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Lago

Senior AI/ML Engineer - Inventory Forecasting & Decision Systems

Brazil
Salary
$20 - $40 /HR
Level
Senior
Work type
Remote · Brazil only

Not stated in the posting: visa.

Open. First seen 3 October 2026.

About the role

Role: Senior AI/ML Engineer — Inventory Forecasting & Decision Systems
Hours: 9am - 6pm Eastern Time (Remote)
USD Salary: $20-$40/HR

We are seeking a highly skilled Senior AI/ML Engineer to drive the development of advanced inventory forecasting and decision systems. This is a senior, individual-contributor role with direct business impact, ideal for a self-directed engineer comfortable navigating ambiguity and building end-to-end ML solutions.

Responsibilities

  • Build and improve inventory demand forecasting models using ML and statistical methods.
  • Own ML models end-to-end: data collection → feature engineering → training → deployment → monitoring → iteration.
  • Develop decision systems that support inventory planning, pricing, and demand decisions.
  • Build and maintain data pipelines and API integrations for external and internal data sources.
  • Work with messy real-world data to ensure model reliability through rigorous validation and testing.
  • Implement LLM/AI-agent workflows to translate domain logic into automated processes.
  • Operate independently in a small team, setting priorities, unblocking challenges, and communicating tradeoffs clearly.

Requirements

Must-Have Qualifications

  • 5+ years of Python experience in production ML systems (beyond notebooks/research).
  • Deep experience with statistical modeling, including ensemble methods, kNN, calibration, cross-validation, and feature engineering.
  • Expertise in time-series modeling & forecasting, including seasonality, trend decomposition, safety stock, and demand planning.
  • Proven track record of shipping ML models that drive real business decisions (forecasting, pricing, demand planning).
  • Strong intuition for messy, real-world data, including bias correction, stale signal handling, error cancellation, and distribution shifts.
  • Experience with API integration and data pipeline architecture at scale.
  • Hands-on experience with LLM/AI-agent workflows, including prompt engineering and evaluation frameworks.
  • Proven ability to validate models rigorously: LOO, backtesting, production vs offline metric gaps.
  • Self-directed, comfortable in a fast-evolving, small team environment.

Nice-to-Have Qualifications

  • Experience in Amazon marketplace, e-commerce, or retail analytics.
  • Familiarity with similarity-based methods (kNN, embeddings, vector search).
  • Experience maintaining long-lived model systems (v1 → v30+ iteration cycles).
  • Prior startup or founder-adjacent experience.

Benefits

  • Remote Work: Work from anywhere—our team is global, and we value work-life balance.
  • Growth Opportunities: As a key player i you’ll have the chance to shape your role and grow with us.
  • Innovative Culture: Join a team that is passionate about leveraging data to solve challenges and drive success in a rapidly evolving market.

As part of our recruitment process, all candidates are kindly asked to read, understand, and agree to Lago’s Confidentiality and Non-Circumvention Agreement. This ensures a respectful and professional experience for everyone involved.

What this role asks for

Particular to this role

Prompt Engineering · Vector Databases

Rare in Lago's other 41 open postings.

Standard for data science / ML roles

LLM · Machine Learning · Python

Common in data science / ML postings at any company.

Read against Lago's other open postings on this site.

The team: Dev

This role is one of 17 open in Dev.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

Python (9 of 17), AWS (6 of 17), CSS (6 of 17), GCP (6 of 17), HTML (6 of 17), JavaScript (6 of 17), CI/CD (5 of 17)

OTHER ROLES ON THIS TEAM

From the team and dates on Lago's own job board.

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