Senior .NET Developer

Expected, .NET, .NET Core, C#, Entity Framework, TypeScript, Microsoft SQL Server, React.js, Azure DevOps, UML

Optional, Hangfire

Operating system, Windows

About the project, We are looking for a Senior .NET Developer to join a collaborative engineering team focused on delivering enterprise-grade web applications. The person in this role will design, build and support solutions using modern .NET technologies, participate in solution lifecycles, and work closely with product and third-party teams to maintain production systems and handle technical handovers.

Your responsibilities, Design and implement end-to-end application components: data layer, business logic and user interface., Develop and maintain enterprise web applications using .NET (Core / 8), C#, Entity Framework and SQL Server., Contribute to React/TypeScript single-page applications and support build/deploy pipelines in Azure DevOps., Lead or provide technical guidance for development teams, including code reviews and technical-debt management., Participate in full product lifecycles from requirements and design (UML) through delivery, testing and production support., Support deployment and operation on Windows/IIS and container or virtualised platforms (e.g., Nutanix, OpenShift); work with background-job frameworks and certificate/data protection features., Integrate applications with identity and document-management systems (e.g., SAML 2.0 / Entra ID, PDF/image processing)., Work within Scrum teams and collaborate with third-party contractors during third-line support periods., Support release and incident processes in a large-organization context, including UAT and Change Advisory Board activities.

Bachelor's degree, At least 6 years of professional experience in IT, including a minimum of 3 years in a similar position., Proven experience delivering enterprise-level software and at least one complete solution lifecycle., Expertise in .NET development (Core / 8), C#, Entity Framework and SQL Server; experience with React and TypeScript for front-end work., Practical experience with Azure DevOps pipelines for build and deployment., Hands-on experience with deployment platforms (Windows/IIS, containers/virtualised platforms), background-job frameworks (e.g., Hangfire), and security scanning / penetration-test remediation., Experience integrating with SAML 2.0 / Entra ID and document-processing libraries; experience taking over and improving code delivered by external contractors., Comfortable supporting production systems in large organisations and collaborating with third-party development teams., Familiarity with UML and the ability to design applications and document technical solutions clearly., Experience working in Scrum development teams and the ability to lead technical discussions and teams., English language proficiency at B2 level minimum

What we offer, Remote working., Unique TEAL culture, relationship- and respect-driven community, non-corporate atmosphere., Agile approach and no bureaucracy., Outstanding integration trips to various places in Europe., Activities to support your well-being and health., Luxmed Gold Extended medical care and Multisport Plus benefit.

This is how we work on a project, Continuous Deployment, Continuous Integration

Benefits, sharing the costs of sports activities, private medical care, remote work opportunities

Recruitment stages, Screening Call, Cultural Fit Interview, Technical Interview, Final Round Interview

YOUR ITEAMS sp. z o.o., Unique TEAL culture, relationship- and respect-driven community, non-corporate atmosphere., Agile approach and no bureaucracy.

This is how we work,