Frontend Design Engineer (Next.js / React)

About Admanage.ai

We're building the Cursor for ad management.

Admanage.ai helps companies launch ads 10x faster across Meta, TikTok, Google, Snapchat, Pinterest, Reddit and more. Created by top performance marketers who've managed over $50M+ in ad spend, our mission is to level the playing field by giving every business access to enterprise-grade ad automation tools.

We make it possible to launch hundreds of ads in seconds. What takes a media buyer 60 minutes in Ads Manager takes us under a minute, a 96% cut in launch time. In the last 90 days alone, our users launched 1.5M+ ads across 194,000+ batches, and we serve ~10,000 marketers daily at brands like Canva, Stanley, Wise, NordVPN and Perplexity.

Now 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. We were founded by brothers Cedric & Raph Yarish (ex-Photoroom, ex-ZOE, ex-Nextdoor), who previously co-founded AdScan.ai (25,000 users).

Why This Role Rocks

This is a high-ownership frontend role where you'll design and deliver features that directly shape how top advertisers launch and manage hundreds of thousands of ads a month. You'll work with tables that render thousands of live ads, real-time data sync from Meta, and complex async workflows spanning a dozen ad platforms.

You'll collaborate directly with the founding team, 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, data-heavy UI that's fast, robust, well-tested, and genuinely nice to use.

🔧 Tech Stack

• Frontend: Next.js 14, React 18, TailwindCSS, Radix UI, Framer Motion
• Design / AI tooling: Claude Code, Claude Design
• State management: Zustand
• Testing: Vitest
• Backend (light exposure): Node.js, Prisma, MySQL
• Infra: Cloudflare R2, AWS S3, Vercel
• Auth: NextAuth.js
• APIs: Facebook Marketing API, TikTok Ads API (plus Google, Snapchat, Pinterest, Reddit and more)

What You'll Do

• Architect and scale the frontend for an app launching well over a million ads a quarter.
• Implement robust state management to handle complex, async, and data-heavy workflows.
• Build production-grade testing (unit, integration, E2E) to support safe continuous deployment.
• Generate UI fast with Claude Design and Claude Code, then refine it into pixel-accurate, accessible, reusable production components.
• Ship features end to end: idea → build → optimise for testing, speed and UX.

You Might Be a Fit If You...

• Have a genuine eye for design: you care about spacing, hierarchy, motion, and clean, consistent UI.
• Have 1-4 years building production React/Next.js apps.
• Are strong at state management in large, complex apps.
• Believe testing is part of building, not an afterthought.
• Care about performance, UX, and design systems.
• Communicate clearly, move fast, and thrive in startup culture.

💡 Bonus Points For

• Experience with ad APIs (Meta, TikTok, IG).
• Prisma + MySQL experience.
• CI/CD pipeline knowledge (Vercel, GitHub Actions).
• A strong design sensibility and fluency with AI build tools like Claude Code and Claude Design.

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 identify bugs in a sample GitHub repo and explain how you'd fix them.