Staff Engineer, Enterprise Foundations - Platform & Security

Fireworks AI; New York (NY); On-site; USD 165,000 - 185,000; Full time

Job summary

Fireworks AI seeks an experienced backend engineer to own foundational capabilities end to end for enterprise customers. You will shape data models, APIs, and control planes, threading changes through the production stack, including training and inference components.

You will design multi-tenant authorization, metering, and encryption schemes for cloud deployments across AWS, GCP, and Azure. Collaboration with customers and security teams is essential in this high-impact role.

Qualifications

• 2+ years building and operating production backend or distributed systems at scale.
• Strong server-side engineering skills in Go, Python, C++, TypeScript, or similar.
• Experience designing APIs and data models that other teams build on, evolving them under live traffic.
• Hands-on depth in at least one major cloud (AWS, GCP, or Azure): IAM and workload identity, KMS, object storage, and VPC networking.
• Willingness to work directly with customers.

Responsibilities

• Own foundational capabilities end to end — data model and API through control plane, runtime, SDK/CLI, and console — and migrate live systems onto them.
• Design the primitives large customers organize around — organizations and sub-accounts, groups, roles, service identities — and connect them to enterprise directories through federation and provisioning (SSO, SCIM).
• Design multi-tenant authorization, policy enforcement, and audit systems that hold up in front of a security architect.
• Make usage metering, spend controls, and billing correct and legible at scale — customers reconcile our numbers against their own.
• Own data isolation and key management — customer-managed encryption keys across AWS, GCP, and Azure — threaded through datasets, fine-tuning, RL, checkpoints, models, and inference.
• Deploy and operate Fireworks inside a customer's own cloud, and solve data residency and regional isolation for customers with hard constraints.
• Use AI tooling aggressively — we expect you to automate yourself.

Skills

Go

Python

C++

TypeScript

Tools

AWS

GCP

Azure

Job description

Fireworks AI seeks an experienced backend engineer to own foundational capabilities end to end for enterprise customers. You will shape data models, APIs, and control planes, threading changes through the production stack, including training and inference components.

You will design multi-tenant authorization, metering, and encryption schemes for cloud deployments across AWS, GCP, and Azure. Collaboration with customers and security teams is essential in this high-impact role.