Research Engineer

Research Engineer/Scientist (Reinforcement Learning)Percepta's mission is to transform critical institutions with applied AI. We care that industries that power the world (e.g. healthcare, manufacturing, energy) benefit from frontier technology.To make that happen, we embed with industry-leading customers to drive AI transformation. We bring together:Forward-deployed expertise in engineering, product, and researchMosaic, our in-house toolkit for rapidly deploying agentic workflowsStrategic partnerships with Anthropic, McKinsey, AWS, companies within the General Catalyst portfolio, and moreOur team is a quickly growing group of Applied AI Engineers, Embedded Product Managers and Researchers motivated by diffusing the promise of AI into improvements we can feel in our day to day lives.Percepta is a direct partnership with General Catalyst, a global transformation and investment company.Role and ResponsibilitiesIdentifying which real-world challenges are tractable for RL-guided decision making.Develop RL methods to perform complex tasks in domains like planning, decision-making, or optimization.Develop and maintain the experimental infrastructure that powers our research, from simulation environments and data pipelines to training and evaluation frameworks.Conduct in-the-wild evaluations at scale that drive millions of dollars in value.Partner with our applied AI engineers to transition successful research ideas into robust features of our Mosaic platform.Communicate research outcomes to both technical and non-technical stakeholders, making sure everyone understands the "so what" of research and how to apply it.Indicators of a Good FitHave an MS/PhD in Computer Science, ML, or related field, or equivalent experience.Have a track record of effective RL work.Are motivated by impact in critical industries including healthcare, supply chains, energy, and finance.Understand how to perform rigorous RL experimentation.Enjoy extreme ownership.Believe that AI can drive transformative change in critical industries.The following list can be a sign that you might be a good technical fit:High performance, large scale distributed systems.Large scale LLM training or RL training.Possess strong programming skills, especially in Python.Implementing LLM post-training algorithms.Experience with vLLM/SGLang, Ray, Kubernetes (or AWS EKS).Experience with distributed checkpointing, multi-node, multi-gpu training, custom KV-caching.Experience with asynchronous training and inference, either with VeRL, ROLL, SkyRL, AReal, or with RL libraries like CleanRL .We're working against an incredibly ambitious mission. It won't be easy, but it will likely be the most fulfilling work of your career. If this excites you, let's chat, even if you don't meet all of the qualifications above.Our ValuesDream bigger: We have the unique privilege of taking on the most ambitious problems and we should chase them with optimism, responsibility, and genuine belief that we can make it happen. We have to embrace the hard things when no one else will. Heart in the game: What we're doing matters and we have to give a shit. Internally, that means fixing badness when you find it. Externally, it means honoring the trust our customers place in us with their most important problems. This isn't a 9-5, nor is it a job we're ever going to monitor your hours. We promise to put work in front of you that matters and in return, we ask you to promise to care. Win for the customer: Everyone is an engineer and the job of an engineer is to deliver outcomes, not outputs. Everything we do—the products we build, the partnerships we launch, the strategy we set—exists to make our customers successful. Delivery is the strategy. Make the call: Organizations are only as strong as the pace at which they make decisions. Everyone at Percepta should feel empowered to commit and shape the ambiguity in front of them. But "make the call" cuts both ways: make the decision and make the phone call. High-agency decision-making only works with high-bandwidth communication and we commit to never operate in silos. Intensity with kindness: We believe in excellence in execution, candor in feedback, ruthlessness in prioritization, and survivalist urgency. We also believe you don't need to be an asshole to deliver on any of this. The trust built through shared kindness and vulnerability is what makes the intensity sustainable.