{"id":193327,"url":"https://alion.io/job/hackthebox-senior-infrastructure-engineer","title":"Senior Infrastructure Engineer","company":{"id":16242,"name":"Hack The Box","domain":"hackthebox.com","url":"https://alion.io/company/hackthebox","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":93,"open_postings":10,"ghost_share":0,"stale_share":0.1,"repost_share":0,"time_to_fill_p50_days":70,"computed_at":"2026-10-26T05:57:25Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Palaio Faliro, Greece"],"countries":["GR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":26000,"max_usd":73000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":3508},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"Debian","optional":false},{"name":"Go","optional":false},{"name":"Grafana","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Prometheus","optional":false},{"name":"Terraform","optional":false},{"name":"VLAN","optional":false},{"name":"VMWare","optional":false},{"name":"AI Agents","optional":true},{"name":"BGP","optional":true},{"name":"OpenStack","optional":true}],"status":"live","first_seen_at":"2026-08-31T00:00:00Z","employer_posted_date":"2026-08-31","last_verified_at":"2026-10-26T04:33:46Z","board_verified":true,"closed_at":null,"days_open":56,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":56},"description":"Ready to embark on the quest of joining Hack The Box?\nWelcome! Super excited you dropped by\nAt the end of this journey, you'll become a proud member of Hack The Box, with the ultimate mission to raise cyber resilience, so that every organization can stay ahead of tomorrow’s threats.\nThe core mission of the Senior Infrastructure engineer:\nAs an Infrastructure Engineer, you will 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 work at the intersection of bare-metal infrastructure, virtualization and cloud-native tooling - and play a key role in one of HTB's most impactful infrastructure initiatives: the migration away from VMware toward an open-source virtualization and cloud platform.\nCore mission: 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\nLocation & Work Mode:\nEurope/Greece\nChoose between fully remote work across Europe or relocating to our Athens Tech Hub with relocation support.\nFully Remote / Hybrid (2 days in the office, 3 days remote, plus one month of work from anywhere) - If only in Greece: When hiring in Greece, we’re open to candidates from all locations. Those based within 55 km of our Athens office will follow a hybrid work model. For candidates located beyond that radius, a fully remote arrangement is available.\nRelocation\nWe offer a 10% relocation bonus on the annual salary to support your move.\nIn addition, you would benefit from a 50% tax reduction on your income as part of the relocation.\nWe'll support you with accommodation during the first few weeks\nTools & weapons you’ll be using:\nVMware vSphere, VMware NSX, Kubernetes, Ceph (NVMEoF / RBD),Linux (Debian), Ansible, Terraform, Prometheus / Grafana, Golang\nThe adventures that await you after becoming Senior Infrastructure Engineer at Hack The Box:\nOperate and maintain VMware vSphere clusters and NSX-based virtual networking across multiple data center sites\nAdminister and tune Ceph storage clusters, including NVMEoF-backed pools and RBD volumes\nDeploy, upgrade and troubleshoot Kubernetes clusters running on bare-metal and virtualized infrastructure\nContribute to the evaluation and proof-of-concept work for migrating from VMware to an open-source platform.\nDevelop and maintain infrastructure-as-code (Ansible playbooks, Terraform modules) for repeatable, auditable deployments\nMonitor infrastructure health and performance using Prometheus, Grafana and alerting pipelines; respond to incidents\nCollaborate with the network engineering team on data center connectivity, VLAN/VRF provisioning and storage-network performance\nSupport hardware lifecycle operations: racking, provisioning, firmware updates and decommissioning across regions\nWrite and maintain technical documentation, runbooks and post-incident reviews\nParticipate in on-call rotation for infrastructure-related incidents\nSkills, knowledge, and experience points required to unlock the role of Senior Infrastructure Engineer at Hack The Box:\n3-5 years of professional experience in infrastructure, systems or platform engineering\nHands-on experience with VMware vSphere administration (cluster management, resource pools, vMotion, HA/DRS)\nWorking knowledge of VMware NSX or similar software-defined networking\nExperience administering Ceph storage (or comparable distributed storage systems)\nSolid Kubernetes operations experience (deployment, upgrades, troubleshooting, cluster lifecycle)\nStrong Linux systems administration skills (Debian)\nFamiliarity with infrastructure-as-code tools (Ansible, Terraform)\nComfortable working with monitoring and observability stacks (Prometheus, Grafana)\nGood written communication skills for documentation and remote-first collaboration\nBeing cyber security-minded is a strong plus\nBonus Points:\nHands-on experience with OpenStack, CloudStack or similar\nExperience with Ceph NVMEoF transport or RDMA-based storage networking\nUnderstanding of Golang for writing internal automation or tooling\nFamiliarity with BGP, EVPN-VXLAN or data center networking concepts\nExperience with bare-metal provisioning tools (Tinkerbell)\nPrevious work in a multi-region data center environment\nWhat your Hack The Box adventure will have in store:\nYou'll have the exhilarating opportunity to contribute to a product that is highly appreciated by users and the cybersecurity community at large.\n You'll experience a highly supportive and caring environment, fostering growth, flexibility, and autonomy.\n You'll embark on an exciting journey of continuous learning and problem-solving, levelling up as our organisation grows.\n Most importantly, you'll have a blast at HTB because fun is an essential ingredient in our recipe for success! Just wait until you see our global meet-ups! \nThe gems you’ll be enjoying as Senior Infrastructure Engineer:\n25 annual leave days \nPaid parental leave\nHome Office Allowance\nDedicated budget for training and professional development, participation in conferences\nState-of-the-art equipment \nFull access to the Hack The Box lab offerings; so you can learn how to hack \nFlexibility in working hours\nOur benefits package is designed to provide strong support to our team, but it may vary depending on location and type of employment (e.g., UK, US, Greece, Australia, or engagement through an Employer of Record or contract).\nThe Quest of Becoming Hack The Box’s Senior Infrastructure Engineer:\nLevel 1: To complete level one’s objective, submit your application. \nLevel 2: Meet the Talent Acquisition team. Level’s objective: highlight your past achievements, ambitions, and values.\nLevel 3: Meet the hiring team. Level’s objective: have a technical conversation that aligns with day-to-day job-related tasks and responsibilities. \nLevel 4: Level's objective: connect with the hiring team and share with them your achievements. \nLevel 5: Congratulations! Not many reach this level . Level’s objective: have a constructive, final conversation with senior leadership to explore the role and your future at HTB. \nLevel 6: You've officially received an offer from HTB! To complete the last level and the Quest, all you need to do is accept the offer. \nQuest complete. Congratulations, you’re officially one of us Your next quest: complete the onboarding.\nHack Your Career, Today. Join us in this epic adventure of cybersecurity at Hack The Box!\nAt Hack The Box, we are on a quest to find the most exceptional and enthusiastic talent to join our team. Whether or not you consider yourself a gamer, we value what makes you unique and want to know more about you. This job post provides just a glimpse of the incredible gamified experience our business and consumer customers enjoy through our platforms. So, if you're ready to embark on a journey of growth and adventure, we can't wait to meet you! \nABOUT HTB:\nHack The Box is the leading cyber readiness platform for the agentic era, battle-testing and upskilling both humans and AI agents to enhance organizational cyber resilience. Trusted by the Fortune 500, government agencies, and MSSPs, the platform delivers threat-informed learning paths consisting of real-world scenarios in gamified labs and live-fire simulations that build and validate offensive and defensive cyber capabilities. With a loyal community of more than 4 million members and 800+ enterprise customers, Hack The Box empowers teams and intelligent systems alike to strengthen cyber defenses and reduce breach risk effectively.\nRapidly growing its international footprint and reach, Hack The Box is headquartered in the UK, with additional offices in the US, Australia, and Greece.\nNews & Resources:\nWe’re incredibly proud to share that our headquarters in the UK, along with our entities in Greece and the US, have been certified as a Great Place to Work for 4 consecutive years (2023 - 2026). \nIn addition, our Greek entity has been recognized among the Best Workplaces in Greece (4th, 2nd, 3rd, 1st) and Europe (7th, 10th, 73rd) during this period - a testament to our strong culture and commitment to creating an exceptional employee experience!\nTake a sneak peek at how it is to be part of HTB. Get more insights about our HTB culture and employee experience by visiting the “about us ” section of our site, our career site, and Glassdoor.\nAt Hack The Box, we are committed to fostering a diverse, inclusive, and equitable workplace. We believe that diversity enriches our performance, services, and the communities we serve. As such, we ensure that all job applications are considered solely based on merit, skills, and qualifications. We do not discriminate on grounds of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. 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