open to candidates based in Queensland, Australia. The role centers on supporting strategic initiatives and contributing insights that help shape the company’s AI solutions. Role overview This position calls for a consultant with experience at MBB (McKinsey, BCG, Bain) or other leading consulting firms. The focus is on advising AI projects and influencing their direction through strategic guidance. Key responsibilities Advise on major strategic decisions for AI initiatives Apply consulting expertise to guide project direction Offer actionable insights to develop AI offerings Requirements Background at MBB or another top-tier consulting firm Strong experience in strategic consulting Comfort working independently as a freelancer

Please submit your CV in English and include a self-assessment of your English proficiency. Mindrift, in partnership with toloka-ai, offers freelance, project-based work for experienced data scientists. This role supports technology companies as they test, evaluate, and improve AI systems. Engagements are project-specific and do not represent permanent employment. Key responsibilities Create original data science challenges that mirror real-world analytical workflows in sectors like telecommunications, finance, government, e-commerce, and healthcare. Develop problems requiring advanced Python programming with libraries such as Pandas, Numpy, Scipy, Sklearn, Statsmodels, Matplotlib, and Seaborn. Design computationally intensive tasks that cannot be solved manually within a reasonable timeframe. Build scenarios involving complex reasoning in data processing, statistical analysis, feature engineering, predictive modeling, and deriving actionable insights. Ensure all problems are deterministic and reproducible by avoiding stochastic elements or by setting fixed random seeds. Base challenges on real business use cases, including customer analytics, risk assessment, fraud detection, forecasting, optimization, and operational efficiency. Develop end-to-end problems that span the full data science pipeline: data ingestion, cleaning, exploratory data analysis, modeling, validation, and deployment considerations. Include big data processing scenarios that need scalable computational approaches. Validate solutions in Python using standard data science libraries and statistical methods. Document each problem with a clear business context and provide verified correct answers. Location This is a remote freelance role based in Queensland, Australia.

Join our dynamic engineering team at Freelancer, where we are actively seeking skilled Senior Software Engineers to elevate our innovative environment.We offer an unparalleled opportunity for high achievers looking to break away from the mundane corporate grind. If you possess exceptional talent and seek to collaborate with some of the brightest minds in the industry, this position is tailored for you.At Freelancer, you won’t be just another number in a mega-cap technology firm; instead, you will face a diverse array of internet-scale challenges that will allow you to make a tangible impact. Our meritocratic culture ensures that hard work is recognized and rewarded, allowing you to rapidly advance your skills.Our mission is to create one billion job opportunities globally, making a real difference in the lives of people everywhere. You will have the chance to engage with a multitude of engineering challenges, utilizing a variety of cutting-edge technologies across our platform. Freelancer.com is among the top 1000 websites globally, featuring a state-of-the-art frontend stack with Angular, TypeScript, and RxJS, while our robust backend supports a modern global marketplace.As a Senior Software Engineer, you will take the lead in making architectural decisions and ensuring engineering excellence within your team, overseeing complex projects from inception to completion.