Growth Engineer (SEO + Lifecycle)
Run the growth loop — programmatic SEO, lifecycle email, and conversion experiments — end to end.
About Arithmos
Arithmos is building the retail layer for direct indexing. We turn a plain-English idea into a transparent, rule-based portfolio with institutional-grade backtesting and analytics. Our goal is to make structured investing accessible to millions.
The role
You will own the top-of-funnel — programmatic SEO surface (locations, comparisons, blog), lifecycle email + push, signup + paywall conversion, and the experiment infrastructure that lets us learn weekly. Half engineer, half growth lead.
What you’ll do
Programmatic SEO + GEO
- Expand /locations and /compare to thousands of well-targeted pages
- Own the schema.org + llms.txt surface for generative engines
- Run on-page + technical SEO experiments to chart-topping result
Lifecycle + activation
- Email/push/in-app drip — verify-email, first-build, rebalance day
- Onboarding A/B tests on the help-me modal + roll-the-dice flow
- Win-back loops for lapsed Plus subscribers
Conversion + paywall
- Pricing-page experiments and Stripe checkout copy
- Tier-gating UX (locked-range banner, upgrade prompts)
Requirements
- 4+ years owning growth at a SaaS or consumer fintech product
- Strong technical chops — comfortable shipping React/Next.js code yourself
- Built programmatic-SEO sites that ranked
- Numbers-led: comfortable in PostHog / Mixpanel / SQL
Nice to have
- Background in fintech / investing / brokerage
- Worked with Resend, Postiz, or other lifecycle tooling
- Public following or distribution channel
Why this role is exceptional
- Direct attribution from your work to revenue (revenue-tied bonus)
- Greenfield programmatic surface (locations + compare just shipping)
- Founders who view growth as a first-class engineering discipline
Compensation & benefits
- Private healthcare
- 25 days holiday + bank holidays
- Top-tier equipment
- Flexible working
- Annual company offsite
How to apply
Upload your CV and a short note — no more than 200 words — on why this role in particular. If you have work you’re proud of that’s relevant (a product you shipped, a research paper, a backtest you ran), link to it. Two-stage process: screening call, then a take-home + technical deep-dive with the team you’d join.
