Responsibilities

We're looking for an ML infrastructure engineer to own model evaluation at Runway, end to end. Every decision we make about a model – which checkpoint to keep training, what to ship to millions of users, which datamix and architecture shows the most promise – rests on evals. Today that work is spread across the organization. You'll turn it into one platform.
Your job will be to design and build the systems that generate samples at scale, score them with automated metrics and human annotations, track results across checkpoints and releases, and put the answers in front of researchers in minutes rather than days. You'll define what "better" means operationally – how we measure it, how confident we are, and how a result becomes a ship/no-ship decision.
You'll be embedded within research teams as a member of ML Platform, and you'll set the technical direction for evals across the company. This is an extremely high-leverage role: the quality of our models is bounded by how well we can measure them.
A peek at our technical stack
Our inference and training code is written in Python (PyTorch) and is cloud-native. We leverage multiple clouds and use a combination of Kubernetes native and home-grown tooling for efficient job orchestration.
We’re big users of agentic development and operations. We have a robust internal platform and provide broad access to the latest models and harnesses.
You’ll have access to best-in-class models, agents, GPUs, storage and cloud services you need to drive a world class evaluation pipeline that helps us deliver frontier models.
Own the evaluation platform end to end: the tooling and systems required to generate, annotate, review and adapt at frontier scale
Define the CLIs, APIs, GUIs and storage layers required to make this process seamless, fast, sophisticated and collaborative
Work directly with research teams on video, image, audio, agents, and robotics to understand what they need to measure and build it, then generalize the result into the platform
Help set the standards for how we evaluate models at Runway: reproducibility, metric definitions, reporting formats, and when a result is trustworthy enough to act on
Support broad adoption of the platform and its integration throughout Runway’s research efforts across training, production model serving and more

Qualification

Strong Python and PyTorchAbility to lead a broad technical areaHumility and open mindednessLastlyWorking at Runway

Required

5+ years of experience building ML infrastructure or data platforms in production environments, with at least some of that time spent on evaluation, experimentation, or benchmarking systems
Strong Python and PyTorch, and hands-on experience running large batch GPU workloads on Kubernetes
Experience designing data pipelines and storage for large volumes of media or model outputs, with attention to versioning and reproducibility
Familiarity with experimental statistics: paired comparisons, confidence intervals, multiple-comparison pitfalls, inter-rater agreement
Comfort building internal tools end to end, from the command line to the browser
Ability to lead a broad technical area: gather requirements from many teams, set direction, make tradeoffs, and drive a roadmap without waiting to be told
Familiarity with the full model development lifecycle: data, training, evaluation, serving
Self-starter who can work embedded with research teams and move fast
Strong systems thinking and pragmatic approach to production reliability
Humility and open mindedness; at Runway we love to learn from one another

Preferred

Track record of building evaluation suites for generative models
Hands-on work with LLM- or VLM-as-judge pipelines
Experience with online experimentation platforms and connecting offline metrics to product outcomes
Prior work evaluating agents or robotics policies
Runway strives to recruit and retain exceptional talent from diverse backgrounds while ensuring pay equity for our team. Our salary ranges are based on competitive market rates for our size, stage and industry, and salary is just one part of the overall compensation package we provide.
There are many factors that go into salary determinations, including relevant experience, skill level and qualifications assessed during the interview process, and maintaining internal equity with peers on the team. The range shared below is a general expectation for the function as posted, but we are also open to considering candidates who may be more or less experienced than outlined in the job description. In this case, we will communicate any updates in the expected salary range.
Lastly, the provided range is the expected salary for candidates in the U.S. Outside of those regions, there may be a change in the range, which again, will be communicated to candidates.
Working at Runway

Member of Technical Staff, ML Platform at Runway ML · LumiJobs

Member of Technical Staff, ML Platform

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Runway ML

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