Growth Marketing Lead

Ostium is on a simple mission: make it possible for anyone with a digital wallet to trade stocks, commodities, currencies, and crypto with full transparency. No brokers, no freezes, no hidden spreads. We’re replacing the opaque, offshore brokerage model with a transparent, permissionless trading stack built onchain. Every trade, deposit, and withdrawal is verifiable through open, auditable code. We’ve raised $27.9M+ from General Catalyst, Jump, LocalGlobe, Susquehanna (SIG), GSR, Alliance DAO, Soma Capital, Balaji Srinivasan, Meltem Demirors, and others.

About the role

As a Growth Marketing Lead, you'll own user acquisition end-to-end and unlock new channels. You'll be the person who strategizes where our next 10k traders come from — and execute the experiments to prove it.

This is a zero-to-one role. You'll start as a hands-on operator running campaigns and growth experiments alongside our Head of Marketing, creative, social, and BD team. As channels and tactics are validated, you'll contribute to building out the team that scales.

What you'll own

• Net new user acquisition. You're accountable for the top of the funnel: traffic, signups, funded accounts, and first trades.

• Channel discovery and arbitrage. Identify, test, and scale acquisition channels we aren't running today — SEO, lifecycle/email, paid social, TikTok, YouTube creators and finance influencers, Reddit, Telegram communities, podcast sponsorships, referral and affiliate programs, retargeting, regional channels in LATAM/SEA/MENA, and whatever asymmetric tactic you spot before anyone else does.

• Influencer and creator strategy. Build a CFD/trader-focused creator program — sourcing, negotiating, briefing, measuring. Find the YouTube, TikTok, and IG creators whose audiences look like our next cohort.

• SEO and content. Stand up the SEO motion from scratch: keyword strategy, programmatic pages, comparison and "vs" content, education hubs, and link-building. Partner with content writers and engineers to ship.

• Lifecycle and email. Own the email/push/in-app journey from waitlist to first deposit to retention — segmentation, triggers, win-back, deposit flows.

• Paid acquisition. Stand up paid channels where regulation and CAC allow — programmatic, paid social, search, native — and kill what doesn't work fast.

• Funnel and analytics. Define the metrics, build the dashboards, and run a relentless experimentation cadence: CAC by channel, funded conversion rate, LTV, payback period.

Who you are

• 2+ years in growth/performance marketing, ideally in crypto, consumer fintech, or a trading platform.

• Zero-to-one operator. You've built a growth function from nothing — picked the channels, set up the tools, run the experiments, and have the receipts to prove the numbers moved.

• High agency, full ownership. You don't wait for direction or the perfect brief. You identify opportunities and get excited running the experiments yourself.

• Quantitative and analytical. Comfortable in GA4/Amplitude/Mixpanel and attribution tools.

• Writes well. Ad copy, landing pages, creator briefs, email — you can produce it without waiting on a copywriter.

• Operator and executor. Can execute yourself and grow a team over time.

• Crypto-native or a trader. You either trade on traditional brokerages and platforms, or understand crypto-native culture and are excited to get hands-on in the perp DEX and onchain trading landscape.

Bonus points

• Prior experience growing a product in regulated or semi-regulated environments where paid channels are constrained (iGaming, crypto, CFDs).

• Affiliate and IB (introducing broker) program experience.

• Have run successful neodistribution tactics such as clipping, TikTok, or YouTube creator programs at scale.

• Hands-on with attribution and AI tooling for marketing and growth.

• You are an active trader yourself.

• Dream profile: you've grown a CFD, brokerage, or retail trading platform (e.g. IBKR, eToro, Plus500, Robinhood, Revolut, Webull, Trading212, XTB, IG, Capital.com, Public, OANDA, Pepperstone). You know how traders are acquired and what makes them deposit.

Commitment to Equal Opportunity
Ostium is committed to creating a culture of inclusion and belonging, and we are proud to be an equal opportunity employer. We believe it is our collective responsibility to uphold these values and encourage candidates from all backgrounds to join us in our mission. All qualified applicants will be treated with respect and receive equal consideration for employment without regard to race, color, creed, religion, sex, gender identity, sexual orientation, national origin, disability, uniform service, veteran status, age, or any other protected characteristic per federal, state, or local law. If you are passionate about what you do and want to use your talents to support our mission and values, we’d love to hear from you.