Member of Technical Staff, Software Engineer

About Us: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.In the last few months alone we launched Fireworks Training, partnered with Microsoft Azure Foundry, and published research straight from our production systems. A few examples of what that looks like in practice:Frontier RL is cheaper than the mega-cluster narrative suggests: we ran cross-region rollouts using 98% sparse weight deltas and published what we learned. (blog)Open source agents with frontier advisors: matching frontier performance through training and harness engineering. (blog)The fine-tuning bottleneck is not the algorithm: integration friction and iteration speed are what actually stall teams; we documented the patterns across dozens of customer engagements. (blog)The Role:You’ll be a core builder of the backend systems that power Fireworks:Our main web applicationModel and fine-tuning job orchestrationBilling and enterprise featuresAccounts, org management, access controlsPolicy enforcement and governanceAPIs and developer toolingAnd 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.What You’ll DoDesign and build scalable backend servicesOwn major product surfaces from architecture to productionImprove reliability, performance, and developer experienceWork directly with customers to understand pain pointsShip enterprise-grade features without enterprise slownessUse AI tooling aggressively — we expect you to automate yourselfYou Might Be a Fit IfYou like building real products, not just infrastructure for infrastructure’s sakeYou enjoy driving initiatives across teams to get things doneYou think in terms of systems, tradeoffs, and business impactYou care about developer experience and clean abstractionsYou’re curious about AI and want to build where the future is goingYou want ownership, not task listsMinimum QualificationsComfortable collaborating with both humans and AI systems (Yes, We’re Serious)5+ years of experience helping humans solve real problems2+ years of working with AI — agents, bots, chats, or building on top of modelsWhy Fireworks AI?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.Fireworks AI is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all innovators.