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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on production application support as the first technical contact point. Key technologies are SQL Server, Windows Server, IIS and the ability to read C#/.NET code. Responsibilities include Level 2 and 3 support, diagnosing issues via data, scheduled jobs, configurations and code analysis, executing SQL queries, managing services and logs, creating bug reports and handing issues to developers. Minimum 5 years of experience and advanced Polish and English are required. Offered benefits include private healthcare, a benefits cafeteria and learning programs.
from: 10 November 2026
to: 10 December 2026
salary not specifiedB2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:senior
working mode:hybrid • full office
Wrocław, Fabryczna
Requirements
Expected technologies
SQL
C#
Level 2 Support
Third-Line Support
AI
Windows Server
Our requirements
- Minimum 5 years of experience in Level 2 and Level 3 application support or similar troubleshooting roles
- Strong SQL skills, including writing diagnostic queries and managing SQL Agent jobs
- Solid experience with Windows Server and IIS, including configuration and event logs
- Ability to read and understand C#/.NET code and follow stack traces to identify faults
- Experience in writing clear and actionable bug reports with detailed information
- Advanced level of English and Polish
- Residency in Poland is required
Your responsibilities
- Providing Level 2 and 3 application support for production environments, ensuring rapid resolution of issues
- Diagnosing problems by analyzing data, scheduled jobs, configurations, and application code
- Writing and executing SQL queries to identify and troubleshoot issues in SQL Server
- Utilizing Windows Server and IIS knowledge to manage services, application pools, and logs
- Reading and understanding C#/.NET code to identify potential faults and follow stack traces
- Creating clear and actionable bug reports with steps to reproduce, log extracts, and suspected code locations
- Collaborating with developers to hand off issues with comprehensive information for resolution
- Maintaining thorough documentation of support activities and resolutions
About the project
We are looking for an experienced Application Support Engineer to join our team in Wroclaw. In this hybrid role, you will be the first technical point of contact for issues arising in customer production environments. Your responsibilities will include diagnosing problems related to data, scheduled jobs, configurations, and application code, ensuring swift resolutions or effectively handing off to developers. If you are passionate about troubleshooting and providing top-notch support, we encourage you to apply.
What we offer
- Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
- Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
- We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
- Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
- Comfortable workplace – class A offices or remote work
- Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
- PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
- Investment in your growth – meetups, webinars, training platform and technology blog – you choose
- Fantastic atmosphere created by all Sii Power People
Recruitment stages
- 1.Send your CV
- 2.Talk to us about your expectations
- 3.Learn more about our projects and choose the best
- 4.Start your adventure with Sii!
Sii Sp. z o.o.
Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.
Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.
This is how we work
Senior Application Support Engineer (f/m/x)
I apply to:
Sii Sp. z o.o.
Wrocław, Fabryczna
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