Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Architect and scale backend systems for a global sustainable fashion marketplace.
- Company: Join a16z-backed Series B startup revolutionising wholesale fashion.
- Benefits: Competitive salary, equity options, and a chance to work with top-tier engineers.
- Other info: Dynamic environment with opportunities for mentorship and career growth.
- Why this job: Be part of a high-impact team shaping the future of sustainable commerce.
- Qualifications: Experience in building complex backend systems and a passion for product-focused engineering.
The predicted salary is between 140000 - 160000 £ per year.
Company Description: a16z and YC-backed Series B marketplace reinventing wholesale sustainable fashion.
Job Description: Join a high-growth marketplace moving millions of items across 70 countries. As a Staff Engineer in the Growth squad, you will architect business-critical systems for payments, checkout, and global order management. You'll solve complex logistics and technical challenges at scale, building the backend foundation for a global circular fashion economy.
Location: London, UK
Why this role is remarkable:
- Rare opportunity to join an a16z-backed Series B scaleup operating at the intersection of AI-powered logistics and sustainable global commerce.
- High-impact technical ownership: architect systems handling 500K+ unique items monthly, utilising AI-driven grading and inventory systems spanning three continents.
- Direct collaboration with an elite engineering culture led by a CTO from Google and Postmates, emphasising architectural depth and product-focused engineering.
What You Will Do:
- Lead the architectural direction for the Growth squad, owning the end-to-end ecommerce journey from discovery through to complex global checkout flows.
- Design and scale robust backend systems for payments, credit facilities, and seller tools capable of handling millions of unique inventory items.
- Act as a technical force multiplier, leveraging AI to optimise supply chain tooling and mentoring senior engineers in a high-performance environment.
The ideal candidate:
- Extensive experience as a Staff or Lead Engineer at tier-1 consumer scaleups like Monzo, Deliveroo, Depop, or similar high-growth B2C environments.
- Proven track record of building and scaling complex backend systems including payments, checkout, or high-throughput data pipelines using Node.js/TypeScript.
- Product-obsessed mindset with the ability to articulate complex architectural trade-offs and connect deep engineering decisions to tangible business outcomes.
Staff Backend Engineer (£140k-160k+ + Equity) at a16z-backed Series B marketplace employer: Jack & Jill
Contact Detail:
Jack & Jill Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Staff Backend Engineer (£140k-160k+ + Equity) at a16z-backed Series B marketplace
✨Tip Number 1
Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. We all know that sometimes it’s not just what you know, but who you know that can get you in the door.
✨Tip Number 2
Prepare for those technical interviews! Brush up on your coding skills and be ready to discuss your past projects in detail. We want to see how you think and solve problems, so practice articulating your thought process.
✨Tip Number 3
Show off your passion for sustainable fashion and tech! When you get the chance to chat with potential employers, let them know why this role excites you. We love candidates who are genuinely interested in what we do.
✨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. We’re excited to see what you bring to the table!
We think you need these skills to ace Staff Backend Engineer (£140k-160k+ + Equity) at a16z-backed Series B marketplace
Some tips for your application 🫡
Show Your Passion for Sustainable Fashion: When writing your application, let us know why you're excited about the intersection of technology and sustainable fashion. Share any relevant experiences or projects that highlight your commitment to this cause.
Highlight Your Technical Expertise: Make sure to showcase your experience with backend systems, especially in payments and checkout flows. Use specific examples from your past roles to demonstrate how you've tackled complex challenges and contributed to high-growth environments.
Tailor Your Application: Don’t just send a generic application! Tailor your CV and cover letter to reflect the skills and experiences that align with our job description. We want to see how you can specifically contribute to our Growth squad.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures it gets into the right hands quickly. Plus, it shows you’re serious about joining our team!
How to prepare for a job interview at Jack & Jill
✨Know Your Tech Inside Out
Make sure you’re well-versed in the technologies mentioned in the job description, especially Node.js and TypeScript. Brush up on your experience with backend systems, payments, and checkout flows, as these will likely be key discussion points during the interview.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in previous roles, particularly those related to scaling complex systems. Use the STAR method (Situation, Task, Action, Result) to structure your answers and highlight how your solutions had a tangible impact.
✨Understand the Company’s Mission
Familiarise yourself with the company’s focus on sustainable fashion and AI-driven logistics. Be ready to articulate how your skills and experiences align with their mission and how you can contribute to their growth in the circular economy.
✨Ask Insightful Questions
Prepare thoughtful questions that demonstrate your interest in the role and the company. Inquire about their engineering culture, the challenges they face in scaling their systems, or how they leverage AI in their operations. This shows you’re not just interested in the job, but also in being part of their journey.