# Senior Software Engineer, Infrastructure

**Company:** [Decagon](https://hotfix.jobs/companies/decagon)
**Location:** San Francisco, CA, New York, NY
**Role:** DevOps / SRE
**Salary:** $250k – $330k/yr
**Experience:** 5+ years
**Skills:** Terraform, Kubernetes, GKE, EKS, Aks, Prometheus, Grafana, Datadog, OpenTelemetry, Pagerduty, GCP, AWS, Azure, GitOps, CI/CD
**Posted:** 2026-01-28

> Senior Infrastructure Engineer designs, builds, and operates high-scale, low-latency production systems including networking, data, ML serving, and developer platforms. Requires 5+ years experience, strong SLO/observability skills, and expertise in areas like Kubernetes and multi-cloud.

## Job Description

## About the Team
The Infrastructure team builds and operates foundations powering Decagon: networking, data, ML serving, developer platform, and real-time voice. Focus areas include Core Infra (networking, compute, storage, security, IaC), Data Infra (streaming/batch platforms), ML Infra (GPU/model serving), Platform (CI/CD, core services), and Voice Infra (telephony/WebRTC).

## About the Role
Senior Infrastructure Engineer designing, building, and operating production infrastructure for high-scale, low-latency systems. Own critical services end-to-end, improve reliability/performance, and create paved-paths for confident shipping.

**In this role, you will**
- Design and implement critical infrastructure services with strong SLOs, clear runbooks, and actionable telemetry.
- Partner with research and product teams to architect solutions, prototype, evaluate performance, and scale features.
- Tune service latencies: optimize networking, caching/queuing, CPU/memory/I/O for tight p95/p99s.
- Evolve CI/CD, golden paths, and self-service tooling for developer velocity and safety.
- Support deployment architectures with observability and upgrade paths.
- Lead infrastructure-as-code (**Terraform**) and GitOps; reduce drift with reusable modules and policy-as-code.
- Participate in on-call and drive down toil through automation.

**Your background looks something like this**
- **5+ years** building and operating production infrastructure at scale.
- Depth in **at least one** area across Core/Data/AI-ML/Platform/Voice, with curiosity to learn the rest.
- Proven track record meeting **high availability** and **low latency** targets (owning SLOs, p95/p99, load testing).
- Excellent observability (**OpenTelemetry**, **Prometheus/Grafana**, **Datadog**) and incident response (**PagerDuty**, SLO/error budgets).
- Clear written communication and ability to turn ambiguous requirements into simple, reliable designs.

**Even better if you have**
- Experience as early backend/platform/infrastructure engineer.
- Strong **Kubernetes** (**GKE/EKS/AKS**) and multi-cloud (**GCP**, **AWS**, **Azure**).
- Experience with customer-managed deployments.

**Compensation**
$250K – $330K + equity.

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**Apply:** https://hotfix.jobs/jobs/def51027-c615-4950-acba-e46662dd6b9a
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