We are looking for a **Senior Frontend Developer** to drive the evolution of modern applications built with **React.js**, participating in architectural decisions, building micro frontends, and integrating with backend services via **BFF**. The candidate will work in a collaborative environment, engaging in technical discussions, evolving architectural standards, and contributing to the development of scalable, high-performance products. **Responsibilities and Duties** * Develop and maintain frontend applications using React.js, TypeScript, and a component-based architecture * Participate in defining, evolving, and sustaining the Micro Frontends (MFE) architecture * Develop integrations with REST and GraphQL APIs, ensuring seamless interaction between frontend and backend * Develop and maintain APIs and BFFs using .NET (ASP.NET Core / C\#) * Evolve and maintain corporate component libraries and Design Systems * Implement continuous improvements in application performance, accessibility, observability, and security * Write and maintain technical documentation (ADRs, RFCs, diagrams, and development guides) * Collaborate with Architecture, Backend, Product, and SRE teams to define scalable solutions * Actively participate in technical discussions, backlog refinements, and code reviews * Ensure delivery quality through automated testing, engineering best practices, and development standards * Contribute to frontend and backend architecture evolution and modernization **Requirements and Qualifications** * Solid production experience with React.js and TypeScript * Experience developing and consuming APIs using .NET (ASP.NET Core / C\#) * Experience integrating REST and/or GraphQL APIs * Experience with Micro Frontends (MFE) architectures or modular frontend applications * Experience with frontend development best practices, componentization, and application architecture * Experience with automated testing, code review, and code quality * Familiarity with AI tools applied to software development—such as Claude, ChatGPT, GitHub Copilot, or similar—for supporting analysis, development, testing, documentation, and productivity gains * Knowledge of AI best practices in the development lifecycle, including validation of generated code, security, and delivery quality * Experience with enterprise AI tools and AI-assisted development workflows * Strong communication skills and ability to work effectively in a team * Intermediate English proficiency **Preferred Qualifications:** * Experience with AWS * Experience with application observability and monitoring * Experience with accessibility (WCAG) * Experience with i18n (internationalization) and application localization * Knowledge of prompt engineering applied to software development **Additional Information** * Meal Allowance and/or Food Voucher; * SESI and SESC Health and Wellness Benefits, providing access to healthcare, wellness, and leisure services; * Partnerships with Educational Institutions, offering exclusive discounts on courses and educational programs; * Opportunities for career growth and participation in strategic projects; * Opportunity to work at a rapidly expanding company in the market. Extractta was founded with the purpose of transforming technology into tangible results for companies across diverse industries. Throughout our journey, we have established ourselves as an innovation and technology consulting firm that unites strategy, people, and digital solutions to support organizations in their growth and transformation challenges. We operate across multiple domains—from digital innovation and transformation to project and operations management—helping companies achieve exceptional outcomes through efficiency, process intelligence, and continuous adaptation. We also distinguish ourselves through specialized consulting that supports our partners in advancing digital culture, communication, data, and emerging technologies, while establishing global partnerships enabling us to deliver top-tier solutions to our customers’ ecosystem—all backed by a highly skilled team! At Extractta, we believe our competitive edge lies in our people. That’s why we invest in a collaborative, innovative, and open environment where every talent has space to learn, grow, and contribute to challenging projects that truly transform businesses. If you seek a company in constant evolution, passionate about technology, and committed to its employees’ development, your place may be here. Join Extractta and help build the future with us.
João Silva
Indeed · HR
João Silva
Indeed · HR
