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Open nowPosted 30 days ago

Senior Systems Engineer

Workable (global search)107,990 open roles

Where
Athens, Greece
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Your applicationOpen nowSenior Systems EngineerWorkable (global search) · Athens, Greece

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The clock on this job

Early applications get read.

7.9% of postings close within 7 days. Measured by our own scanner across the market. Workable (global search) postings stay open a median of 6 days.

Share of postings closed within
  1. 1.6%1 day
  2. 3.6%3 days
  3. 7.9%7 days
  4. 14.9%14 days
  5. 34.0%30 days
This job: posted 30 days ago

Workable (global search) median: 6 days open

The posting

The Team OpenBet is a global leader in betting and gaming entertainment, trusted by over 200 partners to create memorable winning moments for millions of players worldwide. From processing bets during iconic events like the FIFA World Cup and Super Bowl to pioneering next-gen products like BetBuilder, we continuously redefine the player experience with high-quality content, cutting-edge technology, and advanced player protection tools.

For over 25 years, our unbeatable platform has powered the most recognizable betting brands, ensuring peak performance with 100% uptime, unmatched scale, and speed. With 85 licenses, 20 World Lottery Association operators on our customer roster, and a team of 1,200+ experts across 14 countries, we remain at the heart of the industry.

The Goal We are looking for a Senior Systems Engineer to own and evolve our global Windows and Linux, virtualization, server, storage, and backup infrastructure.

This is a senior hands-on technical role with responsibility for architecture, planning, operations, lifecycle management, standards, and continuous improvement across Windows and Linux systems, virtualization platforms, enterprise hardware, storage arrays, backup platforms, and core infrastructure services.

What you will be doing

  • Manage the global Windows server infrastructure, including operations, maintenance, and lifecycle management.
  • Administer Linux servers (RHEL, Rocky Linux, Ubuntu, or Debian) to a working proficiency level, supporting day-to-day operations and routine troubleshooting across the mixed estate.
  • Administer and maintain virtualization platforms, including VMware Cloud Foundation, vCenter, and Hyper-V.
  • Manage enterprise systems hardware, including server, storage, and backup platforms.
  • Contribute to infrastructure planning, operational improvements, and technology refresh initiatives.
  • Act as the senior escalation point for complex infrastructure incidents and technical issues, across both Windows and Linux environments.
  • Administer Windows Server, Server Core, Active Directory, DNS, DHCP, and Group Policy.
  • Develop PowerShell automation for operational tasks, reporting, deployments, and maintenance; apply shell scripting for equivalent tasks on Linux systems.
  • Apply DevOps practices — including CI/CD pipelines and version control — to infrastructure automation and deployment workflows across both platforms.
  • Manage Dell PowerEdge and HPE ProLiant server platforms.
  • Manage enterprise storage platforms, including NetApp and HPE MSA arrays.
  • Administer backup and recovery platforms, preferably Veeam.
  • Perform patching, upgrades, hardening, firmware updates, and capacity planning across both operating environments.
  • Monitor availability, performance, capacity, backup status, and overall system health.
  • Support and manage workloads across on-premises and cloud infrastructure (Azure and/or AWS).
  • Improve infrastructure stability, security, scalability, recoverability, and operational efficiency.
  • Create and maintain technical documentation, operational procedures, and runbooks.
  • Collaborate closely with network, security, application, vendor, and service provider teams.
  • Participate in an on-call / standby support rotation.

The Player

  • 5+ years of experience in Windows systems administration within enterprise or large-scale environments.
  • Strong experience administering Windows infrastructure, virtualization, servers, storage, and backup platforms.
  • Strong knowledge of Windows Server, including Windows Server Core.
  • Strong experience with Active Directory, DNS, DHCP, Group Policy, LDAP, and authentication services.
  • Advanced PowerShell scripting and automation skills.
  • Working proficiency administering Linux servers (RHEL, Rocky Linux, Ubuntu, or Debian), including routine administration and Bash scripting.
  • Familiarity with DevOps practices, CI/CD pipelines, and version control systems.
  • Strong experience administering VMware Cloud Foundation, vCenter, and/or Hyper-V environments.
  • Strong experience with enterprise server hardware, particularly Dell PowerEdge and HPE ProLiant.
  • Strong experience with enterprise storage platforms, particularly NetApp and HPE MSA.
  • Strong experience with enterprise backup and recovery platforms, preferably Veeam.
  • Good understanding of TCP/IP, VLANs, routing, subnetting, VPNs, and firewalls.
  • Solid knowledge of DNS, HTTP/HTTPS, LDAP, SMTP, SNMP, WMI, and TLS/SSL.
  • Experience with monitoring platforms such as Nagios, Zabbix, or Grafana.
  • Experience with Tanium or similar endpoint management and deployment tools.
  • Experience with Microsoft Azure and/or AWS.
  • Understanding of ITIL practices and change management processes.
  • Strong troubleshooting, analytical, documentation, and communication skills.

Nice to Have

  • Deeper Linux experience beyond working proficiency (e.g., scripted automation frameworks, Linux-based identity/directory services such as LDAP/FreeIPA).
  • Microsoft, VMware, Veeam, ITIL, Azure, AWS, or Linux-related certifications.
  • Experience working in global, multi-site, or data center environments.
  • Experience contributing to infrastructure lifecycle planning, technology refresh initiatives, or operational standards.

What's the Score? What we can offer YOU:

  • We have a collaborative hybrid office environment with our team members at least 3 days per week.
  • Attractive benefits, an open and supportive environment as well as a modern and exciting workplace
  • The opportunity to interact with global teams on a regular basis as you and our business continues to develop & grow
  • Tangible and genuine development - at OpenBet, you can take your career where you want it to go!
  • And if that's not enough; enjoy flexible working whilst we provide you with the guidance and development skills you need to progress and enhance your career

At OpenBet, we celebrate diversity and believe in creating an inclusive environment where every voice is valued and respected. We're committed to building a team that reflects the rich tapestry of humanity, embracing individuals from all walks of life, backgrounds, and identities. Join us in shaping the future of iGaming, where diversity isn't just celebrated—it's celebrated.

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