Senior Backend Engineer, AI-Native Infra – Onsite SF

Getsphere; San Francisco, Northern (CA, KY); Hybrid; USD 210,000 - 260,000; Full time

Benefits offered by this job

In-person: SF only

Job summary

Sphere is building AI-native trade infrastructure and seeks a senior infra engineer in San Francisco to tackle scaling and latency challenges across critical billing and tax-automation systems.

You’ll collaborate with engineering, own cloud-native architecture, and work with partners like Stripe and Chargebee to meet strict availability goals. In-person SF-based role with rapid deployment expectations.

Qualifications

• Experience managing Kubernetes clusters in AWS/GCP/Azure at scale.
• Extensive experience shipping high-quality architectures for mission critical systems (HA, high load, low latency).
• Experience with Postgres at scale.

Responsibilities

• Find solutions to Sphere's toughest scaling, performance, and latency problems.
• Work closely with engineering to define tooling to ship faster.
• Participate in an On Call rotation to solve critical production events.
• Work directly with customers like Eleven Labs, Replit, Windsurf, and partners like Stripe, Chargebee, on latency and availability requirements.
• Influence and implement the next generation of Sphere's database, real-time queue, and container orchestration infrastructure.
• Work across our engineering organization to introduce and scale best practices with cloud-native technologies like Amazon ALB, ECS/EKS, Temporal, AWS SQS, Amazon Aurora PostgreSQL, Elasticache Redis, and S3.
• Build abstractions within Terraform to simplify the architecture and increase velocity and ownership.

Skills

Kubernetes on cloud scale

High availability engineering

Performance optimization

Tools

AWS

PostgreSQL

Terraform

Docker

Job description

Sphere is building AI-native trade infrastructure and seeks a senior infra engineer in San Francisco to tackle scaling and latency challenges across critical billing and tax-automation systems.

You’ll collaborate with engineering, own cloud-native architecture, and work with partners like Stripe and Chargebee to meet strict availability goals. In-person SF-based role with rapid deployment expectations.