Enterprise Foundations Engineer - Core Platform & Security

Fireworks

New York (NY)

On-site

USD 180,000 - 240,000

Full time

14 days+

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Job summary

Fireworks is seeking a senior backend/platform engineer to own end-to-end enterprise foundation capabilities, from data models and APIs to control plane and console. You will migrate live systems, design multi-tenant primitives and federation, and ensure secure, scalable usage metering across customer deployments.

You will work with live enterprise deals, security reviews, and customer conversations, owning domains from requirements to production.

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, and willingness to work outside your primary layer to land a feature.
Experience designing APIs and data models that other teams build on, and evolving them under live traffic without breaking callers.
Hands-on depth in at least one major cloud (AWS, GCP, or Azure): IAM and workload identity, KMS, object storage, and VPC networking.
A track record of owning an ambiguous, cross-team workstream from requirement through production.
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.