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Middleware Administrator (WebSphere Liberty)

Lisboa

Descrição da posição

We are looking for a Middleware Administrator with solid experience in IBM WebSphere to join a critical operations team within the financial services sector, operating in a hybrid model (3 days on-site / 2 days remote).

The team is responsible for the administration and technical support of all Application Servers in the environment, as well as the IBM API management platform. A strategic migration from WebSphere Application Server ND (WAS ND) to WebSphere Liberty is currently underway, and the new team member will play a key role in this transition.

The challenge will be…

  • Administer, configure and maintain IBM WebSphere Application Servers (WAS ND and Liberty)
  • Actively contribute to the ongoing migration from WAS ND to WebSphere Liberty
  • Administer additional Application Servers in the environment (JBoss, WebLogic)
  • Ensure availability, performance and integrity of all middleware services
  • Analyse and resolve anomalies and incidents in application services
  • Monitor metrics and build/maintain alerting systems using Prometheus and Grafana
  • Develop and maintain operational automations using Ansible and Shell Scripting
  • Configure and manage log pipelines with ELK Stack (Elasticsearch, Filebeat, Logstash)
  • Periodically review configurations to ensure product integrity and optimisation
  • Participate in 24x7 on-call rotation (remote intervention via VPN)


Requirements

  • Proven experience in WebSphere Liberty administration — mandatory
  • Solid experience in WebSphere Application Server ND (WAS ND) administration
  • Strong Linux system administration skills
  • Experience with Ansible for operational automation (playbook creation and maintenance)
  • Shell Scripting (Bash)
  • Git — version control
  • Prometheus + Grafana — monitoring and alerting
  • Experience in mission-critical / high-availability environments
  • Strong troubleshooting and analytical skills
  • Availability for 24x7 on-call rotation

Nice to have

  • JBoss / Red Hat JBoss EAP
  • WebLogic
  • ELK Stack — Elasticsearch, Filebeat, Logstash
  • Grafana Mimir
  • IBM API Connect / API Gateway
  • AIX (Unix)
  • Experience in middleware migration projects
  • Degree in Computer Science or related field


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