Senior Staff Data Scientist, AI

Senior Staff Data Scientist, AI at QuintoAndar
Grupo QuintoAndar | Senior Staff Data Scientist - AI
Location: Brasil
Department: Data
About Grupo QuintoAndar
We are Grupo QuintoAndar, the largest real estate ecosystem in Latin America. Guided by a shared purpose of helping people love where they live, we have a diversified portfolio of brands and solutions across different countries in Latin America, covering all phases of the housing journey. We also have a Technology Hub in Portugal. We develop technology and innovation to transform and enhance the overall living experience.
With the support of a world-class team of investors and advisors, including Kaszek, Qualcomm, General Atlantic, and SoftBank, Grupo QuintoAndar is currently valued at over USD 5.1 billion and continues to grow year over year.
Here, you will work with top professionals in the market, in an environment that breathes innovation, collaboration, and high performance. To learn more about our story, visit: https://grupoquintoandar.com/pt/.
Location & Remote Work **_for technology and remote-first roles_
Our technology team operates under a "remote-first" model, which means we work from home and can live anywhere in Brazil. We also offer the option of working from our São Paulo offices or partner coworking spaces, up to twice a week.
Hiring Process Stages
The stages of our hiring processes aim to assess your experiences and allow you to meet our teams and explore career opportunities. They are structured as follows:
– Application
– Interview with Recruiter
– Tech Screening
– Technical Interview with Data Team
– Offer
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 truly 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
– Competitive salary
– Profit sharing
– Meal allowance
– Health insurance
– Dental plan
– Life insurance
– Childcare subsidy and Atypical Parenthood subsidy
– Wellhub
– Home office allowance
– Employee assistance program (mental health, social, legal, and financial support)
– Extended parental leave
– Day off on birthday, Mother’s Day, and Father’s Day
– Benefits Club (discounts on everyday services)
– Discounts at educational institutions
– Reading kit for children – PlayKids
Diversity & Inclusion at Grupo QuintoAndar
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, and will have no impact on your application.
Privacy and Data Protection**
The Grupo QuintoAndar operates in compliance with privacy and data protection laws, including, but not limited to, the Brazilian General Personal Data Protection Law (LGPD) (Law No. 13,709/2018), and ensures 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.