.net developer for system modernization

Billennium is a global technology company with over 20 years of experience, focused on innovation and supporting enterprises.

• Increase application security by identifying and remediating vulnerabilities and aligning the solution with applicable security standards
• Modernize data import processes and rebuild existing mechanisms into a more efficient and stable solution
• Rebuild the integration architecture by replacing DB Link-based communication with modern, secure APIs
• Design and implement authentication and authorization mechanisms, including Multi-Factor Authentication (MFA)
• Optimize data export processes, including business logic and file interfaces used to generate and transfer data
• Refactor and modernize existing code while maintaining system continuity
• Analyze current solutions and propose changes to improve application stability, security, performance, and maintainability
• Collaborate with technical teams, architects, and security specialists

• Strong knowledge of C# and .NET / .NET Core
• Experience working with complex existing systems, including refactoring and modernization
• Practical experience designing and implementing RESTful APIs
• Good knowledge of application security, including web vulnerabilities and security best practices
• Knowledge of OAuth 2.0, OpenID Connect, and MFA
• Strong knowledge of SQL and relational databases
• Experience designing and optimizing data flows between systems
• Experience with data import and export processes, file formats, and system integration
• Knowledge of design patterns and Clean Code practices
• Experience creating unit and integration tests
• Knowledge of concurrent and multithreaded programming and application performance optimization
• Experience with Git and tools such as Jira or Azure DevOps
• Experience working in Agile, Scrum, or Kanban environments
• Будет плюсом: No additional preferences specified

• Benefits include Udemy for Business, private medical care, a Multisport card, a veterinary package, language lessons, and shopping vouchers
• Flexible working hours
• Professional development and learning opportunities, including benefits through official partnerships with Microsoft, AWS, Snowflake, and Salesforce
• Work in a diverse international team
• Team-building events, hackathons, CSR initiatives, and an annual company event in Mazury