Desenvolvedor(a) Full Stack .NET - Sênior

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Desenvolvedor(a) Full Stack .NET - Sênior based in Brazil. As a Senior Full Stack .NET Developer, you will build, evolve, and sustain critical digital solutions within a complex financial and regulatory ecosystem. You will work closely with Tech Leads, Product Owners, and QA professionals to turn well-defined specifications into reliable, testable software. The role combines strong backend engineering with integrations, distributed systems, SQL optimization, and occasional Angular development. You will also work with AI coding agents in a controlled, reviewable, secure, and auditable development workflow. Your contributions will directly support the modernization of legacy systems and their adaptation to new digital financial infrastructure. You will be encouraged to influence technical decisions, improve engineering practices, and contribute to a culture of quality and continuous learning. This is an opportunity for a senior engineer who values autonomy, technical excellence, traceability, and meaningful engineering challenges.