IT Infrastructure and Security Engineer

Engineering Posted July 2, 2026 at 11:00 PM

Company

Location

Berlin

Type

professional / experienced

Commensurate with experience

• A motivated individual
• Comfortable working across a distributed multi-region environment
• Junior-to-mid-level role

Zentso S GmbH is a dynamic technology company building and operating Cloud Toolz, a revenue‑critical SaaS platform layered on top of iMIS RiSE association management software. Our platform delivers essential workflow automation, form building, CRM, CMS, and payment processing capabilities to organizations across the UK, Europe, United States, and Asia Pacific, serving diverse sectors with robust, scalable solutions.

We are actively seeking a highly motivated IT Infrastructure and Security Engineer to join our team in a hands‑on, junior‑to‑mid‑level role. You will play a pivotal part in supporting the global infrastructure and enhancing the security posture that underpins both the Cloud Toolz platform and Zentso's internal systems. Working closely with the IT Infrastructure and Security Lead and the CTO, this position offers a unique opportunity to contribute directly to the uptime, security, and compliance outcomes of a critical production platform.

A significant focus for this role involves assisting with our ongoing migration towards a containerised, Kubernetes‑based deployment model and helping to establish a comprehensive observability practice utilizing Grafana OSS. You will be instrumental in day‑to‑day operations, executing vital security tasks, and developing automation scripts, making a tangible impact within our distributed, multi‑region environment.

• Manage global infrastructure spanning Windows Server 2022, SQL Server, MongoDB, Redis, and Cloudflare across four regions, ensuring the availability, performance, and scalability of the Cloud Toolz platform.
• Support deployments of new Cloud Toolz releases (ASP.NET Core, integrating with Dynamics, iMIS, Salesforce, and native CRM/CMS).
• Contribute significantly to the Kubernetes migration, including cluster operations such as deployments, scaling, network policies, and Role‑Based Access Control (RBAC).
• Help build and maintain a Grafana OSS observability stack, encompassing dashboards, alerting, and integration with metrics, logs, and traces.
• Assist with DNS, CDN, WAF, and DDoS protection via Cloudflare; monitor system performance and participate in incident response and recovery.
• Maintain comprehensive documentation, runbooks, and disaster recovery procedures.
• Develop shell scripts and small infrastructure‑related applications (automation tools, monitoring utilities, internal dashboards) in coordination with the Infrastructure Lead.

• Support identity and access management, endpoint protection, and vulnerability management.
• Help administer policies across Microsoft 365, Bitwarden, Bitdefender Gravity Zone, and Know Be
  4.
• Contribute to GDPR/ISO 27001‑aligned data protection policies, security awareness training, phishing simulations, and threat monitoring/response.

• Support Microsoft 365 administration (Exchange Online, SharePoint, Teams, Entra ) and Salesforce administration for internal business systems.

• A motivated individual with a proactive approach to IT infrastructure and security challenges.
• Comfortable working hands‑on in a distributed, multi‑region environment.
• Possesses junior‑to‑mid‑level experience in IT infrastructure and security roles.
• A strong desire to contribute directly to uptime, security, and compliance outcomes for a production SaaS platform.