Senior Middleware & On-Premises Operations Engineer

Cronos Europa

1d • Hybrid

About The Position

Cronos Europa is seeking experienced Senior Middleware & On-Premises Operations Engineers to support long-term IT operations projects for an international client. The role focuses on maintaining reliable and secure enterprise IT platforms, troubleshooting complex infrastructure issues, and improving production environments through automation and continuous improvement. Candidates may work onshore in Belgium or nearshore elsewhere in Europe, subject to the specified mandatory on-site requirements.

The engineer will administer middleware and commercial enterprise applications across Linux and Windows Server environments, support production systems, contribute to deployment and automation practices, monitor platform performance and reliability, and collaborate with infrastructure, networking, security, development, and database teams. The role also includes maintaining operational documentation and supporting container platforms and Oracle-related operational work.

Onshore candidates must be based in Belgium and have valid authorisation to work there; the arrangement is hybrid with approximately 50% on-site presence in Brussels. Nearshore candidates must be based in Europe; the arrangement is primarily remote, with approximately 30 working days per year on-site in Brussels and flexibility in scheduling visits subject to project requirements.

Cronos Group offers a competitive compensation package aligned with experience and contract arrangement, long-term international project work, flexible working arrangements, exposure to complex enterprise environments, opportunities for professional development and technical growth, a collaborative working environment, and career development within the Cronos Group.

Requirements

• Bachelor's or Master's degree in Computer Science, Information Technology, Systems Engineering, or a related field, or equivalent professional experience.
• At least 5 years of professional experience supporting and administering middleware or commercial enterprise products in production environments.
• Hands-on experience installing, configuring, upgrading, and troubleshooting middleware and application servers.
• Strong experience administering web and application servers, particularly Apache HTTP Server and Tomcat.
• Advanced Linux administration skills, preferably Red Hat Enterprise Linux, and solid Windows Server experience.
• Experience with Ansible or equivalent configuration management tools, plus Bash and PowerShell scripting.
• Experience with Azure DevOps, Jenkins, Nexus, or comparable build and deployment technologies.
• Hands-on experience with Docker, Podman, Kubernetes, or OpenShift.
• Good understanding of DNS, TLS/SSL, reverse proxies, firewalls, and load balancing.
• Experience monitoring application and infrastructure performance, availability, and reliability.
• Experience with ServiceNow or equivalent ITSM tools, incident management, and production support.
• Experience providing second- and third-line support for business-critical production systems.
• Ability to work independently and collaborate effectively within an international technical team.
• Strong analytical thinking, troubleshooting skills, and attention to operational reliability and security.
• Experience improving operational processes through automation and technical documentation.
• Fluent written and spoken English is mandatory.
• Proactive attitude, ownership, and willingness to learn and support unfamiliar technologies.
• Onshore candidates must be based in Belgium and have valid authorisation to work in Belgium; nearshore candidates must be based in Europe.
• Compliance with the applicable mandatory on-site requirements: approximately 50% on-site in Brussels for onshore candidates or approximately 30 working days per year in Brussels for nearshore candidates.

Nice To Haves

• Oracle Database administration, SQL, backup procedures, patching, and performance troubleshooting.
• Experience with Microsoft Azure and infrastructure as code such as Terraform.
• Experience with ESRI ArcGIS Enterprise, SAS, Oracle Data Integrator, Microsoft On-Premises Data Gateway, or Grafana.
• French language skills.
• ITIL Foundation certification.

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 solutions.
• Manage web and application servers, including Apache HTTP Server and Apache Tomcat.
• Administer and troubleshoot middleware 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, and proactively identify and resolve 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 with networking, infrastructure, security, development, and database teams.
• Maintain technical documentation, operational procedures, troubleshooting guides, and runbooks.

Benefits

• Competitive compensation package aligned with experience and contract arrangement.
• Opportunity to contribute to long-term projects in an international environment.
• Flexible working arrangement combining remote collaboration with on-site interaction.
• Exposure to complex enterprise IT environments, middleware technologies, and infrastructure automation.
• Opportunities for continuous professional development and technical growth.
• Collaborative and supportive working environment that values expertise, initiative, and ownership.
• Career development within the Cronos Group.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior