[Job-30841] Senior web software engineer, Brazil

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 an experienced Senior Web Software Engineer to build and deliver enterprise-grade digital solutions as part of a CMS modernization and migration initiative. This is a hands-on development role focused on modern web technologies, particularly JavaScript, TypeScript, React, and Next.js, with familiarity with PHP-based systems to support the migration. The engineer will also be expected to apply AI-assisted development practices to accelerate delivery across the software development lifecycle. Key Responsibilities Build, test, and deliver enterprise-grade web solutions using modern technologies such as JavaScript, TypeScript, React, and Next.js, contributing directly to a CMS modernization and migration initiative. Work with CMS platforms, APIs, integrations, and existing PHP-based applications as needed to understand current implementations and support a successful transition to the new solution. Collaborate with architects and engineering teams to translate requirements into maintainable technical solutions, applying strong software engineering practices around code quality, testing, performance, and security. Use AI-assisted development tools and agentic workflows throughout the SDLC to accelerate coding, testing, debugging, documentation, and technical analysis. Required Skills & Experience Strong hands-on experience with modern web application development. Strong experience with JavaScript and TypeScript. Hands-on experience with React and Next.js, or directly comparable modern web frameworks. Solid understanding of software engineering principles, programming logic, clean code, testing, debugging, and maintainability. Experience with CMS concepts, including content modeling, APIs, integrations, and modern CMS architectures. Familiarity with PHP-based applications and the ability to read, understand, debug, and navigate an existing PHP codebase. Deep PHP specialization is not required. Experience analyzing functional and non-functional requirements and contributing to technical implementation decisions. Practical experience using AI coding assistants or AI-enabled development tools as part of the software development lifecycle. Ability to design and document technical solutions, integrations, application workflows, and data flows. Advanced English communication skills for technical discussions, collaboration, and documentation. #LI-BM2 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. 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.