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iFood

Online food delivery platform charging commissions

Expert Data Scientist - Busca

Applied Machine LearningConfirmed live in the last 24 hours
Full-timeBrazilNo salary listedIn-person

About the Job

Requirements

  • Demonstrated advanced command of statistical and predictive modeling, including supervised and unsupervised techniques, with sound methodological judgment and the ability to challenge problem formulations and choose appropriately simple solutions.
  • Practical experience applying quasi-experimental methods, including difference-in-differences, propensity scores, instrumental variables, and synthetic controls, in complex systems with interference and spillover effects.
  • A track record of defining outcome evaluation criteria and key performance indicators that measure real phenomena, identifying misleading proxies, and persuading stakeholders to adopt more accurate metrics.
  • Experience building AI-powered workflows that are adopted by teams or organizations and use automation to strengthen analytical rigor.
  • Ability to connect Data Science and Engineering, establishing organizational practices for code quality, reproducibility, and production readiness in analytical work.
  • Ability to improve analytical efficiency and reduce waste through efficient experimental design, intelligent sampling, and reduced analytical rework.
  • Ability to influence engineering, product, and business teams toward rigorous analytical approaches without formal authority.
  • Ability to define analytical products for business stakeholders and AI agents, including programmatic validation for agent-first consumption.

Responsibilities

  • Develop and continuously improve the iFood search pipeline, contributing to the quality and relevance of results from query understanding through reranking using machine learning, natural language processing, and data-driven experimentation.
  • Generate models for search stages such as query understanding and classification, reranking, and results personalization.
  • Define analytical approaches for complex business problems, formulate problems beyond obvious solutions, select among predictive modeling, causal inference, experimentation, or AI systems, and establish success metrics that capture the relevant phenomenon.
  • Build and validate statistically robust, production-level models that generalize, are auditable, and support high-value decisions under real-world data conditions.
  • Lead the design and analysis of complex experiments, including A/B tests and quasi-experiments involving network effects, seasonality, and interference, with rigorous bias control, adequate statistical power, and interpretation of heterogeneous effects.
  • Review hypotheses, assumptions, and conclusions from product, business, and engineering teams before they inform strategic decisions.
  • Work with leadership to determine which problems are worth solving and what validations are needed before investment, connecting each experiment to measurable business impact.
  • Design analytical products for different consumers, from business stakeholders to AI agents, with programmatic validation for agent-first consumption.
  • Document methods, create validation frameworks, lead organization-scale experimentation RFCs and ADRs, and establish scalable analytical standards.

Desired Qualifications

  • Prior experience developing large-scale search or recommendation systems, including query understanding, reranking, relevance metrics such as NDCG, MRR, and Recall@K, and modern embedding models such as Sentence-Transformers or similar architectures.
  • Practical experience with distributed data pipelines and MLOps tools such as MLflow and Databricks for deployment and versioning.
  • Advanced English for following technical literature and documentation.
  • Cross-company impact creating analytical capabilities used across multiple domains and business areas, with learning flywheels that influence the organizational roadmap.
  • Ability to anticipate future capabilities and influence organizational Data Science strategy.
  • Experience mentoring multiple people with measurable growth, creating scalable learning materials, and introducing methodologies that change organizational practices.

About the Company

iFood

Online food delivery platform charging commissions

iFood is an online food delivery service in Brazil that connects customers with a wide network of restaurants and grocery stores through a digital platform. It earns money by charging partner restaurants and stores commissions on orders, offering customer subscription plans that provide benefits like free delivery and discounts, and selling advertising space to partners. The platform works by letting users browse menus, place orders, and choose delivery options; orders route to participating restaurants and stores who fulfill them, with iFood taking a commission from each sale, while subscription and advertising features provide additional revenue. iFood differentiates itself through its large partner network and diversified revenue streams in a highly competitive market, aiming to be the leading platform for convenient food and grocery delivery in Brazil.

Company size
10,001+
Company stage
N/A
Total funding
$822.4M
Headquarters
Osasco, Brazil
Founded
2011

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