Senior Full-Stack Engineer

About the role

About the Role We're a well-funded MLOps and agentic AI platform company — backed by prominent investors and with a proven, Kubernetes-native infrastructure stack deployed at enterprise scale. We're looking for a Senior Full-Stack Engineer to help us scale our product from robust backend orchestration to intuitive, high-performance frontend interfaces. You'll work across the entire stack to build, visualize, and iterate on predictive simulations that power decision-making for product teams. This is a central, high-impact role that sits at the intersection of ML infrastructure, data visualization, and product UX — and you'll have real ownership from day one. What You'll Do Build and maintain features across our core web platform, end-to-end from database to UI. Develop tools to visualize agent behavior, including heatmaps, flow maps, and persona-level insights. Collaborate closely with ML and infrastructure teams to integrate LLM-driven agents, model outputs, and user simulations into the product. Own internal tools and dashboards for analyzing agent performance, debugging simulations, and tracking cluster behavior. Help shape UX for features like task authoring, experiment comparisons, and adaptive UI recommendations. Ship weekly, iterate on feedback, and help define engineering best practices as the product scales. What We're Looking For Must-haves: 3+ years of full-stack engineering experience delivering applications across backend services and frontend UI. Strong proficiency in Python . Experience building scalable distributed systems and orchestration logic. Hands-on experience working with LLMs , and familiarity with tooling such as Langfuse, LangChain, or similar frameworks. Strong CS fundamentals with the ability to own features end-to-end. Nice to have: Experience designing and implementing data visualization dashboards for product or analytics teams. Background in AI, behavioral modeling, or cognitive science concepts relevant to simulation engines. Compensation & Benefits Salary: $180,000 – $200,000 USD per year Competitive equity package Please note: visa sponsorship is not available for this role. Location This is a hybrid role based in San Francisco, CA . You'll be expected to work from the office on a regular basis alongside a collaborative, fast-moving team.