Senior Data Engineer - AWS

Please submit your CV in English and specify your English proficiency level. Mindrift offers project-based contract roles for experienced data professionals. The company connects specialists with AI-focused projects at leading technology organizations. Most assignments involve testing, evaluating, or enhancing AI systems. This is not a permanent position but a contract engagement for specific projects. Role overview As a Freelance Data Science Engineer (Python & SQL), work centers on designing and validating complex data science problems. Projects span sectors such as telecom, finance, government, e-commerce, and healthcare. Tasks typically include: Creating computational problems that mirror real-world analytics workflows. Developing challenges requiring advanced Python programming, using libraries like Pandas, Numpy, Scipy, Sklearn, Statsmodels, Matplotlib, and Seaborn. Ensuring problems are computationally intensive and not solvable by hand in a short time. Building scenarios involving multi-step reasoning: data processing, statistical analysis, feature engineering, predictive modeling, and insight extraction. Formulating deterministic problems with reproducible results, minimizing randomness by using fixed seeds where needed. Basing problems on realistic business cases such as customer analytics, risk assessment, fraud detection, forecasting, optimization, and operational efficiency. Covering the full data science pipeline: data ingestion, cleaning, exploratory analysis, modeling, validation, and deployment considerations. Including big data processing situations that require scalable computational solutions. Validating solutions in Python with standard data science libraries and statistical techniques. Documenting each problem clearly, including business context and verified answers. Requirements Minimum 5 years of hands-on data science experience with measurable business results. Portfolio of completed projects or publications that demonstrate real-world problem-solving. Advanced Python skills for data science, especially with Pandas, Numpy, Scipy, Scikit-learn, and Statsmodels. Expertise in statistical analysis and machine learning, with deep understanding of algorithms and their applications. Advanced SQL proficiency for data manipulation and analysis. Familiarity with Generative AI (LLMs, RAG, prompt engineering, vector databases). Understanding of MLOps and model deployment processes. Experience with frameworks such as TensorFlow, PyTorch, and LangChain. Strong written English skills (C1 level or higher). How to join Apply with a CV and indicate English proficiency. Complete the qualification process. Join a project team. Work on assigned tasks. Receive compensation for completed work. This is a remote, project-based contract role. Location: Remote , Glasgow, Scotland, United Kingdom.

Please submit your CV in English and specify your English proficiency level. toloka-ai, in partnership with Mindrift, offers flexible project-based work for experienced Data Scientists who want to help shape AI systems. This freelance engagement is remote, with a base in Glasgow, Scotland, United Kingdom. Contributors work alongside leading technology companies to test, evaluate, and improve AI models. Role overview This role centers on designing and documenting data science challenges that mirror real-world analytical problems from industries such as telecom, finance, government, e-commerce, and healthcare. The work involves creating computationally intensive tasks that require Python solutions, using libraries like Pandas, Numpy, Scipy, Sklearn, Statsmodels, Matplotlib, and Seaborn. Each challenge should be deterministic, reproducible, and grounded in practical business scenarios. What you will do Design data science problems reflecting real-world business needs, such as customer analytics, risk assessment, fraud detection, forecasting, and optimization. Create tasks involving complex data processing, statistical analysis, feature engineering, predictive modeling, and insight generation. Develop computational challenges that cannot be solved manually in a reasonable timeframe. Cover the entire data science workflow: data ingestion, cleaning, exploratory analysis, modeling, validation, and deployment considerations. Include big data scenarios and scalable computational approaches. Validate solutions in Python using standard statistical techniques. Document each problem clearly, provide realistic business context, and supply verified solutions. Requirements Minimum 5 years of hands-on data science experience with demonstrable business impact. Portfolio of completed projects or publications showing real-world problem-solving. Expert Python programming skills for data science, including Pandas, Numpy, Scipy, Sklearn, and Statsmodels. Advanced knowledge of statistical analysis and machine learning algorithms. Strong SQL skills and experience with database operations. Experience with Generative AI technologies (LLMs, Retrieval-Augmented Generation, prompt engineering, vector databases). Familiarity with MLOps practices and workflows for model deployment. Knowledge of frameworks such as TensorFlow, PyTorch, and LangChain. Excellent written English at C1 level or higher. How to apply Submit your application and CV in English. Complete the required qualification steps. Join a project and carry out assigned tasks. Receive compensation upon task completion.

Mindrift is hiring a Senior Python Data Scraping Engineer for a freelance, remote role based in Glasgow, Scotland, United Kingdom. This position focuses on the Tendem project and involves guiding data extraction workflows as an AI Pilot. The work is part-time and designed for professionals with strong experience in web scraping, data extraction, and data processing. Role Overview This role centers on overseeing the full data extraction process from complex websites. The Senior Python Data Scraping Engineer will collaborate with Tendem Agents, who manage repetitive tasks, while taking responsibility for the technical direction and quality of data workflows. What You Will Do Manage end-to-end extraction of structured datasets from a range of complex web sources, ensuring accuracy and timely completion. Utilize internal tools such as Apify and OpenRouter, and apply custom strategies to improve efficiency in data collection and validation. Adjust scraping techniques for dynamic and JavaScript-heavy websites with varying structures. Conduct thorough validation to maintain high data quality, ensuring consistency and correct formatting across all sources. Scale data operations by batching or parallelizing tasks, monitor for failures, and respond to minor changes in website layouts. Compensation Freelance contributors on this project can earn up to $37 per hour, depending on experience and pace. Actual rates may vary based on project scope, complexity, and required expertise.

Please submit your CV in English and indicate your English proficiency level. Toloka AI, working through Mindrift, offers project-based roles for specialists in AI and computational physics. This freelance engagement centers on evaluating and improving AI systems for technology clients. The position is remote and not a permanent employment contract. Role overview The freelance optical engineer will design computational physics problems that reflect real research workflows. Projects require creating and validating Python-based challenges using libraries such as Numpy, SciPy, and Sympy. Problems should demand significant computational effort and advanced reasoning across multiple physics domains, including mechanics, electromagnetism, thermodynamics, and quantum mechanics. Each problem must be clearly documented, based on actual research or practical applications, and include verified solutions using established simulation libraries. What you will do Develop computationally intensive physics problems for AI evaluation. Create Python challenges using Numpy, SciPy, and Sympy. Ensure problems require advanced reasoning and cannot be solved manually. Draw from real research or practical physics applications. Validate solutions with Python and simulation libraries. Document problem statements and provide verified answers. Requirements Background in optical engineering with strong Python skills. Degree in Physics (theoretical, experimental, or computational) or a related field. Experience using Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, or SciPy is also valued. Minimum 2 years of professional experience, such as applied research or teaching. Knowledge of numerical simulation methods and modeling techniques. Ability to design problems based on real-world research. Creative problem-solving skills across multiple physics areas. Strong written English skills at C1 level or higher. How projects work Apply Meet qualifications Join a project Complete assigned tasks Receive payment Time commitment Project phases typically require 10–20 hours per week. Actual hours can vary depending on project needs and timelines. Compensation Earn up to $35 per hour, depending on your expertise and contributions. Rates may differ for other projects on the platform based on complexity and requirements.

Please submit your CV in English and include your English proficiency level. Mindrift connects experienced engineers with project-based AI initiatives for technology companies. These projects focus on testing, evaluating, and refining AI systems. This freelance, project-based position does not represent permanent employment. Role overview This freelance role centers on designing and validating computational engineering problems that mirror real-world workflows. The work is remote, with a focus on Glasgow, Scotland, United Kingdom, though candidates may contribute from any location. What you will do Create original engineering problems that reflect genuine engineering processes Develop challenges that require Python programming for calculations and simulations Design computationally intensive problems using numerical methods or iterative techniques Incorporate system design, optimization, and analysis tasks Base scenarios on research or real-life engineering applications Validate solutions with Python and standard engineering libraries Document problem statements clearly and provide verified solutions Key qualifications Degree in Mechanical Engineering or a closely related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is valued At least 2 years of professional experience in applied engineering, research, or teaching 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 experience with international or applied projects are considered a plus How projects work Apply Complete qualifications Join a project Carry out assigned tasks Receive payment Time commitment Most tasks require around 10–20 hours per week during active project phases. The actual workload will vary depending on project needs. Compensation Contributors may earn up to $36 per hour, depending on skill and contribution speed. Rates can differ by project based on complexity, scope, and required expertise.

Toloka AI seeks a freelance AI trainer with experience in civil engineering and Python. This contract position is fully remote and based in Glasgow, Scotland. Role overview This role centers on using civil engineering knowledge and Python programming skills to help train and refine AI models. The work supports AI projects aimed at improving efficiency in engineering tasks. Key responsibilities Use civil engineering expertise and Python programming to enhance AI model performance. Collaborate with a distributed team developing AI-driven solutions for project workflows. Offer technical input to support current and future AI initiatives within the team. Location This is a remote role based in Glasgow, Scotland, United Kingdom.

Please submit a CV in English and specify your English proficiency level. Mindrift matches professionals with project-based freelance AI roles for top technology companies. Work centers on testing, evaluating, and improving AI systems. These roles are not permanent employment but are structured around specific projects. Role overview This freelance position focuses on creating and validating engineering tasks for AI training. Projects change over time, and responsibilities may include: Designing computational engineering problems that reflect real-world workflows Developing programming assignments using Python for engineering calculations and simulations Building tasks involving significant computation, numerical methods, or iterative solutions Writing engineering problems centered on system design, optimization, or analysis Basing assignments on actual research challenges or practical engineering scenarios Validating solutions in Python with standard engineering libraries Documenting problem statements clearly and providing verified solutions Requirements Degree in Electrical Engineering or a related field Strong Python skills for numerical validation; familiarity 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 experience with international or applied projects are advantageous How projects work The process includes: Application, Qualification(s), Project Engagement, Task Completion, and Compensation. Time commitment Typical tasks require 10–20 hours per week during peak project periods. Actual workload may vary depending on project needs and is not guaranteed. Compensation Contributors can earn up to $36 per hour, based on experience and task completion rate. Rates may vary by project depending on complexity, scope, and required expertise. Location This is a remote freelance position. Candidates in Glasgow, Scotland, United Kingdom are encouraged to apply.

Mindrift offers project-based roles for chemistry professionals with strong Python skills. Work is remote and focuses on developing and validating computational chemistry problems for AI training. These are temporary assignments, not permanent positions. What you will do Create original computational chemistry problems that reflect real research workflows. Design problems that require Python solutions, using libraries such as NumPy, SciPy, and chemistry-specific packages. Ensure each problem is computationally intensive, beyond what could be solved manually within days or weeks. Develop scenarios needing complex reasoning in fields like physical chemistry, quantum chemistry, and molecular modeling. Base your work on actual research challenges or practical chemistry applications. Validate solutions in Python using established computational chemistry methods. Document each problem clearly and provide verified answers. 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 programming languages is also acceptable. At least 2 years of professional experience in applied, research, or educational settings. Familiarity with numerical methods and computational chemistry concepts. Strong written English skills at C1 level or higher. How to apply Submit your CV in English and specify your English proficiency. The process: apply, complete qualifications, join a project, execute tasks, and receive payment. Time commitment Expect to spend about 10–20 hours per week during active project phases. Actual workload may vary depending on project needs. Compensation Earn up to $35 per hour, depending on contribution and project complexity. Pay rates may vary for different projects on the platform.

Toloka AI seeks a Computer Science Specialist with advanced Python skills to contribute to AI projects on the Mindrift platform. This remote position is based in Glasgow, Scotland, United Kingdom. Role overview This role centers on developing new solutions for artificial intelligence initiatives. The specialist will play a direct part in advancing project goals and supporting technical progress on the Mindrift platform. Key responsibilities Apply strong Python programming skills to AI-focused projects Support the development and implementation of new solutions Work closely with the Mindrift platform team to drive progress Location This is a remote role. Candidates should be based in Glasgow, Scotland, United Kingdom.

Toloka AI is seeking a Freelance AI Trainer with a strong background in Biology and Python. This remote position is based in Glasgow, Scotland, and offers the chance to contribute to AI education projects from anywhere. Role overview This role centers on developing training materials and delivering online sessions focused on Biology and Python. The position involves working closely with teams to improve and expand Toloka AI's training programs. What you will do Create clear and engaging educational content in Biology and Python Lead online training sessions for learners Collaborate with team members to enhance program quality Location This is a remote freelance role open to candidates in Glasgow, Scotland, United Kingdom.

Please submit your CV in English and include your English proficiency level. Mindrift connects skilled specialists with project-based AI work for leading technology companies. The focus is on testing, evaluating, and improving AI systems. This is a project-based role, not a permanent job. Role overview This freelance, remote position supports AI projects from Glasgow, Scotland, or elsewhere in the UK. Assignments are project-based and do not constitute ongoing employment. What you will do Create original computational statistics problems that mirror real mathematical research workflows Design challenges that require Python solutions, using libraries such as Numpy, SciPy, and Sympy Ensure that tasks are computationally intensive and not easily solved by hand Develop problems involving advanced reasoning in number theory, combinatorics, graph theory, or numerical analysis Base assignments on real research or practical mathematical applications Validate solutions using Python and standard mathematical libraries Document problem statements clearly and provide verified solutions 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 valued At least 2 years of relevant experience in applied, research, or teaching roles Excellent written English (C1 level or higher) Professional certifications (such as CMME, SAS Certifications, CAP) and experience with international or applied projects are a plus How projects work Apply with your CV and English level Complete the required qualifications Join a project Work on assigned tasks Receive payment for completed work Time commitment During active project phases, expect to spend around 10–20 hours per week. Actual workload depends on project needs and is not guaranteed outside active assignments. Compensation Earn up to $43 per hour, depending on contribution and speed. Actual rates vary by project based on complexity, scope, and expertise required.

Toloka Annotators is hiring a Freelance AI Trainer - Data Annotation Specialist. This remote position is available to those based in Glasgow, Scotland, United Kingdom. The role centers on supporting AI model development by labeling data with precision and care. Key Responsibilities Annotate various datasets used for training and improving AI systems Maintain high standards of accuracy and consistency in all data labeling tasks Help enhance the quality and performance of AI applications by providing dependable annotations Location This is a fully remote opportunity for candidates residing in Glasgow, Scotland, United Kingdom.

Please submit your CV in English and indicate your level of English proficiency. Mindrift brings together subject-matter experts and project-based AI work for leading technology companies. Projects focus on testing, evaluating, and improving AI systems. This freelance arrangement is project-based and not a permanent employment contract. Role overview This freelance AI Trainer role centers on material science and engineering projects. Assignments vary and may involve: Developing original material engineering problems that mirror real-world workflows Designing problems that require Python programming for calculations and simulations Creating computationally intensive problems using numerical methods or iterative solutions Building scenarios for system design, optimization, and analysis Formulating problems based on current research or practical engineering cases Validating solutions with Python and standard engineering libraries Clearly documenting problem statements and providing verified answers Requirements Degree in Material Science 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 Minimum 2 years of relevant professional experience (applied, research, or teaching) Understanding of practical engineering constraints and approximations Strong written English skills at C1 level or higher How to join Apply Complete qualification steps Join a project Finish assigned tasks Receive compensation Project commitment During active project phases, expect to spend about 10–20 hours per week on assigned work. Actual workload depends on project needs and is not guaranteed outside of active phases. Compensation Contributors can earn up to $35 per hour, depending on expertise and pace. Compensation may vary between projects based on their scope and complexity. This is a remote role. Candidates located in Glasgow, Scotland, United Kingdom are welcome to apply.

Toloka-AI is looking for a Freelance Machine Learning Engineer to work remotely from Glasgow, Scotland, United Kingdom. This contract position centers on building and improving machine learning solutions for a variety of AI projects. Key responsibilities Create scalable machine learning algorithms for practical use cases Refine and optimize existing models to boost their performance Collaborate with specialists across disciplines to address technical problems Support projects that expand AI capabilities at Toloka-AI Team environment Work alongside a group of experienced professionals in a fully remote setup. The team values technical expertise, curiosity, and a collaborative approach to solving complex challenges.

Please submit your CV in English and include your English proficiency level. This freelance, project-based role with toloka-ai (via Mindrift) focuses on evaluating AI coding agents for leading technology companies. The position is remote, open to candidates based in Glasgow, Scotland, United Kingdom. Role overview The Freelance AI Evaluation Engineer will contribute to building a dataset that measures how well AI models perform realistic developer tasks. The work includes designing technical challenges, setting up evaluation frameworks, and operating within simulated development environments. Main responsibilities Create virtual companies based on high-level plans, building out codebases, infrastructure, and realistic context such as documentation, tickets, and team conversations. Develop and calibrate tasks reflecting various stages of a virtual company’s lifecycle: write prompts, define evaluation methods, and ensure tasks are fair and solvable. Design challenges in isolated environments that mirror a developer’s daily setup, including a Linux machine with development tools, MCP servers (repository, task tracker, messenger, documentation), and a working web application codebase. Write tests that reliably accept all valid solutions and reject incorrect ones, balancing strictness and flexibility to avoid false positives or negatives. Work with AI agents to confirm that tests detect real issues, do not overlook flawed solutions, and do not fail on correct answers. Review AI-generated code, analyze results, and design edge cases or adversarial scenarios to identify model weaknesses. Refine tasks and evaluation criteria in response to expert QA feedback to meet quality standards. What this role does not involve No data labeling. No prompt engineering. No writing code from scratch; the AI agent generates most of the code, while your focus is on guidance and evaluation. This project requires close collaboration with AI systems. The main challenge is to design tasks that push advanced models, using creativity and technical insight, without relying on those same models to generate the tasks themselves.

Please submit your CV in English and indicate your level of English proficiency. toloka-ai, in partnership with Mindrift, offers freelance, project-based roles focused on advancing AI systems. This opportunity is structured around temporary assignments, not permanent employment. Each project aims to test, evaluate, and improve AI capabilities through the expertise of skilled professionals. Role overview The Optical Engineer – Freelance AI Trainer works on assignments that draw on deep knowledge of optics and physics. Project tasks can include: Creating original optics problems that reflect real-world research workflows in physics Designing computationally intensive challenges that cannot be solved manually in a short time Developing problems requiring advanced reasoning across areas such as mechanics, electromagnetism, thermodynamics, and quantum mechanics Basing assignments on authentic research scenarios or practical applications in optics and physics Documenting problem statements clearly and providing verified, accurate solutions Requirements Degree in Physics (theoretical, experimental, or computational) or a related field Minimum of 2 years’ experience in applied, research, or teaching roles Experience with numerical simulation methods Ability to create problems that mirror real-world physics research Creative problem-solving skills across multiple physics disciplines Familiarity with modeling and approximation techniques in physics Excellent written English skills at C1 level or above This freelance role is ideal for optical engineers seeking flexible, part-time assignments without a long-term commitment. Project commitment During active project periods, tasks typically require 10–20 hours per week. Actual workload may change depending on project availability. Compensation Contributors can earn up to $35 per hour, based on skill, pace, and project requirements. Compensation depends on the scope, complexity, and expertise needed for each assignment. Application process Apply Meet qualifications Join a project Complete assigned tasks Receive compensation Location: Remote , Glasgow, Scotland, United Kingdom

Role overview Turner Townsend is hiring a Senior Planning Engineer to support project delivery in the pharmaceutical and biotechnology sectors. The role centers on planning, execution, and management of complex engineering projects, with careful attention to compliance standards in the life sciences industry. What you will do Create and maintain detailed project schedules for engineering work in life sciences. Allocate resources to align with project needs and timelines. Identify project risks and recommend mitigation steps. Collaborate with cross-functional teams to achieve project milestones. Location This position is based in Glasgow.

Mindrift is looking for a Freelance AI Workflow Engineer (AI Pilot) to join the Tendem project. This remote, part-time contract focuses on building and refining intelligent automation systems that combine large language models (LLMs) with human oversight. The position is open to candidates based in Glasgow, Scotland, or working remotely from the United Kingdom. Project: Tendem The Tendem project (https://tendem.ai/) develops hybrid automation solutions where LLMs and human agents collaborate. The goal: create scalable, dependable workflows that automate content generation, enrichment, and communication tasks. What you will do Design and evaluate workflows that integrate with LLM APIs, including OpenAI, Claude, Gemini, or similar platforms. Develop and improve AI-powered automation systems for tasks such as content creation, enrichment, and communication. Create and refine prompt frameworks to ensure consistent, high-quality results. Set up automated, personalized outreach systems for email, messaging, and lead enrichment. Structure and preprocess data to maintain stable model performance and reliable outputs. Analyze and optimize AI-driven pipelines for scalability, efficiency, and accuracy. Role overview This role calls for hands-on experience with LLM integrations, prompt engineering, and automation systems. Collaboration with Tendem Agents is central, as is applying structured thinking and quality control to workflow development. The position suits professionals comfortable working independently in a remote setting, focused on delivering robust AI solutions.

Please submit your CV in English and include your English proficiency level. This is a freelance, project-based position with Toloka AI, delivered through Mindrift. The work centers on testing, evaluating, and improving AI systems for leading technology companies. This role is not a permanent placement, but offers flexibility and remote collaboration from Glasgow or elsewhere in the United Kingdom. Role overview The Senior Python Developer - Code Migration Specialist will focus on functional testing, code migration, and advanced development workflows. Key tasks include working with large codebases, setting up Docker environments, and applying large language models (LLMs) such as Roo Code and Claude Code to automate and accelerate development. The role also involves reading and interpreting code in C, Rust, and Go, and translating migration requirements into actionable solutions. What you will do Design and implement black box functional tests for extensive codebases in various source languages. Set up, manage, and troubleshoot Docker environments for reproducible builds and consistent test execution across platforms. Track code coverage and automate scoring to ensure benchmarks are met. Utilize LLMs (Roo Code, Claude) to streamline development, automate repetitive processes, and enhance code quality. Requirements Minimum 5 years of experience as a Software Engineer, specializing in Python. Expertise with pytest, including fixtures, session-scoped tests, and timeouts, as well as black-box functional testing for CLI tools. Advanced Docker skills: writing reproducible Dockerfiles, managing user contexts, and setting up secure workspaces. Strong Linux and Bash scripting abilities, particularly for debugging within containers. Familiarity with modern Python tooling (uv, pyproject.toml, packaging). Ability to read and work with code in C, C++, Rust, and Go using LLMs. Hands-on experience with LLMs (Claude Code, Roo Code, Cursor) for iterative development and test generation. English proficiency at B2 level or higher. Preferred qualifications Experience with agent evaluation platforms and MCP CLI. Tools and technologies Python (pytest, uv, Pillow), Docker, Bash, Git Submodules, C/C++/Rust/Go (reading), Dagger, GitHub Codespaces, LLMs (Claude Code, Roo Code, Cursor), coverage.py, gcov, kcov. Benefits and work arrangement Freelance, project-based work through Mindrift in partnership with Toloka AI. Fully remote with flexible scheduling; typical workload is 20-30 hours per week. Compensation varies by project and experience. For this project, AI trainers can earn up to $50 per hour.