Senior Infrastructure Engineer

About HCLTechHCLTech is a global technology company, spread across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. We re powered by our people a global, diverse, multi-generational talent - representing 161 nationalities whose unique spark, perspective and boundless passion drive our culture of proactive value creation and problem-solving.Our purpose is to bring together the best of technology and our people to supercharge progress for everyone, everywhere our clients, partners, their stakeholders, communities, and the planet. As a company, we are deeply focused on accelerating our ESG agenda. We are also creating technology-enabled sustainable solutions with and for our clients and partners. We embed ESG imperatives into every aspect of our business and ensure that the progress we supercharge is responsible, inclusive and beneficial to all our stakeholders in the long term. We have committed to achieving net zero by 2040.To learn more about how we can supercharge progress for you, visit www.hcltech.comJob Title: Senior Infrastructure & Hosting Technical Expert Location: Paris (50% on site, 50% remote) Years of relevant experience: +8 Language: French + English Overview: We are looking for a Senior Infrastructure & Hosting Technical Expert to ensure the stability, security, and evolution of critical production environments. This role involves managing complex infrastructures, driving modernization initiatives, and supporting automation and resilience projects. The position requires strong technical expertise, a collaborative mindset, and the ability to operate in high-stakes, mission-critical contexts. Responsibilities Oversee and maintain hosted infrastructures (servers, storage, backup, security, OS, VMware, Citrix, databases) in production environments. Design and implement infrastructure upgrades; produce technical documentation (DAT), procedures, and compliance reports. Ensure security and compliance: apply best practices, implement resilience measures (hardening, backup/restore, DR). Industrialize operational processes using automation tools and CI/CD pipelines for server provisioning and lifecycle management. Deploy dashboards and KPIs to monitor infrastructure health and optimize performance. Participate in technical committees, analyze requirements, and propose solutions aligned with business needs. Coordinate with onshore/offshore teams, lead operational changes, and provide Level 3 support. Mandatory skills: Advanced expertise in Linux (RedHat) and Windows Server; Active Directory and DNS administration. Virtualization & VDI: VMware ESXi and Citrix Virtual Apps & Desktops. Enterprise Storage (EMC, NetApp, PureStorage) Automation & CI/CD: GitHub, scripting (Shell, PowerShell, Python), and integration pipelines. ITIL Framework: Incident, problem, and change management. Performance Management: Monitoring tools and optimization techniques. Cloud Platforms: Good knowledge of Microsoft Azure and / or AWS Appreciated skills: Hands-on experience with public cloud platforms, ideally Microsoft Azure (AWS is also a plus). Knowledge of datacenter architecture and TOGAF principles. Familiarity with NIST/CIS security frameworks and automated compliance. Infrastructure as Code experience (e.g., Ansible). Ability to lead technical discussions, produce clear documentation, and collaborate effectively in global teams.