Tech Lead AI Engineer (Machine Learning) - Lisbon-based

We're working with one of the largest proptech in LatAm. Our client is a Series E and counting with a growing team of 3.500 people. Through innovation, data, and design, they’re transforming the housing journey — from renting and buying homes to managing and financing properties — with trust, simplicity, and efficiency at its core.

This role sits in Lisbon, and we're looking for candidates already based in Portugal or within Europe, willing to relocate (relocation provided).

The Role:

We're looking for a passionate and technically strong Tech Lead ML Engineer to build and scale the AI Core Platform powering all core AI initiatives.This person will play a pivotal role in designing shared infrastructure to support multiple LLM-based use cases across the company — enabling teams to move faster, deliver exceptional experiences, and operate securely and at scale.

What You Will Do:

• Design, build, and evolve a common AI Core Platform supporting all conversational AI use cases.
• Architect scalable systems to orchestrate LLM agents, manage evaluation frameworks, and ensure consistent, high-quality AI experiences.
• Define shared interfaces, frameworks, and evaluation tools for product teams consuming AI capabilities.
• Collaborate closely with the Software Engineering Platform team to ensure deep integration, security, and reliability.
• Lead the technical direction of the AI platform, making key decisions on architecture, tools, and vendor integrations.
• Act as a hands-on technical leader, mentoring and guiding a growing team.
• Ensure robust, secure, and scalable deployment of LLMs and AI services across the organization.

You Will Be Great If You Have:

• 7+ years of combined experience in Software Engineering, Data, ML, or AI, with strong foundations in software architecture.
• Proven experience building ML or AI platforms — from orchestration to deployment and monitoring.
• Strong command of distributed systems, MLOps, and cloud infrastructure (AWS, GCP, or similar).
• Hands-on experience with LLMs, RAG, or agentic frameworks, and integrating them into production environments.
• Solid experience leading technical direction or small engineering teams, fostering collaboration and excellence.
• Ability to balance strategic thinking with hands-on execution — designing scalable frameworks while writing production-grade code.
• Strong communication skills and comfort working in cross-functional teams across engineering, product, and data.
• Fluency in English.
• Based in Lisbon or willing to relocate to Portugal (relocation support provided).