[Hiring] Senior Full-Stack Engineer @eventfirst

Role Description

You'll join a small team of eight senior engineers to build and improve features across our product. You'll have substantial ownership, a clear view of how your work affects the product, and direct access to the founders and event experts.

AI is part of how our product works. You'll build features and workflows that help people organise events, and make sure they work reliably in practice.

What you will do

• Build and improve features across the frontend, backend and database, from the first product discussion through release and ongoing maintenance.
• Work with our event experts and founders to understand user needs and shape practical solutions.
• Build and evaluate AI features and workflows. Work with our event experts to define good results, investigate failures and turn real examples into tests that catch regressions.
• Make architectural decisions with the team and keep the product secure, reliable and maintainable.
• Use coding agents where they help, and review and verify the resulting software.

Qualifications

• You have shipped and maintained production web products across frontend, backend and database.
• You turn user needs into practical features with clear, usable interfaces.
• You have built AI agents or workflows using prompt engineering, tool calling and failure handling.
• You build evals from representative examples to measure quality, investigate failures and test improvements.
• You design clear data models and choose simple architecture.
• You use coding agents and verify their output for correctness, security and maintainability.
• You work independently and communicate clearly in spoken and written English.

Requirements

• Experience with TypeScript and React is strongly preferred.

Nice to have

• Experience operating AI agents or workflows in production, including monitoring quality, managing latency and cost, and recovering from failures.
• Experience with Next.js, Tailwind CSS, Drizzle, Neon or Vercel.
• Experience turning domain experts' knowledge into software.
• Contributions to open-source projects through code, documentation, bug reports or reviews.

What you should know

• This is a full-time, remote role with substantial overlap with the team's working hours in Berlin.
• The contract depends on your location. In countries where we do not have a legal entity, we work with you under a freelance contract.
• Our working language is English.

Benefits

• Fully remote work.
• Competitive compensation.
• Work alongside senior engineers and experienced founders, with substantial ownership and visibility into product decisions.
• Direct feedback from event experts who understand the problems you're solving.
• A chance to shape the product, architecture and engineering culture.

How to apply

Apply with your CV. No cover letter or public portfolio is required.

Recruiter introduction

We'll discuss your background, the role, your working location and the contract setup.

Technical conversation

You'll present a project you worked on. We'll explore your contribution, technical decisions, product and UX choices, trade-offs, and what you learned from building and maintaining it.