Intetics Inc., a leading American technology company specializing in custom software application development, distributed professional teams creation, software product quality assessment, and “all-things-digital” solutions, is looking for a Senior .NET Engineer to join its innovative team.

Our client is developing a solution for accounting and CPA firms, helping them streamline core operations such as invoice, fee, and reconciliation processing. The platform is actively used by multiple clients and continues to grow.

Responsibilities

• Assess and refactor the existing .NET backend (ASP.NET / .NET Core); participate in feasibility studies to decide whether to refine or rebuild core components
• Extend or rewrite backend modules for financial and analytical reporting, ensuring high performance and data integrity
• Collaborate with ReactJS/VueJS frontend developers to define API contracts and optimize data flow
• Support integration with AI/agentic tools for report generation, testing, and system monitoring
• Maintain clear communication with U.S.-based stakeholders, provide progress updates, and ensure consistent code quality through reviews and documentation

Requirements

• Strong expertise in C#, .NET / .NET Core (backend focus)
• Experience integrating with ReactJS and/or VueJS frontends via RESTful APIs
• Solid understanding of software architecture — microservices or modular monoliths
• Proficiency with MS SQL Server and Entity Framework
• Familiarity with Azure and containerization (Docker) is a plus
• Experience in refactoring and modernizing legacy .NET applications
• Interest or experience in AI-assisted or agentic development environments
• Excellent English communication skills and ability to collaborate with semi-technical U.S. teams

Will be a plus

• Hands-on problem solver, capable of working independently in partially defined environments
• Able to deliver feasibility studies within 10 days and stable prototypes within 30 days
• Strong ownership, attention to detail, and commitment to documentation standards
• Comfortable working alongside AI copilots/agents and adapting to new workflows