The Challenge
Bitstack is a YC-backed crypto-native bank with 300K+ users reshaping how people save and spend money. You'll own the growth engine—turning user behavior into durable, compounding growth across activation, retention, and revenue.
Your Mission
Define and instrument core growth metrics (activation rate, day-7/day-30 retention, referral coefficient, LTV) with event tracking in place
Diagnose top 3 funnel drop-offs in onboarding and propose 2 high-impact experiments to reduce friction and accelerate time-to-value
Ship and measure first 3 growth experiments (onboarding variant, referral mechanic, or engagement nudge) with clear win/lose criteria
Build cross-functional rhythm: establish weekly sync with product, design, and engineering; align on hypothesis-driven experimentation process
Improve activation rate by 15-25% through onboarding optimization and aha-moment sequencing; demonstrate measurable impact on cohort LTV
Launch and validate referral/viral loop; measure invite rate, viral coefficient, and organic growth contribution to new user acquisition
Increase day-30 retention by 10-15% through targeted lifecycle triggers, re-engagement campaigns, and habit-forming product features
Design and test 2-3 monetization experiments (pricing tiers, premium features, upsell mechanics); validate revenue per user uplift
KPIs You'll Own
Activation Rate
% of new users reaching key 'aha' moment (first buy, wallet setup, etc.) within day-1 or day-7
Day-7 & Day-30 Retention
% of cohort returning on day-7 and day-30; primary driver of LTV and sustainable growth
Referral Coefficient
New users generated per existing user; direct measure of viral loop health and organic growth efficiency
Revenue Per User (RPU)
Average lifetime value driven by monetization features; success metric for pricing and upsell experiments
Experiment Velocity
Number of high-quality experiments shipped and measured per month; cadence of learning and iteration
Tools & Stack
Your Team
Your Manager
Not specified; likely Head of Growth or VP Product
Current Team
Squad-based structure with dedicated designers and engineers; flat org
New role—building out growth team
The Package
Salary
€65K-€85K
Equity
Likely included (YC-backed); negotiate separately
Remote
On-site (Paris, Île-de-France)
Benefits & Perks
Company Intelligence
Bitstack (founded 2021) is a YC-backed crypto-native bank democratizing Bitcoin and financial access in Europe. Starting as a spare-change Bitcoin app, it's evolved into a full banking platform with 300K+ users focused on saving, spending, and growing money in an open, inclusive financial system.
Founded
2021
Funding
YC + Series A (13books Capital, Stillmark, Serena backing)
Customers
300K+ users in France/EU
Culture
Small, ambitious operator team; fast-moving, detail-oriented, product-driven; emphasis on building things users love
Is This Role For You?
- You've shipped growth experiments at a B2C startup and can tie them to concrete, measurable wins in activation, retention, or revenue
- You think in funnels, cohorts, and retention curves—and you're comfortable pulling raw data to validate hypotheses
- You thrive in flat, fast-paced environments where you collaborate directly with engineers and designers to move at speed
- You're genuinely interested in fintech, crypto, or financial inclusion as a mission—not just the growth mechanics
- You love squashing ambiguity: you can go from messy user behavior to a clear hypothesis and testable experiment
- You're expecting a traditional marketing or GTM role—this is product-side growth with heavy emphasis on building, not campaigns
- You need remote flexibility or don't want to be in Paris 5 days/week (hard on-site requirement)
- You struggle with SQL, analytics tools (Amplitude/Metabase), or interpreting raw data—this role is deeply analytical
Interview Process
Intro Call
Chat with recruiter or hiring manager about your growth background, metric improvements you've driven, and why Bitstack interests you
Growth Case Study
Walk through a real experiment you shipped—hypothesis, design, results, and learnings. Be specific on metrics and iteration
Analytical Screen
Data challenge: analyze a sample dataset, form hypotheses, and propose next experiments. Tests SQL comfort and funnel thinking
Team Interviews
Meet Head of Growth (or equivalent), a designer, and an engineer. Assess collaboration style and product judgment
Final Discussion
Conversation with founder or CEO on mission fit, growth vision for Bitstack, and your long-term goals
Interested in this role?
Apply now and hear back within days, not weeks.
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About Growth Marketing Roles
Growth marketers drive user acquisition, activation, and retention through data-driven experimentation. They sit at the intersection of product, data, and marketing — running A/B tests, building funnels, and scaling what works.