Senior .NET Developer – C#, SQL, RESTful APIs

Unleash innovation — architect tomorrow’s enterprise solutions with power and precision! Porto-based opportunity with hybrid work model As a Senior .NET Developer, you will be working for our client, a forward-thinking leader in the technology industry dedicated to delivering robust, scalable, and innovative software solutions. You will play a crucial role in designing, upgrading, and optimizing applications that empower businesses to stay ahead in a competitive landscape. Join us and be part of a journey that pushes technical boundaries and drives digital transformation. Your main responsibilities: Design and develop high-quality, scalable .NET applications following best practices and architectural standards Enhance and upgrade existing applications to ensure optimal performance, security, and maintainability Develop and optimize complex SQL queries, stored procedures, and views for efficient data processing Establish and maintain automated testing frameworks to ensure code quality and reliability Collaborate with cross-functional teams using agile methodologies to deliver innovative solutions Integrate RESTful APIs to enable seamless data and service communication Apply SOLID principles and design patterns to create flexible and maintainable code Participate in code reviews, knowledge sharing, and continuous improvement initiatives You're ideal for this role if you have: 6+ years of professional experience in software development, with a strong focus on C# and .NET technologies Proven expertise in SQL, including database architecture and complex query optimization Hands-on experience in developing and working with RESTful APIs Solid understanding of SOLID principles and design patterns Experience working in agile environments Fluent in English, with Portuguese language skills considered a plus It is a strong plus if you have: Certifications related to .NET or software architecture Experience with automated testing tools and frameworks Language Required for the ro