Fullstack Engineer (AI)

TL;DR

Fullstack Engineer (AI): Engineering the core of hirify.global's proprietary internal AI platform to democratize AI across the company with an accent on designing Chain of Thought reasoning flows, integration layers, and agent logic. Focus on building reliable, long-running AI Agent systems, handling failures at scale, and designing node-based tools for intent retrieval and context management.

Location: Hybrid from Madrid or Valencia, Spain

Company

hirify.global is a marketplace connecting customers with new experiences and services daily and enabling local businesses to thrive.

What you will do

• Develop and expand the internal AI platform, enabling internal teams to build autonomous AI Agents without deep ML expertise.
• Engineer Chain of Thought reasoning flows and integration layers that power agent logic.
• Build reliable, long-running AI Agent systems that handle failures at scale and prevent cascading outages.
• Design node-based tools for intent retrieval, context management, and API routing.
• Program agent logic using TypeScript, Node.js, Express, React, Next.js, and SQL.
• Maintain a high bar for software quality and reliability while innovating at speed.

Requirements

• Deep expertise in TypeScript, Node.js, Express, React, Next.js, and SQL.
• Practical knowledge of Docker, Kubernetes, and Linux environments.
• Hands-on experience with Chain of Thought (CoT), Agent building, and RAG concepts.
• An AI-First mindset, including using tools like Cursor or Claude Code and possessing the engineering rigor to validate AI-generated code.
• Proven track record of shipping software to production.

Nice to have

• Proficiency with Cursor or Claude Code.
• Advanced knowledge of ML theory.

Culture & Benefits

• Culture that inspires innovation, rewards risk-taking, and celebrates success.
• Significant autonomy and ability to make a meaningful impact due to company scale and transformation speed.
• Committed to building smarter, faster, and more innovative ways of working with AI.
• Encourages leveraging AI tools during the hiring process.