IT Infrastructure Security Engineer

Job Description: We are looking for an Infrastructure Security Engineer who will engineer and operate the technical security controls protecting Nexthink's corporate infrastructure, spanning non-cloud, cloud, and internal network environments. You will report to the Infrastructure Security Lead, executing the hardening, patching, cloud posture, and segmentation. Your main responsibilities will include: Contribute to hardening baselines across the VM fleet (Windows, Linux); Support security controls and initiative for Active Directory, Group Policy, and Microsoft Entra ID; Take part in patch automation, helping drive emergency patching coverage to SLA for critical CVEs; Contribute to cloud security posture management across Azure and AWS; Help implement and maintain policy-as-code for cloud configuration baselines, and support remediation of configuration drift; Help implement micro-segmentation policies and trust-model controls; Help validate east-west traffic flows and network security control compliance against corporate standards; Maintain patch, vulnerability, and configuration evidence to support compliance and certification audits; Track and help remediate assigned exceptions and audit findings within defined timelines; Take part in internal and external security audits, including evidence gathering, auditor coordination, and control walkthroughs . Qualifications: * 4+ years in infrastructure or security engineering, with exposure to both non-cloud and cloud environments; * Experience hardening Windows Server, Linux, and VMware vSphere; * Working experience with Active Directory, Group Policy, and Microsoft Entra ID; * Experience with Azure/AWS security controls; * Scripting fluency in Python, PowerShell, or Bash; * Experience with Infrastructure as Code, such as Terraform or Ansible; * Knowledge of GitHub and GitHub Actions for CI/CD pipelines, with a notion of HashiCorp Vault for secrets management; * Familiarity with vulnerability management platforms, cloud security certification (Azure/AWS), and ISO/SOC 2 Type 2/FedRAMP exposure are a plus; * Professional level of spoken and written English, Spanish is a plus. Additional Information: We are the pioneers and trailblazers of a global IT Market Category (DEX) that is shaping the future of how the world works, giving our customers’ IT Teams total digital visibility across their enterprise. Our innovative solutions integrate real-time analytics, automation, and employee feedback across all endpoints. This enables our IT teams to solve complex technical challenges, create ever more productive workplaces, and deliver happy, satisfied employees in the digital workplace. With over 1000 employees across 5 continents, Nexthink operates as One Team, connecting, collaborating and innovating to continuously grow. We call our employees ‘Nexthinkers’ and our commitment to diversity, inclusion, and equity is second to none. We currently have over 75 nationalities working with us, from all cultures and backgrounds, speaking many different languages. If you are looking for a change and like a nice atmosphere, lots of challenges, and having fun while working, this is a great opportunity for you! Check what we offer: Permanent Contract and a competitive compensation package. Amazing centrally located offices near the Bernabeu Stadium. Private Health Insurance (Sanitas) and daily meal vouchers of 11 EUR. Hybrid work model balancing office and remote work. Flexible Hours and unlimited vacation plus 3 company-paid volunteer days. Up to 25 EUR per month for a gym subscription. Flexible compensation plan for childcare & public transportation. Reimbursement of up to 50% of the cost of English & Spanish classes. Fresh fruit, cookies, and soft drinks in the office. Regular company and team events like Pizza talks, Team Building activities, Christmas parties, hosting Meetups at the office and more! Bonuses for referring successful hires after three months of continuous employment. The base salary for this is €33,000 – €49,000 gross per year, with a total on-target earnings (OTE) range of €36,000 – €54,000 including an annual performance bonus. We set our pay ranges using objective criteria: the scope and level of the role, the skills it takes to do it well, and the relevant market data. Ranges are reviewed every year to remain competitive and fair.