Infrastructure & Systems Engineer

Your journey
We are looking for an experienced System Administrator to help operate, maintain, and improve our infrastructure. Our current environment is primarily datacenter-based, and we are gradually transitioning to a hybrid setup that integrates AWS cloud services.

In this role, you will be responsible for the availability, scalability, and security of our systems and networks. You will work hands-on with Linux servers, networking equipment, and cloud platforms, ensuring smooth day-to-day operations, reliable deployments, and secure access for our teams.

This is a hands-on technical role, ideal for someone with strong problem-solving skills and deep knowledge of system and network administration who enjoys keeping complex infrastructures stable and efficient.

Key Responsibilities

• Operate and maintain Linux-based systems in our datacenter and AWS cloud.
• Administer networking components, including routing, VPNs, firewalls, and secure remote access.
• Manage Kubernetes clusters, ensuring availability, scalability, and smooth deployments.
• Apply infrastructure-as-code practices using tools such as GitLab, Terraform, and Ansible.
• Maintain and improve monitoring, logging, and alerting systems (e.g., Prometheus, Grafana, Zabbix, New Relic).
• Support development and product teams with infrastructure-related needs.
• Contribute to incident response, troubleshooting, and on-call duties.
• Establish incident response strategies and contribute to on-call procedures.
• Ensure compliance with internal security and operational policies (e.g., GDPR, data protection).
• Evaluate and maintain third-party tools, hardware, and services..

We look for

• 5+ years of experience in system and/or network administration.
• Solid knowledge of Linux server administration (Ubuntu preferred).
• Experience with datacenter operations and exposure to AWS cloud services.
• Hands-on experience managing Kubernetes in production environments.
• Strong networking skills (TCP/IP, VPNs, routing, switching, firewalls).
• Practical experience with automation tools (Terraform, Ansible, GitLab CI/CD).
• Experience with monitoring/alerting tools (Prometheus, Grafana, Zabbix, New Relic).

Nice to have would be

• Experience with Rancher for Kubernetes cluster management.
• Familiarity with Foreman and/or Puppet for provisioning and configuration.
• Knowledge of service meshes (e.g., Istio).
• Background in IT security or compliance (e.g., ISO 27001, SOC 2, GDPR).
• Experience with CI/CD pipelines and GitOps workflows.
• Relevant certifications such as AWS Solutions Architect, Certified Kubernetes Administrator (CKA), and/or CCNP.

Tech Stack
Operating Systems

• Ubuntu

Databases & Queues

• MariaDB
• ElasticSearch
• Redis
• RabbitMQ

Web & Proxy Services

• Nginx

Orchestration & Automation

• Kubernetes
• Terraform
• Ansible, AWX
• RKE (Rancher Kubernetes Engine)
• Rancher
• GitLab CI/CD
• Mesos / Marathon

Monitoring & Observability

• Zabbix
• Prometheus
• Graphana
• New Relic

What We Offer

• Everything you need to do a great job (MacBook etc.)
• Free weekly German classes to help you adjust to Berlin life.
• Wellpass gym access and a lot of other perks.
• Flexible hours with hybrid working between our great offices and from home.
• A friendly, diverse group of colleagues from all different nationalities, genders and orientations

Reach out to us and become part of our story We are looking forward to reading about your motivation and seeing your CV.

About Us
At ROMEO, we're on a mission to connect 3 million queer people worldwide for Dates, Friends, and Love. As a Senior Backend Developer, you'll play a crucial role in modernizing and maintaining our platform's backend systems. Join our diverse team of 54 professionals based in Berlin at Erasys, where we offer a hybrid work environment with flexible options for both home and office work.