Senior .NET Back-end Developer

Description

Here at Hyperativa, we believe innovation is possible! That is why we always promote the best solutions for clients and partners in CRM and promotion projects. With our PCI Compliance certificate, we reinforce our commitment to security, agility, and creativity in all jobs! We are looking for people who want to learn and who are creative. We encourage and value transparency, the exchange of experiences, and project delivery to ensure a light and understanding environment. Come be part of a diverse team that values dialogue and constantly seeks ways to modernize and ensure more success stories! \#VENHASERHYPER We are looking for a .NET Back-end Developer to work on the development of high-availability APIs and services used in digital promotion operations, raffles, incentive campaigns, and cashback. The professional will be part of development teams serving multiple clients in the financial sector. **Responsibilities and attributes** * Develop, evolve, and maintain back-end APIs and services using **.NET Core 8\+**. * Perform pinpoint maintenance on legacy components in **.NET Framework 4\.8 and ASP .NET**. * Implement business rules following **DDD** principles and architecture best practices. * Develop integrations between internal and external systems, ensuring performance, security, and reliability. * Work with **SQL Server**, using procedures and data access best practices (Dapper). * Support the team in investigating and correcting incidents, maintaining expected quality levels. * Follow security standards applied to the credit card industry (PCI). **Requirements and qualifications** * Experience with **C\# and .NET Core** (modern versions). * Experience with **REST API** development and domain-driven architecture principles. * Experience with **Dapper** and SQL Server (procedures). * Version control with Git (Azure DevOps). * Security knowledge: **JWT and OAuth2**, secure coding, and OWASP fundamentals. * Experience with messaging: **RabbitMQ and Cloud Tasks (GCP)**. * Experience with caching: Redis. * Knowledge of **Docker** and **Kubernetes**. * Familiarity with cloud environments (GCP/AWS). * Concepts of working with **mTLS** and **MLE (Message Level Encryption)**. * Performance optimization in SQL queries. * Advanced English. #### **Differential** * Intermediate knowledge in front-end programming (SPA). **Additional information*** Pleasant climate, constant learning, and daily challenges; * Active participation in decisions; * Transparency in company guidelines; * Indefinite Home Office; * Group Life Insurance; * Half-day off on birthday; We are a technology company specialized in marketing and digital promotional campaigns, operating in the market for over 20 years. In a relaxed, plural climate that encourages professional and personal development, we offer marketing, loyalty, communication, database management services, and much more! Here, we believe innovation is possible! That is why we always promote the best solutions for clients and partners in CRM and promotion projects. With our PCI Compliance certificate, we reinforce our commitment to security, agility, and creativity in all jobs! Currently, we operate in a fully remote work model, providing the necessary equipment so that you can work and participate in daily meetings with your team with comfort and flexibility. Come be part of a diverse team that values dialogue and constantly seeks ways to modernize and ensure more success stories! \#VENHASERHYPER