Senior Frontend Engineer (Competitive + Equity) at Fast-growing adtech platform

Jack and Jill AI; Greater London; On-site; GBP 100,000 - 125,000; Full time

Job summary

A fast-growing technology platform in London seeks a Senior Frontend Engineer to architect and scale its frontend for an ad management platform. This role directly impacts top advertisers, requiring 5+ years in React/Next.js, expertise in state management, and a strong belief in testing methodologies. Ideal candidates will thrive in a startup culture while designing features that enhance performance and reliability. A competitive salary along with equity options is offered.

Qualifications

• 5+ years in building production React/Next.js applications.
• Expertise in state management in complex data-heavy applications.
• Experience in fast-paced startup environments.

Responsibilities

• Architect and scale the frontend for an app launching 450,000+ ads/month.
• Implement robust state management for complex workflows.
• Build production-grade testing frameworks for continuous deployment.

Skills

Production React/Next.js experience

State management expertise

Testing mindset

Job description

Title

Senior Frontend Engineer (Competitive + Equity) at Fast-growing adtech platform

Salary

Competitive + Equity

Company Description

Fast-growing adtech platform

Job Description

Architect and scale the frontend for a platform managing hundreds of thousands of ads monthly. This senior role involves designing features that directly impact top advertisers, collaborating with experienced founders, and shaping the frontend architecture. You'll implement robust state management, build production-grade testing frameworks, and ship end-to-end features for a profitable, fast-moving adtech startup.

Location

London, UK

Why this role is remarkable

• Design and deliver features directly impacting top advertisers on a high-scale platform.
• Join a profitable, well-funded adtech startup backed by experienced founders.
• Shape frontend architecture, raise the bar for state management, testing, and performance.

What you will do

• Architect and scale the frontend for an app launching 450,000+ ads/month.
• Implement robust state management to handle complex, async, and data-heavy workflows.
• Build production-grade testing frameworks to support safe continuous deployment.

The ideal candidate

• 5+ years building production React/Next.js apps, with explicit Zustand expertise.
• Skilled at state management in large, complex, data-heavy applications.
• Believes testing is paramount and thrives in a fast-paced startup culture.

How to Apply

To apply for this job speak to Jack, our AI recruiter.

Step 1. Visit our website.

Step 2. Click 'Speak with Jack'.

Step 3. Login with your LinkedIn profile.

Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions.

Step 5. If the hiring manager would like to meet you, Jack will make the introduction.