Job Summary: We are looking for a professional to define best practices, develop and test systems, propose technological improvements, and guide developers in a dynamic environment. Key Highlights: 1. Full-Stack development (Front-End and Back-End) 2. Opportunity to propose technological improvements to systems 3. Assist in guiding developers and supporting decision-making **What We’re Looking For?** **Main Responsibilities:** Define best development practices; Develop, code, and test systems using the relevant programming language, working across both Front-End and Back-End development projects; Implement complex functionality; Propose technological improvements to systems; Monitor adherence to best practices in system development; Validate existing test coverage in projects; Validate new application features; Monitor application system performance; Propose technological improvements to systems; Anticipate opportunities and issues proactively, acting swiftly and effectively by implementing preventive solutions; Support junior developers and contribute to project decision-making; Maintain systems by implementing necessary modifications to meet user requirements; Perform program assembly, debugging, and testing tasks, and carry out maintenance on already-developed programs. **Requirements:** Solid experience in C# and .NET Core development; Advanced knowledge of relational databases (PostgreSQL, SQL Server); Advanced knowledge of testing (unit, E2E, integration); Experience with messaging services (AWS SQS, RabbitMQ, etc.); Experience with observability tools (Datadog, Grafana, Splunk, etc.); Experience with Git for version control; Experience with payment processing; Strong teamwork and communication skills. **Preferred Qualifications:** Experience in financial or regulatory services. **Location:** **Why Build Your Career at Meta?** We offer autonomy, clear goals, and a dynamic, challenging environment where professionals have the opportunity to work with diverse technologies, participate in all types of projects, bring forward new ideas, and work from anywhere in Brazil—and why not, anywhere in the world. Additionally, we are ranked among the best companies to work for in Brazil by Great Place to Work, and one of the top 10 fastest-growing companies in the country for three consecutive years, according to the Informática Hoje Annual Report. **What Are Our Values?** * We are people serving people * We think and act like owners * We are driven by performance * We grow and learn together * We pursue excellence and simplicity * Innovation and creativity are in our DNA Everyone is welcome, regardless of background, disability, ethnicity, religious belief, sexual orientation, appearance, age, or similar characteristics. We want you to grow with us in an inclusive, welcoming environment full of opportunities. If this resonates with you, then \#JoinMeta!