L2 Application Support Engineer (f/m/x)

Sii Polska; Warszawa; Hybrid; PLN 110,000 - 170,000; Full time

Job summary

Sii Polska in Warsaw is seeking an experienced Application Support Engineer to join a long-term technology team that supports business-critical applications in a high-availability environment. You will combine technical troubleshooting with a reliability-focused approach, working closely with engineering, platform, and infrastructure teams to ensure continuous operations.

The role is based in Warsaw with a hybrid model (3 days in the office) and includes participation in a 24/7 on-call rotation

Qualifications

• Experience as an Application Support Engineer in a high-availability environment.
• Ability to troubleshoot technically and apply reliability-focused approaches.
• Interest in developing toward a senior reliability and operational engineering path.

Job description

We are looking for an experienced Application Support Engineer to join a long-term technology team supporting business-critical applications in a high-availability environment.

You will combine technical troubleshooting with a reliability-focused approach, working closely with engineering, platform, and infrastructure teams. The role also offers an opportunity to develop toward a senior reliability and operational engineering path.

The position is based in Warsaw and follows a hybrid model with 3 days per week in the office, as well as participation in a 24/7 on-call rotation.