Senior Network & Site Reliability Engineer

Alembic

$130K — $180K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 8+ years in network or infrastructure engineering, with 5+ years in datacenter operations and/or systems and network administration.
  • Strong background in network security, architecture, design, and operations.
  • Hands-on experience with network devices (firewalls, switches, load balancers) and large-scale architectures and protocols.
  • Experience designing and operating modern datacenter network fabrics (spine-leaf, EVPN/VXLAN, ECMP).
  • Proficient in network automation and Infrastructure as Code (IaC) tooling (Ansible, Terraform, etc.).
  • Familiarity with Kubernetes networking and strong operational experience with Linux-based infrastructures.
  • Solid scripting skills (Python, Bash) for debugging and automation.

Responsibilities

  • Architect and operate scalable, secure network architecture for high-security requirements.
  • Own network device configuration management end to end for reliability.
  • Enhance system and network reliability through automation and proactive planning.
  • Implement and manage complex network protocols and external connectivity.
  • Establish monitoring, alerting, and incident response for performance optimization.
  • Ensure security, compliance, and operational readiness in network and cloud infrastructure.
  • Collaborate across teams to foster a culture of performance and reliability.

Benefits

  • Opportunity to work with one of the world’s fastest private supercomputers.
  • Influence architecture decisions in a mission-critical environment.
  • Challenging technical problems focused on real-world scalability and reliability.
  • Autonomy in ownership of infrastructure rather than traditional maintenance roles.
Full Job Description
About the Role

We're building infrastructure that has to perform under real-world scale, reliability, and security demands - and we're looking for an engineer who wants to own the foundation it runs on. This isn't a traditional "keep the lights on" role.

You'll design and operate the global network and reliability layer behind one of the world's fastest private supercomputers - the fabric powering distributed compute, ML workloads, real-time analytics, and mission-critical enterprise systems. You'll work across networking, systems, automation, observability, and reliability engineering to scale a platform where performance genuinely matters, with real influence over architecture decisions.

It's a strong fit if you like solving deep infrastructure problems, building resilient systems, automating everything repetitive, and owning architecture rather than just maintaining it.

What You'll Do
  • Architect and operate scalable, secure network architecture for high-security requirements and large-scale machine learning workloads.
  • Own network device configuration management end to end, ensuring consistency and reliability across the fleet.
  • Improve system and network reliability and performance through automation, observability, and proactive capacity planning.
  • Implement and manage complex network protocols and connectivity, including BGP, VPNs, and WAN circuits and external peering.
  • Build and maintain comprehensive monitoring, alerting, and incident response - SLOs, runbooks, and on-call rotations - and drive post-incident analysis and continuous improvement.
  • Ensure security, compliance, and operational readiness across our network and cloud infrastructure.
  • Partner across engineering and data science to drive a culture of performance and reliability.
What Will Help You Succeed
  • 8+ years in network or infrastructure engineering, including 5+ years in datacenter operations and/or systems and network administration.
  • A strong background in network security, architecture, design, and operations.
  • Extensive hands-on experience with network devices (firewalls, switches, load balancers) and large-scale architectures and protocols - BGP, QoS, MPLS, and IPsec VPNs.
  • Experience designing and operating modern datacenter network fabrics (spine-leaf, EVPN/VXLAN, ECMP).
  • Network automation and IaC tooling (Ansible, Terraform, Nornir, or similar), plus IPAM/DCIM platforms (NetBox, Infoblox, or similar).
  • WAN engineering - carrier circuit provisioning and external network peering.
  • Familiarity with Kubernetes networking (CNI plugins, ingress, service networking, network policy) and strong operational experience with Linux-based production infrastructure.
  • Experience with monitoring and observability stacks (Prometheus, Grafana, Datadog, ELK, OpenTelemetry).
  • Solid scripting (Python, Bash) to debug complex network and system issues and automate solutions, plus excellent cross-functional communication.
Also Helpful
  • NVIDIA networking technologies - Cumulus Linux, InfiniBand, Spectrum-X, and BlueField DPUs (this is the fabric behind our SuperPOD).
  • Familiarity with data-intensive platforms (Spark, Airflow, Kafka) and storage network protocols (NFS, LustreFS, iSCSI).
  • Security practices for applications and infrastructure, and experience in high-compliance or SOC 2 environments.
The Role Is Right for You If
  • You want to own mission-critical network and infrastructure end to end - from architecture to incident management - not just keep it running.
  • You'd rather build and automate than direct from a distance, and you want meaningful influence over how a high-performance platform scales.


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