Staff Platform Engineer

Charlie Health

2d•$185,000 - $265,000•Remote

About The Position

Charlie Health is a rapidly growing organization dedicated to connecting people with life-saving behavioral health treatment through personalized, virtual care. Our mission is to expand access to meaningful care and drive better outcomes from the comfort of home. The Core Platform team's role is to support Charlie Health's other engineering teams by building the patterns, services, and guardrails that make them faster, safer, and more consistent. As a Staff Platform Engineer on Core Platform, you will own our Core Services and contribute to our AI-Native SDLC initiative, focusing on areas like quality gates, test foundations, safe automated delivery, or AI-assisted development. You will take ownership from design through production operation, setting the standards for the team. Every engineer is a tech lead, and as a Staff engineer, you are a domain owner, making critical technical decisions that impact multiple teams. You will work with experienced engineers who own platform primitives, building with AI as the default, where plans are the primary input, agents draft implementations, and quality gates ensure safety in a HIPAA-regulated environment.

Requirements

7+ years of software engineering experience, including several years designing and operating distributed systems or platform components that other teams build on
Depth in at least one of these areas: test automation at scale (unit and integration standards, end-to-end coverage of critical flows, flake control), enabling AI code review at scale, or authorization systems with ReBAC and RBAC models (Auth0 FGA, Zanzibar, OpenFGA, Cedar, or similar)
Experience with skills, MCPs, harnesses, agentic tooling ecosystems, or agent orchestration for software development
You build with AI agents as part of your daily work. You write plans that agents can implement, run agents for real delivery, and know where agent output needs human judgment
Experience with data modeling for systems of record, including safe schema changes against live production data
Proficiency in the stack we run: Python and/or TypeScript services, Postgres, and AWS
A track record of driving workstreams that span multiple engineers and quarters without people authority
Comfort operating production critical-path systems, including on-call, in a regulated environment
Clear, direct communication with engineers, product partners, and leadership

Nice To Haves

Progressive delivery tooling (feature flags, canary deployments) and end-to-end frameworks such as Playwright at scale
Healthcare data standards (FHIR, HL7v2) and engineering in a HIPAA-regulated environment
An incremental monolith-to-services migration you led
Time on a platform or developer experience team
Fluency with domain-driven design or event storming

Responsibilities

Own one or more platform or SDLC primitives end to end, from architecture and build through production operation and long-term evolution
Build the deterministic quality gates that let agent-written code ship safely: automated end-to-end testing, golden test datasets, and schema change safety
Roll out AI code review safely, and contribute to the organization’s best-practices guide for AI-assisted development
Deliver core services on the team's own paved roads, finding the potholes before any product squad does
Mature authentication and authorization standards across the platform, including agent identity: scoped, short-lived, audited credentials for non-human principals
Write plans that name invariants, error cases, security implications, and acceptance criteria, and orchestrate agents across hard multi-PR work
Coach Senior engineers and product squad engineers on agentic engineering best practices and platform patterns
Define the reliability conventions for your area: SLO definitions, observability standards, and incident response practice, including a seat in the on-call rotation
Steward the security and compliance posture of your primitive, and stay aware of what it costs to run
Document the standards in your domain as architecture decision records and bring them through our Architecture Advice Guild