Job Summary: We are seeking a Mid-level Developer to work on the development, evolution, and maintenance of corporate systems, with a backend focus on C# and .NET, system integration, and database integration, seeking candidates with strong technical maturity, autonomy in delivery, and the ability to provide technical support to the team. Key Highlights: 1. Development, evolution, and maintenance of corporate systems. 2. Backend focus with C# and .NET, system integration, and database integration. 3. Seeking candidates with technical maturity and autonomy in delivery. **Area of Work:** Fullstack**City:** Curitiba; Hybrid**State:** PR**Country:** Brazil**About the Company:** The **Copel Foundation** is a **non-profit entity** affiliated with the **Copel Group**, established to **administer supplementary pension plans and benefits** for Copel employees and retirees, as well as employees and retirees of sponsoring companies. It operates with a focus on **pension, financial, and actuarial management**, ensuring long-term sustainability, governance, regulatory compliance, and social protection for participants. It is recognized for its **institutional solidity**, **transparency**, and **sound management practices**, ranking among the country’s leading pension funds in the energy sector. **About the Position:** We are looking for a Mid-level Developer to work on the development, evolution, and maintenance of corporate systems, with a strong backend focus on C\# and .NET, system integration, and database integration. We seek candidates with strong technical maturity, autonomy in delivery, and the ability to provide technical support to the team**.** **Main Responsibilities** Backend Development with C\# and .NET * Working with Oracle databases * Frontend Development (Angular) * Proposing technical improvements and innovations in projects. * Independently handling critical deliveries. * Contributing to defining and evolving system architecture. * Supporting junior developers, aiding their technical growth. * Leveraging React knowledge as a differentiator for complementary solutions, proof-of-concepts, or prototypes. **Technical Requirements** * Degree in Information Technology, Software Engineering, Computer Science, or related fields. * Proven experience in backend development with C\#, .NET, and Angular. * Knowledge of databases and PL/SQL. * Ability to work autonomously, with organization and technical responsibility. **Preferred Qualifications** * Experience with React * Experience with Oracle databases * Experience with REST APIs * Adherence to software development best practices, version control, and code quality * Experience in corporate environments or mission-critical systems Employment Model: **CLT** – Hybrid (1 day per week remote) \+ benefits or **PJ** **Benefits** **(if CLT)** Meal/Voucher allowance: R$1\.884,42 Health insurance and private pension plan.