Job Summary: We are seeking a Mid-Level Java Developer to work on backend solution development and maintenance, actively contributing to system evolution within a dynamic and challenging environment. Key Highlights: 1. Backend solution development and maintenance 2. Active participation in system evolution 3. Dynamic and challenging environment At NIO, we believe technology connects people and transforms the future. We are an innovative company focused on excellence, operating with a dynamic and collaborative culture. Our team works autonomously, passionately, and committedly, always pursuing the best results. We seek a Mid-Level Java Developer to work on backend solution development and maintenance using Java and Spring Boot, actively participating in system evolution, supported technically by more experienced professionals and engaging directly with business rules. The candidate will have the opportunity to work in a dynamic and challenging environment, contributing to building innovative, high-impact solutions for the company. They will be part of an engaged team that values collaboration, continuous learning, and technical excellence. **Responsibilities and Duties** * Develop and maintain backend applications in Java and Spring Boot. * Implement and evolve REST APIs. * Work with databases, performing queries, adjustments, and modeling. * Ensure bug fixes and support incident analysis, guaranteeing application performance. * Participate in code reviews and technical refinements, contributing to continuous code improvement. **Requirements and Qualifications** * Practical experience with Java (8\+) and solid knowledge of Spring Boot (Spring MVC, Spring Data). * Experience developing REST APIs and relational databases (PostgreSQL, MySQL, Oracle), with JPA / Hibernate. * Familiarity with source code versioning (Git), basic knowledge of automated testing (JUnit), and Spring Security. * Willingness to learn and grow technically, with strong communication skills and teamwork orientation. * Organization and commitment to deliverables, ability to receive and apply technical feedback. * Bachelor’s degree in Computer Science, Software Engineering, or related fields. **Additional Information** Benefits: * Meal Allowance and/or Food Voucher * Transportation Voucher * Health Insurance * Dental Insurance * Life Insurance * Private Pension Plan * Profit Sharing Program (PPR) * Pharmacy Allowance * Childcare Allowance * Flexible Working Hours * V.tal Benefits Club * Extended Maternity Leave (6 months) * Extended Paternity Leave (20 days) **THE FUTURE STARTS HERE — AND WE’LL BUILD IT TOGETHER WITH YOU** ---------------------------------------------------------------- **We are V.tal, a company born with the purpose of enabling digital connection and transforming people’s lives.** We work to help position Brazil among the world’s most digitally advanced countries, promoting digital inclusion, driving new businesses, and stimulating regional development. This is possible because we launched with Brazil’s largest fiber-optic network and a team that makes things happen. We are a neutral, shared network, collaborating with operators, ISPs, and partners of all sizes and regions. This fills us with pride. Our robust infrastructure enables us to offer broad coverage and reach, helping our clients go further while optimizing their investments. **OUR TEAM** We are connected, agile, and driven by outstanding results. Our workplace is light-hearted because it is composed of people who collaborate, trust each other, and celebrate every achievement. Here, we don’t make excuses—we find solutions. With this high-performance team, we work daily to position Brazil among the world’s most digitally advanced countries, promoting digital inclusion and economic and social development for people. **DISCOVER OUR CORE PRINCIPLES** **We play fair and trust each other.** **Continuous evolution and learning is our mantra. Without learning, there is no evolution.** **We are obsessed with excellence and high performance. Pursuing results happens daily in every decision.** **Work hard, play hard! We are focused and maintain a healthy work environment.** **DO YOU IDENTIFY WITH OUR PROPOSAL? THEN JOIN US TODAY TO BUILD THE FUTURE!** Do you remember that internet connection that simply works—connecting you to what truly matters, without unpleasant surprises? We know the telecommunications market needs to change—and we’re here to make it happen. We are **Nio**, a technology company offering fiber-optic internet solutions for homes and businesses across Brazil. Already serving **approximately 4 million customers**, and this is only the beginning. **Why does Nio exist?** **Our mission:** To accelerate the evolution of people and companies through technology. **Our essence:** We look at people—and look ahead. Because we believe innovation only makes sense when it improves people’s lives. And this applies not only to our customers but also to those who make it all happen: **the people who work here.** **Working at Nio means…** Being part of a company that puts the customer at the center of everything. Having autonomy and room to grow. Working alongside people who believe in what they do. Building something new in a collaborative, energetic environment. **We’re just getting started—and you can be part of this transformation. Join Nio and help create Brazil’s new digital era!**