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Computer Science Specialist with Python Expertise for AI Projects

Toloka AI

Part-time|$17/hr - $17/hr|Remote|Remote — Belo Horizonte, State of Minas Gerais, Brazil

We invite you to submit your CV in English and specify your English proficiency level.Mindrift serves as a bridge connecting experts with project-based AI opportunities from prestigious technology companies, concentrating on the testing, evaluation, and enhancement of AI systems. Please note that this is a project-based role, not a permanent position.Opportu…

May 2, 2026

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Solutions Engineer at Pareto.AI | Brazil

Pareto.AI

Full-time|On-site|Brazil

About Pareto.AI Pareto.AI brings together talented people from around the world to help shape advanced AI models. The team works closely with leading AI and crowd research experts from organizations such as Anthropic, Character.AI, Imbue, Stanford, and the University of Pennsylvania. The goal: build a platform where AI developers and domain specialists can work together fairly and ethically. Role Overview: Solutions Engineer Based in Brazil, the Solutions Engineer partners with sales, operations, customer success, and engineering teams. This position plays a key part in matching Pareto.AI’s technology to the unique needs of enterprise clients. The work involves creative problem-solving and designing solutions for real-world business challenges. What You’ll Do Collaborate across teams to understand client requirements and technical constraints Help design and implement solutions that address client challenges Support the delivery of tailored AI models for enterprise customers About the Team Pareto.AI is committed to building a fair platform for AI professionals and domain experts. The company’s partnerships with top researchers reflect a focus on ethical and impactful AI development. Learn more about Pareto.AI at Pareto.AI.

Apr 17, 2026

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Mid-Level Fullstack Developer at CI&T | Brazil

CI&T

Full-time|On-site|Brazil

CI&T combines human expertise and artificial intelligence to deliver technology solutions at scale. With over 8,000 professionals and a 30-year track record, the company partners with clients worldwide to make AI practical and valuable. Candidates based in the Metropolitan Region of Campinas must comply with the current office attendance policy and work from the Campinas office as required. Role overview This mid-level fullstack developer role centers on building and maintaining scalable systems using Java/Springboot and React/Next.js. The position involves integrating applications with cloud platforms and working closely with a technical team to deliver reliable solutions. Main responsibilities Develop and maintain applications with Java/Springboot and React/Next.js Participate in technical decisions and suggest improvements for scalability Integrate systems within secure and resilient cloud environments Design and implement BFF/microservices architectures for Kubernetes (EKS) deployments Help build CI/CD pipelines for secure, traceable releases Ensure observability using logs, metrics, and alerts Communicate technical solutions clearly and collaborate with team members Technologies and tools Cloud: AWS (primary), Azure (occasional) Platform: EKS, API Management, ECS, Lambdas, Storage, Queues Data: PostgreSQL, Oracle, Couchbase Integrations & Security: APIs, SSO (ForgeRock) DevOps: CI/CD, Infrastructure as Code Observability: Dynatrace Languages/Frameworks: Java/Springboot, React/Next.js Requirements Professional experience as a Java/Springboot developer Hands-on development with React/Next.js Working knowledge of AWS Cloud (Lambdas, SQS, EKS) Understanding of both relational and non-relational databases Technical maturity, collaborative approach, and focus on quality Clear communication skills Commitment to continuous improvement and operational reliability Preferred qualifications Experience with caching tools such as Redis Background in corporate or governed environments Work with API-oriented architectures and microservices Exposure to solutions using Artificial Intelligence Experience communicating with technical leadership at client organizations Desired knowledge Advanced understanding of data security practices

Apr 22, 2026

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Mid-Level Fullstack Developer (Java-Angular) - Brazil

CI&T

Full-time|On-site|Brazil

This Mid-Level Fullstack Developer position focuses on Java and Angular development for a project in the financial sector. The role is open to professionals based anywhere in Brazil. CI&T values a mix of in-person and remote collaboration, depending on location. Work location Candidates living in the Metropolitan Region of Campinas must attend the Campinas office regularly, following the current company policy. Those outside this region may work remotely from elsewhere in Brazil. What you will do Develop and maintain fullstack applications using Java and Angular Collaborate with a multidisciplinary team to deliver solutions for the financial sector Requirements Professional experience with Java and Angular Based in Brazil Ability to work onsite in Campinas if residing in the Metropolitan Region

Apr 22, 2026

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Forward Deployed Engineer (AI) - Advertising

Truelogic

Full-time|On-site|Brazil

The Forward Deployed Engineer (AI) - Advertising role centers on bringing AI-driven solutions to life for major clients in the digital marketing sector. This position combines hands-on software engineering with direct client engagement, adapting advanced AI technologies to address specific business challenges in advertising. What you will do Implement and tailor AI solutions to meet the needs of large-scale clients in advertising. Work closely with client teams to ensure technical deployments address real-world business problems. Blend software engineering, solution architecture, and field operations to deliver measurable results. Collaboration This role partners with a global digital marketing network recognized for combining creative strategies with advanced technology. Expect to work alongside teams that value scalable, innovative approaches to digital advertising. Location This position is based in Brazil.

Apr 24, 2026

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Senior Fullstack Developer (Java and Angular) - Brazil

CI&T

Full-time|On-site|Brazil

Join us at CI&T, leaders in technological transformation, where we blend human expertise with AI to craft scalable tech solutions. With a global team of over 8,000 CI&Ters and partnerships with more than 1,000 clients over our 30-year history, we make Artificial Intelligence our reality.Note: Candidates residing in the Metropolitan Region of Campinas are required to work on-site in our office, in accordance with our current attendance policy.Key Responsibilities:- Foster strong relationships with clients and team members;- Ensure clear communication with the team and clients regarding daily activities;- Engage actively in all phases of the software development lifecycle, including technical refinement, development, testing, and deployment;- Monitor adherence to best development practices;- Proactively identify opportunities and challenges, acting swiftly to develop preventive solutions;- Assist in guiding the team and contributing to project decision-making;- Proficiency in Java development with Spring Boot, including experience in microservices architecture and effective business domain segregation practices;- Participate in code reviews to ensure quality and compliance with best practices;- Collaborate effectively with both team members and clients to create a productive and harmonious work environment;- Experience in implementing engineering best practices such as DevOps, CI/CD, and SCM for APIs. Qualifications:- Proficient in Java, Spring Boot, Angular, and Node.js;- Solid experience with Angular;- Familiar with quality culture (unit, functional, integration, and automated testing);- Experience with DevOps culture;- Skilled in code review practices;- Mastery of development best practices and principles (Clean Code and hexagonal architecture);- Experience with agile methodologies including SCRUM and KANBAN, including dailies, sprints, and reviews.

Apr 30, 2026

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Senior Fullstack Developer with English Proficiency - Remote

Capco

Full-time|Remote|Brazil - Sao Paulo

Join our dynamic team at Capco, a global consultancy specializing in technology and business solutions for the financial services and energy sectors. With 33 offices across the Americas, Europe, and Asia-Pacific, we are passionate about driving innovation and helping our clients thrive. If creativity and innovation excite you, Capco is the perfect place for you to accelerate your career!We are seeking a highly skilled and tech-savvy Fullstack Developer to join our development team.KEY RESPONSIBILITIES:Engage directly in development using React and Java, embracing modern software engineering practices and delivery, utilizing Java Backend, Microservices principles, JAX-RS, Websphere, XML, DB2 (or strong SQL experience), React, jQuery, JavaScript, HTML DOM, HTML5, CSS3, and optionally: Node.js, Mockito, Postman.Conduct API testing to ensure stable and high-quality code.Collaborate with Senior Developers to deliver quality code that meets client needs.Exhibit a strong passion for learning and a willingness to adopt new technologies.Contribute to a culture of innovation, ideas, and continuous improvement, showcasing a positive attitude, solid communication skills, and a desire to learn and collaborate.Ensure clear documentation of created or modified functionalities.

May 4, 2026

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Senior Fullstack Developer with English Proficiency - Remote

Capco

Full-time|Remote|Brazil - Sao Paulo

Join Capco, a leading global consulting firm specializing in technology and business solutions within the financial services and energy sectors. We are passionate about helping our clients thrive, with 33 offices across the Americas, Europe, and Asia-Pacific! If creativity and innovation drive you, Capco is the perfect place for you to accelerate your career.We are currently seeking a highly skilled and technology-driven Fullstack Developer to join our dynamic development team.

May 4, 2026

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Freelance AI Trainer - Physics Expert with Python Skills

Mindrift

Part-time|$14/hr - $14/hr|Remote|Remote — Belo Horizonte, State of Minas Gerais, Brazil

We invite you to submit your CV in English, clearly indicating your level of English proficiency.Mindrift specializes in connecting talented professionals with project-based AI opportunities for top technology companies, focusing on the testing, evaluation, and enhancement of AI systems. This position is project-based and not a permanent role.Key ResponsibilitiesAs a contributor, your tasks may include:Designing innovative computational physics problems that replicate authentic physics research workflows;Creating Python-based problems to solve using libraries such as Numpy, SciPy, and Sympy;Ensuring that problems are computationally intensive, requiring significant time to solve (days/weeks) rather than manual solutions;Developing scenarios that involve complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics;Using real research challenges or practical applications from the field of physics as a basis for problems;Validating solutions through Python with standard physics simulation libraries;Documenting problem statements clearly and providing verified correct answers.QualificationsThis role is ideal for physicists with Python experience who are looking for part-time, non-permanent project work. The ideal candidate will possess:A degree in Physics (Theoretical, Experimental, or Computational) or a related field;Proficiency in Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, and Stata is also acceptable;A minimum of 2 years of professional experience, which may include applied, research, or teaching experience;Experience in numerical simulation methods;The ability to create problems that reflect real physics research workflows;Creative problem-solving skills across various areas of physics;Familiarity with physics modeling and approximation techniques;Strong written English skills (C1+ level).How the Process WorksApply → Pass qualifications → Join a project → Complete tasks → Receive paymentProject Time ExpectationsDuring active phases, tasks are estimated to require approximately 10–20 hours per week based on project demands. This is an estimate and not a guaranteed workload.CompensationContributors can earn up to $14 per hour, depending on their level of expertise and contribution pace. Please note that compensation can vary by project based on scope, complexity, and required expertise. Other projects on the platform may offer different earning levels based on their specific requirements.

Apr 30, 2026

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Freelance AI Trainer - Research Physicist with Python Skills

Mindrift

Contract|$14/hr - $14/hr|Remote|Remote — Belo Horizonte, State of Minas Gerais, Brazil

We invite you to submit your CV in English, specifying your level of English proficiency.Mindrift bridges the gap between specialists and exciting project-based AI roles with leading tech companies, dedicated to the testing, evaluation, and enhancement of AI systems. Please note that involvement is project-specific and does not lead to permanent employment.Your role will encompass:Crafting unique computational physics challenges that emulate authentic physics research workflows;Developing problems that require Python programming for resolution (utilizing Numpy, SciPy, Sympy);Ensuring that the problems are computationally intensive, requiring several days or weeks to solve manually;Formulating problems that demand complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics;Drawing from actual research challenges or practical applications within physics;Validating solutions through Python using standard physics simulation libraries;Providing clear documentation for problem statements and verified answers.We're looking for candidates who possess:A degree in Physics (Theoretical, Experimental, or Computational) or a related field;Proficiency in Python for numerical validation. Familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, domain-specific libraries, Stata, or any programming language is acceptable;A minimum of 2 years of professional experience in applied research or teaching;Expertise in numerical simulation methods;The ability to design challenges that reflect real physics research processes;Innovative problem design skills across various physics fields;An understanding of physics modeling and approximation techniques;Exceptional written English skills (C1+ level).How the application process operates:Apply → Pass qualification(s) → Join a project → Complete tasks → Get compensatedProject time expectations:During active project phases, tasks are estimated to require approximately 10–20 hours per week, depending on project needs. Please note this is an estimate and not a guaranteed workload.Compensation:Contributors can earn up to $14 per hour, based on their level of expertise and contribution speed. Compensation may vary among projects depending on their complexity, requirements, and scope.

May 1, 2026

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AI Evaluation Engineer - Mathematics & Algorithms

gramian

Full-time|Remote|Remote — Brazil

gramian seeks an AI Evaluation Engineer - Mathematics & Algorithms to work remotely from Brazil. This role centers on assessing and strengthening the performance of AI systems, emphasizing mathematical precision and careful algorithmic evaluation. Key responsibilities Create and improve evaluation metrics tailored to AI models Design and implement methods for testing and measuring AI effectiveness Work closely with team members to analyze results and recommend improvements What we look for Solid background in mathematics and algorithm design Strong attention to detail and a methodical approach to problem-solving Interest in advancing artificial intelligence through careful evaluation Ability to collaborate effectively with a diverse team Location This is a remote position based in Brazil.

Apr 27, 2026

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Senior Software Engineer – AI Infrastructure

jobgether

Full-time|Remote|Brazil

jobgether seeks a Senior Software Engineer specializing in AI Infrastructure to join the team in Brazil. The focus of this position is to design, build, and maintain the AI systems that drive both current projects and future company growth. Key Responsibilities Create and refine AI infrastructure to support various company initiatives Maintain and enhance existing AI systems, ensuring reliability and strong performance Collaborate with teams throughout jobgether to introduce and implement new technologies Help guide the overall direction of AI efforts within the company Location This role is based in Brazil.

Apr 28, 2026

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Senior Consultant for Freelance AI Projects (MBB & Top-Tier Firms)

Toloka AI

Contract|Remote|Remote — Belo Horizonte, State of Minas Gerais, Brazil

Role overview Toloka AI is hiring a Senior Consultant to work on freelance AI projects. This position is designed for someone with experience at MBB or other top-tier consulting firms. The focus is on developing strategies and solutions to enhance Toloka AI's services. The role operates fully remotely, with a base in Belo Horizonte, State of Minas Gerais, Brazil. Key responsibilities Use consulting expertise to guide the direction and execution of AI projects Work closely with an international group of specialists Support the growth and improvement of Toloka AI's service offerings Location This is a remote role based in Belo Horizonte, State of Minas Gerais, Brazil.

Apr 28, 2026

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AI Engineer - LLM Applications Specialist

TRACTIAN

Full-time|On-site|São Paulo, SP

Join the Data Science Team at TRACTIANAt TRACTIAN, our Data Science team is dedicated to unlocking valuable insights from extensive industrial data. Employing cutting-edge statistical techniques, algorithms, and data visualization methods, we convert raw data into actionable intelligence that influences decision-making across engineering, product development, and operational strategies. Our team is continuously refining prediction models, uncovering trends, and delivering data-driven solutions that significantly improve our operational efficiency and product quality.Key ResponsibilitiesWe are on the lookout for a skilled LLM Applications Engineer who will be responsible for designing, developing, and deploying production-ready applications leveraging the capabilities of large language models. In this position, you will create robust APIs, implement intelligent information retrieval systems, and establish resilient infrastructure that bridges AI capabilities with real-world industrial applications.

Apr 7, 2025

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Software Engineer at Enter.ai | São Paulo

Enter.ai

Full-time|On-site|São Paulo

Join Enter.ai!Our mission is to position Brazil as a global leader in artificial intelligence.At Enter.ai, we merge human expertise and artificial intelligence to execute critical, high-volume tasks that still rely on manual processes on a large scale. Our platform enables major companies across Latin America to navigate intricate workflows, starting with legal operations and expanding across the enterprise. We leverage AI to create tailored legal defenses at scale, assisting businesses in lowering costs and enhancing their litigation success rates.Our team consists of the finest talents from prestigious institutions in Brazil and around the globe, including Harvard, UPenn, Stanford, ITA, USP, and Unicamp. Companies like Meta, Itaú, Mercado Livre, Latam, Airbnb, Santander, iFood, and Nubank partner with Enter.ai to manage critical processes more efficiently. With over R$300M raised and a valuation of R$2B, we have the backing of major investment funds like Sequoia and Founders Fund who share our vision for the future.Position OverviewAs a Software Engineer at Enter.ai, you will play a pivotal role in constructing the foundation of our AI agent platform. This position requires making critical technical decisions, defining architecture, and tackling scalability challenges while processing large volumes of data in production systems. You will engage with problems involving Backend, Machine Learning, and LLMs, enjoying a high degree of autonomy and accountability for the quality and advancement of our systems.Key ResponsibilitiesDefine and enhance the architecture of the systems supporting the AI agent platform, ensuring high availability, performance, and reliability.Lead decisions regarding scalability, ensuring the platform evolves with increasing demand and complexity.Design and implement solutions for processing large volumes of data while ensuring integrity, security, and efficiency at scale.Collaborate with AI teams to integrate machine learning models and LLMs, ensuring their effective application in production.Raise the technical standard of the team through code reviews, establishing best practices, and mentoring fellow engineers.

Mar 23, 2026

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Mid-Level Fullstack Developer (Java/Angular) - Brazil

CI&T

Full-time|On-site|Brazil

CI&T develops scalable technology solutions by combining human expertise with artificial intelligence. With more than 8,000 professionals worldwide and over 1,000 client partnerships, the company has built a 30-year track record in digital transformation. Artificial intelligence plays a central role in CI&T’s ongoing work. Important notice: Residents of the Campinas Metropolitan Region must attend the office according to the current attendance policy. Role overview This mid-level Fullstack Developer position focuses on supporting a major automotive client. The role is part of the N3 Support team, addressing bug fixes and implementing improvements for web applications. What you will do Work within the N3 Support team to resolve bugs and enhance web applications. Develop and refine user interfaces using Angular. Create backend services with Java. Collaborate with cross-functional teams to proactively solve issues. Communicate directly with clients and team members to clarify requirements and deliver effective solutions. Participate in planning and review meetings using agile methodologies such as SCRUM and KANBAN. Requirements Experience developing backend solutions with Java. Knowledge of object-oriented programming and SOLID principles. Background in unit testing and code quality tools (Sonar). Experience working with SQL databases. Familiarity with queue services such as Kafka or RabbitMQ. Experience using Angular for frontend development. Understanding of agile methodologies, including SCRUM and KANBAN. Practice with GitHub and version control. Knowledge of Google Cloud Platform (GCP) is a plus. Preferred experience Previous experience on support teams.

Apr 27, 2026

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Mid-level Fullstack Developer (.NET & Angular) - Brazil

CI&T

Full-time|Hybrid|Brazil

CI&T seeks a Mid-level Fullstack Developer (.NET & Angular) based in Brazil. This position supports a contract management project for a client in the financial sector. The team values proactive and resilient contributors who can handle daily challenges and help drive project outcomes. Note: Candidates living in the Metropolitan Region of Campinas must follow the company's current in-office attendance policy. Role overview This role centers on developing and maintaining contract management applications. The work involves collaborating with a team to deliver solutions that align with client requirements. Key responsibilities Develop applications using .NET and Angular Apply practical knowledge of AWS services Work within agile development frameworks Technologies used .NET Core / .NET: Build and maintain applications with recent .NET versions Angular: Create dynamic, responsive user interfaces AWS: Use services like RDS, DynamoDB, Lambda, and SQS RESTful APIs: Build and consume APIs Relational Databases: Work with database operations Git: Manage code using version control Microservices: Apply knowledge of microservices architecture

Apr 28, 2026

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Senior Fullstack Java/Node and React Developer

CI&T

Full-time|On-site|Brazil

At CI&T, we specialize in technological transformation, combining human expertise with AI to develop scalable tech solutions. With over 8,000 CI&Ters worldwide, we have partnered with more than 1,000 clients throughout our 30-year history. AI is at the core of our reality.Note: If you reside in the Metropolitan Region of Campinas, it will be mandatory to be present in our offices in the city, as per the current attendance policy.Hi, this is Bia from CI&T! I am a Talent Attraction Analyst looking for individuals located in Brazil to work as a Senior Fullstack Developer on one of CI&T's projects.Responsibilities/RequirementsWhile our focus is primarily on back-end development, we require a full-stack developer to assist with front-end tasks as needed.Develop and maintain web applications using Node.js and React.Work with back-end services in Go, Kotlin, Java, or Python.Implement and manage containers using Docker.Orchestrate services in Kubernetes environments.Contribute to the creation and maintenance of CI/CD pipelines.Utilize PostgreSQL databases for data storage, manipulation, and troubleshooting.Implement observability practices using Datadog.Integrate messaging systems like Kafka and S3 for service communication.Collaborate with cross-functional teams to define, design, and deliver new functionalities.Explore and implement AI-based coding solutions to optimize processes and development, familiar with tools such as Cursor, Claude Code, Copilot, or Winsurf.Knowledge of and experience with AWS, such as S3.#LI-BA1

Mar 16, 2026

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Senior AI Systems Engineer – Material Intelligence

netzschgroup

Full-time|On-site|Florianóplis

Join our innovative team at netzschgroup as a Senior AI Systems Engineer specializing in Material Intelligence. This role will challenge you to develop advanced algorithms and systems that leverage artificial intelligence to enhance material processing and analysis. You will collaborate with cross-functional teams to create solutions that drive efficiency and innovation in our products.

Apr 7, 2026

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Strategy Consultant - AI Training & Evaluation (MBB & Top-Tier Firms)

Toloka AI

Full-time|Remote|Remote — Belo Horizonte, State of Minas Gerais, Brazil

Toloka AI is at the forefront of enhancing model performance post-training by developing domain-specific reinforcement learning environments, tasks, and evaluation frameworks crafted by experienced professionals.Mindrift, driven by Toloka—a premier enterprise AI and machine learning data partner since 2014—bridges the gap between top-tier domain experts and innovative AI initiatives. Leveraging Toloka’s extensive knowledge in scalable data generation, crowd technology, and applied machine learning systems, Mindrift empowers experts to influence the learning, reasoning, and performance of next-generation generative models.We are initiating a Management Consulting domain dedicated to transforming real-world consulting practices into structured learning environments for advanced AI systems. To accomplish this effectively, we are forming a team of strategy consultants from elite firms who can translate genuine project experiences into comprehensive examples—from problem structuring and planning to analysis, synthesis, and client-ready recommendations.You will become part of a dynamic team of consultants from renowned strategy firms, helping to redefine how AI understands high-level business reasoning.Important: This position is exclusively for consultants with direct experience at a top-tier strategy consulting firm. If you lack hands-on project experience at one of the firms listed below, please refrain from applying. This criterion ensures the domain is developed by practitioners trained to the utmost standards of structured problem-solving and client delivery.Eligible firms: McKinsey & Company, Boston Consulting Group (BCG), Bain & Company, Oliver Wyman, Roland Berger, Monitor Deloitte (Deloitte S&C), EY-Parthenon, Kearney, and Strategy& (PwC).

May 4, 2026

Senior Fullstack Java/Node and React Developer

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