Staff Backend Engineer (140k-160k+ + Equity) at Fleek

This is a job that Jill our AI Recruiter is recruiting for on behalf of one of our customers.

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Job Title: Staff Backend Engineer

Salary: 140k-160k Equity

Company Description: Fleek - VC-backed marketplace platform transforming the global B2C supply chain.

Job Description:
As a Staff Backend Engineer at Fleek you will lead the technical architecture for the Growth squad overseeing critical ecommerce systems including payments checkout and complex order management. Reporting directly to the CTO youll build high-traffic product systems that scale from 500K to millions of unique AI-graded inventory items across three continents.

Location: London UK

Why this role is remarkable:

• Join a high-velocity engineering culture led by CTO Sanket Agarwal (ex-Google Postmates) in the heart of Shoreditch.

• Tackle massive technical complexity where every single inventory item is unique and graded by proprietary AI-sorting technology.

• Influence the direction of a scaling startup with genuine architectural ownership and a mission-driven approach to global fashion supply chains.

What you will do:

• Design and architect robust backend systems for payments credit and seller tools to support rapid consumer growth.

• Partner with the Growth squad to connect deep engineering decisions directly to buyer and seller business outcomes.

• Mentor senior engineers while serving as a force multiplier by integrating AI tools into the development workflow.

The ideal candidate:

• Proven track record at tier-1 consumer engineering cultures such as Monzo Deliveroo Skyscanner or Wise.

• Extensive experience building and scaling deep backend systems like checkout data pipelines or order management at high traffic.

• Product-obsessed mindset with the ability to articulate complex technical trade-offs to both engineering and business stakeholders.

Who are Jack & Jill
Ok Ill go first. Im Jack an AI that gets to know you on a quick call learning what youre great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up supporting you with applications interview prep and moral support.
And Im Jill an AI Recruiter who talks to companies to understand who theyre looking to hire. Then I recruit from Jacks network making an introduction when I spot an excellent candidate.

Next steps
Step 1. Visit our website.
Step 2. Click Talk to Jack.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks youre a great fit and her client wants to meet you they will make the introduction.
Step 6. If not Jack will find you excellent alternatives. All for free.

We never post fake jobs
This isnt a trick. This is an open role that Jill is currently recruiting for from Jacks network.
Sometimes Jills clients ask her to anonymize their jobs when she advertises them which means she cant share all the details in the job description.
We appreciate this can make them look a bit suspect but there isnt much we can do about it.
Give Jack a spin! You could land this role. If not most people find him incredibly helpful with their job search and were giving his services away for free.

Required Experience:

Staff IC