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For Companies At a Glance
- Tasks: Own and optimise the entire marketing layer to drive revenue growth.
- Company: Fast-scaling applied AI company with a focus on eliminating admin overhead.
- Benefits: Competitive salary, flexible work environment, and opportunities for rapid career advancement.
- Other info: Join a team where your ideas shape the future of growth strategies.
- Why this job: Lead impactful experiments and directly influence company growth in a dynamic setting.
- Qualifications: Experience in conversion rate optimisation and a strong analytical mindset.
The predicted salary is between 60000 - 80000 £ per year.
This role is for growth engineers who want to own the thing that actually drives revenue. If you've taken a conversion funnel from 'this probably works' to 'we know exactly why this converts, and we've tested everything', and you want to do that again at a company that's already scaling fast — this is that role. You'll be owning the full marketing layer: landing pages, programmatic SEO, signup flows, lead magnets, and the experimentation infrastructure that ties it all together. You run your own roadmap.
The Company
An applied AI company, not SaaS with AI bolted on. They've built a product that eliminates admin overhead for professionals. Since launching they've sprinted through Series A and Series B raised in under 18 months. Backed by some of the most respected names in the VC landscape and they're on track for >£150M in ARR this year.
Why This Role Is Different
Most growth engineering roles sit downstream of product decisions. This one doesn't. Growth Engineers here own their domain end-to-end, from hypothesis to experiment to rollout. There are no PMs in the chain. You decide what to test, build it, ship it, and interpret the results. The company is past the 'does this product work?' stage. The question now is: how fast can we scale acquisition, and how efficiently can we convert? That's your problem to own.
What You'll Own
- Conversion Rate Optimisation
- Drive the CRO programme across the full user journey, from paid traffic through to activation and seat expansion
- Design, build, and run multivariate experiments with statistical rigour
- Contribute to experimentation infrastructure: testing frameworks, feature flags, result interpretation, rollout decisions
- Marketing Engineering
- Build ICP-targeted landing pages for target customers
- Own programmatic SEO infrastructure and lead magnet micro-apps as conversion channels
- Collaborate with Marketing to align product-side CRO with paid and organic funnels
- Data & Growth Strategy
- Work with product analytics, revenue data, session recordings, and customer interviews to identify highest-leverage opportunities
- Identify sign-up quality signals that predict long-term retention and feed them back into acquisition targeting
- Contribute to broader growth loop strategy: virality mechanics, referrals, seat expansion, upgrade flows
The Stack
- TypeScript, React
- Serverless functions, React Query
- Feature flagging tools (GrowthBook, Statsig, PostHog or similar)
- Product analytics and event tracking pipelines
Who Thrives Here
You've shipped experiments that moved the needle and you can point to the numbers. You know the difference between statistical significance and practical significance. You understand why certain copy, layouts, and sequences drive action, and you build around that instinct.
Lead Growth Engineer - TWE 44968 in London employer: twentyAI
Contact Detail:
twentyAI Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Lead Growth Engineer - TWE 44968 in London
✨Tip Number 1
Get your hands dirty with the company’s product before the interview. Understand how it works and think about how you can improve the conversion funnel. This will not only help you in the interview but also show that you're genuinely interested in what they do.
✨Tip Number 2
Prepare to discuss specific experiments you've run in the past. Be ready to share the metrics that mattered and how you interpreted the results. This is your chance to showcase your growth engineering skills and how you can drive revenue.
✨Tip Number 3
Network with current employees or alumni from the company. They can provide insights into the company culture and what the hiring team values. Plus, a referral can give you a leg up in the application process!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive about their job search.
We think you need these skills to ace Lead Growth Engineer - TWE 44968 in London
Some tips for your application 🫡
Show Your Impact: When you're writing your application, make sure to highlight specific examples of experiments you've run that had a measurable impact. We want to see the numbers that moved the needle for you!
Tailor Your Application: Don’t just send a generic application. Take the time to tailor your CV and cover letter to reflect how your experience aligns with our growth engineering role. We love seeing candidates who understand what we do!
Be Clear and Concise: Keep your application clear and to the point. We appreciate straightforward communication, so avoid fluff and get straight to the good stuff about your skills and experiences.
Apply Through Our Website: Make sure to apply through our website! It’s the best way for us to keep track of your application and ensure it gets the attention it deserves. Plus, it shows you’re serious about joining our team!
How to prepare for a job interview at twentyAI
✨Know Your Numbers
Before the interview, brush up on your past experiments and be ready to discuss specific metrics that demonstrate your impact. Be prepared to explain how you moved the needle in previous roles, as this will show your understanding of conversion rate optimisation.
✨Master the Tech Stack
Familiarise yourself with TypeScript, React, and any feature flagging tools mentioned in the job description. If you’ve used similar technologies, be ready to share examples of how you’ve applied them in your work, especially in building landing pages or running experiments.
✨Demonstrate Your Experimentation Mindset
Prepare to discuss your approach to designing and running multivariate experiments. Think about how you ensure statistical rigour and how you interpret results. This role is all about owning the experimentation process, so showcasing your methodology will be key.
✨Align with Company Goals
Research the company’s growth strategy and be ready to discuss how your skills can contribute to their goals. Show that you understand the importance of scaling acquisition and conversion efficiency, and come with ideas on how you could help achieve these objectives.