Frontend Engineer (Next.js) - AI startup

Create the next generation of AI-native interfaces.

Join a small, dedicated team of our client, operating in stealth mode. Its mission is to build the ultimate AI-driven business platform for a massive, underserved market. This is a unique opportunity to help extend and support a product with a completely new AI-first architecture.

"Our approach goes beyond typical AI tools. We are creating a system that doesn’t just offer suggestions - it performs entire, end-to-end workflows on the user’s behalf. Our core is built on a proprietary, auditable execution engine that ensures transparency and trust."

There is a working prototype. This is not just an idea - it’s a live project ready for you to help extend and support our vision.

• Frontend: Next.js 15, React 19, TypeScript, Tailwind CSS

• Backend: Next.js / Server Actions, API integrations / PostgreSQL, Vector DB

• Monorepo: pnpm, Turborepo, shared UI components

• Voice/Chat/AI: Web Audio, Media Streams, assistant integrations, Tool calling, text

Your everyday playground:

• Build and ship polished, performant UIs in React 19 and Next.js 15

• Own features end-to-end: from data fetching and server actions to routing and UI

• Contribute to and evolve shared UI components and design system

• Work on cutting-edge, real-time voice/AI experiences and streaming interfaces

• Collaborate closely with the team to make product and technical decisions

• You’ll be working with a seasoned team, including a lead engineer who spent over a decade at Apple

Why join us? 🌟

• At DNA Technology, we believe in clear communication - we regularly talk about what works and what doesn’t, and how we can make things better (not just in code).

• Private healthcare, a multisport card, and regular “how are you doing?” check-ins are part of our routine.

• Your development is extremely important to us! You can count on individual growth sessions to support you on your unique professional journey.

• Team lunches are a thing, and if you’re coming from another city, we’ll cover your travel and hotel.

• We don’t do layers of management. Everyone has a voice and real influence on how we work.

• We’re remote-first: work from wherever you like in Poland, or drop by our Łódź office whenever you feel like it ☕

What are we looking for? 🕵️‍♀️

• 5+ years building React applications with modern hooks and component architecture

• Strong Next.js experience (13+), including App Router and Server Components

• Solid TypeScript skills and ability to write clean, maintainable code

• Experience working with shared UI libraries and design systems

• Comfort working in a small, fast-moving team where autonomy is a key

• Being product-minded and value-oriented

Bonus points?

• Curious about how AI tools (LLMs) can shape the future of user interfaces.

• Working on real-time UX: streaming UIs, Web Audio, or conversational interfaces

• Experience integrating AI/assistant-driven features

• Strong understanding of performance optimization and scalable design systems

Sounds like a fit? Let’s talk! 🚀