**What are we looking for?** Senior Java Developer **Main responsibilities:** Design, develop, and enhance software components and applications—from prototyping through implementation—with a focus on performance and new features. Become a subject-matter expert on our POS systems, capable of explaining and improving complex codebases and assisting in solving complex problems. Assume a leadership role in architectural direction to scale technology and processes at high volume and quality. Work closely with stakeholders across multiple internal teams to help balance delivery speed and quality. Mentor and train junior developers to maximize team velocity. Act as a developer within an agile team, collaborating with the Product Owner, Scrum Master, and other developers to review and refine requirements, specifications, and test plans. **Requirements:** Senior backend developers with experience in NodeJS. Responsibilities * Develop solutions using best practices and following CCS’s System Development Methodology (MDS). * Develop systems according to specifications provided by the systems analyst to meet targeted business needs. * Monitor system features/fixes deployed in production and pre-production environments. * Honor commitments regarding system delivery deadlines, ensuring quality and performance. * Conduct technical analysis of business and technical evolution requests jointly with the systems analyst, UI/UX team, and business PO. * Contribute to the development and maintenance of consistent, scalable architectures and systems prepared for future evolution. * Guarantee the quality of software developed by CCS. * Create and keep system technical documentation up to date. * Draft preliminary System Architecture Documents and establish base system structures. * Mentor the team to ensure the quality of CCS’s system development process. Knowledge: * System development and deployment processes using CI/CD pipelines * Agile methodology * Programming languages (Java, NodeJS) * Software architecture * System testing and quality assurance (unit tests and integration tests) * Containers (Docker) and Microservices architecture * Software versioning and GitFlow * Relational databases and SQL language * Non-relational databases * Knowledge of design patterns (MVVM, MVP, MVC, etc.) * Knowledge of design patterns (Design Patterns) * Database modeling (DML and DDL) * Clean Code and refactoring * Object-oriented programming * Functional programming * Reactive programming * Application servers and web servers * RESTful architectural principles * Configuration of automated CI/CD pipelines (Jenkins, Sonar, etc.) * Messaging systems (IBM MQ, Kafka, RabbitMQ, etc.) Analyze the vast array of data generated by Pix functionalities, identifying patterns, trends, and behavioral deviations. * Develop and maintain monitoring dashboards and alerts to support decision-making and risk prevention. * Directly manage Pix regulatory indicators (ANs, IGAM, IGAT, timeout index), ensuring compliance with the Pix Timing Manual and other BACEN regulations. * Support the creation of predictive models and advanced analytics for anomaly detection and operational improvements. * Collaborate with business areas and technical teams to transform data into strategic insights. * Explore and apply generative Artificial Intelligence in use cases focused on data analysis, report generation, and process automation. * Participate in software development projects oriented toward data and monitoring. Data Analysis and BI: Advanced SQL, Python/R, ETL tools, and experience with PowerBI, Tableau or equivalent. * Statistical modeling and Machine Learning: anomaly detection techniques, time series analysis, and predictive modeling. * Generative Artificial Intelligence: knowledge of Large Language Models (LLMs), applications in data analysis, report generation, and insight automation. * Data Engineering: handling large volumes of data, pipelines, APIs, and integration with transactional systems. * Software Development: solid programming fundamentals (Python, Java or another relevant language), Git version control, testing practices, and engineering best practices. * Pix Regulation: familiarity with BACEN manuals and regulations, focusing on regulatory indicators (ANs, IGAM, IGAT, timeout, etc.). * Architecture and Monitoring: experience in high-availability environments, performance metrics, and integration with observability tools. Desirable: Experience in the financial sector or payment methods. * Experience with agile methodologies (Scrum/Kanban). * Knowledge of information security practices and LGPD as applied to data processing. **Location of the position:** Remote **Why build your career at Meta?** We offer autonomy, clear goals, and a dynamic and challenging environment where professionals have the opportunity to interact with diverse technologies, participate in all types of projects, bring new ideas, and work from anywhere in Brazil—and why not?—the world. Additionally, we are one of the best companies to work for in Brazil, according to Great Place to Work, and one of the 10 fastest-growing companies in the country for three consecutive years, according to the Informática Hoje Yearbook. **What are our values?** * We are people serving people * We think and act like owners * We have a drive for performance * We grow and learn together * We pursue excellence and simplicity * Innovation and creativity are in our DNA All individuals are welcome regardless of their condition, disability, ethnicity, religious belief, sexual orientation, appearance, age, or related factors. We want you to grow with us in a welcoming environment full of opportunities. Do you identify with this? Then, \#JoinMeta!