Welcome to Hack The Box! We're excited you're interested in joining our mission to raise cyber resilience. As a Senior Infrastructure Engineer, you'll build, maintain, and evolve the compute, storage, and container platforms that power Hack The Box across data centers in the US, EU, Singapore, and Australia. You'll play a key role in migrating from VMware to an open-source virtualization and cloud platform.
🏢 About Hack The Box
Hack The Box is a platform dedicated to raising cyber resilience, helping organizations stay ahead of tomorrow’s threats. Our mission is to provide a platform that is highly appreciated by users and the cybersecurity community at large.
🎯 The Role
As an Infrastructure Engineer, you will operate and improve HTB's virtualization and storage stack (VMware vSphere, Ceph, Kubernetes) while helping the team evaluate, plan, and execute a migration to an open-source alternative. You'll work at the intersection of bare-metal infrastructure, virtualization, and cloud-native tooling.
✅ Key Responsibilities
Operate and maintain VMware vSphere clusters and NSX-based virtual networking across multiple data center sites
Administer and tune Ceph storage clusters, including NVMEoF-backed pools and RBD volumes
Deploy, upgrade, and troubleshoot Kubernetes clusters running on bare-metal and virtualized infrastructure
Contribute to the evaluation and proof-of-concept work for migrating from VMware to an open-source platform
Develop and maintain infrastructure-as-code (Ansible playbooks, Terraform modules) for repeatable, auditable deployments
Monitor infrastructure health and performance using Prometheus, Grafana, and alerting pipelines; respond to incidents
Collaborate with the network engineering team on data center connectivity, VLAN/VRF provisioning, and storage-network performance
Support hardware lifecycle operations: racking, provisioning, firmware updates, and decommissioning across regions
Write and maintain technical documentation, runbooks, and post-incident reviews
Participate in on-call rotation for infrastructure-related incidents
📌 Required Qualifications
3–5 years of professional experience in infrastructure, systems, or platform engineering
Strong Linux systems administration skills (Debian)
Familiarity with infrastructure-as-code tools (Ansible, Terraform)
Comfortable working with monitoring and observability stacks (Prometheus, Grafana)
Good written communication skills for documentation and remote-first collaboration
Being cyber security-minded is a strong plus
⭐ Desirable Experience
Hands-on experience with OpenStack, CloudStack, or similar
Experience with Ceph NVMEoF transport or RDMA-based storage networking
Understanding of Golang for writing internal automation or tooling
Familiarity with BGP, EVPN-VXLAN, or data center networking concepts
Experience with bare-metal provisioning tools (Tinkerbell)
Previous work in a multi-region data center environment
🎁 Benefits
25 annual leave days, paid parental leave, home office allowance, dedicated budget for training and professional development, participation in conferences, state-of-the-art equipment, full access to the Hack The Box lab offerings, flexibility in working hours. We offer a 10% relocation bonus on the annual salary to support your move, in addition to a 50% tax reduction on your income as part of the relocation. We'll support you with accommodation during the first few weeks.
🛂 Visa & Eligibility
Relocation support is offered, including a 10% relocation bonus and a 50% tax reduction on income. Accommodation support is provided during the first few weeks.
