Senior / Staff Product Engineer

You'll work across the full stack on both the core platform and Zest, the AI Campaign Manager for creator marketing. That could mean designing a new workflow for managing creator campaigns, making collaboration data feel instant, or turning models, search, and product context into a reliable AI experience that customers can trust.

What you'll do

• Own meaningful product areas from problem definition through architecture, implementation, launch, and iteration.
• Build customer-facing features across the marketplace, campaign management, collaboration, payments, analytics, and creator workflows.
• Help make Zest an indispensable part of how modern companies run creator-led growth.
• Turn foundation models into structured, reliable product experiences—not just impressive prototypes.
• Work on intelligent workflows involving agents, tools, retrieval, search, recommendations, and generated interfaces.
• Develop the evaluations, observability, and feedback loops needed to understand whether AI features are genuinely useful.
• Talk directly with customers and translate ambiguous needs into simple product decisions.
• At Staff level, provide technical direction across projects, raise the engineering bar, and help other engineers make better decisions.

What you'll need

• Significant experience building and shipping high-quality, customer-facing software. 5+ years is a useful guide, but the scope and quality of your work matter more than the number.
• Strong TypeScript and React fundamentals, with experience working across the full stack.
• A track record of independently driving complex features or products from an ambiguous starting point to measurable customer impact.
• Strong product and technical judgment. You care about what should be built, how it should feel, and whether it actually solves the problem.
• Experience building with LLMs or other applied AI systems in production.
• An understanding of the challenges behind reliable AI products: evaluation, context, retrieval, model behavior, latency, cost, observability, and failure modes.
• Clear, proactive communication and the ability to collaborate effectively in a remote environment.

What they offer

• Competitive salary and equity in a Series A company.
• Remote-first work with the option to work together in Berlin if you are local.
• Latest Apple hardware and the tools you need to do your best work.
• 25 days of paid vacation, plus local public holidays.
• Regular team events and off-sites across Europe and beyond.