Senior .NET Developer (Security/Vulnerability Project)

Description

Job Summary: We are looking for a Senior Backend Developer to work on the development and evolution of critical security, vulnerability, and pentest services, ensuring digital transformation in the financial market. Key Highlights: 1. Work on the development and evolution of critical security services 2. Work with distributed architecture and microservices in a cloud environment 3. Ensure best practices and elevate the team's technical level Nice to meet you — we are Evertec! ✨ Evertec is a technology company specializing in financial services, with over 27 years of experience and presence in 26 countries across Latin America and the Caribbean. Processing over 11 billion transactions annually, we are a reference in solutions that drive digital transformation in the market. We offer a comprehensive portfolio of software solutions, serving financial institutions, enterprises, and fintechs seeking innovation, security, and efficiency. Our commitment lies in technological excellence, financial inclusion, and generating sustainable value for customers, employees, and partners, fostering a more connected and accessible ecosystem. Requirements: **We are seeking a Senior Backend Developer – Project: Security, Vulnerabilities, and Pentest** Key Responsibilities: Develop and evolve critical security and vulnerability services across all company systems. Design and maintain high-performance REST APIs, ensuring reliability and scalability. Evolve the cloud-based microservices architecture. Implement asynchronous integrations using Azure Service Bus. Work with authentication and authorization via Keycloak (IAM). Perform database modeling, optimization, and query tuning in SQL Server. Apply best practices such as SOLID, Clean Code, and automated testing. Support architectural decisions and continuous improvement initiatives. Conduct code reviews and elevate the team's technical level. Follow industry-leading security practices, especially OWASP guidelines. Essential Requirements: Solid experience with .NET Core / .NET 8+. Experience with distributed architecture and microservices. Experience with Azure (App Services, Service Bus, Storage). Advanced proficiency in SQL Server (modeling, performance, optimization). Knowledge of messaging systems. Experience with OAuth2 / OpenID Connect and Keycloak. Experience with DDD (Domain-Driven Design). Familiarity with Clean Architecture. Knowledge of secure development best practices. Experience with observability and monitoring. Experience in financial or regulated systems. Important Differentiators: Strong technical expertise and ability to influence architectural decisions. Security-oriented profile focused on application security and vulnerability prevention. **Important: Hybrid work required at Vila Olímpia, SP!** Benefits What you’ll find here: Partnership club Health insurance Meal allowance Childcare assistance Life insurance Transportation allowance Flexible benefits (you choose benefits according to your needs). * At Sinqia, we value diversity and believe that what adds value is precisely varied ideas and perspectives. Therefore, race, color, religion, gender and gender identity, nationality, disability, sexual orientation, ancestry, or age will not prevent you from joining our team. Do you identify with this opportunity? It could be yours! Send us your resume.