Mid-Level Fullstack Developer - Java/Node.js Focus

Description

Job Summary: We are seeking a Mid-Level Fullstack Developer to participate in the full application lifecycle, focusing on continuous evolution of digital platforms while ensuring consistent and innovative deliveries. Key Highlights: 1. Participation in strategic technological expansion projects 2. Development of scalable, secure, and high-performance solutions 3. Collaboration with cross-functional teams to deliver new features **We are looking for someone who dares to co-lead with us.** **Responsibilities and Duties:** The role is part of a strategic technological expansion initiative focused on the continuous evolution of digital platforms serving millions of users. The project involves both maintenance and development of new features, balancing performance, technical quality, and innovation. The Mid-Level Fullstack Developer will be responsible for participating in the entire application lifecycle—from conception to delivery—collaborating directly with product and engineering teams to ensure consistent, sustainable deliveries aligned with best practices in architecture and development. Key responsibilities include: * Collaborating with cross-functional teams to define, design, and launch new features; * Performing technical refinements on requirements provided by the product team; * Ensuring codebase health and quality, balancing evolution and technical debt mitigation; * Developing scalable, secure, and high-performance solutions; * Critically engaging in monitoring and observability; * Creating and maintaining automated tests to contribute to system stability; * Supporting junior developers with best practices and technical guidance; * Authoring technical documentation and participating in agile ceremonies with the team. **Requirements and Qualifications:** * Experience with Java 17\+, Spring Boot, and Hibernate; * Experience with NodeJS and NestJS; * Proficiency in SQL and NoSQL databases (Oracle, MongoDB, RDS); * Knowledge of messaging systems (RabbitMQ and SQS); * Experience with microservices architecture; * Proficiency in designing and consuming REST APIs; * Experience with unit testing (JUnit 5\) and contract testing (Pact); * Experience with Axway API Gateway, Git, and source code versioning; * Experience with Dynatrace and observability tools; * Knowledge of Clean Code, Clean Architecture, and modularization; * Best practices in documentation, versioning, and continuous delivery; * Experience working in agile methodologies (Scrum/Kanban); * Ability to analyze and solve complex problems; * Minimum 3 years of experience in technically complex projects and processes. **Desirable:** * Experience with React Native and React; * Knowledge of JavaScript/TypeScript, Next.js, React Hooks, Styled Components, and Axios; * Experience with Microfrontend (MFE) architecture. Language: Technical English is a plus. **Additional Information:** * For your health, we offer **comprehensive medical and dental coverage**, with no copayments for exams or consultations. * Want more well-being? We provide **Gympass** and **Zenklub** (with two free sessions per month) to support your physical and mental health. * When hunger strikes, use our meal benefit **Caju** to shop at any supermarket or restaurant. * Love to travel? We offer **Férias & Co**, a benefit that helps you realize your dream vacation. * Have children? We provide **childcare assistance**. * Growing family? We offer **MomCare**, a flexible monetary incentive post-maternity leave for new Datunian mothers. * To personalize your workspace, we provide **home office allowance**. * Want to invest in your professional development? We partner with renowned educational institutions to offer discounts of up to 70% on **undergraduate**, **postgraduate**, **MBA**, **language**, and many other courses! **To learn about all our benefits, visit the homepage of our careers page.**