Leadtech

Leadtech is a Barcelona-based Online Innovation Technology company that has rapidly grown since 2007, becoming an industry leader in online project management with a global team of over 570 professionals.

IT Services

Information Technology

251-1K (420)

Founded 2009

15 open positions

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AI Product Engineer

1 month ago

Spain

Full-time

Mid Level

AI Engineer

Software Development

Databricks Express.js GCP LLM Node.js PostgreSQL Python React REST API TypeScript

Apply Now

Leadtech

IT Services

251-1K

Founded 2009

View All Jobs 15

Description

Own features end-to-end from idea to production across frontend, backend, and data layers.
Build and maintain React frontends for multiplatform product experiences.
Develop and maintain Node.js/Express services and RESTful APIs.
Design and orchestrate agentic AI workflows using modern frameworks and protocols.
Integrate LLMs into product features through prompt chains, tool calling, and function execution.
Build and extend automation pipelines connected to AI agents, external APIs, webhooks, and cloud services.
Contribute to database schema design and manage data layers in PostgreSQL and BigQuery.
Help manage cloud infrastructure on Google Cloud Platform.
Instrument features, measure impact, gather user feedback, and iterate based on results.
Collaborate with engineers, designers, and leadership to shape the product roadmap.

Requirements

2–5 years of full-stack experience in a high-output team.
Strong Python fluency for rapid prototyping and library use.
Deep TypeScript and React proficiency, including Hooks, Context API, Vite, and Shadcn UI.
Backend experience with Node.js, Express, REST APIs, and PostgreSQL.
Experience building AI-native products and using agents by default.
Understanding of MCP and agentic orchestration patterns.
Ability to build guardrails and work confidently with AI systems.
Strong product sense and the ability to distinguish good and bad UX.
Self-driven, business-aware mindset focused on solving real problems and moving metrics.
Bonus: hands-on experience with LLMs in production, prompt tuning, RAG pipelines, vector databases such as Pinecone or Weaviate, or agentic frameworks such as LangGraph or CrewAI.
Bonus: familiarity with LLM observability tools such as Langfuse or LangSmith and cloud platforms like GCP.
Bonus: genuine passion for AI and awareness of new models, protocols such as MCP or A2A, and developer tooling.

Benefits

Competitive salary with a full-time permanent contract.
Top-tier private health insurance, including dental and psychological services.
Flexible schedule with flextime and the option to work fully remote or from the Barcelona office.
Free Friday afternoons with a 7-hour workday.
35-hour workweeks in July and August.
25 days of vacation plus your birthday off, with flexible vacation and no blackout days.
Annual budget for external learning, plus personalized internal training and career development support.
Office perks in Barcelona including free coffee, fresh fruit, snacks, a game room, and a rooftop terrace.
Ticket restaurant and nursery vouchers paid directly from gross salary.

Interested in this position?

Apply directly on the company website

Apply Now

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