AI Builder - Full Stack
Groupon seeks a Full Stack Engineer to build the core AI platform enabling autonomous AI Agents. You'll design Chain of Thought reasoning flows and agent logic using TypeScript, React, and Node.js in a hybrid role from Madrid or Valencia.
Responsibilities
- Develop and expand our internal AI platform enabling teams to build autonomous AI Agents
- Engineer Chain of Thought reasoning flows and integration layers for agent logic
- Build reliable, long-running AI Agent systems that handle failures at scale
- 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
About the role
Groupon is a marketplace where customers discover new experiences and services everyday and local businesses thrive. To date we have worked with over a million merchant partners worldwide, connecting over 16 million customers with deals across various categories.
In a world often dominated by e-commerce giants, we stand out as one of the few platforms uniquely committed to helping local businesses succeed on a performance basis. Groupon is on a radical journey to transform our business with relentless pursuit of results.
Even with thousands of employees spread across multiple continents, we still maintain a culture that inspires innovation, rewards risk-taking and celebrates success. The impact here can be immediate due to our scale and the speed of our transformation. We're a "best of both worlds" kind of company.
We're big enough to have the resources and scale, but small enough that a single person has a surprising amount of autonomy and can make a meaningful impact.
About the Role 📍Hybrid from Madrid or Valencia You will engineer the core of our proprietary internal platform that democratizes AI across the company. This is not a standard full-stack role maintaining existing systems, you will build the factory that enables other teams to create autonomous AI Agents.
You will design Chain of Thought reasoning flows, integration layers, and agent logic that allow AI to execute complex business tasks at scale. This is applied AI engineering: no model fine-tuning, just sophisticated system design and relentless execution.
You will join a new focused team of two engineers, collaborating daily with the AIGO team and cross-functional partners across Global Operations, Customer Satisfaction, and Engineering.
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: you already use Cursor or Claude Code and possess 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 Knowledge of ML theory (helpful for context, though fine-tuning is not part of the role) What Success Looks Like First 30 days: Set up your development environment, adopt AI-first workflows, gain a functional understanding of our internal AI platform, ship a bug fix to production, and build your first AI Agent using our platform.
First 60 days: Deep dive into a key product area’s architecture, design and implement a small-scale AI feature, and demonstrate independence in troubleshooting and shipping without hand-holding.
First 90 days: Take ownership of a significant AI feature from concept to production, contribute to internal documentation on Agent best practices, and actively participate in architectural reviews as a fully integrated team member.
One year: Transform a portion of our AI platform with a major AI-driven application feature, become recognized as a stakeholder in building and optimizing AI Agents across Groupon, and maintain a high bar for software quality while innovating at speed. We Are Interested In A true builder who wants to engineer the platform that powers AI Agents, not just write prompts.
You bring a balance of “Old School” engineering discipline (reliability, structure) and “New Wave” AI agility. You are excited to use the latest AI-native stack to create sophisticated internal tools that drive global operations and shape how a global company operationalizes AI.
#LI-KH1 #LI-Hybrid Groupon is an AI-First Company We’re committed to building smarter, faster, and more innovative ways of working—and AI plays a key role in how we get there. We encourage candidates to leverage AI tools during the hiring process where it adds value, and we’re always keen to hear how technology improves the way you work.
If you’re passionate about AI or curious to explore how it can elevate your role— you’ll be right at home here. Groupon’s purpose is to build strong communities through thriving small businesses. To learn more about the world’s largest local e-commerce marketplace, click here . You can also find out more about us in the latest Groupon new s as well as learning about our DEI approach .
If all of this sounds like something that’s a great fit for you, then click apply and join us on a mission to become the ultimate destination for local experiences and services. Beware of Recruitment Fraud: Groupon follows a merit-based recruitment process without charging job seekers any fees.
We've noticed an increase in recruitment fraud, including fake job postings and fraudulent interviews and job offers aimed at stealing personal information or money. Be cautious of individuals falsely representing Groupon's Talent Acquisition team with fake job offers. If you encounter any suspicious job offers or interview calls demanding money, recognize these as scams.
Groupon is not responsible for losses from such dealings.
About groupon
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