The first thing you need to know is that here you won’t fall into routine. Radix develops solutions for companies across different sectors and industries. Each project has its own technologies, solutions, and deadlines—and you’ll have the opportunity to work on and experience diverse challenges. In addition to our presence across Brazil—with offices in Rio de Janeiro, São Paulo, and Belo Horizonte—we also have subsidiaries in the United States, reinforcing Radix’s growing position as a **global** company. Do you want to be part of this story and turn ideas and dreams into reality? We are seeking a Senior Fullstack Developer to work on a strategic digital modernization project, responsible for building an application based on a modern, scalable architecture integrated with the Microsoft ecosystem. This professional will play a key role in defining best practices and ensuring the technical quality of deliverables. ### **Responsibilities** * Serve as the technical reference for application development. * Develop and enhance SPA applications using React 18 + TypeScript. * Implement and maintain APIs in .NET 8, including integration with API Gateway (YARP). * Support the definition and implementation of cache-first strategies using Redis. * Integrate solutions with Microsoft Graph, Power BI, and Azure AD (SSO). * Ensure standards for security, performance, observability, and resilience. * Support code reviews and ensure adherence to best practices. * Participate in technical and alignment meetings with international stakeholders, conducted in English. * Contribute to the project’s technical and architectural documentation. ### **Mandatory Requirements** * Solid experience as a Senior Fullstack Developer. * Strong knowledge of React (18+) and TypeScript. * Proven experience with .NET (preferably .NET 8). * Experience with REST APIs, versioning, and integration patterns. * Experience with Azure AD / MSAL / SSO. * Knowledge of Redis and PostgreSQL. * Experience integrating corporate systems and enterprise environments. * **Fluent English (reading, writing, and speaking) – daily use with clients and international teams.** * Experience working in agile teams. ### **Preferred Qualifications** * Experience with API Gateway (YARP). * Knowledge of Power BI Embedded. * Experience with time-series data. * Experience in corporate portal or dashboard projects. * Experience with observability, rate limiting, and circuit breakers. **Benefits:** * National Health Insurance (for employee and dependents, private room) * National Dental Insurance (for employee and dependents) * Meal/Voucher allowance (flexible) * Remote work allowance * Birthday day off * Wellhub (formerly Gympass) * Extended Maternity Leave (6 months) and Paternity Leave (20 days) * Childcare allowance for children up to 3 years old (per child) * Mental health support through Wellz * Benefits Club offering discounts with various partners * Partnerships with educational institutions and language courses * Professional Development (Corporate University) * Partnership with coworking spaces across Brazil * Quality of Life and Well-being Program * Consulting physician for Radix employees * Incentive plans **Radix consistently ranks among the Best Companies to Work For because:** * We have committed, dedicated, curious, and innovative professionals. * Team spirit is our greatest strength. We work cooperatively and know we’re all rowing in the same direction. * We foster a diverse environment that values equity and inclusion. * Our working hours are flexible, and in nearly all projects, you can work from anywhere in Brazil. * We value well-being and care for our people, offering mental health support programs, access to psychiatrists, and consulting physicians. **Interested?** **\#JoinRadix** **Job Code:** a3b7