Job Summary: We are seeking a Senior Fullstack Developer to build, evolve, and sustain microservices-based applications with strong system integration and messaging capabilities. Key Highlights: 1. Strategic involvement in defining technical solutions 2. Develop, evolve, and maintain Fullstack applications (Node.js/React) 3. Contribute to architectural decisions and continuous platform evolution São Paulo, SP Senior We seek a Senior Fullstack Developer with solid experience in modern software architecture, backend development in Node.js, and frontend development in React, to build, evolve, and sustain microservices-based applications with strong inter-system integration and messaging. This professional will play a strategic role in defining technical solutions, engaging from business requirement analysis through implementation and production environment support—ensuring quality, scalability, security, and performance. Responsibilities: ✔ Analyze and understand functional requirements and business rules, translating them into robust technical solutions. ✔ Develop, evolve, and maintain Fullstack applications using Node.js (backend) and React (frontend). ✔ Design, implement, and maintain RESTful and/or event-driven APIs. ✔ Participate in defining and implementing a microservices-based architecture, ensuring proper orchestration and inter-service communication. ✔ Implement integrations between internal and external systems using messaging (RabbitMQ and Kafka). ✔ Develop modern, high-performance, and responsive user interfaces, ensuring correct integration with backend services. ✔ Model, query, and optimize relational (PostgreSQL) and non-relational databases. ✔ Identify complex issues, perform technical analysis, and conduct root cause investigation. ✔ Work with containerization using Docker and orchestration with Kubernetes. ✔ Operate in Cloud Computing environments, adhering to best practices in architecture and security. ✔ Implement and maintain CI/CD pipelines, ensuring quality and automation across build, testing, and deployment processes. ✔ Actively participate in Agile ceremonies (Planning, Daily, Review, and Retrospective). ✔ Conduct code reviews and contribute to disseminating development best practices. ✔ Utilize GenAI tools (e.g., GitHub Copilot, Cursor, etc.) to enhance productivity and technical quality. ✔ Contribute to architectural decisions and continuous platform evolution. Requirements: ✔ Ability to absorb functional rules and business requirements ✔ Analytical mindset for problem-solving and root cause identification ✔ More than 6 years of experience in software development ✔ Knowledge of relational and non-relational databases ✔ Knowledge of system integration ✔ Experience with microservices, orchestration, and event-driven architecture ✔ Backend development experience with Node.js ✔ Frontend development experience with React ✔ API development experience ✔ Backend–Frontend integration experience ✔ Cloud computing experience ✔ Knowledge of Docker and Kubernetes containers ✔ Knowledge of PostgreSQL ✔ Knowledge of RabbitMQ and Kafka ✔ Knowledge of CI/CD workflows ✔ Agile methodology experience Preferred Qualifications: ✔ Financial industry knowledge ✔ Google Cloud Platform (GCP) knowledge ✔ Degree in Software Engineering, Computer Science, Systems Analysis, or related fields ✔ Prior experience in projects involving GenAI What you’ll find at Maitha: EDI (Individual Development Experience): soft skills development with guidance throughout your journey; Well-being Management: metrics and indicators tracking Maither satisfaction progress; Pulse Academy: hard skills monitoring and enhancement; Pulse Advancement Nucleus: exclusive trainings, workshops, and meetups; Rewards: points and rewards program; TotalPass: over 250 modalities including weight training, cross-training, yoga, dance, and more; And much more! Work model: Hybrid – 3 days per week in the Paulista region