**About the opportunity:** We are looking for a highly technical and strategic Software Architect to work on a large-scale project in the financial sector. The professional will be responsible for defining, evolving, and ensuring the quality of architectural solutions, guaranteeing scalability, performance, and technical governance in a modern, microservices-oriented environment. **Responsibilities:** Define and evolve system architectures based on .NET, Clean Architecture, and Microservices. Apply and promote DDD (Domain\-Driven Design) and SOLID principles, ensuring sustainable and scalable code. Structure event-driven integrations using Kafka, RabbitMQ, or SQS. Design and optimize relational and non-relational databases, aligning technical and business requirements. Implement Hexagonal Architecture patterns, reinforcing modularity and testability. Collaborate with development and DevOps teams on containerization (Docker) and orchestration (Kubernetes) practices. Support strategic decisions regarding application observability, security, and performance. Act as a technical reference and promote best practices across squads. **Technical Requirements:** Solid experience with .NET Core / .NET 6\+ , Clean Architecture, and Microservices. Proficiency in DDD, SOLID, and Hexagonal Architecture. Experience with Kafka, RabbitMQ, or SQS. Knowledge of Docker and Kubernetes. Experience with SQL Server, PostgreSQL, MongoDB, or equivalent databases. Cloud experience (AWS or Azure) is a differentiator. **Desired Profile:** Systemic vision and ability to design scalable and sustainable solutions. Strong communication and collaboration skills across technical and business areas. Technical leadership and team mentorship attitude. Proactivity, autonomy, and results focus. **Benefits:** Wellhub (Gympass): access to gyms and physical and mental wellness programs. Starbem: consultations with psychologists, psychiatrists, nutritionists, and other specialists. Avus: health insurance and medications with up to 4 dependents included free of charge. iFood Club: exclusive discounts at partner restaurants and services. Paid recess, as agreed upon with the project. Monthly performance bonus. Job type: Independent contractor / PJ Benefits: * Medical assistance * Commercial agreements and discounts * Meal allowance