Lead Software Engineer, Backend

About Cylinder Founded in 2021 and offered as an employer benefit, Cylinder (formerly Vivante Health) delivers personalized, clinician-backed care to those suffering from digestive issues through its virtual health platform. Cylinder's tech-forward, human-first program connects members to the right level of support at the right time through an easy interface, bringing the healthcare ecosystem together to align around member needs. Cylinder's dedicated care teams help members proactively address their gut health from every angle – decreasing costs, reducing absenteeism, and improving their quality of life, at scale. Cylinder's vision is to create a world where people receive convenient, personalized, and affordable access to the quality digestive healthcare they need to improve their overall health. Position Summary As a Lead Software Engineer at Cylinder, you will be a technical leader and owner of feature delivery, helping build and scale our digestive health platform. You'll be a hands-on technical leader — comfortable jumping into architecture discussions, code reviews, and technical decisions. A meaningful part of this role involves leading your team in building AI-powered features, collaborating with our data and clinical teams on LLM-based experiences and model integrations. You'll partner closely with product, clinical, and data teams to deliver high-quality software that directly improves outcomes for our members. Our backend services are developed mostly in Go and run in GKE (k8s) or directly on other GCP serverless frameworks, with GitHub and Terraform powering the DevOps environment. Why is this a great opportunity? - The problem domain and our approach to solving it is super compelling. We're bringing together data sources that have never been joined, building models of a GI patient that have never been built, and discovering new GI health insights that help real people to manage and support their real medical conditions. - It's still early enough that t