Application Support Engineer (C# / SQL)

Atos; Wrocław; Hybrid; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Hybrid work

Private medical care

Benefits platform

Conferences

Job summary

Atos is seeking a talented software support professional in Wrocław to investigate customer issues, analyze application behavior, and determine root causes. You will work with C#, SQL Server, and JavaScript to troubleshoot, reproduce, and fix defects, while coordinating with customers and internal teams through email and ticketing systems.

The role emphasizes understanding both technical implementation and complex business rules, with a hybrid working model and opportunities to grow through

Qualifications

• Good knowledge of C# and SQL Server with solid querying skills.
• Experience debugging and troubleshooting complex applications.
• Understanding of JavaScript and web tech basics.
• Familiarity with Git and version control workflows.
• Experience analyzing database-driven business applications.
• Understanding of software development lifecycle and defect management.

Responsibilities

• Investigate customer-reported issues and respond to support requests.
• Analyze application behavior and explain why the system produced a specific result.
• Determine whether issues are expected behavior or defects.
• Write and execute SQL queries to prepare reports and analyze data.
• Debug and analyze C# code to understand system logic and root causes.
• Reproduce issues in a local development environment.
• Investigate complex calculations (shift, hours, payroll) and missing results.
• Fix defects and perform testing before deployment.
• Collaborate with customers and internal teams via email and ticketing systems.
• Maintain understanding of technical implementation and business rules.

Skills

C#

SQL Server

JavaScript

Git

Debugging

Database applications

SDLC

Job description

About Atos Group

Atos Group is a global leader in digital transformation with 63,000 employees and annual revenue of €8 billion, operating in 61 countries under two brands—Atos for services and Eviden for products. The company is the European number one in cybersecurity, cloud and high performance computing. Atos Group is committed to a secure and decarbonized future, providing tailored AI‑powered, end‑to‑end solutions for all industries.

Key Responsibilities

• Investigate customer‑reported issues and respond to support requests.
• Analyze application behavior and explain to customers why the system produced a specific result.
• Determine whether reported issues are expected system behavior or genuine software defects.
• Write and execute SQL queries to prepare reports and analyze data.
• Debug and analyze C# code to understand system logic and identify root causes.
• Reproduce customer issues in a local development environment.
• Investigate complex calculation scenarios, including
  • Shift and roster processing
  • Working hours calculations
  • Payroll and export calculations
  • Missing or unexpected calculation results
• Fix application defects and perform testing before deployment.
• Collaborate with customers and internal teams primarily via email and ticketing systems.
• Maintain a strong understanding of both technical implementation and business rules.

Required Technical Skills

• Good knowledge of C#
• Good knowledge of SQL Server and advanced SQL querying
• Understanding of JavaScript
• Experience with Git
• Ability to debug and troubleshoot complex applications
• Experience analysing database‑driven business applications
• Understanding of software development lifecycle and defect management

Essential Personal Qualities

• Strong analytical and investigative mindset
• Enjoys solving complex problems and finding root causes
• Able to work independently with limited guidance
• Comfortable working with both code and customers
• Curious and persistent when troubleshooting difficult issues
• Strong written communication skills
• Ability to learn complex business rules and processes
• Detail‑oriented and methodical in approach

Benefits

• Wellbeing programs & work‑life balance
• Private medical and dental care
• Benefits platform – shopping, cinema, sport, etc.
• Co‑funding of sports activities
• Courses and certifications (e.g., Google Cloud, AWS, ITIL)
• Conferences and expert communities
• Gift packages for special occasions
• Additional days off for seniority and Atos Jubilee gifts
• Hybrid working mode (max. 2 times per month)
• Charity and eco initiatives