Lead Full-Stack /.NET Developer

About the Position

We are seeking a Lead Full-Stack / .NET Developer to modernize a legacy accounting application and migrate it to Azure Cloud. The role involves transforming a desktop/monolithic application into a cloud-based solution using microservices,.NET Core, Angular, and Azure services.

Responsibilities

• Design, develop, and maintain backend services and APIs using.NET Core / ASP.NET Core
• Support decomposition of legacy monolithic functionality into modular services and APIs
• Development and enhancement of Angular-based frontend components where needed
• Integration of application components with Azure services and existing backend systems
• Work with Azure Kubernetes Service, API Management, Application Gateway, Azure SQL, and related platform services
• Contribute to technical analysis of legacy application behavior, data flows, and integration points
• Implementation of clean, maintainable, and testable code following engineering best practices
• Participation in code reviews, automated testing, CI/CD pipelines, and release activities
• Collaboration with architects, product owners, QA engineers, and other developers to clarify requirements and technical constraints
• Use of AI-assisted development tools and agents as part of the project delivery process

Requirements

• 5+ years of experience with.NET Core / ASP.NET Core and C#
• Solid experience in designing and implementing REST APIs
• Skills in Angular and modern frontend development
• Understanding of microservices architecture and application modernization patterns
• Experience working with relational databases, preferably Azure SQL / SQL Server
• Practical experience with Azure cloud services
• Proficiency in CI/CD pipelines, preferably Azure DevOps
• Understanding of containerized application delivery, preferably Docker and Kubernetes / AKS
• Capability to work with legacy systems, existing data models, and complex business logic
• Strong troubleshooting, communication, and collaboration skills
• Good English communication skills

Nice to Have

• Background in accounting, finance, ERP, or invoicing systems
• Experience migrating desktop or monolithic applications to cloud-native architectures
• Familiarity with Azure API Management, Application Gateway, Front Door, Key Vault, Azure Monitor, and Azure Container Registry
• Expertise in domain-driven design, service decomposition, and API-first development
• Skills in automated testing and quality engineering practices
• Flexibility to use AI-assisted development tools such as GitHub Copilot, Claude Code, or similar coding agents
• Interest in AI SDLC, agent-assisted delivery, and modern software engineering automation

We Offer

• Opportunity to work on a cutting-edge project with a leading technology company
• Hybrid work model based in Krakow, Poland
• Competitive compensation package

About the Company

EPAM Systems is a global software engineering and product development company, delivering digital transformation and technology innovation to the world's leading companies.