Senior Site Reliability Engineer

4IR; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Fully remote work from anywhere

Comprehensive benefits

Collaborative, blame-free culture

Job summary

4IR is seeking a Site Reliability Engineer to help deliver mission-critical IT/OT infrastructure for industrial customers. You will design secure cloud/on-prem architectures, own incidents, and drive automation and reliability across environments.

You will work remotely from anywhere, collaborate with a small team, and help shape our operating standards, runbooks, and GitOps workflows while maintaining a blameless but accountable culture.

Qualifications

• 5+ years in SRE, DevOps, or Infrastructure Engineering.
• Strong Kubernetes skills in production environments.
• Experience with GitOps tooling (ArgoCD, Rancher Fleet, FluxCD, or similar).
• Solid understanding of Infrastructure-as-Code concepts (Terraform, Pulumi, Crossplane, or similar).
• Real incident response experience—on-call and calm under pressure.
• Comfort with heterogeneous environments and customer-site variety.
• Clear communication skills; write runbooks and gather requirements.
• Ability to operate in ambiguity.

Responsibilities

• Design complex IT/OT architectures in cloud and on-prem, secure and recoverable.
• Own customer solutions end-to-end: requirements, design, build, support.
• Deploy and manage Kubernetes-based infrastructure across environments.
• Build runbooks, alerts, and automation to reduce incidents.
• Define and monitor SLIs/SLOs to reflect customer priorities.

Skills

Kubernetes prod

GitOps tooling

IaC concepts

Incident response

Automation

Communication

Ambiguity handling

SRE mindset

Tools

ArgoCD

Rancher Fleet

FluxCD

Terraform

Pulumi

Crossplane

Job description

About This Role

We deliver mission-criticalIT/OTinfrastructure—including cloud and on-prem—for industrial customers thatcan'tafford downtime.

Small team. Hard problems. Practical solutions. No bureaucracy. No blame. No egos.

We ship it, own it, and make itbetter—blamelessbut accountable, shoulder to shoulder. We work hard. We stay human. We trust each other. Wefigureit out.

If you know what to do, delight in building it, and feel the ownership to support it—keep reading.

What You'll Do

Customer Delivery

• Design complex IT/OT architectures—in cloud and on-prem—that are secure, recoverable, and sized appropriately
• Work directly with customers to understand their environment and estimate effort
• Own customer solutions end-to-end: requirements design build support
• Build or use reusable modules when it makes sense—build bespoke when itdoesn't
• Deploy and manage Kubernetes-based infrastructure and stateful applications across diverse customer environments

Incident Response & Ownership

• Participate in on-call rotationalongside the rest of the team—everyone here supports what we ship
• Own incidents through resolution, then drive root cause analysis thateliminatesthe class of problem—not just the symptom
• Build the runbooks, alerts, and automation that make the next incident less likely or less painful

Infrastructure & Automation

• Workwith Infrastructure-as-Code tools to provision and manage diverse customer environments
• Implement and maintainGitOpsworkflows for in-cluster deployments
• Ensure all infrastructure and application changes are declarative and version-controlled
• Automate self-healing and system updates—reduce manual intervention and keep environments current

Observability & Reliability

• Build andmaintainmonitoring, alerting, and dashboards using Prometheus, Loki, and Grafana
• Define SLIs and SLOs that reflect whatactually mattersto customers
• Surface real problems, reduce noise, andcontinually improve reliability andteamefficiency

Shape the Future

• Wedon'thave everything figured out.You'llhelp build, create, and shape how we operate
• Contribute to standards, patterns, and processes that make us better—not bureaucracy for its own sake
• Bring the SRE mindset: automate toil, prefer boring/stable systems, and relentlessly improve

What We're Looking For

• 5+ years in SRE, DevOps, or Infrastructure Engineering
• Strong Kubernetes skills in production environments—you'lltroubleshoot real clusters, not just tutorials
• Experience withGitOpstooling (ArgoCD,Rancher Fleet,FluxCD,or similar)
• Solid understanding of Infrastructure-as-Code concepts (Terraform,Pulumi,Crossplane,or similar)
• Real incident response experience—you'vebeen on-call, stayed calm, and fixed things under pressure
• Comfort with heterogeneous environments—every customer site is a little different and you need to adapt
• Clear communication skills—you can write a useful runbook, gather requirements on a customer call, and document what you learned
• Ability tooperatein ambiguity—we're rebuilding clarity, not waiting for it

Strong Plus

• Azure experience (our primary cloud)
• Experience with SUSE ecosystem (SLE Micro, RKE2, Rancher, Longhorn)
• Industrial, manufacturing, or OT environment experience
• Familiarity withInductive Automation'sIgnition platform andMQTT
• Experience in a startup or small-team environment where you wore many hats

The SRE Mindset

This matters here. We need someone who:

• Sees repetitive manual work as a problem to automate, nota fact of life
• Prefers stable, predictable, "boring" production over clever and fragile
• Supports what they create—no throwing things over the wall
• Treats incidents as opportunities for systemic improvement
• Works well on a small team where everyone carries weight
• Stays current with SRE practices, emerging technologies, and cloud/edge trends

A Few Honest Words

This is a startup. Hours can be demanding. Priorities shift. Youwon'thave a team of30 backing you up.

What you will have: the autonomy to make real decisions, teammates who own their work, and customers who genuinely depend on what we build. We work hard because the work matters—and we have fun doing it.

If you wanta structured 9-5, predictability, and a clear ladder—thisprobably isn'tthe right fit.

If you want to build, learn, and be part of something that's actually going somewhere—let's talk.

What We Offer

• Comprehensive benefits (Medical, Dental, Vision, 401K)
• Fullyremote—workfrom anywhere in the world
• A team whereit'ssafe to be honest, learn from mistakes, and get better together