AdTechTalent
Data Science9 days agoHybrid

Smadex

Machine Learning Engineer

machine learningpredictive modellingreal time biddingprogrammatic advertisingpythonpytorchpandasnumpySQLGitApache SparkJavaScalaAWSdata sciencestatisticsneural networkslogistic regressiongradient boosted treestime series analysistransformersLLMs

Key details

Salary

Not specified

Employment type

Full-time

Seniority

Mid-level

Years experience

3-5

Location

Barcelona, Spain

Full job description

Smadex, a leading ad-tech company in Barcelona, seeks a mid-level full-time Data Scientist specialized in machine learning for programmatic advertising. Responsibilities include optimizing ad spend, predictive modeling for real-time bidding, developing and deploying ML solutions, data analysis, and contributing to product roadmap. Requirements: strong statistics and ML knowledge, programming in Python (pytorch, pandas, numpy), SQL, Git, excellent English communication, and analytical problem-solving skills. Extra points for Master’s in ML/AI/Statistics/CS, experience with production algorithms, Apache Spark, Java/Scala, transformers, LLMs, digital marketing platforms, and AWS services. Benefits include hybrid work (2 days remote), private health insurance, LinkedIn Learning, meal vouchers, gym allowance, team events, and a central Barcelona office. No visa sponsorship provided.

What you'll do

  • Maximize advertisers return on ad spend by selecting the best ad and computing optimal bids for 4 million ad opportunities per second
  • Solve Real Time Bidding challenges such as predicting user response, auction closing price, addressing ML hurdles like extreme positive sample sparsity and labeling delay
  • Research, design, develop and deploy full-stack ML solutions at web scale; own logic and implementation
  • Analyze data and evaluate improvements through model evaluation and AB test statistical significance
  • Contribute ideas and influence product roadmap decisions

Requirements

  • Proactive, autonomous, and results-oriented approach to problem-solving
  • Analytical mind with high attention to detail and ability to manage multiple priorities
  • Strong foundation in statistical concepts and techniques: regression, properties of distributions, statistical significance tests
  • Experience in machine learning and predictive modelling: neural networks, logistic regressions, gradient boosted trees, time series analysis
  • Good programming skills and familiarity with python and its libraries (pytorch, pandas, numpy)
  • Competence in data analysis with SQL and pandas
  • Familiarity with Git
  • Excellent communication skills both verbal and written in English

Tech stack

pythonpytorchpandasnumpySQLGitApache SparkJavaScalaAWS SageMakerAWS EMRAWS EC2AWS AthenaAWS S3

Benefits

Highly motivated and young teamGreat compensation packageOffice located in the heart of Barcelona with rooftop terrace, barbeque, and fully stocked fridgeWork from home 2 days/weekPrivate Health InsuranceAccess to LinkedIn LearningMeal vouchers - Tickets Restaurant monthly allowanceMonthly gym allowance (DiR Gym or Wellhub)Monthly TGIF eventsRegular team-building eventsFun and friendly work environment with talented marketers and engineers from over 40+ countries

Apply now

Ready to take the next step in your career? Click the button below to continue to the application process.

Continue to applicationBrowse more jobs

Similar jobs

More roles worth a look

Related opportunities based on specialty and working model so candidates can keep momentum.