Senior Front End Engineer

New Yesterday

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.
Apply
Location:
City Of London, Greater London, London; England, United Kingdom
Job Type:
FullTime

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