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System Administrator

icon building Company : Madiff Polska
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Job Description - System Administrator


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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