Skip to main content

Senior Frontend Developer at Gizmo.ai

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board.

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.

Senior Frontend Developer

Salary: Not Disclosed

Company Description: Gizmo.ai - Fast-growing AI startup

Job Description:
Gizmo.ai is seeking a Senior Frontend Developer to lead the evolution of our user interfaces. You will be responsible for architecting scalable, high-performance frontend systems that power our cutting-edge AI platform. This is a critical role where your technical expertise will directly shape the product experience for thousands of users globally.

Location: London, UK

Why this role is remarkable:

  • Join a high-growth AI startup at a pivotal stage, influencing both technical direction and product strategy.
  • Work in a collaborative, fast-paced environment where innovation is prioritized and technical debt is actively managed.
  • Enjoy a prime Central London location with a high-performance culture and the autonomy to drive significant architectural decisions.

What you will do:

  • Architect and build sophisticated, responsive web applications using modern React and TypeScript workflows.
  • Collaborate closely with product and design teams to translate complex requirements into intuitive user interfaces.
  • Mentor junior developers and establish frontend engineering best practices across the organization to ensure code quality.

The ideal candidate:

  • Possesses at least 8 years of professional software development experience with a mastery of modern frontend technologies.
  • Has a proven track record of success within a fast-paced startup environment, demonstrating adaptability and ownership.
  • Is based in London with easy access to Old Street or Liverpool Street stations for regular in-person collaboration.

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.

Senior Frontend Developer at Gizmo.ai

Jack and Jill AI
London, UK
Full-Time

Published on 03/03/2026

Share this job now