# Senior SRE
**Company:** [Pylon](https://hotfix.jobs/companies/pylon)
**Location:** San Francisco, CA
**Experience:** 4+ years
**Skills:** AWS, ECS, Rds, Terraform, Cdk, Nix, Honeycomb, OpenTelemetry, TypeScript, Postgres, Node.js, Python, GitHub Actions, Kubernetes, SLOs
**Posted:** 2025-10-17
> Senior SRE owns production system reliability, designs monitoring/alerting, builds automation tooling, and ensures operational excellence in a regulated fintech environment. Requires 4+ years SRE experience, deep AWS expertise, on-call at scale, and Nix.
## Job Description
## Responsibilities
- Own reliability and operational excellence for production systems
- Design and implement monitoring, alerting, and incident response processes
- Build tooling to improve engineering team effectiveness
- Establish on-call rotations and runbooks
- Ensure platform handles demands of regulated financial product
- Spend 50%+ time writing code: infrastructure tooling, automation, reliability improvements, developer productivity tools

## Requirements (Must-haves)
- 4+ years experience in SRE, infrastructure, or platform engineering
- Experience on a team of SREs at company with mature SRE practices
- Real on-call experience at scale in large production environment
- Deep AWS expertise (ECS, RDS, networking, security)
- Strong experience with declarative infrastructure (Terraform, CDK, or similar)
- Nix experience
- Track record of building reliability tooling and automation
- Can design and implement monitoring, alerting, and observability systems from first principles
- Comfortable in regulated environment

## Nice-to-haves
- Experience at companies with strong SRE cultures (Google, Replit, Stripe, etc.)
- Background in fintech, healthtech, or regulated domains
- Experience migrating monitoring systems or implementing SLOs
- Contributions to infrastructure tooling or open source projects

## Technology Stack
**Infrastructure:** AWS (ECS, RDS, CloudFront, Lambda), CDK  
**Observability:** Honeycomb, OpenTelemetry  
**CI/CD:** GitHub Actions, Nix  
**Core platform:** TypeScript/Node, PostgreSQL, React  
**Languages:** TypeScript, Python, Nix, SQL

## Compensation & Benefits
- Stock options
- Health insurance, 401K, dental
**Apply:** https://hotfix.jobs/jobs/senior-sre-at-pylon-9a15a187-3359-4c36-9826-76324425a88a
**Canonical:** https://hotfix.jobs/jobs/senior-sre-at-pylon-9a15a187-3359-4c36-9826-76324425a88a