Senior Full Stack Engineer (£65,000 – £95,000) at Award-winning circular co at Jack & Jill/External ATS

London, England, United Kingdom -

Full Time

Start Date

Immediate

Expiry Date

17 May, 26

Salary

95000.0

Posted On

16 Feb, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

React, Node.js, JavaScript, E-commerce Integrations, Shopify, Agile, Code Reviews, Architectural Decisions, AI/ML Features

Industry

Staffing and Recruiting

Description

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. Senior Full Stack Engineer Salary: £65,000 – £95,000 Company Description: Award-winning circular commerce startup Job Description: Join a high-growth retail tech startup building the infrastructure for circular commerce. As a Senior Full Stack Engineer, you will design and scale e-commerce integrations using React and Node.js. You will take complete ownership of technical decisions, ship high-quality code to production, and help fashion brands turn sustainability into a profitable business model. Location: London, UK / Remote Why this role is remarkable: Work on an award-winning platform actively redefining sustainability in fashion and sports retail. Join a well-funded startup backed by top-tier VCs and government innovation grants during a high-growth phase. Enjoy significant technical autonomy to shape the engineering roadmap and implement AI/ML-driven features at scale. What you will do: Design and maintain scalable full-stack applications using React, Node.js, and modern JavaScript frameworks. Build and optimize complex integrations with major e-commerce ecosystems like Shopify to power circular retail. Mentor junior engineers through code reviews and lead the implementation of Agile best practices and tooling. The ideal candidate: 7+ years of professional software engineering experience with a strong bias toward action in startup environments. Deep technical expertise in React and Node.js, specifically within the e-commerce or retail tech sector. Clear communication skills and the ability to make pragmatic architectural decisions with incomplete information. Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're 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 I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's 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 you're 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 isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't 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 we're giving his services away for free.

Responsibilities

The Senior Full Stack Engineer will design and maintain scalable full-stack applications using React and Node.js, focusing on building and optimizing complex integrations with major e-commerce ecosystems like Shopify. Responsibilities also include taking complete ownership of technical decisions, shipping high-quality code, and mentoring junior engineers.