Application Support Engineer – .NET

N Consulting Global; Poland; On-site; PLN 140,000 - 190,000; Full time

Job summary

N Consulting Global is seeking a Support Engineer to join our IT operations. You will provide Level 2/3 support for .NET 10 applications and SQL Server, triaging incidents and handling ServiceNow tickets. You will implement minor enhancements during sprints, troubleshoot REST-based integrations, and collaborate with development, DB and infrastructure teams.

Experience with Azure DevOps or Jira is a plus. Bachelor’s degree preferred; 5+ years in .NET 10 app support; strong SQL skills; ability to

Qualifications

• Hands-on .NET 10 development/support experience.
• Proficient with Microsoft SQL Server (T-SQL, performance tuning, stored procedures).
• Practical experience with ServiceNow (incident/change/problem management).
• Experience troubleshooting web applications in production.
• Experience with SQL and relational databases.
• Experience with debugging tools, application logs, and performance analysis.
• Good incident-management and communication skills.

Responsibilities

• Provide Level 2 and Level 3 application support. Triage, investigate, and resolve production incidents within SLA timelines.
• Manage production incidents and service requests in ServiceNow; keep tickets updated and communicate status to stakeholders.
• Implement small enhancements, bug fixes, and hotfixes in .NET 10 applications as part of agile sprints or ad-hoc requests.
• Support applications developed using .NET 10, jQuery and SQL Server.
• Diagnose and resolve SQL Server issues: writing queries, performance investigation, and supporting DB deployments.
• Perform root-cause analysis and prepare permanent fixes or workarounds.
• Develop minor enhancements, bug fixes, and configuration changes.
• Support REST-based integrations and troubleshoot API-related issues.
• Collaborate with development, database, infrastructure, and business teams.
• Prepare technical documentation, knowledge articles and support procedures.
• Participate in on-call or shift-based support, if required.

Skills

.NET 10

SQL Server

Incident management

Communication skills

On-call support

Web app troubleshooting

REST & SOAP

Debugging tools

Education

Bachelor’s degree in Computer Science or IT

Tools

ServiceNow

Azure DevOps

TFS

Jira

Splunk / monitoring tools

AppDynamics

Dynatrace

Angular

React

Job description

• We are seeking a Support Engineer (.NET 10 / SQL Server) to join our support team and work closely with agile delivery squads. The role focuses on incident triage and resolution, ServiceNow-based ticket management, and implementing small enhancements using ADO or Jira.

Key Responsibilities

• Provide Level 2 and Level 3 application support. Triage, investigate, and resolve production incidents and service requests within SLA timelines.


• Manage production incidents, service requests, and problem records in ServiceNow; keep tickets updated and communicate status to stakeholders.


• Implement small enhancements, bug fixes, and hotfixes in .NET 10 applications as part of agile sprints or ad-hoc requests.


• Support applications developed using .NET 10, jQuery and SQL Server


• Diagnose and resolve SQL Server issues: writing queries, investigating performance, and supporting DB deployments.


• Perform root-cause analysis and prepare permanent fixes or workarounds.


• Develop minor enhancements, bug fixes, and configuration changes.


• Support REST-based integrations and troubleshoot API-related issues.


• Collaborate with development, database, infrastructure, and business teams.


• Prepare technical documentation, knowledge articles and support procedures.


• Participate in on-call or shift-based support, if required.

Mandatory Skills

• Hands-on development/support experience with .NET 10 (C#).


• Proficient with Microsoft SQL Server (T-SQL, performance tuning, stored procedures, troubleshooting).


• Practical experience with ServiceNow (incident/change/problem management and basic admin/configuration).


• Experience troubleshooting web applications in production.


• Expertise in SQL and relational databases.


• Experience with debugging tools, application logs, and performance analysis.


• Good incident-management and communication skills.

Secondary Skills

• Experience with cloud platforms (Azure) and related services.


• Good understanding of Insurance domain.


• REST and SOAP web services.


• IIS administration and deployment troubleshooting.


• Entity Framework or equivalent ORM technology.


• Windows services and scheduled jobs.


• Azure DevOps, TFS, or similar source-control and deployment tools.


• Familiarity with CI/CD pipelines and deployment processes (Azure DevOps pipelines preferred).


• Familiarity with monitoring tools such as Splunk, AppDynamics, Dynatrace, or equivalent.


• Familiarity with Angular, React.

Experience and Qualifications

• 5+ years of experience in .NET 10 application development or application support.


• Experience supporting enterprise applications in production.


• Experience working in ITIL-based support environments.


• Bachelor’s degree in Computer Science, Information Technology, or a related discipline is preferred.