Senior Systems & Middleware Engineer — Paris On‑Site

SEIDOR; Paris; Sur place; EUR 90 000 - 120 000; Plein temps

Résumé du poste

SEIDOR in Paris is seeking a Senior Systems & Middleware Engineer to lead Linux/Windows server administration and middleware platforms. You will manage complex environments, coordinate with vendors, and drive uptime across development, testing, and production.

The role requires 15+ years of experience and fluency in English and French, with on-site work at the Paris premises. Join a large company with a startup spirit, delivering scalable infrastructure and integration for business applications

Qualifications

• More than 15 years of relevant professional experience.
• Strong experience administering enterprise Linux environments.
• Strong experience administering Windows Server environments.
• Experience maintaining highly available, stable and high-performance systems.
• Advanced troubleshooting and root cause analysis skills.
• Experience with operating-system patching and lifecycle management.
• Experience supporting virtualized environments and infrastructure components.
• Strong middleware administration, maintenance and upgrade experience.
• Experience with Microsoft IIS and Apache HTTP Server.
• Experience with JBoss application servers.
• Experience with Microsoft .NET Framework/.NET.
• Experience with Java Runtime Environment.
• Experience with reverse proxies and web application platforms.
• Experience with application integration components.
• Experience with scheduling and batch-processing platforms.
• Experience with web services and API platforms.
• Experience installing, configuring, testing and validating application releases and upgrades.
• Experience managing Development, Test, UAT and Production environments.
• Ability to monitor and optimize platform performance.
• Experience coordinating technical activities with vendors and service providers.
• Experience supporting corporate applications, such as HR, finance, collaboration, document-management and web applications.
• Professional proficiency in English and French.

Responsabilités

• Maintain and support enterprise Linux and Windows Server environments.
• Ensure the stability, availability, and performance of systems hosting business applications.
• Perform advanced troubleshooting and root cause analysis of complex technical incidents.
• Manage operating system patching and lifecycle activities.
• Support virtualized environments and associated infrastructure components.
• Maintain, troubleshoot, and upgrade middleware platforms including IIS, Apache, JBoss, .NET, Java, reverse proxy and web app platforms.
• Provide technical support and platform administration for HR, finance, document management and web applications.
• Install and configure new application releases and validate vendor upgrades.
• Monitor and optimize platform performance.
• Manage environments across Development, Test, UAT, and Production.
• Coordinate with vendors during maintenance activities.

Connaissances

Linux administration

Windows Server

Troubleshooting

Patching & lifecycle

Virtualization

Middleware administration

IIS

Apache HTTP Server

JBoss

.NET Framework/.NET

Java Runtime Environment

Formation

Bachelor’s degree in a relevant field

Outils

Microsoft IIS

Apache HTTP Server

JBoss

.NET Framework/.NET

Java Runtime Environment

Description du poste

SEIDOR in Paris is seeking a Senior Systems & Middleware Engineer to lead Linux/Windows server administration and middleware platforms. You will manage complex environments, coordinate with vendors, and drive uptime across development, testing, and production.

The role requires 15+ years of experience and fluency in English and French, with on-site work at the Paris premises. Join a large company with a startup spirit, delivering scalable infrastructure and integration for business applications