Empresa: CI&T
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. We are looking for a Senior Full-stack Engineer to help evolve a web application, build reliable enterprise integrations, and scale document processing capabilities. In this role, you will work across front-end and back-end development, translating design specifications into high-quality user experiences while developing versioned APIs and scalable processing workflows. You will contribute to integrations with enterprise platforms such as SAP S/4HANA and Ivalua, helping deliver robust and maintainable solutions. Responsibilities • Rebuild and enhance the web application based on the Design team's mockups, using Next.js, React, and TypeScript . • Develop user-facing features, including PDF grounding views that help users review and validate information extracted from documents. • Design, develop, and maintain versioned APIs using Python and Django REST Framework . • Build and maintain integrations between Pegasus, SAP S/4HANA, and Ivalua , ensuring reliable data exchange across systems. • Scale asynchronous batch processing with Celery to support workloads involving up to 10,000 PDF documents. • Work with PostgreSQL to support application data management and persistence. • Implement user metrics to provide insights into application usage and support data-driven improvements. • Ensure application quality through automated testing, code reviews, documentation, and engineering best practices. • Identify and resolve performance bottlenecks across the application, APIs, integrations, and background processing workflows. • Collaborate with design, product, and engineering teams to deliver scalable solutions aligned with business needs. Requirements for this challenge • Strong professional experience in full-stack software development. • Hands-on experience with Next.js, React, and TypeScript . • Strong proficiency in Python and experience developing APIs with Django REST Framework. • Solid knowledge of PostgreSQL , including data modeling and database interactions. • Experience building and maintaining RESTful APIs and integrating external enterprise systems. • Experience with asynchronous task processing and background jobs, particularly Celery . • Understanding of scalable application architecture, performance optimization, and reliable data processing. • Experience translating design mockups into responsive, user-friendly interfaces. • Knowledge of software testing, version control, code reviews, and maintainable coding practices. • Strong analytical and problem-solving skills. • Ability to collaborate effectively with cross-functional teams and take ownership of technical solutions. Nice to Have • Experience integrating with SAP S/4HANA and procurement or enterprise platforms such as Ivalua. • Experience processing large volumes of documents, particularly PDFs. • Familiarity with document preview, annotation, grounding, or validation interfaces. • Experience implementing product analytics, user metrics, and usage tracking. • Knowledge of cloud-based deployments, CI/CD pipelines, and application observability. • Experience improving the performance and reliability of distributed processing workflows. #LI-GP1 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.