Level

Fireworks AI

Member of Technical Staff, Traffic Infrastructure

Fireworks AI is hiring a Member of Technical Staff, Traffic Infrastructure for a remote role open to applicants in United States. It pays $175k-$220k a year and Level rates it ; you can apply on Fireworks AI.

Level's read on this job

  • Level rates this role Builds AI ●●●●: the job is building AI systems.
  • This is listed as a remote role.
  • The posting mentions PyTorch among its tools and skills.
  • Fireworks AI has 90 other open roles on Level.
  • Posted in the last few days.

AI in this role

pytorch

About Us:

Fireworks is the platform for specialized intelligence, enabling companies to build, train, and serve AI models tailored to their own data, workflows, and products. Founded by the team behind PyTorch and backed by AMD, Atreides, Benchmark Capital, Index Ventures, Lightspeed, NVIDIA, Sequoia Capital, and TCV, Fireworks powers production AI with hundreds of state-of-the-art open models across text, image, embedding, audio, and multimodal workloads. Today, Fireworks is a Series D company valued at $17.5 billion, bringing together an ambitious, collaborative team that's building the future of enterprise AI.

The Role:

As a Member of Technical Staff on our Traffic Infrastructure team, you will own the traffic layer behind our generative AI platform: the proxies, load balancers, service mesh, and routing systems that move every request reliably across regions and cloud providers. This is a highly technical role that calls for depth in distributed systems, cloud networking, and infrastructure, along with the judgment to balance latency, cost, and operational simplicity. You will partner closely with ML, product, and platform teams, and help set the technical direction for the team.

Key Responsibilities:

  • Architect and build scalable, fault-tolerant traffic and networking services, including ingress and egress, load balancing, routing, and quality-of-service controls.

  • Lead technical design discussions, mentor other engineers, and establish best practices for operating large-scale infrastructure.

  • Drive network optimization both inside and outside data centers, including cost reduction, performance tuning, and removing scaling bottlenecks.

  • Evaluate and integrate cloud-native and open-source technologies (e.g., Kubernetes, Envoy, Istio) to strengthen platform capabilities and reliability.

  • Own systems end to end, from design through deployment and observability, with an emphasis on high availability, disaster recovery, and operational excellence.

  • Develop and maintain comprehensive monitoring, alerting, logging, and tracing to give deep insight into system health and performance.

Minimum Qualifications:

  • Bachelor's degree in Computer Science, Engineering, or a related technical field (or equivalent practical experience).

  • 5+ years of experience building backend or network infrastructure in cloud environments (e.g., AWS, GCP, Azure).

  • Strong software development skills in languages such as Go, C++, Rust, Java, or Python.

  • Deep understanding of distributed systems and networking fundamentals, including performance optimization.

  • Full product lifecycle ownership, from design through implementation to production.

Preferred Qualifications:

  • Master's or PhD in Computer Science or a related field.

  • Hands-on experience with traffic or edge engineering, service mesh, or cloud networking (e.g., Envoy, Istio, DPDK).

  • Deep Kubernetes experience, including ingress, network policy, and custom controllers.

  • Track record of improving performance, reliability, and cost-efficiency on high-throughput systems.

  • Experience leading projects across teams and coaching distributed engineers.

Why Fireworks?

  • 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.

How we rate this

Member of Technical Staff, Traffic Infrastructure at Fireworks AI rates 94 out of 100 for how much of the daily work is AI. That makes it Builds AI (AI Level 4 of 4). The level is about AI in the job, not seniority.

Classification

Builds AI. The job is building AI systems.

  1. ●●●● Builds AI80 to 100
  2. ●●●○ Works on AI60 to 79
  3. ●●○○ Uses AI40 to 59
  4. ●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

PyTorch

Questions you could be asked

  1. What's a project where you used PyTorch hands-on?
  2. How would you decide a model or AI system is ready to ship?
  3. Tell me about a time a model underperformed in production. How did you find out, and what did you change?

Adapt your resume

  • List these exact terms on your resume: PyTorch. An applicant tracking system matches the wording, not the idea.
  • Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.
  • Lead with what you built, trained or shipped. This role is judged on the AI system itself, not the tools around it.

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