Senior C# Developer - Buenos Aires, Argentina

Join First Systems SRL as a Senior C# Developer in Buenos Aires Job Description Develop service-oriented applications using C# with strong expertise. Actively participate in product design phases by analyzing requirements and proposing improved solutions. Demonstrate analytical skills, teamwork, collaboration, and active contribution. Collaborate on defining scalable architectures aligned with industry best practices. Ensure code quality and excellence in task execution. Support evolutionary maintenance and optimize application performance. Maintain a positive attitude toward problem-solving. Responsibilities Work seamlessly with the IT team to develop new features, maintain existing applications, and fix reported bugs using C#. Mandatory Requirements Currently studying or graduated in programming, engineering, computer science, or related fields. Minimum 3 years of professional experience developing service-oriented applications in C#. Proficient with Git version control. Strong teamwork skills. Experience with relational and non-relational databases. Solid knowledge of structured programming and object-oriented programming (OOP). Preferred Qualifications Experience with Node.js development. Knowledge of Angular for web application development. Android application development experience. Familiarity with financial messaging standards ISO8583 and EMV. Java development experience, especially with Spring Boot. Work Location & Schedule This is a full-time, on-site position based in Buenos Aires, Argentina.