Workplace Architect

Are you ready to join our digital revolution journey? 
At Aleph, we’re not just part of the digital advertising landscape—we’re shaping its future. Representing the world’s leading platforms, including TikTok, Amazon, Google, and nearly 55 others, we operate in 130+ markets across new and existing geographies.
Our mission is to empower advertisers and brands to unlock the full potential of these platforms' advertising capabilities. By fostering long-lasting partnerships, we create limitless opportunities for people and businesses to advertise effectively at both local and global levels.
With a presence spanning continents, Aleph offers you the chance to be part of a fast-growing, innovative team where your work makes a direct impact. If you’re ambitious, forward-thinking, and eager to thrive in a dynamic, global environment, Aleph is the perfect place to build your career.

We are looking for a highly skilled and experienced Senior Systems Administrator to join our dynamic team. The ideal candidate brings deep expertise in Linux systems management, networking, web server administration, monitoring, hardware, databases, cybersecurity, and public cloud platforms — specifically AWS and GCP.

This role requires the ability to work independently, collaborate effectively with internal teams and external partners, and thrive in a fast-paced environment.

What you'll do:

Linux & Virtualisation

Install, administer, and maintain Linux operating systems, including Debian and RHEL distributions.

Design, deploy, and maintain virtualisation environments (libvirt) and containerisation tools (LXC, Docker).

Manage Kubernetes (K8s) clusters — deployments, services, scaling, and troubleshooting in production environments.

L3 Networking

Strong knowledge of networking protocols and services: IP, routing (static, OSPF, BGP), DNS, VPN, HA technologies (bridging, keepalive), firewalls, and Cisco Meraki.

Design and maintain secure, high-availability network infrastructure across distributed environments.

Cloud Infrastructure — AWS & GCP

AWS: EC2, VPC, IAM, S3, RDS, EKS, CloudWatch, CloudTrail, Lambda. Experience with cost optimisation (Cost Explorer, Savings Plans) and security groups/policies.

GCP: Compute Engine, GKE, Cloud Storage, Cloud SQL, VPC, IAM, and Cloud Monitoring. Familiarity with Terraform or similar IaC tools for cloud resource management.

Experience managing multi-tenant cloud environments and migration projects (on-prem → cloud).

Understanding of cloud security principles: encryption, secrets management (HashiCorp Vault, AWS Secrets Manager), Zero Trust networking.

Web Servers & Databases

Configure and manage web servers: Nginx, Apache, PHP.

Database administration with MySQL/MariaDB, including replication technologies (bin-log, Galera).

Experience with Redis, Memcache, Supervisord, and Logstash.

Monitoring & Security

Infrastructure monitoring using Nagios, Zabbix, Grafana, Prometheus, and Netdata.

Apply cybersecurity principles including vulnerability management, SIEM, and XDR.

Certificate lifecycle management (PKI, Let's Encrypt) and vulnerability scanning.

Automation & IaC

Infrastructure as Code using Terraform, Ansible, or Puppet.

Scripting in Bash, Python, or similar languages to automate repetitive operational tasks.

Experience with CI/CD pipelines (GitLab CI, GitHub Actions, or equivalent) is a plus.

General Responsibilities

Infrastructure.

Provide occasional L2 technical support assistance.

Create and maintain technical documentation, knowledge base articles, and runbooks — Atlassian Stack (Confluence, Jira).

Manage IT assets including hardware, software licences, and peripheral devices.

Collaborate closely with external support teams and the R&D department on technology projects.

What we are looking for:

• Degree in Computer Science, Information Technology, or a related field — or equivalent practical experience.

  
  

• 5+ years of experience in Linux systems administration and IT infrastructure management.

  
  

• Proven hands-on experience with AWS and/or GCP in a production environment.

  
  

• Strong understanding of the technologies listed above.

  
  

• Excellent problem-solving skills with the ability to troubleshoot complex issues independently.

  
  

• Strong communication and interpersonal skills; ability to collaborate effectively across teams and with external stakeholders.

  
  

• Demonstrated ability to work independently and manage multiple priorities simultaneously.

  
  

• Relevant certifications are a strong plus: RHCE, CCNA, AWS Solutions Architect, GCP Associate Cloud Engineer, or equivalent.

  
  

• Fluent written and spoken English.