.NET Core & Azure L3 Support Engineer

BELVEDERE; Wrocław; On-site; PLN 123,000 - 156,000; Part time

Job summary

BELVEDERE in Wroclaw, Poland seeks an experienced .NET Core & Azure L3 Support Engineer on a 6-month contract. You will handle complex production incidents, perform root-cause analyses, and optimize cloud-native applications built on .NET Core and Azure.

The role blends development and operations, including monitoring, deployments, and automation opportunities. You will work with Azure services, REST APIs, and microservices in a fast-paced environment, collaborating with engineering and business

Qualifications

• 6-8 years of .NET/Cloud experience.
• Strong .NET Core, ASP.NET Core and C# skills.
• Experience building and supporting REST APIs and microservices.
• Azure services like App Services, Functions, Storage, Key Vault, Service Bus and Monitor.
• Experience with Azure DevOps, CI/CD and release management.
• Troubleshooting via logs and debugging in distributed systems.
• SQL Server performance tuning and observability skills.
• Knowledge of Docker and Kubernetes (AKS) is preferred.
• Familiarity with ITIL-based support processes is a plus.

Responsibilities

• Resolve complex production incidents in .NET Core and Azure environments.
• Investigate performance bottlenecks and implement fixes.
• Conduct root-cause analysis to prevent recurrences.
• Maintain and enhance apps using .NET Core, ASP.NET Core, C# and Web APIs.
• Monitor application health with Azure tools and respond to alerts.
• Coordinate deployments via CI/CD and release management.
• Collaborate with development, infra and business teams to ensure stability.
• Participate in on-call rotations and incident response.
• Identify automation opportunities to reduce manual work.
• Debug distributed systems and troubleshoot microservices.
• Optimize SQL Server queries and performance.
• Manage source changes with Git and GitHub workflows.

Skills

.NET Core

ASP.NET Core

C# development

Azure

Docker

Kubernetes (AKS)

Azure DevOps

Git / GitHub

Tools

Azure DevOps

CI/CD pipelines

Job description

.NET Core & Azure L3 Support Engineer - Contract

Location: Wroclaw

Contract Type: 6 Months

Company Overview

Our client operates within the technology sector, delivering enterprise-grade applications that support critical business operations. They maintain a strong focus on cloud-native solutions built on Microsoft Azure, working with distributed systems and modern development practices. The organisation values technical excellence, continuous improvement and collaborative problem-solving, creating an environment where engineers can develop their skills across both development and operational disciplines.

They are seeking an experienced .NET Core & Azure L3 Support Engineer to join their team in Wroclaw on a contract basis. This role offers the opportunity to work with sophisticated cloud applications whilst developing expertise in production support, incident management and application performance optimisation.

Position Overview

As an L3 Support Engineer, you'll provide critical technical support for enterprise applications built on .NET Core and hosted on Microsoft Azure. You'll tackle complex production incidents, conduct thorough root cause analysis, and implement lasting solutions that improve application stability and performance. This role combines hands-on development skills with operational expertise, requiring you to monitor application health, support deployment activities, and identify automation opportunities that enhance support efficiency. You'll work within defined SLAs, participating in on-call support to ensure continuous availability of business-critical systems.

Responsibilities

• Resolve complex production incidents affecting applications built on .NET Core and Azure

• Investigate performance bottlenecks and implement fixes to improve application efficiency

• Conduct detailed root cause analysis following incidents to prevent future occurrences

• Maintain and enhance applications using .NET Core, ASP.NET Core, C# and Web APIs

• Track application health using Azure monitoring tools and respond to alerts

• Coordinate deployment activities through CI/CD pipelines and release management processes

• Work alongside development, infrastructure and business stakeholders to maintain system stability

• Respond to critical incidents during on-call rotations within agreed service levels

• Discover opportunities to automate repetitive tasks and reduce manual operational work

• Debug distributed systems and troubleshoot issues across microservices architecture

• Optimise database queries and improve SQL Server performance

• Manage source code changes using Git and GitHub workflows

Requirements

• 6-8 years of experience working with .NET technologies and cloud platforms

• Strong proficiency in .NET Core, ASP.NET Core and C# development

• Hands-on experience building and supporting REST APIs and microservices

• Demonstrated expertise with Azure App Services, Azure Functions and Azure Storage

• Working knowledge of Azure Key Vault, Azure Service Bus and Azure Monitor

• Experience with Azure DevOps, CI/CD pipelines and release management

• Proven ability to troubleshoot applications through log analysis and debugging

• Solid understanding of distributed systems and cloud-native application design

• Practical experience with SQL Server including performance tuning

• Familiarity with incident, problem and change management frameworks

• Strong analytical and problem-solving capabilities

• Excellent communication skills for cross-team collaboration

• Experience with Docker and Kubernetes (AKS) for containerised applications (preferred)

• Knowledge of Site Reliability Engineering practices and observability tools (preferred)

• Understanding of Azure security, identity management and governance (preferred)

• Exposure to ServiceNow and ITIL-based support processes (preferred)

• Familiarity with AI-assisted development tools such as GitHub Copilot (preferred)

Benefits

Whilst specific benefits information has not been provided, you'll work within a technically challenging environment that values continuous learning and professional development. You'll gain exposure to enterprise-scale Azure infrastructure, modern development practices and cross-functional collaboration. This contract position offers the chance to deepen your expertise in both development and operational disciplines, working with distributed systems and cloud-native technologies that are shaping the future of enterprise applications.