# Senior Data Scientist - Ads Marketplace & Platform Optimization

> Gramian Consulting Group · Brazil (Remote) · Contract · Posted 2026-05-04

**Workplace:** remote

**Department:** Partnerships

## Description

**About Us**

Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs.

**Role overview**

We are looking for an experienced **Senior Data Scientist** to join a high-impact Ads Data Science team focused on scaling and optimizing a rapidly growing **advertising marketplace**.

Advertising is a core revenue driver, and this role sits at the heart of building a **high-performance, data-driven marketplace ecosystem** — where advertisers, users, and platform dynamics interact in real time.

You will work on problems such as **auction dynamics, pricing, targeting, relevance, and marketplace efficiency**, leveraging large-scale data and advanced modeling techniques to drive measurable business impact.

**Commitments Required: 8 hours per day with an overlap of 4 hours with PST.**

**Employment type: Contractor or FTE**

**Duration of contract: long-term, but with 3-month increments based on performance**

**Location:**

### **Responsibilities**

-   Design and apply **data science and machine learning solutions** to improve ads marketplace performance
-   Analyze large-scale datasets to uncover **patterns in marketplace behavior** (bidding, pricing, engagement, conversion)
-   Develop models for **prediction, anomaly detection, and optimization**
-   Define and track **core marketplace metrics** (supply/demand balance, auction efficiency, advertiser value)
-   Build **data assets** (tables, dashboards, self-serve tools) to empower product and engineering teams
-   Partner with Product and Engineering to **translate marketplace challenges into DS solutions**
-   Design and analyze **A/B experiments and causal inference frameworks** to validate impact
-   Communicate insights and recommendations to **cross-functional stakeholders**

## Requirements

-   5+ years of experience in **Data Science, Machine Learning, or Applied Statistics**
-   Strong experience working on **marketplace platforms** (e.g., ads platforms, ride-sharing, e-commerce, or similar two-sided ecosystems)
-   Deep understanding of **marketplace dynamics** (auction systems, pricing, supply/demand, ranking, or allocation problems)
-   Strong foundation in **statistical modeling, machine learning, and experimental design**
-   Experience with **large-scale data processing** (e.g., Spark, Hadoop, Hive, or BigQuery)
-   Advanced proficiency in **SQL** and working with large relational datasets
-   Strong programming skills in **Python (preferred) or R**
-   Experience building and interpreting **A/B tests and causal inference models**
-   Ability to work with **cross-functional teams** and influence product decisions through data

### **Nice to Have**

-   Experience in **online advertising / ad tech ecosystems**
-   Experience with **auction optimization, bidding strategies, or ranking systems**
-   Familiarity with **real-time systems or large-scale recommendation systems**
-   Experience building **self-serve analytics tools or data platforms**

## Apply

[Apply at Gramian Consulting Group](https://apply.workable.com/gramian/j/CFA836F31A/apply)

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