Top Infrastructure Engineer Jobs in Denver & Boulder, CO

The Lead Infrastructure Engineer will define and build infrastructure at Atticus, managing platforms, security, reliability, and empowering engineering teams.

Install, terminate, test, troubleshoot, and maintain secure and non-secure voice, video, data, and RF cabling. Develop wiring diagrams, maintain labeling and datacenter cabling standards, perform inside-plant and OSP tasks, and work onsite in military-secured environments. May supervise staff and work non-standard schedules to support mission needs.

Design, build, and run secure production infrastructure across cloud-native and air-gapped deployments. Own end-to-end platform outcomes, harden the artifact pipeline for signed releases, embed with teams to advise on security and deployment best practices, and partner with GRC on STIGs, CVE remediation, and audit readiness for classified environments.

Build, operate, and secure cloud-native and edge infrastructure including Kubernetes, artifact pipelines, application streaming, and air-gapped appliances. Partner with product, GRC, and mission owners to design, deploy, and harden systems, remediate vulnerabilities, support audits (IL5/IL6/JWICS), and ensure trusted artifact delivery across environments.

Design, build, and operate secure cloud-native and edge infrastructure for classified and commercial environments. Own end-to-end platform outcomes, harden artifact pipelines for signed builds across cloud and air-gapped deployments, embed with product teams to advise on secure deployments, and support compliance/audit activities (STIGs, CVE remediation) to enable operation in IL5/IL6/JWICS environments.

Design, build, and maintain scalable AWS and Azure infrastructure using Infrastructure-as-Code. Develop automation, deployment pipelines, and production release processes. Contribute code to cloud services, manage networking and IAM, ensure availability and security, and respond to incidents while collaborating on observability and security practices.

The Senior Infrastructure Engineer will improve system reliability and efficiency, develop standards and tooling, and collaborate with engineering teams to optimize workflows and cloud infrastructure.

The Senior IT Infrastructure Engineer will enhance automation and integration efforts while managing cloud services, CI/CD pipelines, and Kubernetes operations.

The Senior Infrastructure Engineer will design, build, and operate crucial cloud infrastructure and developer tools, focusing on observability, reliability, and performance in a high-velocity software environment.

Design, build, and operate core developer-infrastructure services (CI/build, deployment orchestration, test infra) at scale. Own services end-to-end including SLOs, observability, and on-call; drive measurable improvements in build/deploy/test metrics; lead cross-team technical projects and mentor engineers to improve developer productivity.

The Staff Software Engineer will architect and develop high-performance cloud services, resolve infrastructure bottlenecks, ensure engineering best practices, and mentor junior members.

In this role, you'll architect and manage distributed database systems, oversee complex migrations, optimize performance, and mentor engineers, driving operational excellence.

Lead technical vision for AI and platform infrastructure across the company. Solve ambiguous, high-stakes problems end-to-end, set architecture and paved-road standards, guide AI provider selection, ensure compliance for government environments, mentor engineers, and drive adoption of best practices in DevOps, CI/CD, developer experience, and compute infrastructure.

Design and automate global, multi-region Kubernetes platforms using Infrastructure as Code. Build observability (OpenTelemetry, metrics), disaster recovery tooling, and package infrastructure components. Integrate shared infrastructure, support developer environments, and hand off stable platforms to SRE teams.

Run and improve Buffer's production platform: keep EKS, ArgoCD, and AWS reliable; implement progressive delivery (Argo Rollouts); build developer-facing tools and per-PR environments; reduce toil with AI automation; manage observability and cloud cost; drive lifecycle upgrades and security; partner with engineering teams and participate in on-call rotations.

Lead design, implementation, and security of AWS cloud infrastructure and CI/CD automation. Drive cost optimization, observability, and IaC standards (Terraform/CDK). Mentor engineers, participate in on-call rotations, and collaborate with product and science teams to build scalable, reliable cloud-native systems.

As a DevSecOps Engineer, you will integrate development and operations with a security focus, implementing CI/CD pipelines, security measures, and monitoring systems.

The Staff Infrastructure Engineer will design and implement a scalable virtualization platform for high-performance AI workloads, manage VM lifecycles, optimize virtualization for performance, troubleshoot systems, and contribute to long-term architecture.

The role involves benchmarking infrastructure performance, designing tests, debugging customer trials, and maintaining benchmarking infrastructure while ensuring clear documentation and communication.

Engineer, deploy, and maintain Linux-based infrastructure supporting HPC, research computing, and on-prem cloud. Manage servers, containers, security patching, automation, and troubleshooting; collaborate with researchers to translate needs into scalable, secure solutions and evaluate new technologies to improve performance and reliability.

As an Infrastructure Engineer at Railway, you will develop system-level software, focusing on distributed systems and efficiency, building scalable services using Golang or Rust, while ensuring high performance and resilience.

Lead architecture, integration, and lifecycle management of propulsion test infrastructure and controls for solid rocket motor programs. Own design and commissioning of fluid, electrical, controls, instrumentation, and DAQ systems; ensure safety, test readiness, data integrity, and repeatable static-fire campaigns. Provide cross-functional technical leadership, mentor engineers, perform root-cause analysis, and drive long-term facility and infrastructure roadmaps.

Build and maintain multi-cloud infrastructure standards, self-service tooling, and paved-road defaults across AWS and GCP. Partner with compute, security, and networking teams to embed guardrails, drive standardization, lead cross-team initiatives, and resolve systemic operational issues to ensure secure, scalable, and reliable platform infrastructure.

Design, deploy, and operate a secure, highly available distributed containerized fleet of single-tenant AI trading agents across a hybrid Railway and AWS environment. Build zero-touch IaC and CI/CD provisioning, manage Tailscale-based private networks, implement monitoring/alerting and automated incident response, preserve in-flight transaction state, and participate in on-call incident management for production financial systems.

Design, build, and operate secure, scalable cloud infrastructure for a blockchain wallet backend. Lead automation with Terraform and CI/CD, run containerized workloads (Docker, Kubernetes), implement observability (Datadog), tune SQL/NoSQL databases, optimize Node.js services, configure secure enclaves, and align infrastructure with product and security teams.