Senior Node.js Backend Developer

Role Overview anyone-ai is hiring a Backend Developer - AI Trainer for a fully remote role based in Mexico. This position focuses on developing and training AI systems, with a goal of improving their performance and reliability. What You Will Do Develop backend components that support AI technologies Train and refine AI systems to enhance efficiency and effectiveness Collaborate with team members to shape AI solutions Location This is a fully remote position open to candidates based in Mexico.

Anyone AI is looking for Backend Developers to support projects for a leading AI laboratory. This fully remote position is open to candidates based in Mexico. The role centers on building and improving software tasks that drive AI research and development. What you will do Design and implement coding tasks that span multiple files, including fixing bugs, developing new features, refactoring existing code, and writing tests. Draft clear natural-language specifications and provide reference implementations to guide development. Develop and improve both unit and integration test suites to ensure software reliability. Review peer-generated tasks for accuracy, clarity, and practical relevance. Spot edge cases, ambiguities, and possible failure points in tasks and code. Make sure that specifications, code, and expected results remain consistent throughout the project. Engagement details This is a part-time, project-based consulting role. Contributors create and evaluate realistic software engineering tasks, such as resolving bugs and implementing features. Compensation is provided per project. The position offers flexible scheduling and allows for work with multiple clients.

Design, develop, and maintain backend solutions that are efficient, scalable, and secure.Implement and document APIs, services, and related backend processes.Manage databases and optimize queries or structures to enhance performance.Contribute to the definition of architectures and propose technological solutions.Provide support and resolve technical incidents related to backend functionalities.Collaborate with frontend, QA, infrastructure, and business teams to ensure high-quality products.Adhere to established development, security, and documentation standards.

Role overview Anyone AI seeks experienced software engineers based in Mexico for a remote, part-time consultancy. As an AI Software Engineering Trainer, the focus is on designing and evaluating realistic coding challenges for a major AI laboratory. This position centers on technical content creation and peer review rather than classroom instruction. What you will do Create complex, multi-file coding tasks that involve bug fixes, adding new features, refactoring, and generating tests. Write clear specifications and provide reference implementations to guide learners. Develop and refine unit and integration test suites to ensure code quality. Review tasks created by peers, checking for clarity, accuracy, and completeness. Identify edge cases, ambiguities, and possible failure points in assignments. Verify that specifications, code, and expected outputs remain consistent and correct. Requirements Exceptional written English communication. 3 to 7 years of hands-on software engineering experience. Strong expertise in Python and JavaScript or TypeScript. Familiarity with Java, C#, or Go is an advantage. Background in backend or full-stack development for production systems. Experience with testing frameworks such as pytest, Jest, JUnit, xUnit, or Go testing tools. Strong debugging skills and comfort managing large, multi-file codebases. Experience with code reviews, refactoring, and production migrations. Engagement details Part-time, project-based consultancy focused on expert-level evaluations. Fully remote role within Mexico. Expected outcomes Deliver high-quality, production-ready software engineering tasks that align with project requirements.

Join Inetum, a leading company in digital transformation, as a Backend Developer. In this role, you will be responsible for designing and implementing robust backend systems that power our innovative applications. You will collaborate with frontend developers and product managers to create seamless and efficient user experiences.

gsbsolutions1 is seeking a Backend Tandem Developer based in Ciudad de México, Mexico. This position centers on connecting business logic from the NonStop/Tandem platform to modern web services. Role overview The main focus is to build and maintain integrations that expose existing business logic through SOAP and REST APIs. The work involves updating and supporting legacy modules written in COBOL, C, and Java. Ensuring these systems remain available, scalable, and secure is a key part of the job, supporting both internal teams and external partners. Key responsibilities Develop and maintain integrations for NonStop/Tandem systems Expose business logic via SOAP and REST web services Update and support legacy modules in COBOL, C, and Java Help keep systems reliable, scalable, and secure

gsbsolutions1 is expanding its presence in Latin America and is seeking a Senior Backend Developer to join the team in Tránsito, Ciudad de México. This role centers on building and scaling backend systems to support the company’s next phase of growth. Key responsibilities Design and implement backend solutions using JAVA (JDK 11+), Spring Boot, Spring Security, and Hibernate/JPA. Define and maintain clean software architectures, including microservices, event-driven, and hexagonal patterns. Integrate with SQL databases (PostgreSQL, MySQL) and NoSQL databases (MongoDB, Redis, Cassandra), as well as external APIs and services. Develop RESTful APIs and work with GraphQL when required. Collaborate with Front End, DevOps, and QA teams to deliver integrated products. Optimize system performance and resolve bottlenecks. Mentor junior and mid-level developers through code reviews and pair programming. Implement unit and integration tests using JUnit and Mockito to ensure code quality. Apply security standards, including OWASP guidelines, authentication, JWT, and OAuth2. Automate deployments with CI/CD tools such as Jenkins and GitHub Actions. Work with cloud platforms (AWS, Azure, or GCP) and containerization tools like Docker and Kubernetes. Document technical designs, decisions, and processes for team knowledge sharing. Requirements Bachelor's degree in Computer Science, Software Engineering, Systems Engineering, or a related field. At least 5 years of backend development experience with JAVA. Proficiency with Agile methodologies. Experience working with messaging and event systems such as Kafka, RabbitMQ, or AWS SQS. Strong skills in version control using Git (GitHub or GitLab). Solid understanding of best practices, including Sonar, Checkmarks, Fortify, SOLID principles, and clean code. Intermediate to advanced English for technical reading and writing. Strong collaboration skills and a team-oriented approach.

gsbsolutions1, a technology company based in Ciudad de México, is expanding its team and seeking a Senior Backend Node.js Developer. This position focuses on building and maintaining server-side applications to support the company’s growth in Latin America. What you will do Design and develop server-side applications using Node.js and related frameworks. Write code in JavaScript, TypeScript, or Python with attention to clarity and maintainability. Apply established web application architecture principles and design patterns. Use Git and other version control tools to manage codebases and collaborate on projects. Identify and resolve technical issues as they arise. Collaborate with colleagues from other teams to enhance the web technology stack. Assist with front-end tasks involving CSS3 and HTML5 when required. Location This role is based in CDMX, Ciudad de México, Mexico.

Position: Senior Java Backend DeveloperLocation: Remote (Mexico)Experience: 7+ yearsJob Type: Full-timeJob ID: 19519 Role overview This position focuses on building and maintaining backend systems using Java, with a strong emphasis on Kubernetes. The Senior Java Backend Developer will work closely with teams based in Europe, Canada, and the United States, contributing to projects that require effective collaboration across time zones and cultures. What you will do Design, develop, and deploy scalable backend services in both cloud-native and on-premise environments. Manage and optimize containerized applications using Kubernetes. Ensure backend systems are resilient and reliable for global clients. Work with international development teams to deliver high-quality solutions. Requirements At least 7 years of backend development experience. Strong expertise in Java and Kubernetes. Ability to collaborate with global teams. Experience with both cloud-native and on-premise deployments.

Join our dynamic team at Lingarogroup as a Backend Developer! We are on the lookout for a talented Software Engineer with robust backend skills and experience in cloud technologies to build and maintain scalable applications on the Google Cloud Platform. Ideal candidates will be adept at utilizing modern backend frameworks and may also have frontend development exposure.Key Responsibilities:• Design, develop, and support cloud-native applications leveraging Google Cloud Platform services such as Cloud Run, Cloud SQL, GCS Buckets, and more.• Create and maintain strong backend services using Python, FastAPI, Pydantic, and SQLAlchemy.• Manage PostgreSQL databases to ensure optimal performance, reliability, and maintainability.• Employ Docker for application containerization and set up CI/CD workflows using GitHub Actions.• Collaborate effectively in a GitHub-based workflow, engaging in version control, pull requests, and code reviews.• Optionally, contribute to frontend development using TypeScript, Next.js, TailwindCSS, and Node.js.Nice to Have:• Familiarity with Celery or background job processing.• Experience with Databricks or data engineering/analytics platforms.• Knowledge of modern frontend frameworks and full-stack development.• A strong DevOps mindset and understanding of cloud infrastructure best practices.We value practical engineers who take ownership, communicate effectively, and deliver reliable, production-ready solutions.

Location: Remote in MexicoEmployment type: Full-time Role overview Encora is looking for a Senior Java Backend Developer to build and improve scalable backend systems. This position focuses on delivering high-performance solutions and collaborating with cross-functional teams throughout the agile development process. Deep experience with Java, web services, and cloud technologies is essential. What you will do Analyze requirements from the Product team to design backend solutions that emphasize availability, performance, and scalability. Evaluate different design options and document detailed specifications for the chosen approach. Implement solutions from start to finish, including coding and testing, while meeting quality and performance standards. Requirements 5+ years of software development experience with Java

Role overview Valtech seeks a Senior AEM Backend Developer to join its remote team in Mexico. The role centers on building and maintaining backend solutions with Adobe Experience Manager (AEM), supporting smooth digital experiences for clients and users. What you will do Design, build, and implement components and templates in AEM Develop backend features aimed at strong performance and scalability Collaborate with colleagues from other disciplines to deliver reliable digital solutions Location This position is remote and open to candidates based in Mexico.

Join our dynamic team at inetum2 as a Backend Developer. In this role, you will be responsible for developing and maintaining robust backend systems that power our innovative applications. You will collaborate with cross-functional teams to deliver high-quality software solutions that meet business requirements and enhance user experiences.

Toloka Annotators connects people around the world with generative AI projects by inviting real individuals to contribute to AI development. This freelance, remote role is open to candidates in Tijuana, Baja California, Mexico and worldwide. Role overview This position focuses on capturing high-quality, first-person video recordings of everyday household activities. If daily chores like washing dishes, vacuuming, walking the dog, or folding laundry are part of your routine, this role lets you earn money by documenting these tasks. The videos you create will help train the next generation of AI systems to better understand human actions in real-life settings. What you will do Data collection: Record hands-on, manipulation-heavy tasks in different home environments. Residential tasks: Document common household activities such as tidying rooms, cleaning dishes, doing laundry, and mapping home layouts. Adherence to specifications: Follow detailed instructions for video capture, focusing on task accuracy and ensuring a range of activities and settings in your recordings. Requirements Equipment: Access to a smartphone or camera capable of recording at 30 FPS or higher and 1080p resolution or above. Capture method: Mount the device at forehead or eye level for an egocentric perspective, with a downward angle to keep hands visible. Software: Use the specified 'D&A' application for recording and uploading your videos. Quality control: Ensure all footage is clear, stable, well-lit, at least 15 seconds long, and accurately reflects real tasks without unnecessary pauses or staged actions. Benefits Earn up to $5 per hour depending on the task, while performing household chores. Choose tasks that fit your schedule, work is project-based and freelance. Contribute directly to how AI systems learn to interpret and interact with the world.

Anyone AI seeks experienced Python developers to join projects with a prominent AI laboratory. This role is fully remote and open to professionals based anywhere in Mexico. Key responsibilities Work closely with teams to design, build, and refine AI-driven solutions Develop and maintain clean, efficient Python code for both research and production settings Support projects that push the boundaries of artificial intelligence capabilities Location This position is remote within Mexico. Candidates must reside in Mexico to be considered.

Join Arkham as a Senior Software Engineer (Backend)About ArkhamArkham Technologies is at the forefront of the Data & AI revolution, offering a sophisticated platform designed to unify data and leverage advanced Machine Learning and Generative AI models to tackle the most intricate operational challenges faced by businesses today.Our platform is trusted by industry leaders such as Circle K, Mexico Infrastructure Partners, and Televisa Editorial to facilitate seamless access to valuable data and insights, automate complex processes, and enhance operational efficiency. Through our innovative platform and implementation services, we empower our clients to save time, reduce costs, and establish a robust foundation for enduring Data and AI transformation.About the RoleWe are seeking a Senior Software Engineer with a strong backend emphasis to join our team and contribute to the design and construction of core platform services that drive Arkham’s AI Operating System. This position is perfect for engineers who thrive on challenges associated with high-performance systems, enjoy tackling complex distributed problems, and are adept at creating scalable microservices architectures that support swift and secure data and AI workflows.As a pivotal member of our team, you will be responsible for designing systems that manage substantial data processing, facilitate real-time event-driven communication, and support mission-critical AI and analytics operations for our clients. This role offers a hands-on, high-impact opportunity that combines technical expertise with product-oriented thinking.

Join Valtech, a leader in experience innovation, as a Backend Developer for our AEM Edge Delivery Services team. At Valtech, we're committed to fostering a culture of continuous learning and professional development. You'll have the opportunity to work on groundbreaking digital solutions and redefine customer experiences in an inclusive environment that values innovative thinking.

Join our dynamic team as a Yucateco Dialect Specialist for a Freelance AI Trainer Project. We are seeking an expert in the Yucateco dialect to assist in training and enhancing AI technologies. This is an exciting opportunity to contribute to innovative projects while working independently.

Are you a passionate Spanish (Mexico) language expert ready to influence the future of artificial intelligence? As large-scale language models transition from simple chatbots to sophisticated communication tools, your contribution is vital. High-quality training data is essential for AI to grasp regional language nuances, context, and tone, thus enhancing global accessibility and cultural exchange. Your expertise will lay the groundwork for the next generation of AI.We seek Spanish (Mexico) language specialists who are deeply familiar with grammar, orthography, vocabulary, idiomatic expressions, and cultural references unique to Mexico. You will engage with advanced language models, focusing on regional colloquialisms, contextual interpretation, tone adaptation, syntactic accuracy, and semantic precision—diligently documenting each failure mode to strengthen model reasoning.On a typical day, you will interact with the model in Spanish (Mexico) on an array of topics, verify linguistic accuracy, ensure cultural relevance, capture reproducible error traces, and provide valuable feedback to refine our prompt engineering and evaluation metrics.A degree in Linguistics, Translation, Spanish Language, Literature, or a related field is preferred. Professional experience in teaching, translation, localization, or editorial roles is highly advantageous. Clear and metacognitive communication—demonstrating your process—is crucial.Are you ready to transform your Spanish (Mexico) expertise into the foundational knowledge for tomorrow's AI? Apply today and begin teaching the model that will educate the world!