Arthur Beleziak

Development and optimization of software for banking self-service terminals, focusing on secure transaction processing, intuitive user interfaces, and integration with core banking systems.

Middle.NET Developer at PrivatBank (2026-04 – Present)

Development and optimization of software for banking self-service terminals, focusing on secure transaction processing, intuitive user interfaces, and integration with core banking systems.

• Developed and maintained projects using C# 10/13 (.NET 6/9) stack.
• Authored high-quality code for both back-end and front-end components.
• Analyzed existing architecture, contributed to its evolution, and implemented innovative technical solutions.
• Developed and optimized complex SQL queries, working with triggers, functions, and stored procedures.
• Collaborated in a SCRUM environment, participating in Code Reviews, pair programming, and following Git flow best practices.
• Maintained technical documentation using Swagger, Markdown, and XML-docs.
• Independently resolved ongoing issues throughout the full project lifecycle.

FullStack Developer at Dully (2025-05 – 2026-04)

Development of a scalable SaaS platform designed to automate daily restaurant operations, including role management, access control, and employee workflow optimization.

• Architected and developed the server-side logic using.NET Minimal APIs to ensure high performance and scalability.
• Implemented responsive user interfaces using Blazor, delivering a seamless and intuitive user experience.
• Optimized database schemas and authored complex queries using LINQ and Entity Framework Core for reliable data handling.
• Integrated and configured Azure cloud services for streamlined deployment and platform stability.
• Collaborated within a team of 6 engineers, participating in code reviews and taking features from conceptualization to release.

Software Engineer at Syteca (2024-07 – 2025-04)

Contribution to an enterprise-grade cybersecurity platform providing data protection, access control, user activity monitoring, and anomaly detection.

• Developed and maintained core modules for privilege management, identity verification, and user session recording.
• Implemented business logic for detecting insider threats and facilitating rapid incident response.
• Improved system stability and maintainability through targeted refactoring and critical bug fixes.
• Developed new platform features utilizing a modern tech stack including.NET Core and React.
• Managed large-scale datasets across MSSQL and PostgreSQL to ensure the integrity of monitoring logs.

FullStack.Net Developer at IntenseLab (2023-01 – 2024-06)

Development of a Web Admin CRM for a trading platform, enabling administrators to monitor trader activity, analyze financial data, and manage system settings.

• Developed an intuitive administrative dashboard using Blazor WASM for visualizing complex trading metrics and reports.
• Built robust Web API services to facilitate high-speed data exchange between the client and the database.
• Implemented real-time tracking features to monitor trader performance and individual trade activities.
• Managed Azure infrastructure and ensured high availability of the CRM system.

Bachelor in Computer Engineering – Lviv Polytechnic National University (2019-09 – 2023-07)

Master in Computer systems and networks – Lviv Polytechnic National University (2023-09 – 2024-12)