Senior Python Developer - Code Migration Expert

Please submit your CV in English and indicate your English proficiency level. Toloka AI, through Mindrift, connects specialists with project-based AI work for leading technology companies. This Senior Python Developer - Code Migration Expert position is tied to a specific project and is not a permanent role. Role overview This position calls for a Senior Python Developer with strong functional testing experience, advanced Linux and Docker skills, and the ability to interpret code in languages like C, Rust, and Go. Large language models (LLMs) such as Roo Code and Claude Code play a key role in the workflow, helping translate migration requirements and accelerate development cycles. What you will do Develop functional black box tests for sizable codebases in multiple languages. Set up and maintain Docker environments to ensure builds are reproducible and tests run consistently across platforms. Analyze code coverage and define automated scoring criteria that align with industry standards. Use LLMs (including Roo Code and Claude) to automate repetitive tasks, speed up development, and improve code quality. Requirements 5+ years as a Software Engineer focused on Python. Deep knowledge of pytest (fixtures, session-scoped tests, timeouts) and experience building black-box functional tests for CLI tools. Advanced skills with Docker: writing reproducible Dockerfiles, managing user contexts, and maintaining secure environments. Strong Linux and Bash scripting skills, including debugging within containers. Familiarity with modern Python tooling (uv, pyproject.toml, packaging). Ability to read and understand code in C, C++, Rust, or Go, supported by LLMs. Hands-on experience using LLMs (Claude Code, Roo Code, Cursor) for iterative development and test generation. English proficiency at B2 level or higher. Preferred 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 structure Freelance, project-based engagement via Mindrift (powered by Toloka AI). Fully remote with flexible scheduling: set your own hours and contribution (20-30 hours per week). Compensation varies by project scope and expertise. For this role, AI trainers can earn up to $50 per hour.

Join our innovative team at everience as a Kubernetes Expert / Cloud Architect specializing in migration projects. In this full-time role, you will leverage your expertise in Kubernetes to design, implement, and manage cloud-based solutions. Collaborate with cross-functional teams to ensure seamless migrations and optimize cloud infrastructure for performance and reliability. If you are passionate about cloud technologies and looking for an opportunity to make a significant impact, we want to hear from you!

Join Sopra Steria as a Scientific Code Development Engineer specializing in Structural Mechanics in the vibrant city of Lyon. In this full-time role, you will contribute to the design and implementation of innovative computational codes that address complex engineering challenges. This position is ideal for recent graduates eager to apply their knowledge in a practical setting, while collaborating with a dynamic team of professionals dedicated to excellence in engineering.

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.

Please submit your CV in English and indicate your English proficiency level. Mindrift offers project-based roles for professionals in artificial intelligence, with an emphasis on testing, evaluating, and refining AI systems for major technology companies. This collaboration is not a permanent position but is structured around specific projects. Role overview The Freelance AI Trainer (Statistics & Python) works on diverse projects, each presenting unique challenges. Responsibilities focus on designing and validating computational statistics problems that mirror real-world research and mathematical workflows. Create original statistics problems inspired by genuine research scenarios Develop problems requiring Python programming, often using libraries such as Numpy, SciPy, or Sympy Design complex, computationally intensive tasks that go beyond manual calculation Generate problems involving advanced reasoning in number theory, combinatorics, graph theory, and numerical analysis Base problems on authentic research challenges or practical mathematical use cases Verify solutions in Python with standard mathematical libraries Write clear, precise problem statements and supply validated answers Requirements Degree in Statistics or a closely related field Proficiency in Python for numerical validation; familiarity with tools like MATLAB, R, C, SQL, Numpy, Pandas, or SciPy is valued Minimum of 2 years' professional experience in applied work, research, or teaching Strong written English skills (C1 level or higher) Professional certifications (such as CMME, SAS Certifications, CAP) and experience with international or applied projects are considered an advantage Project workflow Apply Complete qualifications Join a project Perform tasks Receive payment Time commitment During active project phases, tasks typically require 10–20 hours per week. Workload may vary depending on project needs and is not guaranteed outside of these periods. Compensation Earnings can reach up to $50 per hour, depending on expertise and productivity. Actual rates depend on the complexity, scope, and skill requirements of each project. Other projects on the Mindrift platform may offer different compensation structures. Location This is a remote position based in Lyon, Auvergne-Rhône-Alpes, France.

Role overview Nexton seeks a Senior Windows Expert (H/F) to join the team in Lyon. The position centers on designing and supporting solutions that rely on Windows systems. Collaboration with technical peers is a key part of daily work. What you will do Design and implement solutions using Windows technologies Partner with colleagues to address technical challenges Use deep Windows expertise to enhance system performance and reliability Location This role is based in Lyon.

Join Scalian as an Experienced Project Manager specializing in messaging migration projects in Lyon. You will lead the transition to new messaging platforms, ensuring minimal disruption and effective implementation. Your expertise will be pivotal in managing cross-functional teams and communicating with stakeholders.

Please submit your resume in English and indicate your English proficiency level. toloka-ai, in partnership with Mindrift, brings together engineering specialists and project-based AI initiatives for leading technology companies. Projects focus on testing, evaluating, and improving AI systems. This freelance role is project-based and does not represent permanent employment. Role overview This position centers on designing computational engineering problems that reflect real-world tasks. The work involves creating scenarios that require Python programming for calculations and simulations. Problems should be computationally intensive, often using numerical methods or iterative solutions. Scenarios may include system design, optimization, and analysis, drawing inspiration from research challenges or practical engineering applications. Each problem must be clearly documented, with solutions validated using Python and standard engineering libraries. Requirements Degree in Electrical Engineering or a related discipline Strong Python skills for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar tools is a plus Minimum of 2 years of relevant professional experience (applied, research, or teaching) Understanding of practical engineering constraints and approximations Exceptional written English (C1 level or higher) Professional certifications (such as CMME, SAS Certifications, CAP) and experience with international or applied projects are advantageous How to apply Apply online Complete the qualification process Join a project Finish assigned tasks Receive payment Time commitment During active project phases, expect to spend approximately 10–20 hours per week, depending on project needs. This is an estimate and not a guaranteed workload. Compensation Earn up to $50 per hour, depending on expertise and task completion speed. Actual rates may vary by project, based on scope, complexity, and required skills.

Assystem is seeking a passionate and skilled Développeur Python to join our dynamic team in Lyon. In this role, you will be responsible for developing innovative software solutions that meet the needs of our diverse clientele. You'll work collaboratively in an agile environment, contributing to all stages of the software development lifecycle.

Role overview Mindrift seeks a Freelance No-Code Automation Workflow Specialist to contribute to the Tendem project (https://tendem.ai/). The main focus is building and refining integrations that combine AI capabilities with human input, aiming for smoother business operations. What you will do Work closely with Tendem Agents to automate and streamline routine business tasks Design and implement no-code workflows that connect various tools and systems Monitor workflow execution to ensure quality and efficiency Troubleshoot and improve automation logic using structured thinking Requirements Experience with no-code automation platforms Background in workflow design and optimizing business systems Strong analytical and problem-solving abilities Comfortable working remotely and independently Position details Part-time, freelance contract Remote role based in or near Lyon, Auvergne-Rhône-Alpes, France

Join our dynamic team at Egis Group as a Senior BIM Modeler specializing in CFO roles. We are seeking a highly skilled professional who is passionate about Building Information Modeling (BIM) and eager to contribute to innovative projects that shape the future of infrastructure. You will collaborate with cross-functional teams to deliver exceptional results and enhance project outcomes.

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.

Please submit your CV in English and indicate your English proficiency level. Mindrift connects skilled professionals with project-based AI work for leading technology companies. The focus is on testing, evaluating, and improving AI systems. This is a project-based contractor role, not a permanent position. Role overview The Freelance Optical Engineer with Python role centers on developing and evaluating computational physics problems that push the boundaries of AI in physics. Each project presents new challenges, often involving: Designing computational physics problems that reflect actual research practices Creating tasks that require Python programming to solve, using libraries such as Numpy, SciPy, or Sympy Ensuring that problems are complex enough to take days or weeks to solve computationally Developing challenges across mechanics, electromagnetism, thermodynamics, and quantum mechanics Basing problems on real research questions or practical physics applications Validating solutions with Python and established simulation libraries Documenting problem statements clearly and providing accurate, verified solutions Requirements Degree in Physics (theoretical, experimental, or computational) or a closely related discipline Strong Python skills 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 in applied, research, or educational settings Familiarity with numerical simulation techniques Ability to design problems that mirror real-world physics research Creative problem design across multiple physics domains Understanding of physics modeling and approximation methods Strong written English skills (C1 level or above) How to apply Apply Pass qualifications Join a project Complete assigned tasks Receive payment Project commitment Expect to dedicate roughly 10–20 hours per week during active project phases. Actual workload may vary depending on project requirements. Compensation Earn up to $45 per hour, depending on experience and contribution speed. Pay rates differ by project, reflecting scope, complexity, and required expertise. Other projects on the Mindrift platform may offer different compensation levels based on their requirements. Location: Remote , Lyon, Auvergne-Rhône-Alpes, France

Join Devoteam as a Senior Java Developer in Lyon, where you will be at the forefront of innovative software solutions. In this dynamic role, you will leverage your extensive experience in Java development to design, implement, and maintain robust applications that meet the needs of our clients.

Please submit your CV in English and indicate your English proficiency level. Mindrift connects subject-matter experts with project-based AI work for technology companies. These freelance roles focus on testing, evaluating, and improving AI systems. Engagements are structured as projects rather than permanent jobs. Role overview This freelance AI Trainer position is designed for research physicists with strong Python skills. Each project brings its own set of tasks, but core responsibilities often include: Designing computational physics problems that reflect real research workflows Creating challenges that require Python programming to solve, using libraries such as Numpy, SciPy, or Sympy Ensuring problems are complex enough to require computational solutions Developing questions in mechanics, electromagnetism, thermodynamics, and quantum mechanics that demand advanced reasoning Basing tasks on authentic research questions or practical applications in physics Validating solutions in Python with standard simulation libraries Documenting problem statements clearly and providing verified answers Requirements Degree in Physics (theoretical, experimental, or computational) or a closely related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or domain-specific libraries is a plus Minimum 2 years of relevant experience (applied, research, or teaching) Background in numerical simulation techniques Ability to design problems that mirror authentic physics research Creative problem-solving across several physics domains Familiarity with modeling and approximation methods Exceptional written English skills at C1 level or higher Project commitment Most projects require about 10–20 hours per week during active phases. Actual hours may vary and are not guaranteed, as workload depends on project needs. Compensation Earn up to $45 per hour, depending on contribution and pace. Pay rates may differ across projects, reflecting their specific scope and complexity. Application process Apply Pass qualifications Join a project Complete tasks Receive payment Location: Remote , Lyon, Auvergne-Rhône-Alpes, France Note: This is project-based freelance work and does not constitute permanent employment.

Join our dynamic team at SQLI as a Senior Front-End React Developer! We are searching for a passionate and skilled developer to enhance our digital platforms with cutting-edge technology. You will work collaboratively within our France DXP department, leveraging your expertise in React to create seamless user experiences that captivate our clients.If you're eager to tackle exciting challenges and drive innovation, this is the perfect opportunity for you.

We are seeking a talented and experienced Senior Java / Angular Developer to join our Apps Engineering practice on a strategic project within the energy sector. You will become a vital member of a close-knit team (typically 5 to 6 people) facing significant technical challenges in a high-impact business scope: managing critical data, integrating partner systems, and ensuring robustness and performance. Project ContextIn this role, you will work on a foundational project for a key player in the energy sector, collaborating with a team of around 5 to 6 developers. You will have substantial technical autonomy while operating within an Agile/Scrum framework with bi-weekly sprints. Development & Architecture:Design and develop full-stack features utilizing Java and Angular, taking true ownership of code quality.Design and expose robust, well-documented REST APIs.Contribute to technical architecture and suggest improvements.Manage and manipulate complex business data sets (imports, exports, batch processing).Interact with partner systems (GIS, portals, third-party APIs).Cloud & Infrastructure AWS:AWS: Deploy and maintain application services on AWS.Contribute to the optimization of cloud costs and performance.Participate in defining infrastructure as code (IaC) when applicable.Quality & Testing:Ensure code quality through unit and integration testing.Analyze and rectify anomalies detected by TNR or manual tests.Validate developments in the Qualification and Acceptance environments.Deployment, Monitoring & Technical Leadership:Actively participate in MEP and CI/CD monitoring (GitLab).Mentor junior developers within the team (code reviews, mentoring).Document developments, architectural decisions, and technical processes.Be proactive in continuous improvement of team practices.

We are seeking a highly skilled and motivated Senior Fullstack Developer to join our dynamic team at inetum2. This role is ideal for individuals who thrive in a fast-paced environment and are passionate about developing innovative solutions.As a Senior Fullstack Developer, you will play a crucial role in designing, developing, and maintaining applications across the full technology stack. You will collaborate with cross-functional teams to deliver high-quality software that meets our clients' needs.

Join our dynamic team at SQLI as a Senior Front-End React Developer. In this role, you will leverage your expertise in React to create intuitive and engaging user interfaces for our clients. You will collaborate closely with designers and back-end developers to bring innovative web applications to life, ensuring optimal performance and user experience.As a key member of our development team, you will also mentor junior developers and contribute to best practices in coding and design. Your passion for technology and commitment to quality will play a crucial role in driving our projects to success.

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.