Billing Systems Engineer (C#/.NET)

TL;DR

Billing Systems Engineer (C#/.NET): Developing and maintaining financial billing systems and data-driven applications with an accent on T-SQL, .NET Core, and API integration. Focus on automating billing cycles, troubleshooting complex financial datasets, and migrating legacy components to the cloud.

Location: Must be based in Poland (Remote)

Company

hirify.global is a global leader in data and software services, transforming the vehicle lifecycle and protecting digital identities for partners in over 90 countries.

What you will do

• Design, develop, and maintain applications using C#, .NET Core, and ASP.NET Core.
• Develop complex SQL queries, stored procedures, and data models for financial systems.
• Analyze large datasets to troubleshoot billing discrepancies and ensure system accuracy.
• Coordinate monthly billing cycles and manage system-generated invoice attachments.
• Improve CI/CD automation and migrate legacy applications to cloud environments.
• Provide technical mentorship and support to junior team members.

Requirements

• At least 5 years of professional experience in C#, .NET, and ASP.NET WebAPI.
• Strong proficiency in Transact-SQL and SQL Server databases.
• Fluency in English is required.
• Ability to create reports using PowerBI or JasperReport.
• Experience with REST/SOAP web services and TDD/BDD practices.
• Must be based in Poland.

Nice to have

• German language proficiency.
• Intermediate MS Excel skills.

Culture & Benefits

• Opportunity to work in a global, innovative environment.
• Focus on professional growth and technical ownership.
• Collaborative team setting with a problem-solving culture.