For our costumer, we are looking for a Tier 3 Operations Specialist (m/f/d) Network Security.

Capacity: Full-time

Start: 05/2026

End: 12/2026 + Option

Tasks:

Provide Tier-3 operational ownership for Network & Security services for Local Production (DE).

Tasks:

- Executing and improving standard operational procedures through automation (reduce toil, improve MTTR and stability).

- Technical coordination with Kubernetes/Data and Network/Storage SMEs to resolve cross-domain production issues.

- Resolving complex connectivity and security-related incidents; drive RCA and remediation across network/security stack.

- Ensuring operational readiness for network/security changes

- Monitoring/alerting, validation steps, rollback strategies, runbooks, and maintenance procedures.

- Consulting on compliance-relevant operational controls (logging/monitoring evidence, access enforcement patterns, vulnerability handling coordination).

- Coordinate with platform/Kubernetes teams to resolve cluster and application impacts caused by network/security constraints.

Ensure operational readiness for deployments

Tasks:

- Validation of deployment artifacts from an operations perspective.

- Defining and enforcing quality assurance measures (e.g. required documentation of standard operation procedures, successful test reports, …) to ensure the high quality of delivered products and services.

- Ensuring rollback strategies and operational monitoring (observability) are in place for production deployments.

Monitoring, Incident, Problem and Change Management in the specific context of providing Network & Security

Ensure operational stability and responsiveness for the managed Network & Security

Tasks:

- Monitoring system health, performance metrics, and service availability across multi-tenant environments.

- Identifying, analyzing, and resolving incidents, minimizing service disruption.

- Triggering root cause analysis and implementation of corrective and preventive actions.

Automation of operations critical standard processes

Reduce operational toil and improve service reliability

Tasks:

- Addressing of recurring operational issues by automating remedial standard operations processes

- Validation of all automated procedures following the established software development lifecycle including staging, testing, and validation reviews

Security and Compliance Enforcement

Objective: Ensure platform operations adhere to security and compliance standards

Tasks:

- Implementing monitoring and logging strategies to support audit and compliance requirements.

- Performing routine security scans and remediating identified vulnerabilities.

Profile Requirements

The contractor must be a senior level professional with proven experience in operations management of private cloud solutions, proficiency in managing Network & Security on the platform with following experience:

Must-have experience

- 5+ years operating enterprise networks in private cloud / data center production.

- Proven experience implementing/leading Incident, Problem, Change, Release governance in production. Proven incident response and troubleshooting skills across routing, firewalling, connectivity, and service exposure patterns.

- Experience within the field of security fundamentals and operational enforcement in production contexts

- Experience in Networking: WAN/LAN, routers, firewalls (enterprise operations).

- Connectivity services: Tenant private networking / connectivity patterns supporting production platforms.

- Expertise and fundamental understanding of core operations processes (incident management, change management, problem management, IT Service Management) as well as SRE concepts

- Experience in DNS & certificates: DNS operations and certificate lifecycle handling (issuance/renewal/rotation coordination).

- ITSM tooling: Jira Service Management (JSM), Jira, Confluence (for workflow and documentation).

- Experience in gathering operational insights from monitoring or observability including SLI/SLA/SLO management and tracking.

- Hand-on experience in documenting procedures properly and enforcing clear runbooks or playbooks.

- Observability Hands-on experience with monitoring and logging tools (e.g., Prometheus, Grafana, Datadog, Mimir, Loki).

- Familiarity with enterprise DevOps toolchains is a plus (GitLab, JFrog Artifactory, Backstage, Harness).

- Strong understanding of modern platform operations (Kubernetes/containers, automation, observability), sufficient to govern specialists.

- Platform delivery concepts: GitOps and IaC awareness (Terraform/OpenTofu, ArgoCD, Helm) to govern deployment/readiness standards.

- Expertise in root cause analytics and troubleshooting

Must-have language skills:

- Proficiency in both speech and writing in English (at least C1).

- Proficiency in both speech and writing in German(at least C1).

Preferred experience

- Experience operating in regulated / high-availability industries (banking, telco, public sector, healthcare).

- Experience with enterprise ITSM and change governance in regulated environments.

- Experience with SRE practices (SLOs/SLIs, error budgets) and reliability management.

- IaC/GitOps: Terraform/OpenTofu; Helm/ArgoCD familiarity helpful when network/security configuration is deployed via pipelines.