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System Administrator

MADIFF Polska · Warsaw, Masovian Voivodeship, Poland

3030

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System Administrator at MADIFF Polska. We’ll keep it in your applied jobs, so you can see it later and be warned before applying to the same employer twice.

We are looking for a Middleware & Systems Administrator to join our team on a long-term engagement inside a modern payments environment.

The team operates enterprise middleware, transaction processing services and supporting platforms that demand 24/7 reliability. You will focus on system administration, optimisation and incident resolution for middleware and database-backed services supporting critical financial workloads.

What you will do

  • Deploy, configure and maintain WebLogic middleware and Linux application servers
  • Perform routine database support tasks and optimise SQL queries against Oracle databases
  • Manage application lifecycle tasks: patching, releases, configuration changes, rollback plans
  • Monitor systems, investigate alerts, troubleshoot incidents and apply fixes or escalate appropriately
  • Maintain runbooks, SOPs and technical documentation for operational procedures
  • Automate tasks using Bash/Python scripting and automation tools (Ansible, Terraform where applicable)
  • Support backup, restore and disaster recovery procedures, including DR drills
  • Manage certificates, keys and basic network configurations
  • Collaborate with developers, DBAs, network and security teams on cross-domain issues
  • Participate in on-call rota and occasional out-of-hours maintenance windows
  • Contribute to performance tuning and capacity planning

Requirements

  • 2–3 years’ experience administering applications or databases in production environments
  • Hands-on experience with WebLogic administration (installation, domain management, tuning)
  • Strong Linux (Red Hat/CentOS/Oracle Linux) skills — services, logs, package management, networking
  • Working knowledge of Oracle DB and SQL query optimisation
  • Good troubleshooting skills, log analysis and root-cause investigation
  • Professional attitude to operational discipline and documentation
  • English at a working level

Nice to have

  • Exposure to Oracle DBA tasks (backups, tuning)
  • Familiarity with Docker/Kubernetes
  • Experience with Ansible, Python scripting, CI/CD for ops tasks
  • Exposure to Prometheus, Grafana, ELK/Elastic
  • Understanding of security & compliance in financial systems
  • Experience with ServiceNow or other ITSM tooling

Benefits

  • Solid, competitive salary.
  • Work in multilingual, multinational and multicultural environment on international projects
  • Medical care

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