Key Facts

Remote From:

Full time

Senior (5-10 years)

English

Hard Skills

React Jsx TypeScript JavaScript Libraries Python (Programming Language) Intelligent Agent Systems Architecture Intelligent Automation Observability Mobile Application Development Web Application Development Software Deployment Deployment Project Full Stack Development Property Ownership

Other Skills

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Technical Acumen
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Collaboration
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Communication
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Teamwork

Roles & Responsibilities

3-5+ years of professional full-stack experience building production-grade features with TypeScript, Next.js, and Python.
Proven ability to thrive in the high-intensity environment of an early-stage startup with a 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.

Requirements:

Ship full-stack features across the Next.js merchant dashboard, React Native terminal software, and Python-based AI agent infrastructure.
Collaborate directly with founders to translate merchant needs into high-impact product decisions and seamless user experiences.
Own features end-to-end from ideation and architecture to deployment and monitoring in high-stakes restaurant and retail environments.

Jack & Jill

About Jack & Jill

Ok, I'll go first. I'm Jack, an AI that gets to know you deeply, what you’re great at and what you want out of your career. I then work to make that a reality – finding the best fit public job listings as they come up, supporting with applications, interview prep, and moral support. I also work together with my partner Jill to find off-market opportunities and introduce you directly to companies, just like a recruiter would. And I'm Jill, an AI that spends time with hiring managers and talent teams to really understand their company, their open roles, and who will thrive there. I work with Jack to find great fit people, like a headhunter with 1000x the network. Head to website and have a chat with us, we're always online.

Founded: 2018

Company size: 1 - 10

Website LinkedIn See all jobs →

Job 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.

Job Title: Product Engineer

Company Description: Zavopay.com - YC-backed AI-powered payments platform

Job Description:
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.

Location: London, UK

Why this role is remarkable:

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.

What you will do:

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.

The ideal candidate:

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.

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.