Grupo QuintoAndar | Senior Staff Data Scientist - AI

Location: Portugal

Department: Data

About QuintoAndar Group

We are Grupo QuintoAndar, the largest real estate ecosystem in Latin America. Guided by a shared purpose of helping people love the place they live, we have a diverse portfolio of brands and solutions across different countries in Latin America, as well as a Tech Hub in Portugal. We develop technology and innovation to transform and boost the housing experience.

About the Team

Your future team is the heart of our AI conversational experience, dedicated to balancing operational efficiency with a world-class user journey. As a Senior Staff Data Scientist, you will drive success across two critical workstreams: Support XP, which focuses on optimizing end-to-end support through high-quality FAQ retrieval and intelligent human escalation (including the integration of Wall-e), and AI Central, where you will architect the "brain" of our system. Your challenge is to orchestrate specialized agents from across the company into a single, coherent experience—shaping its personality, governing the agent topology, and maintaining global user context. This is a high-impact role where you will define the standards for intelligence, behavior, and rigorous evaluation to scale our AI tools to 100% of our users.

Requirements

• Experience: 10+ years of experience in technical fields, with a strong track record of transitioning into and leading Data Science and AI product development.

• GenAI & LLM Expertise: Proven track record of building and scaling production-grade AI products using Large Language Models.

• Agentic Frameworks: Hands-on experience with agentic SDKs such as LangChain, LangFuse, CrewAI, or Google Vertex AI SDK.

• Advanced Evaluation: Deep knowledge in establishing offline and online evaluation kits for agentic systems (e.g., RAGAS, LLM-as-a-judge).

• System Orchestration: Ability to design complex agent topologies and maintain global user context across fragmented journeys.

• Efficiency & Optimization: Experience managing LLM costs and latency while improving task completion rates and routing precision.

• Technical Leadership: Ability to influence cross-functional P&T teams to integrate specialized capabilities into a coherent central host.

• Fluent English: Excellent verbal and written communication skills for global collaboration and technical documentation.

Important:

• Our hiring process starts with the application! If you genuinely want to be part of our team, please complete this step of the process. We analyze all candidates individually and provide feedback to all applicants.
• All communication will be conducted via email, so please stay tuned for our messages and release the domain @quintoandar.com.br to ensure our emails are not sent to spam.

Benefits

• Meal allowance
• Health insurance (Multicare), with/ co-pay (in Portugal)
• Work from home allowance
• Transportation
• 25 vacation days per year
• Labor accident insurance
• Life insurance
• Child care allowance (children up to 5 years old): 100,00 EUR/month
• Parental leave
• 10 consecutive extra days of paid recess at the end of the year, not discounted from vacation 

Diversity & Inclusion at QuintoAndar Group

We value diversity and want everyone to feel welcome here, regardless of their age, gender identity, sexual orientation, race, color, ethnicity, origin, disability, religion, or any other characteristic. All our job openings are open to all individuals! You'll notice there are some diversity questions in the application form. For affirmative action roles, this information may be used to verify your alignment with the target audience for the opportunity. In such cases, it may be used for elimination purposes. For non-affirmative action roles, this data will be used anonymously, exclusively to monitor and improve our inclusion practices in the hiring process. They will have no impact on your application.

Privacy and Data Protection

The Grupo QuintoAndar operates in compliance with privacy and data protection laws, ensuring the security of your data. To learn more, please access our Privacy Notice for Candidates. For questions or to exercise your rights as a data subject, please contact us through our Service Channel.