[TSO] Application Support Engineer L3 (Telco)

Project – the aim you’ll have

Our clients are the largest mobile network operators in Poland and in Europe. We deliver solutions and services that transform their networks and provide innovative services to millions of subscribers. We are looking for highly - skilled engineers to join our team and help us implement, deliver and maintain smooth operation of applications for our clients.

Position – how you’ll contribute

• Analysis and resolution of incidents escalated from L2 Support (3rd line support)
• Diagnosing application issues using logs, monitoring tools, and debugging techniques
• Reproducing defects and identifying root causes (application, database, integrations, configuration, user behavior)
• Implementing changes in subordinate systems

Expectations – the experience you need

• Minimum 2 years of experience in an Application Support / L2 Support role or similar, in high-availability production environments
• Hands-on experience with Kubernetes: deploying applications, updates and troubleshooting
• Experience in Linux environment administration (Rocky / RedHat / Debian)
• Good knowledge of a TCP / IP protocol stack
• Knowledge of Gitlab CI/CD
• Knowledge of at least one scripting language (e.g. bash, perl, python)
• Knowledge of SQL and experience in SQL database administration (MySQL, PostreSql)
• English and Polish language at a level that allows for easy communication and creating documentation
• Availability to work in shift mode / on-call / 24x7

Additional skills – the edge you have

• Experience with configuration management and automation tools (Ansible or Terraform)
• Knowledge of VoIP protocols and LTE / 5G / IMS network architectures