Member of Technical Staff, Backend/Platform Engineer

Fireworks AI•San Mateo, CA

About The Position

At Fireworks, we’re building the future of generative AI infrastructure. Our platform delivers the highest-quality models with the fastest and most scalable inference in the industry. We’ve been independently benchmarked as the leader in LLM inference speed and are driving cutting-edge innovation through projects like our own function calling and multimodal models. Fireworks is a Series C company valued at $4 billion and backed by top investors including Benchmark, Sequoia, Lightspeed, Index, and Evantic. We’re an ambitious, collaborative team of builders, founded by veterans of Meta PyTorch and Google Vertex AI. The Role: You’ll be a core builder of the backend systems that power Fireworks: Our main web application Model and fine-tuning job orchestration Billing and enterprise features Accounts, org management, access controls Policy enforcement and governance APIs and developer tooling And many other cool things! This is platform engineering with product impact. Your systems will directly shape how customers build on top of AI. You’ll work closely with product, frontend, infra, and GTM to ship end-to-end features — not just tickets.

Requirements

Comfortable collaborating with both humans and AI systems (Yes, We’re Serious)
18+ years of experience helping humans solve real problems
2+ years of working with AI — agents, bots, chats, or building on top of models

Nice To Haves

You like building real products, not just infrastructure for infrastructure’s sake
You enjoy driving initiatives across teams to get things done
You think in terms of systems, tradeoffs, and business impact
You care about developer experience and clean abstractions
You’re curious about AI and want to build where the future is going
You want ownership, not task lists

Responsibilities

Design and build scalable backend services
Own major product surfaces from architecture to production
Improve reliability, performance, and developer experience
Work directly with customers to understand pain points
Ship enterprise-grade features without enterprise slowness
Use AI tooling aggressively — we expect you to automate yourself

Benefits

Solve Hard Problems: Tackle challenges at the forefront of AI infrastructure, from low-latency inference to scalable model serving.
Build What’s Next: Work with bleeding-edge technology that impacts how businesses and developers harness AI globally.
Ownership & Impact: Join a fast-growing, passionate team where your work directly shapes the future of AI—no bureaucracy, just results.
Learn from the Best: Collaborate with world-class engineers and AI researchers who thrive on curiosity and innovation.

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