Senior .NET Developer

Technologies we use

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.

Our requirements

• 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