Middleware Administration & Operations Lead PO

WERE HIRING: MIDDLEWARE ADMINISTRATION & OPERATIONS LEAD IN POLAND!

Excis is a global IT support leader driven by innovation collaboration and excellence.

We are hiring a Middleware Administration & Operations Lead to manage and optimise middleware platforms supporting application deployment integration and runtime environments. You will ensure performance stability and security across web/app servers and messaging systems while driving modernisation through automation containerisation and cloud adoption.

About us:

• Client presence in 190 countries
  
• 6000 engineers globally
  
• Trusted by 200 enterprise clients
  

We foster an open friendly and collaborative culture where individual contributions drive team success. From solving complex infrastructure challenges to enabling modern application platforms we put our people first.

Key Responsibilities:

• Lead the deployment configuration upkeep and optimisation of enterprise middleware platforms (MS IIS IBM WebSphere IBM MQ Tomcat Apache).
  
• Ensure operational health and performance of middleware instances runtime environments and hosted applications.
  
• Perform middleware performance tuning JVM optimisation thread/heap tuning connection pool tuning MQ channel tuning.
  
• Oversee middleware version upgrades patching cycles vulnerability remediation and lifecycle management.
  
• Ensure compliance with security policies including TLS enablement hardened configurations and access control.
  
• Troubleshoot middleware outages performance degradation application routing problems and integration failures.
  
• Manage integration with load balancers work with Network Security and Network Data teams on supporting WAF DNS certificates and application routing infrastructure.
  
• Maintain detailed documentation of middleware architectures topologies and configuration baselines.
  
• Collaborate with application development teams on deployment patterns middleware integration and performance concerns.
  
• Lead middleware capacity and utilisation reviews and plan for scaling and optimisation.
  Support governance reporting and service review meetings for middleware services.
• Ensure audit readiness through proper configuration logging access reviews and control enforcement.
  
• Drive improvements in middleware deployment automation configuration management and standardisation.
  
• Manage relationships with middleware vendors and coordinate support cases and escalations.
  
• Mentor and guide L2 Middleware Analysts; contribute to operational knowledge base. Organize an On-Call rota for this area.
  
• Support application onboarding integration testing environment preparation and pre-production readiness.
  
• Support business continuity planning and DR (Restore) tests for middleware platforms.
  
• Ensure secure disposal/decommissioning of middleware assets and outdated components.
  
  

Required Skills & Qualifications:

• Expertise with MS IIS IBM WebSphere IBM MQ Tomcat Apache administration patching and configuration.
  
• Strong middleware performance tuning:
  JVM settings
  thread pools
  garbage collection
  connection pools
  MQ channels & queues
• Experience integrating middleware with load balancers (NetScaler/F5) WAF and DNS for application routing.
  
• Strong understanding of TLS cipher suites certificate binding PKI and secure endpoint configuration.
  
• Experience with observability and monitoring for middleware: logs metrics alerts tracing.
  
• Understanding of middleware security controls authentication mechanisms and access management.
  
• Knowledge of messaging and integration patterns with IBM MQ JMS or enterprise integration services.
  
• Experience with migration and consolidation of middleware environments.
  Familiarity with containerisation and cloud-based middleware (WebSphere Liberty Tomcat on Kubernetes).
• Ability to troubleshoot complex application runtime issues and collaborate with development teams.
  
• Skills in scripting and automation (PowerShell Bash Python Ansible).
  
• Experience with compliance license management and vendor engagement.
  
• Strong mentoring and people leadership for middleware L2 analysts.
  

Why Join Us

At Excis your work has a direct impact. Youll be part of a dynamic and hands-on team where your technical expertise drives user satisfaction and operational success.

We offer:

• A collaborative and supportive work environment
  
• Opportunities for continuous learning and career growth
  
• Exposure to diverse technologies and global clients