Senior Engineer – AI Product Innovation

Location: Barcelona (Remote-first, hybrid when established)
Type: Full-time

Our client, the UK’s leading home improvement marketplace, is looking for a Senior Engineer to join their AI Product Innovation team in Barcelona. Their platform connects millions of homeowners with trusted tradespeople, helping jobs get done right while enabling tradespeople to grow their businesses. AI is central to their mission- driving smarter customer experiences, workflow automation, and innovative product features.

Roles and Responsibilities

• Rapidly prototype and test AI-powered features across internal tools and live marketplace experiences

• Work hands-on with AI and LLM APIs/frameworks (OpenAI, Anthropic, LangChain, Google tools) to explore new product possibilities

• Collaborate with Product, Design, Data, and Engineering teams to turn AI experimentation into real-world impact

• Act as an AI champion, bringing new ideas, tools, and approaches to the team

• Translate ambiguous problems into working solutions, balancing experimentation with high engineering standards

What they are looking for:

• Strong software engineering background with production experience

• Hands-on experience with Python and TypeScript

• Experience with AI systems, LLMs, or intelligent automation (projects or professional experience)

• Maker’s mindset: you love prototyping, experimenting, and iterating quickly

• Strong fundamentals: APIs, performance, reliability, scalability

• Comfortable in ambiguous, fast-moving environments

• Excellent communication skills in English (C1/C2)

Nice to Have

• Experience building AI-powered assistants or multi-agent systems

• Familiarity with AI orchestration frameworks or emerging agentic standards

• Background in marketplaces, consumer platforms, or data-rich products

• Exposure to cloud, ML infrastructure, or R&D/innovation environments

What´s in it for you

• Remote-first role, hybrid in Barcelona once team grows (~2 days/week in office)

• Be part of a growing AI team shaping the next generation of products

• Flat structure with direct access to senior leadership

• Regular R&D sessions, planning days, and occasional offsites

• Career growth, internal mobility, and professional development support

• Competitive benefits including social security, paid leave, sick leave, and parental leave

Your future company

You will join a well-established yet fast-evolving international tech company, trusted by millions of users and professionals. With AI deeply embedded in its platform strategy, the company continues to invest in cutting-edge technology to simplify complex processes, improve trust, and deliver meaningful impact at scale.