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Jack & Jill

Jack & Jill

Member of Technical Staff (+ Equity) at VC-backed cross-border payments infrastructure

London On-site 5-10 yrs exp Technology, Information and Internet 95 employees
TypeScriptReactNodeFull-stack DevelopmentSystem Architecture

Requirements

Requires a strong background in building production-grade fintech products like payment engines or financial ledgers. Candidates must have senior-level proficiency in TypeScript, React, and Node.

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

Member of Technical Staff

Salary

Not Disclosed + Equity

Company Description

VC-backed cross-border payments infrastructure

Job Description

Lead the zero-to-one development of a comprehensive financial platform designed for international commerce in emerging markets. You will architect foundational systems including ledger infrastructure, custody layers, and settlement workflows. This high-impact role involves building mission-critical tools that bridge traditional finance with modern digital assets to enable instant global value movement.

Location

London, UK

Why this role is remarkable

  • Architect a greenfield financial platform from the ground up, working directly with veteran founders in a high-ownership environment.
  • Join a well-funded team backed by top-tier fintech investors with established traction in high-growth global payment corridors.
  • Benefit from a culture of rapid development and high technical standards, including visa sponsorship and potential international relocation opportunities.

What You Will Do

  • Design and implement full-stack features including secure wallet systems, virtual accounts, and automated settlement workflows.
  • Integrate modern digital asset infrastructure with traditional banking rails to facilitate low-latency, cross-border financial transactions.
  • Collaborate on foundational architectural decisions to ensure system scalability and reliability for high-volume institutional money movement.

The ideal candidate

  • Strong background in building production-grade fintech products such as payment engines, custody systems, or financial ledgers.
  • Senior-level proficiency in TypeScript, React, and Node, with the ability to ship functional, user-facing interfaces quickly.
  • Product-focused mindset capable of architecting complex systems while accounting for the unique constraints of emerging market infrastructure.

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.

How does this work?

  • Jack's an AI agent for job searching and career coaching. He works for you.
  • Jill is the AI recruiter working for the company. She recruits from Jack's network.
  • If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.

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.

Skills

TypeScriptReactNodeFull-stack DevelopmentSystem ArchitectureFintech Product DevelopmentLedger InfrastructureCustody SystemsSettlement WorkflowsDigital Asset Infrastructure

About Jack & Jill

Meet Jack and Jill. Two AI agents that introduce remarkable people to remarkable companies. Jack is an AI agent that finds your next job and helps you land it. Already helping over 230,000 people take the next step in their career. Jill is an AI agent for recruiting. Already helping thousands of companies make their next great hire. Here's where it gets interesting. Jack and Jill work together. Jack knows what professionals are looking for, long before they're ready to move. Jill knows what thousands of companies need, far beyond what's written in the job description. When both sides match, they introduce the candidate and the decision maker directly. No cold outreach. No black hole. Just warm introductions that work.