{"id":897021,"url":"https://alion.io/job/valarian-senior-infrastructure-engineer","title":"Senior Infrastructure Engineer","company":{"id":690001,"name":"Valarian","domain":"valarian.com","url":"https://alion.io/company/valarian","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":79,"open_postings":6,"ghost_share":0,"stale_share":0.833,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-06T05:45:30Z"}},"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":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":78000,"max_usd":158000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":40},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ArgoCD","optional":false},{"name":"Cilium","optional":false},{"name":"DNS","optional":false},{"name":"eBPF","optional":false},{"name":"GCP","optional":false},{"name":"GitOps","optional":false},{"name":"Helm","optional":false},{"name":"Istio","optional":false},{"name":"Kubernetes","optional":false},{"name":"Kustomize","optional":false},{"name":"Least Privilege","optional":false},{"name":"Linux","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Service Mesh","optional":false},{"name":"TCP/IP","optional":false},{"name":"Terraform","optional":false},{"name":"Zero Trust","optional":false},{"name":"Dynatrace","optional":true},{"name":"Envoy","optional":true},{"name":"External Secrets","optional":true},{"name":"Grafana","optional":true},{"name":"Jaeger","optional":true},{"name":"Loki","optional":true},{"name":"OpenShift","optional":true},{"name":"OpenTelemetry","optional":true},{"name":"Prometheus","optional":true},{"name":"Sealed Secrets","optional":true},{"name":"SOPS","optional":true},{"name":"VMWare","optional":true}],"status":"live","first_seen_at":"2026-05-29T14:46:24Z","employer_posted_date":"2026-05-29","last_verified_at":"2026-10-06T23:23:14Z","board_verified":true,"closed_at":null,"days_open":130,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":129},"description":"Valarian Technologies is a dual-use technology company building critical tools to safeguard the future in an era of evolving global security challenges. We're rethinking security beyond traditional military domains, addressing asymmetric threats that impact our technological advantage, economic strength, and democratic institutions.\nWe build Acra - the platform foundation for everything we do as a dual-use technology company. The platform’s name, rooted in the Greek word for citadel (or, fortress), reflects the design and purpose of our infrastructure-agnostic secure enclaves: protecting critical data. Some of the government and commercial workflows include: increased operational resiliency for mission-critical systems and functions; enabling organisations to more quickly and widely adopt emerging technologies while ensuring the integrity of their intellectual property; information flow during disaster response scenarios, and zero-trust / least-privilege environments for M&A, attorney-client privileged communications, etc. And we’ve only scratched the surface.\nAt our core, we're driven by a shared mission and a belief in making a tangible impact on our world. Whether you join our London HQ or the wider global organisation, you’ll be a part of collaborative, high-performing teams, creating cutting-edge software, platforms, and infrastructure.\nThe Role\nWe are looking for a Senior Infrastructure Engineer to own and evolve the foundational infrastructure layer behind ACRA.\nThis is a deep infrastructure role. You will work across Kubernetes, Linux, networking, storage, service-to-service communication, observability, security boundaries, and production operations. You will be responsible for the systems that everything else depends on: clusters, networks, storage layers, ingress and egress paths, runtime infrastructure, deployment foundations, and operational reliability.\nInfrastructure is part of the product at Valarian. ACRA only works if the underlying infrastructure is secure, observable, debuggable, resilient, and able to run across cloud, on-premise, bare-metal, sovereign, air-gapped, and customer-managed environments.\nWe are looking for someone with strong judgement and real production experience. This role values depth, operational correctness, and careful decision-making. You should be comfortable going deep into complex operational problems, understanding failure modes, debugging under pressure, and improving the reliability of the whole platform.\nYou should be comfortable operating close to the metal: debugging Kubernetes, understanding networking behaviour, reasoning about distributed storage, improving observability, and helping define the infrastructure patterns that ACRA will rely on as it scales.\nThis is not a generic DevOps support role, cloud administration role, or internal IT role. You will be a critical engineer in the team responsible for the infrastructure foundations of a high-trust platform.\nWhat you’ll do:\nDesign, build, operate, and improve Kubernetes-based infrastructure for ACRA.\n\nOwn core infrastructure plumbing across networking, storage, workload scheduling, service communication, ingress, egress, DNS, certificates, and cluster-level security.\n\nOperate and debug production Kubernetes environments across GCP, on-premise, bare-metal, sovereign cloud, air-gapped, and customer-managed deployments.\n\nWork on multi-cluster Kubernetes environments, cluster networking, network policy, service mesh, and secure service-to-service communication.\n\nOperate and evolve distributed storage systems, including storage classes, CSI drivers, capacity planning, replication, recovery, and failure handling.\n\nWork with infrastructure technologies such as Kubernetes, Linux, Cilium, eBPF, Istio, Rook Ceph, Terraform, Argo CD, GitOps, Helm, and related CNCF tooling.\n\nBuild infrastructure automation that improves repeatability, reliability, and operational safety.\n\nImprove observability across infrastructure layers, including metrics, logs, traces, alerting, dashboards, and operational runbooks.\n\nInvestigate and resolve complex production issues across networking, storage, Kubernetes, Linux, and application infrastructure.\n\nContribute to incident response, root-cause analysis, capacity planning, disaster recovery, and production readiness.\n\nDefine infrastructure standards, operational boundaries, security controls, and deployment patterns across the platform.\n\nWork closely with engineering teams to make services easier to deploy, operate, monitor, and debug.\n\nContribute to the long-term technical direction of the DevOps department and the infrastructure foundations of ACRA.\n\nWhat we are looking for:\nStrong experience in infrastructure engineering, platform engineering, DevOps, SRE, or production systems engineering.\n\nDeep hands-on experience operating Kubernetes in production.\n\nStrong understanding of Linux systems, containers, networking, storage, and distributed infrastructure.\n\nStrong networking fundamentals, including TCP/IP, DNS, TLS, routing, load balancing, ingress, egress, network policy, and service discovery.\n\nExperience debugging difficult infrastructure issues across clusters, nodes, pods, networks, storage, and workloads.\n\nExperience with Kubernetes networking, CNI, service mesh, network policy, or secure service-to-service communication.\n\nExperience or strong working knowledge in at least one deep infrastructure area such as Kubernetes networking, distributed storage, Linux systems, bare-metal infrastructure, multi-cluster operations, or production incident response.\n\nExperience with infrastructure as code and GitOps workflows, especially Terraform, Argo CD, Helm, Kustomize, or similar tooling.\n\nExperience building reliable infrastructure for production environments where uptime, security, and operational clarity matter.\n\nComfortable working across cloud, on-premise, bare-metal, restricted, or customer-managed environments.\n\nStrong operational judgement, especially around reliability, resilience, failure domains, and production risk.\n\nStrong ownership mindset. You can take responsibility for critical systems and improve them over time.\n\nClear communication skills. You can explain complex infrastructure problems to engineering and leadership without adding noise.\n\nComfortable working in a startup environment with ambiguity, changing priorities, and broad technical responsibility.\n\nNice to have:\nExperience with distributed storage systems, especially Rook Ceph or Ceph.\n\nExperience with Cilium, eBPF, cluster mesh, Istio, Envoy, or similar networking and service mesh technologies.\n\nExperience with multi-cluster Kubernetes environments.\n\nExperience operating Kubernetes or OpenShift outside simple managed-cloud environments, including bare-metal, VMware, sovereign, air-gapped, regulated, or customer-managed deployments.\n\nExperience operating infrastructure in secure, regulated, sovereign, air-gapped, defence, government, fintech, healthcare, critical infrastructure, or customer-managed environments.\n\nExperience with zero-trust architecture, workload isolation, identity-aware networking, policy enforcement, or runtime security.\n\nExperience with secrets management tools such as Vault, OpenBao, SOPS, Sealed Secrets, External Secrets, or cloud-native secret managers.\n\nExperience with observability stacks such as Prometheus, Grafana, Loki, OpenTelemetry, Jaeger, ELK, Dynatrace, or similar tooling.\n\nExperience with supply-chain security, including image signing, vulnerability scanning, SBOMs, artefact verification, admission control, or policy-as-code.\n\nExperience designing infrastructure where auditability, traceability, recoverability, and operational evidence are first-class requirements.\n\nBenefits:\nOur benefits are designed to ensure our employees feel taken care of and are proud to be a part of the Valarian team. We are committed to consistently enhancing our benefit package, taking into account the overall well-being and needs of our teammates. Here are the key benefits accessible to all employees at Valarian Technologies:\nEquity - because you have the right to own what you’re building\n\nA competitive salary - because we value your unique skills\n\nEmployer pension contributions - because you deserve a secure future\n\nPrivate health insurance - because your health is important to us \nHybrid work setup - because everyone has different needs\n\nRewarding company retreats and meetups that respect your work/life balance - because we love getting to know each other!\n\nLife at Valarian\nOur culture is built on inclusivity, compassion and flexibility - we want everyone to be empowered to achieve their goals at Valarian.\nThe work we do is vital, but so are the connections that make it happen. We thrive on the shared energy, spontaneous conversations, and mutual trust built when we spend time together. We operate on a hybrid model, gathering in our London office 3 days a week to support one another and collaborate.\nWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. 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