Lead Application Support Engineer| .Net| Stockholm, Sweden

Infosys; Stockholms kommun; On-site; SEK 700,000 - 1,100,000; Full time

Benefits offered by this job

Competitive compensation

Performance bonus

Learning culture and diverse teamwork

Job summary

Infosys in Stockholm, Sweden, seeks an Application Support Engineer specialized in .NET-based applications. You will proactively identify production issues using observability tools to reduce MTTD/MTTR and collaborate with cross-geo teams.

Flexibility for rotation shifts/on‑call support is required. The role sits in the CMTADM unit with a focus on ITIL/ITSM processes and robust incident handling.

Qualifications

• Minimum 3–5 years of hands-on experience in application support or similar roles.
• Strong knowledge of C#, .NET Framework/.NET Core and web technologies.
• Experience with SQL Server performance tuning and queries.

Responsibilities

• Provide L2/L3 production support for .NET applications and services.
• Monitor health and performance; troubleshoot incidents within SLA timelines.
• Analyze logs and RCA to implement permanent fixes for recurring issues.
• Develop and maintain web applications, APIs, and background services.
• Collaborate with business, product and engineering teams across geographies.
• Participate in on-call rotation and incident management.

Skills

C#

.NET Framework

.NET Core

ASP.NET MVC

Web APIs

SQL Server

Tools

ServiceNow

JIRA

Azure DevOps

Git

Splunk

App Insights

Job description

Role – .NET based apps, L2/L3 support

Technology –C#, .NET Framework, .NET Core, ITIL processes and ITSM tools (ServiceNow or equivalent), Monitoring & observability tools (APM, logs, alerts)

Location – Stockholm, Sweden

Business Unit – CMTADM

Compensation – Competitive (including bonus)

Your role

In the role of Application Support Engineer, you will be responsible for proactive identification of issues in production environment leveraging observability tools with the aim of reducing MTTD and MTTR. In the process, you will also be collaborating and working closely with business, product and engineering teams, across geographies. You will be part of a learning culture, where teamwork and collaboration are encouraged, excellence is rewarded, and diversity is respected and valued.

Flexibility to work in rotation shifts/on call support environment is required for this role.

Key Responsibilities

Application Development

• Design, develop, test, and maintain applications using C#, .NET Framework/.NET Core, ASP.NET MVC/Web API.
• Develop and enhance web applications, APIs, background services, and microservices.
• Write clean, scalable, and maintainable code following coding standards and best practices.
• Participate in requirements gathering, solution design, and technical discussions.
• Develop database objects including SQL queries, stored procedures, functions, and views.
• Perform unit testing, integration testing, and support UAT activities.
• Collaborate with business users, QA teams, architects, and other developers to deliver solutions.

Production Support

• Provide L2/L3 production support for .NET applications and services.
• Monitor application health, system performance, and production environments.
• Investigate, troubleshoot, and resolve application incidents within SLA timelines.
• Analyze application logs, error reports, and database issues to identify root causes.
• Perform root cause analysis (RCA) and implement permanent fixes for recurring issues.
• Support batch jobs, interfaces, APIs, and scheduled processes to ensure smooth operations.
• Participate in on-call support and major incident management activities.

Required Technical Skills

Core Technologies

• Strong experience in C#, .NET Framework, .NET Core
• ASP.NET, ASP.NET MVC, Web APIs
• SQL Server (T SQL, performance tuning, execution plans)

Application & Infrastructure

• IIS, Windows Server
• REST/SOAP web services
• Familiarity with Azure or AWS (App Services, VMs, monitoring – preferred)
• Logging & monitoring tools (App Insights, Splunk, ELK, etc.)

DevOps & Tools

• CI/CD pipelines (Azure DevOps, GitHub Actions, Jenkins – any)
• Source control: Git
• Ticketing tools: ServiceNow(or equivalent), JIRA, Azure DevOps

Preferred Skills

• Experience in telecommunication domain.
• Exposure to PowerShell scripting
• ITIL Foundation certification

Personal

Qualifications

Besides the professional qualifications, we respect and place equal importance to the candidate’s personality which facilitates success in customer environments. Few traits we look for are:

• High analytical skills
• A high degree of initiative, flexibility and adaptability
• High customer orientation
• Quality awareness
• Good verbal and written communication skills

About Infosys

Infosys is a global leader in next-generation digital services and consulting. We enable clients in 59 countries to navigate their digital transformation.

With over four decades of experience in managing the systems and workings of global enterprises, we expertly steer clients, in 59 countries, as they navigate their digital transformation powered by cloud and AI. We enable them with an AI‑first core, empower the business with agile digital at scale and drive continuous improvement with always‑on learning through the transfer of digital skills, expertise, and ideas from our innovation ecosystem. We are deeply committed to being a well‑governed, environmentally sustainable organization where diverse talent thrives in an inclusive workplace.