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Full Stack Product Engineer (45K€ - 55K€)

Joppy · Greater Barcelona Metropolitan Area

Full Stack EngineeringHybrid

About this role

The Product Engineer will design, build, and maintain a full-stack platform and AI Agents to improve restaurant operations. The role involves architecting scalable solutions, mentoring team members, and contributing to process improvements. The technical environment includes TypeScript, React, Node, Fastify, PostgreSQL, MongoDB, and Google Cloud Platform. You will work on projects such as enhancing AI automation, developing AI workflows, and building business health dashboards. The position operates in a hybrid model based in Barcelona.

Skills & technologies

Nice to have

  • AI workflows

Read full description

We're looking for a proactive and driven Product Engineer for one of our clients to build and deliver impactful features that make a real difference for restaurant operations.


🎯 Responsibilities

  • Design, build, and maintain a full-stack platform and AI Agents
  • Focus on delivering outcomes and overcome challenges
  • Architect scalable solutions to support rapid growth
  • Contribute to process improvement, evolving from scrappy solutions to smarter approaches
  • Mentor team members and help shape the team culture
  • Share maintenance responsibilities such as bug fixing, monitoring, and dependency management within a rotating support squad


Example objectives in your first months might include:

  • Enhance automation so our AI agent handles more administrative work for customers
  • Enable effortless purchase orders for customers directly within the platform
  • Develop AI workflows to automate operational tasks for restaurants
  • Build dashboards and reporting features that help customers track their business health
  • Streamline internal operations with AI-powered tools for cross-team collaboration


🛠️ Requirements

  • At least 3 years of engineering experience working on SaaS applications in Agile environments
  • Proven ability to build products end to end, including discovery, infrastructure, backend, frontend, and testing
  • Familiarity with TypeScript, React, and Node
  • Experience designing and implementing architectures using services, databases, external APIs, caches, queues, and events
  • Experience working with Microservices or related service-oriented architectures
  • Hands-on experience developing with AI and strong judgment in applying AI effectively
  • Fluency in Spanish and comfortable communicating in English (documentation and projects are in English, day-to-day conversations are often in Spanish)


➕ Nice to have

  • Direct experience building AI workflows for production use


🤗 We offer

  • Competitive salary (€40–55k gross/year), with growth potential
  • Bright modern office in Barcelona (Poblenou) with hybrid work model (minimum two days per week onsite, remaining remote for focused work)
  • Access to a wide range of AI tools for experimentation
  • Subsidized Urban Sports Club membership
  • Additional benefits through Playflow for optimized spending of part of your salary


⚙️ Tech Stack

  • TypeScript, React, React Router
  • Fastify, PostgreSQL, MongoDB
  • Google Cloud Platform, Langfuse, PostHog
  • Various AI integrations
  • Primarily serverless architecture with a combination of microservices and a main service


About Joppy

Joppy is a technology recruitment platform built for developers by developers.


✅ No CV is required. Just say what you know and what you want.

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✅ Only relevant offers that match your preferences. No more Javascript offers for Java developers.

✅ Get rewarded if you get hired.


Keep an eye on tech job opportunities anonymously and find the job that makes you happy.

€40,000–€55,000 / yearApply now

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