Stefan S.

Happening is a software development company specializing in gaming, entertainment, and management systems, delivering advanced solutions for online gaming platforms, slot management, and digital betting operations. The company focuses on scalability, security, and performance for high-traffic gaming environments.

• Designed and developed internal management software to meet business and operational requirements across multiple departments.
• Integrated third-party systems and gaming providers such as Newton and Omniplay, ensuring seamless interoperability with internal tools for slot and bet ticket management.
• Collaborated with cross-functional teams to design modular, scalable architectures for backend and frontend components.
• Deployed and maintained containerized applications using Docker, leveraging AWS and Azure Active Directory (AD) for authentication and cloud infrastructure.

Expert Software is a Romanian software company specializing in enterprise-level systems, EDI (Electronic Data Interchange) platforms, and digital transformation solutions. The company provides customized, high-performance software for retail, logistics, and supply chain management.

• Worked on the company’s core EDI platform, facilitating the exchange of thousands of documents per hour between retailers and suppliers, including invoices, receptions, and corrections.
• Led the migration of the base code from CodeIgniter to Symfony, significantly improving processing performance and scalability to handle higher data volumes.
• Developed new modules for invoice and reception processing, including logic to automatically generate correction documents such as debit and credit notes.
• Contributed to the architectural redesign of the platform, building it as modular components for easier maintenance, updates, and scalability.

Beler Soft is a Romanian software development company specializing in custom web applications, enterprise software, and medical information systems. The company delivers end-to-end digital solutions tailored to client requirements across healthcare, business, and government sectors.

• Developed and maintained custom PHP applications based on client specifications, ensuring scalability and data integrity.
• Performed cross-testing, debugging, and bug fixing, improving overall application stability and performance.

Key Projects:

• Developed an advanced platform to manage relationships between doctors and patients.
• Implemented CRUD operations for patients, prescriptions, appointments, and biometric measurements (e.g., BPM, blood sugar).
• Built data visualization features using interactive charts and improved both the patient and doctor modules.

Medical Application (Zend 1):

• Enhanced an existing healthcare management system by developing an API layer to support multiple integrations and streamline communication between services.

H Grup IT Expert is a Romanian software development and IT consultancy company delivering custom applications, database systems, and digital solutions to clients across finance, logistics, and public administration sectors.

• Designed and developed custom software applications based on specific client requirements.
• Created and optimized database structures.
• Conducted testing, debugging, and maintenance of existing systems to ensure reliability and performance.