Company: Jack & Jill/External ATS
Location: London
Posted: April 17th, 2026
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 speak to Jack.
Product Engineer
Zavopay.com - YC-backed AI-powered payments platform
Join Zavo as a founding-team Product Engineer to consolidate the fragmented retail and restaurant tech stack. You'll build end-to-end features using Next.js, React Native, and AI agents, directly impacting over 400 businesses. Working alongside the co-founders, you'll bridge the gap between complex fintech infrastructure and elegant, AI-driven merchant experiences.
London, UK
Founding team impact: Join a small technical team of 4 as an early hire with meaningful equity and direct influence on the product roadmap and technical architecture.
Strong YC backing: Part of the YC F25 cohort with significant runway and backing from top global investors, already serving 400+ active merchant locations.
Cutting-edge stack: Build across the entire ecosystem, from smart terminal software and Tap to Pay to sophisticated AI agents that automate complex back-office operations.
Ship full-stack features across the Next.js merchant dashboard, React Native terminal software, and Python-based AI agent infrastructure.
Collaborate directly with founders Ilkan and Can to translate merchant needs into high-impact product decisions and seamless user experiences.
Own features end-to-end, from initial ideation and architecture to deployment and monitoring in high-stakes restaurant and retail environments.
3-5+ years of professional full-stack experience building production-grade features with modern tools like TypeScript, Next.js, and Python.
Proven ability to thrive in the high-intensity environment of an early-stage startup, demonstrating a genuine founder mentality and commitment to product quality.
Strong product intuition and the technical versatility to switch between web dashboards, mobile terminal software, and AI-driven automation tasks.
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.
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.
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.