Senior Fullstack Developer

Description

Job Summary: Senior fullstack professional to support, evolve, and integrate legacy systems within a complex corporate environment, with emphasis on stability and optimization. Key Highlights: 1. Work with legacy systems and critical integrations 2. Focus on stabilization and continuous evolution 3. Challenging environment with technical autonomy **Senior Fullstack Developer (.NET) | São Paulo (Hybrid – 3 days/week)** Work in a complex corporate environment, focusing on maintaining, stabilizing, and evolving legacy systems, as well as implementing critical integrations across platforms. **Responsibilities:** * Maintain and evolve legacy .NET systems * Develop and maintain integrations (REST, SOAP, APIs, and Web Services) * Implement APIs using Orchestrator and Groovy * Perform advanced debugging and root cause analysis * Fix defects and improve application stability * Collaborate with technical teams and business areas * Propose technical improvements and architectural optimizations **Requirements:** * Solid experience with .NET Framework and/or .NET Core * Proficiency in C# * Experience with legacy systems and critical integrations * Knowledge of SQL Server (queries, stored procedures, troubleshooting) * Hands-on experience with debugging, logs, and analysis of existing code * Knowledge of WordPress **Nice-to-have:** * Experience with Digibee * Knowledge of Java **Profile:** * Technical autonomy and ownership mindset * Ability to work under pressure and prioritize tasks * Analytical mindset focused on problem-solving * Strong communication and collaboration skills within teams **Work model:** * Hybrid (São Paulo/SP – 3 days onsite) * PJ contract **Challenge context:** Environment with critical systems and complex integrations, focused on stabilization, incident reduction, and continuous evolution. Ideal for professionals experienced in challenging environments who can structure, optimize, and ensure system reliability. Job type: Full-time, Freelance / PJ Benefits: * Medical assistance * Partnerships and commercial discounts * Remote work Experience: * Java 8 (Mandatory) * MySQL database management (Mandatory) * Angular 14 (Mandatory) * JWT (JSON Web Tokens) authentication and authorization management (Mandatory) Work location: Hybrid remote for São Paulo, SP