Freelance AI Trainer Specializing in Biology and Python

Toloka AI is looking for a freelance AI trainer with a strong background in both biology and Python. This remote position is based in Buenos Aires, Argentina. Role overview This role centers on developing and delivering training programs that connect biological concepts with Python programming. The aim is to support AI education by making complex topics acce…

We invite you to submit your CV in English and specify your proficiency level in English.At Mindrift, we bridge the gap between specialists and project-based AI opportunities from leading technology firms, emphasizing the testing, evaluation, and enhancement of AI systems. Please note that participation is project-based and does not entail permanent employment.Opportunity OverviewEach project presents distinct tasks, and contributors may:Craft rigorous Computer Science challenges that mirror professional practice.Assess AI solutions for their accuracy, underlying assumptions, and constraints.Utilize Python (NumPy, Pandas, SciPy) to validate calculations or simulations.Refine AI reasoning to align with industry-standard logic.Implement structured scoring criteria for multi-step problems.Collaborate with a global network of PhDs to uphold the highest standards of scientific integrity.Qualifications We SeekThis role is ideal for Computer Science specialists with Python experience, looking for part-time, non-permanent projects. Preferred qualifications include:A degree in Computer Science or a related field.Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, NumPy, Pandas, SciPy, or equivalent programming languages is acceptable.At least 2 years of professional experience, whether in applied, research, or teaching roles.Strong written English skills (C1+).Professional certifications (e.g., CMME, SAS, CAP) and experience in international or applied projects are advantageous.How the Process WorksApply → Pass qualification(s) → Join a project → Complete tasks → Receive compensationProject Time CommitmentFor this project, tasks are estimated to require approximately 10–20 hours per week during active phases, based on project needs. This is an estimate, not a guaranteed workload, and applies only during active project phases.Compensation DetailsContributors can earn up to $17 per hour, depending on their level of expertise and contribution pace. Compensation may vary across projects based on their scope, complexity, and the expertise required. Please be aware that other projects on the platform might offer different compensation levels based on specific requirements.

We are seeking a skilled Senior Python Developer with proficiency in Power Apps to join our dynamic team at Talan Academy. In this role, you will leverage your technical expertise to develop innovative software solutions that meet client needs. You will be collaborating with cross-functional teams to design, build, and maintain efficient, reusable, and reliable Python code while integrating Power Apps into our existing systems.If you are passionate about technology and eager to make an impact in a collaborative environment, we encourage you to apply!

Join qodea, a pioneering global technology group that is shaping the future. We provide exceptional professionals with a platform for impactful work that defines careers. Here, you will tackle challenges that have yet to be solved, contributing to groundbreaking projects.Our exclusive team is sought after by industry leaders such as Google, Snap, Diageo, PayPal, and Jaguar Land Rover for their most pressing and complex challenges, especially when deadlines are tight or solutions have previously eluded others.Say goodbye to conventional consultancy; at qodea, you will be at the intersection of technology, design, and human behavior, delivering quick, tangible results that leave a lasting impact.We seek individuals who exemplify:Innovative problem-solving abilities.Accountability for every outcome.Unwavering integrity.Role OverviewAs a Senior Data Science Engineer at qodea, you will play a crucial role in transforming analytical insights into production-ready models. Your focus will be on core data science and machine learning, particularly in recommendation systems and predictive analytics. You will collaborate within a cross-functional team to ensure our AI solutions are practical, scalable, and robust.Key Responsibilities:Conduct statistical modeling and apply both supervised and unsupervised learning algorithms.Preprocess, clean, and engineer features from large datasets to enhance model performance.Utilize graph structures for analytical insights and work with graph databases.Integrate large language models (LLMs) into applications for reasoning and data comprehension.Design and implement model validation and evaluation frameworks to ensure reliable predictions.Collaborate with MLOps and data engineers to transition models from research to production.Qualifications That Will Make You Stand Out:Proficient in Python for data analysis and machine learning using TensorFlow or PyTorch.Experience with model clustering and segmentation techniques.Strong analytical and critical thinking skills, employing an iterative approach to development.Familiarity with MLOps principles, including versioning and monitoring.Skilled in SQL for data extraction and manipulation.Additional Nice-to-Haves:Experience with data vectorization and emerging vector-based technologies.Knowledge of Google Cloud Platform (GCP) data and ML services.What We Expect From You:We are establishing a world-class delivery center in Buenos Aires and are looking for the region's top engineering talent. We believe that the best work arises from in-person collaboration. Therefore, we expect a genuine commitment to being present in the office one to two days a week, when not engaged in project work, to help cultivate our culture and engage in spontaneous problem-solving.

Please submit your CV in English and specify your English proficiency level. Mindrift connects subject matter experts to AI projects for major technology companies. Assignments focus on testing, evaluating, and improving AI systems. These are project-based freelance roles and do not represent permanent employment. Role overview This freelance position is for material scientists or engineers with strong Python skills who want to contribute to AI projects on a flexible, part-time schedule. The work is remote and based in Córdoba, Córdoba Province, Argentina. Key responsibilities Create original materials that mirror real engineering workflows Develop problems that require Python programming for engineering calculations and simulations Ensure problems are computationally challenging, using numerical or iterative methods Design assignments around system design, optimization, and analytical processes Base tasks on real research challenges or practical engineering scenarios Validate solutions in Python, using recognized engineering libraries Document problem statements clearly and provide verified solutions Requirements Degree in Material Science or a related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, NumPy, Pandas, SciPy, or similar tools is also acceptable At least 2 years of relevant experience in applied work, research, or teaching Strong understanding of practical engineering constraints and approximations Excellent written English (C1 level or higher) Project commitment Estimated workload is 10–20 hours per week during active project phases. Actual hours may vary depending on project needs. Compensation Contributors may earn up to $14 per hour, depending on expertise and pace. Pay varies with project complexity and required skill level. Application process Application Qualification assessment Project participation Task completion Compensation

Role Overview Muttdata is looking for a Senior Data Engineer based in Argentina. This role focuses on building and maintaining data pipelines and architectures that help drive business decisions. The Senior Data Engineer will work closely with teams across the company to keep data accurate, accessible, and reliable. What You Will Do Design and develop data pipelines that move and transform data efficiently Maintain and improve data architecture to support analytics and reporting Work with other teams to ensure data remains accurate and easy to access Apply current technologies to strengthen the company’s data systems Location This position is based in Argentina.

Coderio is looking for a Tech Lead in Buenos Aires to guide the development of a Real-World Data (RWD) platform focused on high-quality medical imaging (DICOM). This position centers on leading the migration from an existing Golang-based system to a new, scalable Python architecture. Role overview This hands-on leadership role sets the technical vision and shapes architectural decisions for a next-generation Data-as-a-Service (DaaS) platform on Azure. The work involves building robust solutions for managing healthcare data at scale and ensuring the platform meets demanding quality standards. What you will do Direct the transition from a legacy Golang system to a modern Python-based platform Define and communicate the technical roadmap for the RWD platform Lead architectural planning and implementation on Azure Collaborate with international teams to deliver scalable digital solutions What we value Experience with Python, Go, React, and Azure Ability to set technical direction and drive architectural decisions Strong communication and collaboration skills Commitment to technical excellence and transparent teamwork

We are excited to announce an opening for a Lead Analytics Engineer contractor position within our esteemed Data Team. We are specifically looking for candidates based in Mexico or Argentina.As a Lead Analytics Engineer, you will play a vital role in our data team.Reporting directly to the Hiring Manager, you will leverage data engineering best practices to enhance analytics code, ensuring efficient transformation, testing, and documentation of data.Your goal will be to deliver clean and organized datasets to end users.You will provide expert code reviews and mentorship to fellow engineers in the data domain.Your responsibilities will include building and maintaining composable data models and optimizing SQL query performance.You will convert raw data into actionable business insights by collaborating closely with stakeholders, creating analyses that address critical business questions.Moreover, you will craft data visualizations and assist stakeholders in navigating the available data visualization tools.Why You’ll Love This Role:Utilize SQL and Python to build new analyses and support existing ones.Incorporate software engineering principles such as version control and continuous integration into the analytics codebase.Enhance our data warehouse with well-structured data primed for analysis.Data Quality and Testing:Employ advanced data testing strategies to ensure datastores align with business logic.Implement validation checks and automated testing processes to uphold data quality in your ETL/ELT pipelines.Collaboration and Communication:Engage with stakeholders to define business logic and data expectations.Drive a data-driven culture by surfacing insights to stakeholders proactively.Lead initiatives regarding problem definition, scoping, design, and planning.Infrastructure and Automation:Develop tools and automation to manage data infrastructure efficiently.Oversee large-scale data migrations within relational databases.Why You’re a Great Fit:8+ years of experience working with data in a software environment.Required Skills: Mastery of SQL and Python; extensive experience with business semantic layer tooling, data catalog tooling, and data management.

Anyone AI is actively seeking talented software engineers proficient in Python and/or JavaScript/TypeScript to collaborate on an innovative project with a premier AI Lab. This opportunity allows you to leverage your skills in a fully remote environment while contributing to cutting-edge AI initiatives.Qualifications:Exceptional written English communication skills3 to 7 years of professional experience in software engineeringAdvanced knowledge of Python and JavaScript/TypeScript; familiarity with Java, C#, or Go is a plusExperience in backend or full-stack development within production systemsProficient in using testing frameworks such as pytest, Jest, JUnit, xUnit, or Go testingStrong debugging skills for navigating complex, multi-file codebasesExperience with code reviews, refactoring, and production migrationsEngagement: This is a part-time, project-based consultancy role.Work Type: Fully RemoteAs a contributor, you will be responsible for designing and evaluating realistic software engineering tasks that include debugging, feature implementation, refactoring, and test generation. Your work will involve creating complex coding scenarios and reviewing peer submissions for accuracy and quality.Responsibilities:As a contributor, you will:Design and implement multi-file coding tasks for bug fixes, feature development, refactoring, and testingCreate clear natural-language specifications and reference implementationsDevelop and enhance unit and integration test suitesReview tasks generated by peers for correctness, clarity, and realismIdentify edge cases, ambiguities, and potential failure modesEnsure consistency between specifications, code, and expected outputsExpected Outcomes:Contribute to a high-quality coding environment through rigorous testing and validation

Join our team as a Regional Engineer at Veolia Environnement S.A., where you will play a crucial role in the success of our engineering projects. You will be responsible for design, project execution, and ensuring that all engineering standards are met. This is an exciting opportunity for professionals eager to contribute to sustainable environmental solutions.

We are seeking a dedicated Application Engineer to join our dynamic team at Veolia Environnement S.A. in Neuquén. In this role, you will be responsible for providing technical expertise and support for our innovative engineering projects. You will collaborate with cross-functional teams to develop and design solutions that meet our clients' needs while ensuring quality and efficiency in all engineering processes.

Role Overview:Join our dynamic engineering team at rehire, a forward-thinking technology company specializing in IoT solutions for operational environments. We seek a Software Engineer II – Process Engineering who will be pivotal in enhancing internal tools, APIs, and workflows that streamline onboarding, configuration, and systems processes across web, mobile, and cloud services. Your collaboration with engineering and product teams will be crucial in developing scalable and maintainable solutions that drive our mission forward.Key Responsibilities:Design, develop, and maintain robust and secure web and mobile applications.Implement and manage REST APIs to facilitate seamless integrations.Produce clean, efficient, and maintainable code primarily using PHP and Python.Update and enhance mobile applications utilizing the Capacitor Framework.Diagnose and troubleshoot issues across the entire system, from IoT devices to cloud backend.Engage in collaborative efforts with cross-functional teams within an agile framework.Qualifications:Minimum of 3 years of experience as a Software Developer (mid-level / semi-senior).Proficient in backend development with PHP and/or Node.js.Strong understanding of cloud environments, with preference for AWS.Experience in designing and implementing REST APIs.Familiarity with containerization technologies like Docker and Kubernetes.Knowledgeable in database management systems, including MySQL and DynamoDB.Exposure to frontend technologies such as HTML, CSS, and JavaScript.Exceptional analytical and problem-solving capabilities.Effective communication skills and the ability to work collaboratively in teams.Proficient in English (written and spoken) at B2+ / C1 level is mandatory.Demonstrated experience working remotely with US-based teams.Familiarity with the restaurant, retail, or operational sectors is a plus.About the Position:This is a full-time, 100% remote position. The working schedule is Monday to Friday, from 9:00 AM to 6:00 PM (US Eastern Time).

Join Segula Technologies as a Project Engineer in Rosario. As a key member of our project management team, you will play a crucial role in the successful execution of engineering projects. This position is ideal for recent graduates and individuals looking to kickstart their careers in engineering and project management.

Join a dynamic team at Span, where small teams work magic within any organization.At Span, we recognized a common challenge: as teams grow, important context can become obscured by excessive meetings, tools, and processes. This leads to inefficiencies in key areas such as prioritization, resource allocation, collaboration, and management—where errors can be particularly costly.We are pioneering a revolutionary tool designed to provide clear and actionable software engineering insights for both humans and AI, empowering ownership, autonomy, and extraordinary impact across engineering teams.Our vision includes:Empowering engineering leaders to maximize their teams' time, eliminate hidden toil costs, and harness their full potential.Enabling everyone in the organization to have a clear understanding of ongoing projects, facilitating better decision-making and reliable delivery.Automating tasks related to tagging, status updates, and coordination meetings, allowing team members to focus on meaningful work.About the RoleAs a Forward Deployed Engineer at Span, you will spearhead intricate implementations for our clients, navigating high-stakes situations where solutions aren't always straightforward. You'll integrate with engineering leaders at premier organizations to identify their unique challenges, analyze their workflows, and implement solutions that significantly enhance developer productivity and organizational transparency.You will collaborate across product, engineering, and customer success teams to design full-stack solutions, develop integrations, and ensure our platform delivers tangible value in live environments.Your role includes being the internal advocate for our customers, transforming field insights into product enhancements and scalable solutions that benefit our entire client base.Success in this position involves taking ownership of customer results from initial discussions through to successful production deployment. You will balance rapid execution with quality, technical thoroughness with strategic foresight, and hands-on development with cross-functional collaboration.

Join atexis as a CAMO/MRO Engineer, where you will play a critical role in ensuring the safety and efficiency of aircraft operations. Your expertise will be vital in managing Maintenance, Repair, and Overhaul processes, contributing to the overall effectiveness of our aviation services.

AlixPartners partners with organizations to address complex business challenges and develop practical solutions. The company aims to create lasting value for clients, teams, and the wider community. Its products are built to support meaningful impact and encourage sustainable growth. The culture at AlixPartners centers on respect, inclusion, and authenticity. The team places a strong emphasis on diversity and strives to foster both personal and professional development. Policies and practices are regularly reviewed to advance equity and inclusion throughout the workplace. Work model This Director of Engineering role is based in Buenos Aires and follows a hybrid work arrangement. Team members divide their time between remote work and in-person collaboration. Participation in key events, such as business conferences and workshops, may require being on site to maintain strong connections with users and colleagues.

Role overview Muttdata is hiring a Lead Data Engineer based in Argentina. This role guides the development of data solutions and shapes the company’s data strategy. The Lead Data Engineer manages a skilled team, working alongside data scientists and other partners to design and build data architectures that support business needs. What you will do Lead a team of engineers focused on data projects Work closely with data scientists and stakeholders to deliver effective solutions Design and implement data architectures that scale with business growth Ensure data processes remain efficient and match company goals

WHO ARE WE?Launch Potato is a thriving digital media enterprise that captivates over 30 million visitors monthly through prominent brands like FinanceBuzz, All About Cookies, and OnlyInYourState.As The Discovery and Conversion Company, our mission is to connect consumers with the world’s leading brands through innovative data-driven content and technology.With our headquarters in South Florida and a remote-first team spanning over 15 countries, we have cultivated a high-growth, high-performance culture where speed, ownership, and measurable impact drive our success.WHY JOIN US?At Launch Potato, you will fast-track your career by taking ownership of outcomes, moving quickly, and making a significant impact alongside a global team of exceptional performers.

WHO WE ARE?Launch Potato is a thriving digital media company that attracts over 30 million monthly visitors through our popular brands such as FinanceBuzz, All About Cookies, and OnlyInYourState.As the Discovery and Conversion Company, our mission is to connect consumers with top brands through data-driven content and technology.Headquartered in South Florida, we operate with a remote-first team across more than 15 countries, fostering a high-growth, high-performance culture where speed, ownership, and measurable impact are key to our success.WHY JOIN US?At Launch Potato, you'll fast-track your career by taking ownership of outcomes, acting swiftly, and making a significant impact with a global team of top performers.

Join Us in Transforming Financial Experiences for Millions!At RecargaPay, our mission is to provide the premier payment experience for Brazilian consumers and small businesses by creating a robust digital ecosystem that connects both the banked and unbanked. We strive to be a comprehensive solution for all financial needs, serving over 10 million users and processing upwards of USD 4 billion annually. Since becoming profitable in 2022, we have established our own credit business and are expanding within the dynamic Brazilian financial landscape as an AI-first, fully remote team.Our ambition is clear: to deliver the ultimate payment experience across Brazil, catering to both individuals and small enterprises.We cherish values such as autonomy, ownership, and a proactive attitude. We are in search of individuals who are curious, hands-on, and impact-driven; those who are eager to tackle real challenges, collaborate with talented teams, and redefine possibilities.If you're prepared to contribute your best work, at scale, with purpose — this is the place for you.Role OverviewAs a Principal DevEx Engineer, your core responsibility is to enhance the developer experience comprehensively. You will work on minimizing friction, accelerating onboarding to first contribution, and boosting productivity throughout the software delivery lifecycle. Your role involves driving modernization and platform initiatives while promoting high-leverage practices such as DevEx, SRE, DevSecOps, event-driven architecture, and AI-assisted engineering. You will partner with executive leadership and guide Staff/Senior engineers to deliver scalable, reliable, compliant, and cost-effective solutions on AWS. A key aspect of your role will be to translate daily developer needs into streamlined workflows, effective tooling, and well-documented processes, enabling smooth adoption through targeted training and support.