**Requirements:** Advanced proficiency in at least one backend language (Node.js, Java, C#, Python, etc.); Experience with DATADDO Solid experience with web frameworks such as NestJS, Spring Boot, or .NET Core; In-depth knowledge of data modeling, SQL, and relational databases (PostgreSQL, MySQL); Solid experience with NoSQL databases (MongoDB, Redis, etc.); Familiarity with microservices architecture, messaging, and queues (e.g., RabbitMQ, Kafka); Understanding of API security (authentication, authorization, validation, etc.); Solid experience with version control tools, CI/CD, and Dockerized environments; Ability to mentor junior developers and contribute technically to the team. **Hard Skills:** Node.js, NestJS (or similar); Relational and NoSQL databases; Microservices architecture; CI/CD, Docker, Git; Automated testing. **Soft Skills:** Technical communication; Proactivity; Mentoring ability; Collaboration with cross-functional teams. **Desirable Certifications:** Certifications in backend development, software architecture, or cloud computing. **Differentiators:** Proficiency in multiple programming languages and paradigms; Experience with GraphQL, WebSockets, or event-driven architecture; Active participation in large-scale or high-volume data projects; Contributions to technical communities, open source, or internal initiatives. * **Our benefits:** * **Medical allowance**: monthly financial support to help cover your health insurance plan. * **Wellhub**, to keep your body and mind active—your way. * **Online therapy**, fully covered by the company, because mental health matters. * **Online nutrition counseling**, with up to 2 monthly consultations to support your dietary health. * **Life insurance** with a policy value of R$125,000, providing greater security for you and your family. * **Birthday day off**, because your day deserves to be special. * **Paid time off**, so you can recharge your energy. * **Internal gamification**, turning achievements into rewards and recognition. * **Educational partnerships** **with universities**, such as FIAP, Anhanguera, and Instituto Infnet, to support your growth and learning. * **Technical certification bonus**, recognizing and rewarding your effort to learn. ***We value every voice and every person, because we know diversity makes us more innovative and stronger.***