Product Engineer — AI-Native Full Stack

each::labs; Barcelona; Sur place; EUR 55 000 - 75 000; Plein temps

Avantages offerts par ce poste

Stock options with a 1-year cliff and

4-year vesting

Résumé du poste

each::labs in Spain is seeking a Product Engineer who combines a product mindset with AI-native development. You will own features end-to-end, turning user problems into reliable, delightful experiences for developers, creators, and businesses.

You will work with Go, React, TypeScript, and PostgreSQL to build scalable APIs and workflows, using Claude Code or Codex to accelerate progress while maintaining quality and maintainability.

Qualifications

• Experience with Go, React, TypeScript, and PostgreSQL in modern API development.
• Strong ability to design maintainable, scalable systems and APIs.
• Experience using AI agents to accelerate coding and ensure quality.

Responsabilités

• Build products end-to-end from problem to user experience.
• Develop AI-first features leveraging coding agents to accelerate development.
• Create APIs, integrations, workflows, and developer-focused tools.
• Own the user experience through feedback and analytics to reduce friction.
• Measure success by adoption, usability, reliability, and business impact.
• Ship features and provide production support, iterating based on data.
• Improve engineering practices with automation and agentic workflows.

Connaissances

Go

React

TypeScript

PostgreSQL

API development

Outils

Claude Code

Codex

Description du poste

Product Engineer: Build the products developers and creators actually want to use

Spain

• On-site
• Full-time

Job Overview

At each::labs, we're building tools that make generative AI accessible and useful for developers, creators, and businesses. We move fast, experiment continuously, and care about turning powerful technology into products people genuinely want to use.

We're looking for a product-minded engineer who uses AI as a core part of how they build, thinks beyond implementation, and takes ownership from identifying a problem to measuring its impact.

What You'll Do

• Build products end-to-end: Turn user problems into intuitive, reliable experiences, from backend services and APIs to frontend interfaces.
• Develop AI-first: Use coding agents such as Claude Code and Codex to accelerate development, automate workflows, and improve how software is built, tested, and maintained.
• Build for developers and creators: Develop APIs, integrations, workflows, and creative tools that make complex AI capabilities simple to use.
• Own the user experience: Understand how people use our products through feedback, PostHog analytics, and behavioral data. Identify friction, experiment, and continuously improve.
• Think in outcomes: Challenge assumptions, prioritize meaningful problems, and measure success through adoption, usability, reliability, and business impact.
• Ship and operate: Own features through deployment, monitoring, iteration, and production support.
• Improve how we build: Experiment with agentic workflows, automation, and engineering practices that help the entire team deliver better software.

Experience with AWS, distributed systems, observability, and developer platforms is a plus.

What we're looking for

• Strong product engineering mindset: You care about why something should exist, who it's for, and whether it solves the problem.
• Full-stack capabilities: Solid experience with Go, React, TypeScript, PostgreSQL, and modern API development.
• AI-native development experience: Practical use of Claude Code, Codex, or similar coding agents beyond basic code generation. You know how to delegate, verify, and integrate AI-generated work.
• Strong engineering fundamentals: You can design maintainable systems, reason about trade-offs, test effectively, and debug production issues.
• User-driven decision-making: Experience using product analytics, experimentation, and customer feedback to guide improvements.
• Ownership and autonomy: Comfortable with ambiguity, rapid iteration, and taking responsibility for results.
• Clear communication: You collaborate effectively across engineering, product, and business.

What Matters Here

• Problems over tools. Technology is a means to solve something valuable.
• Outcomes over output. Shipping code isn't success unless it creates value.
• AI as leverage. We expect you to rethink how software is developed, not simply type faster.
• Experience matters. Great functionality should also be intuitive and enjoyable.
• Ownership end-to-end. Understand the problem, build the solution, measure the result, and improve it.

What we offer

• 25 days of annual leave, plus local public holidays.
• 5-day carryover within the first three months of the following year.
• Stock options with a 1-year cliff and 4-year vesting.
• A high-trust, high-ownership environment with minimal bureaucracy, no micromanagement, and real influence over the product.