Application Support Engineer (C# / SQL)

Atos SE; Wrocław; On-site; PLN 100,000 - 160,000; Full time

Benefits offered by this job

Wellbeing programs

Private medical care

Dental care

Sports subsidies

Certifications programs (Google Cloud,

Conferences

Gifts for special occasions

Seniority days off

Hybrid work

Eco initiatives

Job summary

Atos SE is seeking a technically minded Application Support Engineer to join a team that supports a workforce management and shift scheduling application. The role combines customer communication, troubleshooting, SQL analysis, code investigation, and bug fixing across the full support lifecycle.

You will debug C# code, write SQL queries, and collaborate with customers and internal teams. The hybrid work model supports a balance between onsite and remote work as needed.

Qualifications

• Proficient in C# and able to debug complex applications.
• Experience with SQL Server and writing advanced SQL queries.
• Experience with Git version control and code reviews.
• Ability to troubleshoot and diagnose issues in complex database-driven apps.
• Understanding of software development lifecycle and defect management processes.
• Able to analyze application behavior and explain outcomes to customers.

Responsibilities

• Investigate customer-reported issues and respond to support requests.
• Analyze application behavior and explain why the system produced a given result.
• Determine if issues are expected behavior or defects.
• Write and execute SQL queries to prepare reports and data.
• Debug and analyze C# code to identify root causes.
• Reproduce customer issues in a local development environment.
• Shift and roster processing.
• Working hours calculations.
• Payroll and export calculations.
• Fix defects and perform testing before deployment.
• Collaborate with customers and internal teams via email and tickets.
• Maintain understanding of technical implementation and business rules.

Skills

C#

SQL Server

Advanced SQL

Git

Debugging

SDLC & defect mgmt

Tools

Git

Job description

Atos Group is a global leader in digital transformation with c. 63,000 employees and annual revenue of c. €8 billion, operating in 61 countries under two brands — Atos for services and Eviden for products. European number one in cybersecurity, cloud and high performance computing, Atos Group is committed to a secure and decarbonized future and provides tailored AI‑powered, end‑to‑end solutions for all industries. Atos Group is the brand under which Atos SE (Societas Europaea) operates. Atos SE is listed on Euronext Paris.

The purpose of Atos Group is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.

We are looking for a technically minded Application Support Engineer to join a team responsible for supporting a work‑force management and shift scheduling application. The application processes employee schedules, calculates working hours, and generates data exports used by customers.

This is a hands‑on technical support role that combines customer communication, troubleshooting, SQL analysis, code investigation, and bug fixing. Unlike organizations with separate 1st, 2nd, and 3rd line support teams, our engineers are responsible for the entire support lifecycle—from customer contact through root cause analysis to implementing code fixes when required.

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 analyzed data.
• Debug and analyze C# code to understand system logic and identify root causes.
• Reproduce customer issues in a local development environment.
• Shift and roster processing
• Working hours calculations
• Payroll and export calculations
• 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
• 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
• Enjoy 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
• Ability to learn complex business rules and processes
• Detail‑oriented and methodical in approach

What’s in it for you?

• Wellbeing programs & work‑life balance - integration and passion‑sharing events
• Private medical and dental care
• Co‑funding of sports activities, e.g. Multisport & OK system cards, b‑active program
• Courses and certifications e.g. Google Cloud, AWS, ITIL
• Conferences and Expert Communities
• Gift packages for special occasions: Easter, Christmas, Children’s Day
• Appreciation for seniority: additional days off, Atos Jubilee gifts
• Hybrid working mode (max. 2 times per month based on a location)
• Charity and eco initiatives

What happens next?

• Quick conversation with HR
• Interview with a Manager/IT expert/project representative

Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria. Find out more on our CSR commitment.