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Data Scientist for Machine Learning Team

Hybrid in Barcelona·Full-time·Added 15 days ago

Smadex

22 open roles

Overview

Job details

  • Full-time hours

    Per the ad.

  • Hybrid

    Office and home days — the ad has the split.

Requirements

  • Have the right to work in Spain

    Smadex doesn't mention sponsorship in the ad.

  • Work in English

    English is required, per the ad.

  • Be near Barcelona for hybrid days

    No relocation package mentioned.

  • Have 5+ years of experience

    Mid-level role.

  • University degree

    “A strong fundamental education (BSc, MSc, or PhD) in a quantitative field such as Mathematics, Statistics, Physics, Computer Science, or Data Science.” — per the ad.

Pay & benefits

What you'll get

  • Integrate a highly motivated and young team.
  • Great compensation package.
  • Top location at the heart of Barcelona in a penthouse office with a rooftop terrace, barbeque, and a fully stocked fridge.
  • Work from home: 2 days/week
  • Private Health Insurance
  • Access to LinkedIn Learning
  • Meal vouchers - Tickets Restaurant monthly allowance.
  • Monthly gym allowance: Choose between DiR Gym and Wellhub
  • Monthly TGIF events.
  • Regular team-building events.
  • Fun and friendly work environment with talented marketers and engineers from over 40+ countries
  • And more!

Visa & relocation

Please note that we do NOT provide VISA sponsorship. Candidates without a legal permit to work in Spain won't be considered.

Requirements

What we're looking for

  • Educational Background: A strong fundamental education (BSc, MSc, or PhD) in a quantitative field such as Mathematics, Statistics, Physics, Computer Science, or Data Science.
  • Experience: 5+ years of applied Data Science and Machine Learning, training and analyzing DNN models.
  • Technical Stack:Python, SQL.
  • Statistical Rigor: A deep understanding of Statistics and Probability theory.
  • ML Knowledge: Expertise with core DNN and ML architectures

The role

Our mission is to continue to improve our ad-tech platform, especially the core of it, our algorithms, to help our clients achieve their programmatic advertising campaign goals. We want to give our employees a job they'll love, where they will be challenged to improve results through real-life engineering and data analysis and where everyone's implication has an impact.

Ad-tech is one of the most demanding environments for machine learning. At its core, our DSP operates as an ultra-low-latency recommender system, matching the right ad to the right user in milliseconds.You will be operating at massive scale under strict latency constraints, solving unique modeling challenges that aren't even covered in current scientific literature.

What you'll do

As a Data Scientist embedded within our Machine Learning team, your mission is to bridge the gap between theoretical model design and real-world production reality. You will be the analytical anchor dedicated to ensuring the performance, interpretability and stability of our core Deep Neural Networks models within our high-frequency, complex auction ecosystem with millions of ad requests processed every second.

We are looking for a deeply analytical individual with very strong ML expertise-someone who isn't satisfied with "it works," but needs to understand the system at a fundamental level. You will apply scientific rigor to drive measurable improvements in our live bidding performance.

  • Model Understanding and Training: Understand our ML models in production at a fundamental level, explaining why they make specific predictions and, behave in the way they behave. To do so, you will autonomously formulate different hypotheses and validate them by performing the appropriate data analyses and by training different models to compare the results.
  • Deep-Dive Auction Dynamics Analysis: Conduct in-depth analysis of model behavior in the live auctioned environment to understand how our algorithms and models interact with market dynamics.
  • Experimentation: Design and analyze experiments, A/B testing, to validate hypotheses regarding bidding strategies and model improvements.
  • System Optimization: Identify performance bottlenecks in the models and propose architectural or feature enhancements to resolve non-optimal performance at the system level.

Are you ready to be part of the new unicorn?

Are you ready to be part of the new unicorn? Keep reading!

About Smadex

Smadex is a Madrid-based advertising technology company specializing in programmatic mobile advertising and performance marketing. The company provides a demand-side platform (DSP) that enables advertisers to run targeted campaigns across mobile apps and web, with a strong focus on data-driven optimization and creative innovation. Smadex operates globally, with a team of over 100 professionals serving clients across Europe, the US, and other international markets.

Smadex's headquarters and main engineering hub are in Madrid, Spain, making it a key player in the local AdTech ecosystem. The company is known for its collaborative, data-centric culture and invests heavily in machine learning, data science, and creative technology. For international professionals, Smadex offers the opportunity to work in a fast-growing, global-facing company in the heart of Spain, with roles spanning engineering, data science, product, and creative strategy.

Industry
AdTech
Founded
2011
Employees
100–500
Headquarters
Madrid, Spain
In Spain
Madrid
Website
smadex.com

Good to know if you are moving

  • Smadex is headquartered in Madrid, Spain, offering international professionals the chance to work in a vibrant European capital with a growing tech scene.
  • The company operates globally, with clients and partners across Europe, the US, and Asia, providing exposure to international markets.
  • Smadex focuses on data-driven advertising, making it an attractive employer for data scientists, machine learning engineers, and product managers.
  • The company has a strong emphasis on creative technology, with roles like Creative Technologist and Game Developer for playable ads, offering unique opportunities in the AdTech space.
  • Smadex is a mid-sized company, allowing employees to have a significant impact on products and processes.

In their own words

About the company & team

Smadex is a performance advertising engine for mobile apps, enabling the world's leading marketers to grow across Mobile and Connected TV (CTV). Powered by AI models trained on real campaign outcomes, Smadex delivers profitable growth at scale. Headquartered in Barcelona, with teams across the Americas, EMEA, and APAC, Smadex is a business unit of Entravision (NYSE: EVC).

All open roles at Smadex
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