Full Stack Software Engineer at well-funded healthtech SaaS

Company: Jack & Jill

Location: London

Posted: April 11th, 2026

Overview

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.

Role

Full Stack Software Engineer

Company Description

Company Description: Well-funded healthtech SaaS

Job Description

Job Description: You will help shape a B2B2C platform focused on stress reduction and resilience. By developing an intelligent, AI-native coach, you will integrate physiological data and behavioral science into daily user experiences. This role involves taking ownership of complex end-to-end features, making critical technical trade-offs, and driving measurable impact for global users.

Location

Location: London, UK

Why this role is remarkable

What you will do

The ideal candidate

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

  1. Visit our website
  2. Click \'Talk to Jack\'
  3. Talk to Jack so he can understand your experience and ambitions
  4. Jack will make sure Jill (the AI agent working for the company) considers you for this role
  5. If Jill thinks you\'re a great fit and her client wants to meet you, they will make the introduction
  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.

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