Growth Marketer

Ray; Cambridge (MA); On-site; USD 115,000 - 150,000; Full time

Benefits offered by this job

Equity

Unlimited vacation

401K

Free lunch at IDEO building

Job summary

Ray is seeking its first dedicated growth marketer to own growth at Ray. This hands-on role includes writing copy, briefing creators, building pages, and reading data, reporting to the CEO in Cambridge, MA.

You will test quickly, kill the losers, and scale the winners into engines that run weekly. Collaborate with engineering and design to ship growth inside the product and work with creators, fitness communities, and partners using AI for efficiency.

Qualifications

• 5+ years in consumer growth with real-time metrics and subscription products.
• Hands-on proven success in one or two acquisition channels.
• Data-driven with cohorts, funnels, and incrementality.
• Experience using AI in marketing for creative, copy, and automation.

Responsibilities

• Run a real experiment pipeline: hypothesis, test, results, scale or kill.
• Maintain a ranked backlog of growth bets and justify priorities.
• Expand growth through product, creators, communities, and search.
• Partner with engineering and design to ship in-product growth features.
• Scale winning experiments into repeatable channels with reporting.
• Leverage AI for creative production, copy, and data analysis.
• Collaborate with marketing coordinator to execute tests quickly.
• Keep paid social efficient while exploring new growth engines.

Skills

Growth marketing

AI in marketing

Data fluency

Cross-functional collaboration

Tools

PostHog

RevenueCat

SQL

Customer.io

Job description

About Ray

Ray is building an AI-powered personal trainer for everyone, on a mission to help millions of people stay healthy through technology that can speak, listen, and watch you work out. We're a small, fast-moving team shipping daily. The app is live, growing, and rated 4.8 on the App Store. People who find Ray love it. The job now is helping a lot more people find it.

The Role

We're hiring our first dedicated growth marketer to own growth at Ray. Paid social got us here. The next phase comes from everywhere: organic, the product itself, creators, community, and search.

You’ll report directly to the CEO and work closely with the whole team, including engineering and design when growth lives inside the product. The mandate is simple: test fast, kill the losers, and scale the winners into engines that run every week.

This is a hands‑on role. You’ll write the copy, brief the creators, build the pages, and read the data yourself.

What You’ll Do

• Run a real experiment pipeline. Form the hypothesis, build the test, read the results, then double down or kill it without sentiment
• Keep a ranked backlog of growth bets and be able to explain why the top one is at the top
• Start with our current hypotheses and add your own: growth loops built into the product, creator and UGC partnerships, App Store growth, referral and word of mouth, content and search, and partnerships with gyms, trainers, and fitness communities
• Partner with engineering and design to ship growth inside the product: referral mechanics, share moments, onboarding experiments
• Take the ones that work from experiment to channel. When something repeats, build the process, the creative pipeline, and the reporting so it keeps working without you touching it every day
• Use AI as leverage across everything: creative production, copy, analysis, automations. Part of the bet here is that a small team working with AI well can out-execute a big one. Fast never means sloppy: everything that ships should feel like Ray
• Work with our marketing coordinator, who runs day‑to‑day social and creator logistics, so your tests get executed fast
• Keep our paid social honest and efficient while you build what comes next

What We’re Looking For

• 5+ years in consumer growth, with real time at a subscription product. You’ve seen LTV, CAC, and payback from the inside
• Deep, hands‑on proof in one or two acquisition channels. You personally made it work, not an agency you managed or a team you watched. We don’t expect you to have done all of the above
• Data fluency: cohorts, funnels, incrementality. You don’t need an analyst to tell you whether a test worked
• Already working with AI in your marketing, today. Not dabbling: generating and testing creative, drafting copy, building automations, digging through data with it every week
• Taste. AI makes it easy to make more; it doesn’t make it good. You know the difference
• Strong communication skills. You’ll be working with creators, freelancers, engineers, and the CEO, and you write clearly
• Interest in fitness. You should want to use Ray

Nice to Haves

• Growth work at a health, fitness, or wellness brand
• Product‑led growth experience: you’ve shipped referral flows, share moments, or onboarding experiments with an engineering team
• ASO or App Store featuring experience
• SQL and light analytics chops
• Experience with PostHog, Customer.io, RevenueCat, or similar tools

Compensation & Benefits

• Salary: $115,000-$150,000 – depending on experience
• Work setup: In-person, 5 days a week, Cambridge, MA
• Other Benefits: Meaningful equity, unlimited vacation, access to 401K, free lunch every Tuesday at the IDEO building