Full-Stack Growth Builder at $50M Series B a16z and YC-backed B2B fashion marketplace

Full-Stack Growth Builder at $50M Series B a16z and YC-backed B2B fashion marketplace

Full-Time 60000 - 80000 € / year (est.) No home office possible
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At a Glance

  • Tasks: Reinvent customer lifecycle marketing using AI and build smart CRM systems.
  • Company: Join a fast-growing B2B fashion marketplace backed by top investors.
  • Benefits: Be part of a dynamic team with high ownership and growth opportunities.
  • Other info: Work directly with experienced leaders in a low-ego environment.
  • Why this job: Make a real impact on retention and global supply chain efficiency.
  • Qualifications: Proficient in SQL and AI tools, with strong analytical skills.

The predicted salary is between 60000 - 80000 € per year.

As a super-IC on a high-velocity growth team, you will reinvent customer lifecycle marketing using AI as your default toolkit. You'll architect adaptive CRM systems, build reseller engagement tools, and design rigorous experimentation frameworks. This is a technical building role focused on driving measurable, causal impact on retention and global supply chain efficiency.

Why this role is remarkable:

  • Join a talent-dense team backed by top-tier investors like a16z, Y Combinator, and the founders of Depop and Shopify during a period of triple-digit year-on-year growth.
  • Move beyond static marketing journeys to architect AI-native systems that dynamically optimize messaging, timing, and channel prioritization using real-time user signals.
  • Report directly to a VP of Growth with a massive scaling track record at Deliveroo, operating in a low-ego environment where velocity and high ownership are the core values.

What You Will Do:

  • Design and maintain smart CRM systems and automated content generation workflows using AI (Claude/Cursor) to deliver hyper-personalized user experiences.
  • Build end-to-end tooling for resellers, such as cross-listing features, to drive long-term platform stickiness and bridge the gap between B2B and consumer markets.
  • Implement rigorous experimentation frameworks, utilizing causal inference and holdouts to quantify the true incremental revenue impact of lifecycle initiatives.

Ideal Candidate:

  • A technical "builder" profile proficient in SQL and AI-coding tools, capable of shipping production-quality systems and navigating large, messy datasets without engineering support.
  • Deeply analytical with a strong grasp of experimentation ethics, including lift testing and fatigue management, to balance short-term optimization with long-term trust.
  • Product-minded innovator who prefers building autonomous, learning systems over manually executing traditional marketing campaigns or static lifecycle journeys.

Full-Stack Growth Builder at $50M Series B a16z and YC-backed B2B fashion marketplace employer: Jack & Jill

Join a dynamic and innovative team at a rapidly growing B2B fashion marketplace in London, where you'll have the opportunity to shape the future of customer lifecycle marketing using cutting-edge AI technology. With a strong focus on employee growth and a collaborative work culture, this company offers a unique environment that values high ownership and velocity, allowing you to make a significant impact while working alongside industry leaders backed by top-tier investors. Experience the thrill of being part of a talent-dense team during a period of triple-digit growth, where your contributions will directly influence the success of the platform.

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Contact Detail:

Jack & Jill Recruiting Team

StudySmarter Expert Advice🤫

We think this is how you could land Full-Stack Growth Builder at $50M Series B a16z and YC-backed B2B fashion marketplace

Tip Number 1

Network like a pro! Reach out to people in the industry, especially those connected to the company you're eyeing. A friendly chat can open doors and give you insider info that could set you apart.

Tip Number 2

Show off your skills! Create a portfolio or a project that highlights your technical prowess, especially in AI and CRM systems. Share it during interviews or on platforms like LinkedIn to catch their attention.

Tip Number 3

Prepare for the interview by diving deep into the company's mission and values. Tailor your responses to show how your experience aligns with their goals, especially around growth and innovation.

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, it shows you’re genuinely interested in being part of the team.

We think you need these skills to ace Full-Stack Growth Builder at $50M Series B a16z and YC-backed B2B fashion marketplace

AI Integration
CRM System Design
Automated Content Generation
SQL
Data Analysis
Experimentation Frameworks
Causal Inference

Some tips for your application 🫡

Show Your Technical Skills:Make sure to highlight your technical prowess in SQL and AI-coding tools. We want to see how you've used these skills in past projects, so don’t hold back on the details!

Demonstrate Your Analytical Mindset:We love candidates who can think critically about data. Share examples of how you've implemented experimentation frameworks or tackled complex datasets. This will show us you're the analytical builder we’re looking for.

Be Product-Minded:Let us know how you’ve approached building autonomous systems rather than just executing traditional marketing campaigns. We’re keen on innovators who can think outside the box and drive real impact.

Apply Through Our Website:Don’t forget 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. We can’t wait to hear from you!

How to prepare for a job interview at Jack & Jill

Know Your Tech Inside Out

Make sure you’re well-versed in SQL and AI-coding tools. Brush up on your technical skills and be ready to discuss how you've used these tools in past projects. They’ll want to see that you can navigate large datasets and build production-quality systems without needing hand-holding.

Showcase Your Analytical Mindset

Prepare to talk about your experience with experimentation frameworks. Be ready to explain how you’ve implemented rigorous testing in previous roles, including lift testing and managing fatigue. This role is all about driving measurable impact, so demonstrate your analytical prowess!

Emphasise Your Product Mindset

This isn’t just about executing campaigns; it’s about innovating and building autonomous systems. Think of examples where you’ve designed or improved processes that led to better user experiences. Show them you’re not just a doer but a thinker who can architect solutions.

Cultural Fit is Key

They value a low-ego environment, so be genuine and approachable in your responses. Share experiences that highlight your ability to work collaboratively and take ownership. They want to see that you can thrive in a fast-paced, high-velocity team while maintaining a positive attitude.