Senior Frontend Developer at Fast-growing AI startup

Overview

Senior Frontend Developer

Company Description: Fast-growing AI startup

Job Description: As a Senior Frontend Developer, you will lead the creation of intuitive, high-performance user interfaces for our innovative AI platform. You will bridge the gap between complex backend intelligence and seamless user experiences, playing a critical role in product strategy while mentoring junior engineers in a fast-paced, collaborative environment.

Location: London, UK

Why this role is remarkable

• Work at the forefront of AI innovation, building tools that redefine how users interact with complex data.
• Join a well-funded team backed by top-tier VCs with significant runway and market traction.
• High-impact role with the autonomy to shape frontend architecture and influence the product roadmap from day one.

What you will do

• Architect and maintain scalable, responsive frontend components using modern JavaScript frameworks.
• Collaborate with product and design teams to translate complex AI workflows into elegant user interfaces.
• Optimize application performance and ensure high-quality code through rigorous testing and peer reviews.

The ideal candidate

• Minimum of 8 years of professional software development experience with a focus on frontend technologies.
• Proven track record of success within at least one high-growth startup environment.
• Based in London with the ability to commute to central hubs like Old Street or Liverpool Street.

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.