**At Premiersoft, we transform challenges into real solutions!** With over a decade of experience in development, we are driven by a clear purpose: **creating technological experiences that propel businesses** and accelerate our clients’ transformation. Our team, composed of more than 200 **\#Heroes**, combines technical excellence with our core DNA: **Team Player, Growth Driven, and Problem Solver**. We thrive on challenges, are guided by innovation, and committed to delivering **high-impact solutions**, every single day. **About the opportunity:** The professional will directly develop integrations related to bank collections, hybrid boleto (Bolecode), PIX, card acquirers, and consumption of secure REST APIs within a mission-critical legacy corporate environment. They will collaborate closely with the internal development team, directly supporting the evolution of the financial hub and its banking and payment method integrations. **Your responsibilities will include:** * Interpreting technical banking documentation. * Understanding REST contracts and complex payloads. * Working in a legacy environment without requiring immediate modernization. * Investigating end-to-end issues. * Developing resilient and sustainable integrations. * Designing retry and fallback mechanisms. * Ensuring traceability of financial transactions. * Supporting technical and architectural decisions. **What you need to have:** * Solid backend development experience in C\#. * Experience with .NET Framework 4\.x. * Knowledge of ASP.NET MVC and Web API. * Experience consuming REST APIs with OAuth2 authentication. * Experience with financial integrations, banking APIs, and payment methods. * Knowledge of secure HTTP/HTTPS integrations. * Experience with TLS/SSL and mTLS (Mutual TLS) configuration. * Handling digital certificates (.crt, .key, .pem, and .pfx). * Experience with JSON serialization and deserialization. * Synchronous integration with external APIs. * Handling timeouts, retries, and communication failures. * Knowledge of idempotency and transaction reprocessing. * Experience with technical logging and traceability. * Experience with SQL Server. * Code versioning using Git. * Troubleshooting related errors. On-site hiring in Belo Horizonte/MG. **What we offer:** * A **collaborative** environment with **constant knowledge sharing**; * An open culture embracing **innovation, ideas, and ownership**; * Use of **modern technologies** and industry best practices; * Focus on **technical excellence** and **real-world impact** in deliverables; * Continuous encouragement of **learning and professional development**. **Our benefits:** * **TotalPass:** access to gyms, studios, and wellness activities; * Partnership with a **mental health clinic**; * **Paid time off:** 10 business days to recharge and take care of yourself; * Gifts via Flash — **birthday gift** and **anniversary gift**; * Referral bonus — **R$ 2\.000,00** per hire; * Ongoing development with **PDI, feedback, and certification support**; * **Free English classes:** preparing you for international opportunities; See what it’s like to join the Premiersoft team Learn more about us Visit our headquarters Communication throughout the selection process occurs via email or WhatsApp. To avoid missing any updates, please add the domain **@premiersoft.net** to your list of trusted senders and monitor your inbox and spam folder.
João Silva
Indeed · HR
João Silva
Indeed · HR
