At CI&T, we help large enterprises transform the potential of AI into real business impact with AI Deployment, AI-native execution, and tech-integrated business solutions. With 30 years of experience in technological transformation, we accelerate innovation with expertise in Agentic SDLC, Application modernization, Data & AI, Martech and Business strategy. We are 8,000 CI&Ters across more than 25 countries, collaborating to build solutions with real impact. AI is already part of how we work, evolve, and innovate every day. About the Role As a Senior Software Engineer (Back-End), you will work as a specialist, taking ownership of complex software solutions and architectural decisions. You will be responsible for designing, developing, and delivering high-quality, scalable back-end systems. In this role, you’ll participate in shaping the technical strategy, lead the implementation of critical services, and bridge the gap between engineering execution and business objectives—all while maintaining strong collaboration with clients and stakeholders.   Key Responsibilities Technical Leadership & Engineering Excellence Lead the design and implementation of back-end features with strong focus on performance, scalability, and reliability. Contribute to architectural decisions and provide input on technical strategy and direction. Define and uphold coding standards, best practices, and testing strategies within the team. Conduct code reviews and promote a culture of continuous improvement. Troubleshoot and resolve complex technical challenges with innovative solutions. Drive performance optimization and ensure systems are scalable and secure. Stay current with industry trends and assess new technologies for adoption. Lead proof-of-concept development and technical risk assessments for new initiatives.    Project Execution & Delivery Take ownership of complex back-end deliverables and ensure timely, high-quality results. Provide technical estimations and input for sprint planning and milestones. Collaborate effectively with front-end, QA, and DevOps teams to deliver integrated solutions. Participate in agile ceremonies and ensure technical considerations are represented. Support deployment and release management with robust validation and testing. Manage technical debt while maintaining sustainable delivery pace.   Client & Stakeholder Engagement Participate in technical discussions with clients to gather requirements and propose solutions. Prepare and maintain clear technical documentation and design specifications. Support pre-sales initiatives through technical expertise, demos, and consultations. Translate business requirements into scalable, maintainable back-end implementations. Provide feasibility assessments and input on timelines and resource needs. Maintain professional client relationships and contribute to long-term satisfaction through technical excellence.     Business Adaptability & Professional Growth Demonstrate Leadership: Take initiative on technical challenges and mentor peers effectively. Foster Adaptability: Transition smoothly between technologies and projects as business needs evolve. Commit to Quality: Prioritize maintainability, security, and comprehensive testing. Communicate Effectively: Explain complex technical concepts clearly to both technical and non-technical stakeholders. Maintain open lines of communication with all parties involved, ensuring that stakeholders and team members are kept informed of progress throughout the development process.   Qualifications & Experience 7+ years of extensive experience in back-end development. Deep expertise in Spring Boot (Java and/or Kotlin). Strong knowledge of database technologies; query optimization and schema design Hands-on experience with Cloud Services Azure or AWS(compute, storage, networking, managed databases). Proven experience designing and implementing microservices architectures and RESTful APIs. Proficiency in containerization (Docker), orchestration (Kubernetes), serverless architectures, and CI/CD pipeline development. Strong understanding of security best practices, performance optimization, and system reliability. Demonstrated experience in leading technical projects and mentoring teams. Excellent English communication skills and experience working in agile, cross-functional teams. Relevant certifications (e.g., AWS, Java, or cloud architecture) are a plus. If you like it, just apply and good luck! #LI-JM2 Our benefits:   -Health and dental insurance -Meal and food allowance -Childcare assistance -Extended paternity leave -Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass; -Profit Sharing and Results Participation (PLR); -Life insurance -Continuous learning platform (CI&T University); -Discount club -Free online platform dedicated to physical, mental, and overall well-being -Pregnancy and responsible parenting course -Partnerships with online learning platforms -Language learning platform And many more!   More details about our benefits here: https://ciandt.com/br/pt-br/carreiras   At CI&T, inclusion starts at the first contact. If you are a person with a disability, it is important to present your assessment during the selection process. See which data needs to be included in the report by clicking here.This way, we can ensure the support and accommodations that you deserve. If you do not yet have the assessment, don't worry: we can support you in obtaining it.   We have a dedicated Health and Well-being team, inclusion specialists, and affinity groups who will be with you at every stage. Count on us to make this journey side by side.