Senior Full-Stack Engineer - AI-First GTM Platform

Zero; Helsinki; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Equity

Hybrid work in Helsinki

Remote within EU time zones

Travel to global hubs

Job summary

Zero is building an AI-first GTM platform in Helsinki. We’re hiring full-stack engineers who ship from day one, own end-to-end features, and care about UX. This is a meaningful equity opportunity.

You’ll work on AI-native pipelines, real-time backends, and a Vue.js/TypeScript frontend, collaborating directly with customers to ship fast.

Hybrid in Helsinki (2–4 office days) or remote within EU time zones, with travel to global hubs as needed.

Qualifications

• 3+ years shipping product at startups.
• Strong full-stack skills in TypeScript/JavaScript (Vue.js/React frontend, Node.js backend).
• Solid PostgreSQL knowledge and performance tuning.
• Genuine excitement about applied AI and opinions on its direction.
• Experience with AI coding agents (Claude Code, Codex, Cursor).
• Good product instincts and UX focus.

Responsibilities

• Architect and ship AI-native features (LLM pipelines, RAG, embeddings).
• Build a fast, compound platform with deep AI functionality and polished UX.
• Develop real-time backend systems processing emails, meetings, Slack, and product data.
• Frontend development in Vue.js and TypeScript with custom component library.
• Prototype features directly with customers; minimal PM layer.
• Utilize AI coding agents to accelerate delivery.

Skills

Full-stack TS/JS

Vue.js / React

Node.js

PostgreSQL

Applied AI enthusiasm

AI coding agents

WebSockets

Tools

WebSockets

Job description

Zero is building an AI-first GTM platform in Helsinki. We’re hiring full-stack engineers who ship from day one, own end-to-end features, and care about UX. This is a meaningful equity opportunity.

You’ll work on AI-native pipelines, real-time backends, and a Vue.js/TypeScript frontend, collaborating directly with customers to ship fast.

Hybrid in Helsinki (2–4 office days) or remote within EU time zones, with travel to global hubs as needed.