Senior Middleware

Senior Middleware & On-Premises Operations Engineer

Location: Brussels, Belgium / Nearshore Europe
Employment type: Full-Time

We are currently looking for experienced Senior Middleware & On-Premises Operations Engineers to strengthen the Cronos Europa team and contribute to long-term IT operations projects for one of our international clients.

We are considering both onshore candidates based in Belgium and nearshore professionals based in Europe.

This is a senior-level opportunity for engineers who enjoy maintaining reliable, secure enterprise IT platforms, troubleshooting complex infrastructure issues and improving production environments through automation and continuous improvement.

Responsibilities:

• Install, configure, maintain and upgrade middleware platforms and commercial enterprise applications.
• Provide second- and third-line technical support, resolving incidents, service requests and complex production issues.
• Investigate recurring technical problems, perform root-cause analysis and implement effective solutions.
• Manage web and application servers, including Apache HTTP Server and Apache Tomcat.
• Administer and troubleshoot middleware running on Linux and Windows Server environments.
• Automate installations, configuration management, deployments and routine operations using Ansible and scripting.
• Contribute to CI/CD processes using Azure DevOps, Jenkins, Nexus or equivalent tools.
• Monitor infrastructure performance, availability and security, proactively identifying and resolving issues.
• Support containerised applications and platforms using Docker, Kubernetes, OpenShift or equivalent technologies.
• Collaborate with database teams on Oracle-related operational tasks, SQL troubleshooting and performance optimisation.
• Work closely with networking, infrastructure, security, development and database teams.
• Maintain technical documentation, operational procedures, troubleshooting guides and runbooks.

Technical skills:

• Middleware: Strong experience administering web and application servers, particularly Apache HTTP Server and Tomcat.
• Operating Systems: Advanced Linux administration skills, preferably Red Hat Enterprise Linux, and solid Windows Server experience.
• Automation: Experience with Ansible or equivalent configuration management tools, supported by Bash and PowerShell scripting.
• CI/CD: Experience with Azure DevOps, Jenkins, Nexus or comparable build and deployment technologies.
• Containers: Hands-on experience with Docker, Podman, Kubernetes or OpenShift.
• Networking: Good understanding of DNS, TLS/SSL, reverse proxies, firewalls and load balancing.
• Monitoring: Experience monitoring application and infrastructure performance, availability and reliability.
• IT Service Management: Experience with ServiceNow or equivalent ITSM tools, incident management and production support.
• Databases: Oracle Database administration, SQL, backup procedures, patching and performance troubleshooting are strong advantages.
• Cloud: Experience with Microsoft Azure and infrastructure as code, such as Terraform, is an advantage.
• Additional technologies: Experience with ESRI ArcGIS Enterprise, SAS, Oracle Data Integrator, Microsoft On-Premises Data Gateway or Grafana is a plus.

Profile:

• Bachelor's or Master's degree in Computer Science, Information Technology, Systems Engineering or a related field, or equivalent professional experience.
• Minimum 5 years of professional experience supporting and administering middleware or commercial enterprise products in production environments.
• Proven hands-on experience installing, configuring, upgrading and troubleshooting middleware and application servers.
• Strong understanding of Linux, Windows Server, networking and enterprise infrastructure environments.
• Experience provi