Heartflow - Senior Platform Engineer (Cloud Foundations)
Requirements
• Several years of platform, infrastructure, SRE, or DevOps engineering, including at least one migration of production workloads to a new platform or architecture. Fargate or ECS to Kubernetes is the closest match; serverless to containers is also relevant. • Strong working knowledge of Kubernetes on AWS (EKS): networking, security, scaling, and day-two operations. • Solid AWS experience across compute (Lambda, ECS, EKS), data (RDS), API Gateway, VPC networking, and IAM. • Production experience with Terraform, and comfort with Helm. • Scripting and automation skills in Bash, Python, or Go. • Hands-on experience with CI/CD systems and containers. • Clear written and verbal communication, and a record of influencing technical decisions across teams. • Experience with AWS CDK, including reading and refactoring existing stacks. • Experience with KEDA or other event-driven scaling on Kubernetes. • Experience with Terragrunt, Harness, or an internal developer portal such as Cortex or Backstage. • Windows or Linux systems administration. • Experience in a regulated environment such as healthcare, finance, or medical devices, including change control and audit evidence. • Experience with monorepos. • Prior ownership of a multi-quarter technical initiative.
Responsibilities
• Migration (first project) • Contribute to migration patterns and reference implementations for moving CDK-based serverless applications to EKS, while supporting cross-account interoperability during the migration window. • Translate existing CDK stacks into Terraform/Terragrunt, Helm, service templates, and developer portal integrations. • Develop robust, scalable, and automated solutions for running event-driven, serverless-like workflows on Kubernetes, potentially utilizing technologies like KEDA or similar cloud-native tools. • Plan data-tier and API cutovers that keep downtime and risk low. • Work with application teams to understand their workloads, sequence their moves, and give them the tooling and documentation to migrate with little hand-holding. • Benchmark migrated services, tune resource requests and limits, and confirm that observability and service-level objectives match or beat what they were before. • Platform (ongoing) • Platform (ongoing) • Build and maintain cloud foundations: account structure, networking, IAM, and shared services, all as code. • Contribute to SRE practices: SLOs, alerting, incident response, capacity and cost management, and an on-call rotation as the team matures. • Improve developer experience through Harness pipelines, golden paths, and the Cortex service catalog, treating internal engineers as the platform's customers. • Write standards, guardrails, and runbooks that other teams can follow without asking us. • Support Linux and Windows systems where the platform requires them, with automation preferred over manual work.
Benefits
• You will shape a platform while it is still being built, starting with a well-defined, high-impact migration and growing into the broader foundation, reliability, and developer-experience work. The work supports products used in patient care, in an environment where reliability, security, and traceable change management matter.
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