Site Reliability Engineer (SRE) / Inżynier Niezawodności Systemów

PKO Leasing S.A. is a leader in the leasing market and part of the Capital Group of the Largest Bank in Poland. The company values partnership, development, and impact, which guide daily tasks and shape the organizational culture.

• Experience as SRE/Platform Engineer in large heterogeneous production environments
• Very good knowledge of Linux, TCP/IP networks, basic security, and HA/DR issues
• Practical skills in designing end-to-end monitoring (network/infrastructure/app)
• Experience with monitoring and observability systems (e.g., Prometheus, Grafana, ELK/EFK, Zabbix)
• Ability to analyze performance, capacity planning, and system tuning
• Experience with alerting, on-call duties, and conducting RCA/post-mortems
• Communication skills and ability to work cross-functionally with various teams

Nice to have:

• Experience administering Dynatrace application ecosystem
• Skills in using Zabbix, Grafana, Prometheus
• Experience with virtualization systems and computer networks
• Knowledge of cloud environment monitoring tools (Azure)
• Knowledge of scripting languages (e.g., Bash, Python)
• Certifications in monitoring or system administration

• Develop and optimize the existing IT infrastructure and cloud environment monitoring system
• Develop SRE practices: define and enforce SLO/SLI/SLA, error budgets, and reliability standards
• Ensure high availability, performance, and scalability of services (production and lower environments)
• Conduct incident analyses (RCA), post-mortems, and implement preventive actions
• Automate operations and eliminate manual work (IaC, CI/CD, self-healing, automatic incident responses)
• Collaborate with development and infrastructure teams on system reliability and observability
• Create technical documentation and share knowledge within the team