🚀 Freelance Application Engineer / Administrator (L3 Expert)

We are seeking an experienced Application Engineer / Administrator to support enterprise application operations, administration, and continuous improvement in a large-scale international ICT environment.

📍 The Hague, Netherlands (nearsite, remote work with limited on-site presence)

📅 Start Date: 14 December 2026 (latest start: 8 February 2027)

⏳ Initial Duration: 160 working days (40h/week) with extensions up to July 2029

🔐 Security Clearance: EU CONFIDENTIAL

✅Requirements

• university degree
• minimum 9 years of relevant professional IT experience
• minimum 6 years supporting, deploying, and maintaining applications in medium-to-large IT environments
• minimum 5 years of Application Administration experience
• minimum 5 years working with Microsoft and/or Linux server environments
• minimum 2 years of experience with: elasticsearch administration and support, kubernetes, docker and containerized environments, public or hybrid cloud solutions (azure and/or AWS)

✅ Strong knowledge of:

• Elasticsearch cluster deployment and administration
• Kubernetes, Helm Charts, Docker, and Rancher
• Configuration management tools (Ansible, Puppet, Chocolatey or similar)
• PowerShell and/or Shell scripting
• ITIL processes (Incident, Change & Release Management)
• DevOps principles and practices

➕Nice to Have

• experience with PostgreSQL and/or MS SQL Server
• knowledge of Kong API Gateway
• additional Azure or AWS cloud expertise

✅Responsibilities

• install, configure, and administer applications in production and non-production environments
• monitor application availability, performance, and capacity
• support incident, problem, change, and release management activities
• administer Elasticsearch environments and container platforms
• automate operational and administration tasks
• create and maintain technical documentation, procedures, and knowledge articles
• contribute to service improvement and operational excellence initiatives