Site Reliability Engineer (Network)

Cerebras; San Francisco (CA); On-site; USD 157,000 - 239,000; Full time

Benefits offered by this job

Excellent medical/dental/vision plans

401(k) plan and equity options

Relocation assistance

Catered lunches and snacks

Parental leave

International team exposure

Flexible time off

FSA/HSA options

Job summary

Loft is seeking a Site Reliability Engineer with strong networking to join the Cloud Infrastructure SRE team. You will own cloud networking, VPNs, and site-to-site connectivity across offices and ground stations, while coordinating with IT and Test-Infrastructure teams.

You’ll define SLOs, instrument systems, and automate to reduce toil, contributing to platform reliability and incident response. Expect a role that blends networking with SRE best practices in a fast-growing space program company.

Qualifications

• 4–5 years in network engineering with hands-on routing, VPN/site-to-site, DNS and firewalling.
• Hands-on Software-Defined Networking; programmatic network management (IaC).
• Strong public-cloud networking experience, ideally in GCP.
• Comfort with Kubernetes (k8s, Docker) and some coding ability.
• Infrastructure-as-Code and GitOps workflows (Terraform or similar).
• SRE mindset with focus on SLOs, observability, and reducing toil.

Responsibilities

• Design and implement Loft’s network architecture across offices, ground stations, and test equipment.
• Tighten network security posture with segmentation and access controls.
• Manage the network as code, including IaC provisioning and CI/CD pipelines.
• Define SLOs for connectivity and observability; own metrics, logs, and tracing.
• Investigate reliability issues with root-cause analysis and durable fixes.
• Contribute to broader reliability and incident-response efforts within SatDevOps culture.

Skills

Network engineering

SDN / Networking as code

Public-cloud networking

Kubernetes / containers

IaC / Terraform

SRE mindset

Education

CS degree or equivalent

Tools

Terraform

ArgoCD

FluxCD

Job description

As a Site Reliability Engineer with strong networking skills in our Cloud Infrastructure (SRE) team, you help the team own the networks that keep Loft running: cloud networking, VPN and site-to-site connectivity, segmentation, and routing across our offices, test equipment, and ground stations. You keep them reliable, observable, and secure as we scale. You coordinate with IT on the network components that interface with the physical infrastructure used by employees. You coordinate with the Test-Infrastructure team to ensure our test equipment is securely accessible.

You’ll work the way an SRE team works: defining reliability in measurable terms (SLOs for connectivity and ground-station availability), instrumenting the systems that prove it, managing the network as code, and automating away toil so on-call load doesn’t grow with the fleet.

Beyond the network, you’ll help the SRE team across its broader scope by participating in all the daily work just like a regular SRE: platform reliability and expansion, incident response, planning and user support.

About this role:

• Participate in the design and implement Loft’s network architecture; cloud networking, VPN/site-to-site, segmentation, and routing across offices, ground stations, and test equipment
• Tighten the network security posture: segmentation, access, and connectivity hardening
• Manage the network as code: IaC provisioning, CI/CD, and GitOps
• Define SLOs for connectivity and ground-station availability, and own the observability (metrics, logs, tracing) that measures them; Grafana-centric stacks a plus
• Investigate and resolve reliability issues with root-cause analysis and durable fixes; reduce operational toil through automation
• Contribute to the SRE team’s broader reliability and incident-response work, fostering the SatDevOps culture that power Loft’s DNA

Must haves:

• 4–5 years in network engineering, with deep hands-on networking: routing, VPN/site-to-site, segmentation, DNS, firewalling
• Hands-on Software-Defined Networking: comfortable managing networks programmatically / as code rather than appliance-by-appliance (everything we run is IaC)
• Strong public-cloud networking experience, ideally GCP (VPCs, peering, hybrid connectivity)
• Comfortable operating on a Kuburnetes platform (k8s, Docker) and occasionally writing code
• Infrastructure-as-Code (Terraform or similar) and a CI/CD-driven, GitOps workflow
• An SRE mindset: SLOs, observability, and reducing toil through automation
• Ability to debug connectivity issues in a complex, hybrid network environment
• Degree in Computer Science or a related field, or equivalent practical experience

Nice to haves:

• Network certifications (CCNP or similar)
• Hands-on experience with GitOps frameworks (ArgoCD, FluxCD)
• Interest or experience in FinOps and cost-optimized architectures
• Familiarity with security practices: vulnerability scanning, threat detection, risk mitigation
• Understanding of orchestration in resource-constrained environments, like space systems

Some of our awesome benefits:

• 100% company-paid medical, dental, and vision insurance option for employees and dependents
• Flexible Spending (FSA) and Health Savings (HSA) Accounts offered with an employer contribution to the HSA
• 100% employer paid Life, AD&D, Short-Term, and Long-Term Disability insurance
• Flexible Time Off policy for vacation and sick leave, and 12 paid holidays
• 401(k) plan and equity options
• Daily catered lunches and snacks in office
• International exposure to our team in France
• Fully paid parental leave; 14 weeks for birthing parent and 10 weeks for non-birthing parent
• Carrot Fertility provides comprehensive, inclusive fertility healthcare and family-forming benefits with financial support
• Off-sites and many social events and celebrations
• Relocation assistance when applicable

Who We Are

Loft: Space Made Simple.

Founded in 2017, Loft provides governments, companies, and research institutions with a fast, reliable, and simple way to deploy missions in orbit.

We integrate, launch, and operate spacecraft, offering end-to-end missions as a service across Earth observation, IoT connectivity, on-orbit AI, national security missions, and more. Leveraging our existing space infrastructure and an extensive inventory of satellite buses, Loft is reducing years-long integration and launch timelines to months. With more than 30 missions flown, Loft’s flight heritage and proven technologies enable customers to focus on their mission objectives.

With a growing fleet on track to reach 30 satellites by 2027, we are scaling up quickly across our offices in San Francisco, CA | Golden, CO | and Toulouse, France to meet accelerating demand for space infrastructure.

As an international company your resume will be reviewed by people across our offices so please attach a copy in English.

157000 - 239000 USD a year

State law requires us to tell you the base compensation range for this role, which is $157,000- $239,000 per year . This is determined by your education, experience, knowledge, skills, and abilities. The salary range for this role is intentionally wide as we evaluate individuals based on their unique experience and abilities to fit our needs. Most importantly, we are excited to meet you, and see if you are a great fit for our team. What we can't quantify for you are the exciting challenges, supportive team, and amazing culture we enjoy.