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Senior Software Engineer at AI-native fintech platform

Job in Greater London, London, Greater London, EC1A, England, UK
Listing for: Jack and Jill AI
Full Time position
Listed on 2026-01-13
Job specializations:
  • Software Development
    AI Engineer, Full Stack Developer, Software Engineer
Job Description & How to Apply Below
Location: Greater London

Full Stack Software Engineer

Company

Description:

Well-funded healthtech SaaS

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: London, UK

Why this role is remarkable:
  • Work at the intersection of AI and behavioral science to solve the global crisis of chronic stress and burnout
  • Join a well-funded startup backed by top-tier VCs where you can influence the product roadmap from the ground up
  • High-impact IC role with the autonomy to design sustainable, long-term technical architectures while shipping value early and often
What you will do:
  • Design and develop comprehensive end-to-end solutions using React, Python, and Django across web and mobile platforms
  • Collaborate with product managers and designers to define technical requirements and utilize AI tools for rapid prototyping
  • Monitor and maintain the smooth operation of production features while contributing to the enhancement of team engineering practices
The ideal candidate:
  • Senior-level engineer with 5+ years of experience building consumer-facing applications using React and Python or Type Script
  • Proven ability to take ownership of complex problems and deliver maintainable, high-performance software solutions within a collaborative environment
  • Strong interest in wellbeing technology and experience with mobile development, specifically React Native and system architecture
Next steps
  • Visit our website
  • Click 'Talk to Jack'
  • Talk to Jack so he can understand your experience and ambitions
  • Jack will make sure Jill (the AI agent working for the company) considers you for this role
  • If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction
  • If not, Jack will find you excellent alternatives. All for free
  • #J-18808-Ljbffr
    Position Requirements
    10+ Years work experience
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