🚀 Senior Frontend Engineer – Next.js / React
Location: Monument WeWork in London
Type: Full-Time
About Admanage.ai
We’re building the Cursor for ad management.
Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every business access to enterprise-grade ad automation tools.
We make it easy to launch hundreds of ads in seconds, saving advertisers hours. And we’re building AI-powered tools to programmatically create, launch, and manage ads, which is where you come in.
We’re profitable, fast-moving, and backed by experience, not just ideas. We commit to GitHub multiple times a day and ship continuously.
Why This Role Rocks
This is a senior-level frontend role where you’ll design and deliver features that directly impact how the top advertisers launch and manage hundreds of thousands of ads per month. You’ll collaborate with the founding team (ex-Photoroom, ex-ZOE, ex-Nextdoor), shape our frontend architecture, and raise the bar for state management, testing, and performance.
You’re not here to maintain, you’re here to build a complex UI that’s robust and well-tested.
🔧 Tech Stack
Frontend: Next.js 14, React 18, TailwindCSS, Radix UI, Framer Motion
State Management: Zustand
Testing: Vitest
Backend (light exposure): Node.js, Prisma, MySQL
Infra: R2 Cloudfalre, AWS S3, Vercel
Auth: NextAuth.js
APIs: Facebook Marketing API, TikTok Ads API
What You’ll Do
Architect and scale the frontend for an app launching 500,000+ ads/month
Implement robust state management to handle complex, async, and data-heavy workflows
Build production-grade testing frameworks (unit, integration, E2E) to support safe continuous deployment
Ship features end-to-end: idea → build → optimize for robust testing, speed and UX
You Might Be a Fit If You…
Have 5+ years building production React/Next.js apps
Are skilled at state management in large, complex apps
Believe testing is part of building, not an afterthought
Care about performance, UX, and clean design systems
Communicate clearly, move fast, and thrive in a startup culture
💡 Bonus Points For
Experience with ad APIs (Meta, TikTok, IG)
Prisma + MySQL experience
CI/CD pipeline knowledge (Vercel, GitHub Actions)
💰 Perks & Benefits
Thirdspace Gym membership
Competitive Salary
25 days holiday + bank holidays
WeWork Office in Monument
Team offsites (Past: Canada, South England)
Join Us If You Want To…
✅ Build alongside experienced engineers and founders
✅ Work with a modern stack and ship fast
✅ Solve hard UX and state management challenges in adtech
✅ Own what you build and shape our engineering culture
✅ Grow into a Lead role as the company scales
How to Apply
Send your GitHub, LinkedIn, and 2-3 lines on the hardest frontend problem you’ve solved lately. Bonus: links to anything you’ve built that makes you proud.
Interview Process
We start with a take home task where you’ll be asked to identify bugs in a sample github repo and indicate how you would fix it.