At Hitss, innovation is our fuel, curiosity is our engine, and respect for the customer is our compass. If you are driven by a passion for creating disruptive technological solutions, if you constantly seek challenges that push the boundaries of what’s possible, and if you believe putting the customer first is the key to success, then you’re in the right place. We want people who stand out, think outside the box, and are willing to explore new horizons. Here, every idea is valued, every question is encouraged, and every challenge is embraced as an opportunity for learning and growth. Join us and become part of a vibrant culture where innovation is fueled by relentless curiosity and where respect for the customer permeates all our actions. Here, you’ll have the freedom to explore your skills, collaborate with brilliant minds, and shape the future of technology. If you’re ready to join a company that believes talent is the key to success, send us your resume and become part of our team. We look forward to meeting you and jointly driving the next generation of technological solutions. **Come be a Hit!** **Responsibilities and Duties** * Develop and maintain scalable web applications using C#, ASP.NET Core, and Web API. * Proactively participate in data modeling and advanced SQL query optimization across multi-database environments (Oracle/SQL Server). * Design robust integrations between legacy systems and new platforms. * Ensure compliance with information security requirements (authentication, encryption, and data protection) from the code design stage. **Requirements and Qualifications** **Required Qualifications** * Completed undergraduate degree in IT or related field + postgraduate degree or MBA in the field of expertise and/or development processes; **OR** * Completed undergraduate degree in any field + postgraduate degree (in progress or completed) in IT or a field related to the role. * Availability to work in a hybrid model at the center of Rio de Janeiro/RJ. **Desired Qualifications** * Experience developing applications using the .NET platform, including C#, ASP.NET, ASP.NET MVC, ASP.NET Core, Web API, WCF, etc. * Solid experience in data modeling, database design, and SQL query optimization. * Proficiency working with relational databases such as SQL Server, Oracle, MySQL, etc. * Familiarity with system integration patterns and inter-component communication techniques; * Understanding of information security principles and how to apply them in software development, including authentication, authorization, encryption, etc. **Additional Information** Want to see all our open positions? Visit our page: Hitss – Join Our Team https://globalhitss.gupy.io/ **Important: All our positions are open to professionals with disabilities, and we uphold gender and racial/ethnic equity.** HITSS BRASIL is a multinational company within the Claro Group, operating for over 30 years in the digital solutions and IT services market across 7 countries. Combining unparalleled experience and specialized expertise, our 5,000 employees are committed to making the new happen every day. We bet on innovation with integrity and strive to develop inclusive, responsible, and sustainable solutions for our employees and customers. **Through our diversity and inclusion pillar, everyone has equal opportunities to build their career.** We do not discriminate based on gender, religion, race, sexual orientation, social status, or disability. If you enjoy challenges, trends, agile and innovative processes, this is your place. Join us!