Job Summary: We are seeking a .NET & CONCAR Developer to develop secure backend services and applications, with a focus on billing and accounting systems. Key Highlights: 1. Backend service and API development using .NET Core 2. Integration with billing systems and CONCAR 3. Collaborative and dynamic work environment We are looking for a .NET & CONCAR Developer with solid experience in backend service development and building secure applications. The ideal candidate must be solution-oriented for enterprise applications—specifically billing and accounting systems—with proven prior experience working with CONCAR or integrating with similar accounting systems. A professional with deep expertise in .NET Core, SQL Server databases, and application deployment via Docker containers is required. **Work Mode:** 100% on-site in San Isidro, Monday to Friday, 9 a.m. to 6 p.m. **Responsibilities:** **Core Development:** Develop and maintain backend services and APIs using .NET Core. **Accounting Integration:** Integrate systems with billing platforms and the CONCAR accounting system. **Data Management:** Design and optimize queries, stored procedures, and table structures in SQL Server. **Security:** Implement authentication and access control mechanisms using JWT. **Containerization:** Participate in the creation, configuration, and deployment of applications using Docker for development and production environments. **Analysis and Quality:** Analyze functional and technical requirements, and conduct testing, debugging, and performance optimization. **Documentation:** Document services and technical processes, collaborating with development, QA, and operations teams. MyApps is a company specialized in custom software development, tailored to each client’s specific needs. Our approach focuses on creating solutions that optimize processes, increase productivity, and generate value for businesses. We have a technical team that supports our clients from analysis through final project implementation. Requirements 1\. Essential Knowledge **Accounting Systems:** Proven experience working with CONCAR or direct integration with similar accounting systems. **Framework:** Advanced experience in development with .NET and .NET Core. **APIs:** Experience developing and maintaining REST services and APIs. **Database:** Advanced proficiency in SQL Server (optimized table and query design). **Containers:** Experience using Docker (creation, configuration, and deployment). **Security:** Implementation of authentication and authorization using JWT. 2\. Experience and Education **Professional Background:** Demonstrable 3–4 years of experience in developing billing and accounting systems. **Academic Degree:** Bachelor’s or Technical degree in Systems Engineering, Computer Science, Software Engineering, or related fields. 3\. Key Skills and Competencies **Problem Solving:** Ability to propose effective technical solutions based on requirement analysis. **Attention to Detail:** Focus on debugging and performance improvement to ensure secure and efficient applications. **Collaborative Work:** Ability to integrate into the software development lifecycle alongside various technical teams. Benefits If you are passionate about directly contributing to a challenging business and your work impacts customer satisfaction, this role is for you. Let’s go all in! **We Offer:** Microenterprise payroll (15 days of vacation and SIS). Opportunities for professional learning and development. A collaborative and dynamic work environment. Training in project management and digital tools.