Senior .NET Full-Stack Lead: React & SQL (Onsite Poland)

KEYES; Warszawa; Híbrido; PLN 240.000 - 320.000; Jornada completa

Descripción de la vacante

KEYES is seeking a Senior Full Stack .NET Developer / Technical Lead to design, develop and support enterprise web apps in a complex IT environment. You will lead teams, own technical delivery and work with stakeholders and external partners.

relocation to Poland or within 2 hours of Warsaw is required; on-site presence may be requested occasionally. Proficiency in C#, ASP.NET Core, EF, SQL Server, React/TypeScript is essential, with Azure DevOps and CI/CD experience beneficial.

Formación

• 8+ years in IT with 6+ years using listed tools
• UML certification
• Software Development certification related to .NET/Microsoft
• Strong experience with C#, ASP.NET Core / .NET 8 and EF
• Front-end with React and TypeScript
• SQL Server knowledge and data management
• Azure DevOps and CI/CD pipelines
• Understanding of multi-tier architecture and UML modelling
• Experience in Agile/Scrum environments
• Experience with Windows/IIS and containerized/virtualized infra
• Security-focused development and production support

Responsabilidades

• Design, develop and maintain enterprise web apps using C#, ASP.NET Core / .NET 8, EF and SQL Server
• Build modern SPAs with React and TypeScript
• Lead development teams, promote best practices and coding standards
• Participate in Agile/Scrum planning and estimation
• Perform code reviews and manage technical debt
• Produce documentation, designs and specs
• Collaborate with external partners for knowledge transfer
• Provide production support and incident root-cause analysis
• Handle deployment through Azure DevOps Pipelines
• Support integration with authentication and identity-management solutions
• Ensure security and compliance across applications

Conocimientos

C#

ASP.NET Core

React

TypeScript

SQL Server

UML modelling

Azure DevOps

CI/CD pipelines

Agile/Scrum

Leadership

Educación

UML certification

Software Development certification (.NET/Azure)

Herramientas

Azure DevOps

CI/CD pipelines

OpenShift

Nutanix

Windows/IIS

Descripción del empleo

KEYES is seeking a Senior Full Stack .NET Developer / Technical Lead to design, develop and support enterprise web apps in a complex IT environment. You will lead teams, own technical delivery and work with stakeholders and external partners.

relocation to Poland or within 2 hours of Warsaw is required; on-site presence may be requested occasionally. Proficiency in C#, ASP.NET Core, EF, SQL Server, React/TypeScript is essential, with Azure DevOps and CI/CD experience beneficial.