Founding Growth Product Manager (YC S21, 1M+ ARR, $6.3M+ raised)

Legion Health; San Francisco (CA); Hybrid; USD 110,000 - 160,000; Full time

Job summary

A leading mental healthcare company is seeking a Founding Growth Product Manager to drive patient acquisition and retention. You will design strategies and tools to enhance the patient journey, collaborating with a cross-functional team to optimize experiences. This role offers the chance to impact mental healthcare significantly while working in a fast-paced, innovative environment.

Benefits

Medical insurance

Vision insurance

Flexible PTO and vacation policy

Competitive stock options

Qualifications

• Experience in healthcare, subscription services, or telehealth.
• Ability to design and execute growth experiments.

Responsibilities

• Design the entire patient journey funnel from acquisition to engagement.
• Monitor funnel performance to increase conversion and reduce drop-off.

Skills

Growth-focused role

Cross-functional collaboration

Data-driven decision-making

Education

3+ years in a growth-focused role

Tools

PostHog

Segment

Amplitude

Mixpanel

Job description

Founding Growth Product Manager (YC S21, 1M+ ARR, $6.3M+ raised)

Join to apply for the Founding Growth Product Manager (YC S21, 1M+ ARR, $6.3M+ raised) role at Legion Health

Founding Growth Product Manager (YC S21, 1M+ ARR, $6.3M+ raised)

Join to apply for the Founding Growth Product Manager (YC S21, 1M+ ARR, $6.3M+ raised) role at Legion Health

Legion Health is on a mission to deliver the best psychiatric care in the world—and to do it at scale.

We’re building the first AI-native mental healthcare company that uses generative AI to automate every possible operational and administrative task, freeing up clinicians to focus on what matters most: patient care. By combining deep clinical expertise with AI-powered operational infrastructure, we’re creating a system that continuously learns from every interaction while radically improving access, speed, and outcomes.

Today, we're turning weeks-long wait times into same-day appointments, crafting seamless digital experiences in a broken healthcare system, and scaling a company that patients genuinely trust.

The Opportunity

We’re looking for a Founding Technical Growth Product Manager to lead the charge in building Legion Health’s patient acquisition, onboarding, and retention engine.

You’ll design the full growth stack—strategy, systems, tools, and processes—to drive exponential patient growth and retention. From first-click attribution to long-term engagement loops, you’ll transform our AI-powered psychiatric care platform into a scalable, high-conversion, high-retention consumer health experience.

You’ll collaborate directly with our founding team, growth lead, engineers, and clinicians. You’ll also own the technical side of growth, including analytics implementation, source attribution, onboarding instrumentation, and growth experiment architecture.

What You'll Do

• Design the entire patient journey funnel—from acquisition through onboarding, activation, and long-term engagement.
• Model and diagram the full user journey to identify friction points, drop-off stages, and time-to-value delays.
• Develop a structured tracking plan for every event in the onboarding funnel—specifying event purpose, event properties, and exact collection method.
• Collaborate with design and engineering to optimize layout, copy, and flow across mobile and desktop experiences.
• Replace fragmented tools and forms with a unified, event-instrumented onboarding experience.
• Integrate real-time eligibility checks into onboarding flow using API calls to payer databases.
• Enable behavioral re-engagement using event-triggered SMS/email communications (e.g. reminders to complete intake or schedule visit).
• Monitor funnel performance at every step to increase conversion and reduce drop-off.
• Ensure real-time data syncing into EMR and internal systems for downstream automation.
• Fully implement a modern analytics stack using:
• PostHog for product analytics and experimentation
• Google Analytics for acquisition insights
• Segment (or equivalent) for clean, centralized event collection
• Ensure all events are tracked client-side (clicks) and server-side (successes/outcomes).
• Use this stack to power dashboards, experiments, attribution, and lifecycle communications.
• Build a source-of-truth attribution system for every patient:
• Attribute users by acquisition channel (e.g., Psychology Today, paid search, word-of-mouth, social, SEO).
• Integrate self-reported survey responses (“How did you hear about us?”) to enrich tracking data.
• Ensure consistent UTM usage and campaign tagging across:
• All internal and external links (ads, emails, directory profiles)
• All landing pages and signup flows
• Create dashboards that tie attribution sources to downstream metrics like conversion to visit, CAC, and LTV.

Centralized Growth Metrics & Reporting

• Integrate and visualize all core growth KPIs from Legion’s internal sources (scorecards, ops dashboards, spreadsheets) into PostHog or equivalent.
• Metrics include:
• CAC (cost per retained user)
• Funnel conversion at every onboarding step
• Real-time provider availability metrics
• Time-to-intake and time-to-first-visit
• Weekly LTV and churn rates
• Build and maintain automated dashboards and alerting systems to enable fast decision-making and cross-team transparency.
• Implement tooling for A/B testing across key conversion points, including landing pages, onboarding screens, and communication flows.
• Design rigorous experiments with control/test logic, statistical significance thresholds, and clear success metrics.
• Test and optimize:
• CTAs
• Page layouts and messaging
• Eligibility flow structure
• Transactional and marketing emails
• Use experiment outcomes to guide product and growth roadmap.
• Own Legion’s SEO roadmap and technical setup—from meta-tagging to AI-generated content and site performance.
• Design and run SEO A/B tests:
• Group similar pages (e.g., by diagnosis or region) into test/control cohorts
• Modify page-level elements (copy, CTA, H1 tags, structure)
• Attribute resulting traffic changes using PostHog or equivalent
• Ensure Legion content is AI-search optimized (e.g. ChatGPT Browse, Perplexity, Google SGE).
• Monitor and optimize SEO content ranking, CTR, and conversion metrics.
• Build viral loops into the product—referral links, post-visit share prompts, etc.—that drive unpaid organic growth.
• Create a native paid referral funnel, including attribution, fraud protection, and campaign management.
• Instrument and track:
• % of users exposed to referral options
• % who share invites
• Sign-up, visit, and retention rates of referred users
• Implement automated lifecycle communications (email/SMS) to increase referral funnel conversion.
• Work hand-in-hand with:
• Our Growth Lead, who currently generates high-quality leads from healthcare directories.
• Our engineering team, to build new funnel components and refine existing tools.
• Our clinical and operations teams, to ensure tech-powered growth doesn’t compromise clinical excellence.
• Our Designer, to execute UX/UI improvements that reduce friction and increase conversion.

You’ll be measured on your ability to:

• Increase “touchless” conversion rates at key funnel stages (especially lead → intake → first appointment).
• Reduce time-to-value (e.g., signup to first appointment).
• Centralize and visualize growth metrics for the team using a modern growth stack.
• Create measurable increases in retention and NPS (Net Promoter Score).
• Identify and implement onboarding improvements that enable Legion to scale to 10,000+ retained patients.

What You’ll Bring

• 3+ years in a growth-focused role, ideally at a B2C company in healthcare, subscription services, or telehealth.
• Proven ability to design and execute growth experiments that drive conversion, retention, and LTV.
• Deep experience with tools like PostHog, Segment, Amplitude, Mixpanel, etc.
• Fluency in A/B testing design, event instrumentation, and growth stack implementation.
• Exceptional cross-functional collaboration and project ownership.
• Strong product intuition paired with data-driven decision-making.
• Passion for improving access to mental healthcare and making patient experiences radically better.

Bonus Qualifications

• Prior experience working in HIPAA-compliant environments.
• Familiarity with AI and machine learning applications in consumer products.
• Strong understanding of consumer psychology and behavioral design.
• Experience taking products from early traction to large scale (10k+ MAUs or $10M+ revenue).
• Experience building growth teams or internal growth playbooks.
• Salary: $110,000 – $160,000 (based on experience)
• Equity: Competitive stock options
• Time Off: Flexible PTO and vacation policy
• Work Setup: In-person/hybrid in San Francisco HQ
• Impact: Work on something that truly matters—in the lives of patients, families, and clinicians

At Legion Health, you’ll join a team that deeply believes the future of mental health lies in combining clinical excellence with AI-driven operational innovation.

You’ll build systems that make care radically more accessible, more efficient, and more human. You’ll help transform every patient’s first experience with psychiatry—and help us scale care that actually works.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Product Management

• Industries

  Mental Health Care, Software Development, and Technology, Information and Media

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Inferred from the description for this job

Medical insurance

Vision insurance

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