Sr. Platform & Infrastructure Engineer

We require people to be on-site, 4 days/week at our Denver office and are unable to offer relocation support.LG Ad SolutionsLG Ad Solutions is a global leader in connected TV (CTV) and cross-screen advertising. We pride ourselves on delivering state-of-the-art advertising solutions that integrate seamlessly with today's ever-evolving digital media landscape.The OpportunityWe're moving to a hybrid infrastructure model. Our team has deep AWS expertise; what we're building now is the on-premises layer — bare metal compute, network fabric, storage, and the tooling to manage it all as code alongside our cloud footprint. This role is for someone who has lived in data centers and cloud environments equally, understands the tradeoffs deeply, and can help us architect something that's genuinely best-of-both.You'll be a key technical voice in decisions about what lives on-prem versus cloud, how we bridge the two, and how we keep developers moving fast regardless of where their workloads run.A note on what we're not looking for: If your entire career has been cloud-native, this probably isn't the right fit. We're building something that bridges two worlds, and we need someone who genuinely enjoys the physical infrastructure side — not just tolerates it.ResponsibilitiesHybrid Infrastructure EngineeringDesign, deploy, and maintain on-premises compute, storage, and networking infrastructure alongside our AWS environmentOwn bare metal provisioning and lifecycle management — from rack and stack through OS deployment, patching, and decommissionBuild and manage the network fabric connecting on-prem and cloud: VLANs, VPNs, BGP routing, firewall policyArchitect and maintain storage systems (SAN/NAS) and evaluate tradeoffs between on-prem storage and cloud-native alternativesPlatform & AutomationExtend our Infrastructure as Code practices to cover on-prem resources using Terraform and Pulumi alongside AWS toolingBuild and maintain CI/CD pipelines that work seamlessly across hybrid environmentsManage container orchestration (Kubernetes) across both bare metal and EKS — including cluster provisioning, networking, and storage across environmentsAutomate provisioning, configuration management, and drift detection at scaleSecurity & ComplianceImplement consistent security controls across on-prem and cloud: network segmentation, identity management, and secrets managementContribute to audit and SOC 2 compliance effortsMaintain compliance with enterprise security standards across the full stackMonitoring & Incident ResponseBuild unified observability across hybrid environments — metrics, logs, and traces from on-prem and cloud in a single pane of glassParticipate in on-call rotation and lead incident response for infrastructure-layer issues regardless of where they originateDefine and maintain SLOs for platform reliability across the hybrid footprintCollaboration & DocumentationPartner with engineering teams to help them understand the tradeoffs between on-prem and cloud for their workloadsMaintain thorough runbooks, architecture diagrams, and operational documentationContribute to infrastructure cost optimization across both environmentsRequirements7+ years of experience in Platform Engineering, DevOps, or Infrastructure rolesDemonstrated hands-on experience managing physical server infrastructure — bare metal provisioning, data center operations, and hardware lifecycleStrong Linux systems administration: networking stack, storage management, kernel configuration, performance tuningSolid networking fundamentals: TCP/IP, DNS, VLANs, firewalls, load balancersProficiency with Infrastructure as Code across both on-prem and cloud using Terraform and PulumiExperience running Kubernetes on bare metal as well as managed cloud (EKS)Hands-on AWS experience: EC2, EKS, VPC networking, IAM, RDS, and related servicesFamiliarity with hybrid connectivity patterns: Direct Connect, Site-to-Site VPN, private link architecturesExperience with unified observability tooling: Prometheus/Grafana, ELK, or similar across mixed environmentsStrong scripting in Python or Go for automation and toolingLG Ad Solutions provides equal work opportunities to all team members and applicants, and it prohibits discrimination and harassment of any type on the basis of race, color, ethnicity, caste, religion, age, sex (including pregnancy), national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by our policies or federal, state, or local laws.We want to ensure that our hiring process is accessible. If you need reasonable accommodation for any part of the application process because of a medical condition or disability, please send an email to careers@lgads.tv to let us know the nature of your request.