Hq Barcelona - Senior Data Scientist

JobandtalentWho we are: We are aworkforce on-demand companythat heavilyrelies on tech. We integrate the complete process of selecting, hiring, and managing employees, being the first in digitizing all the steps, introducingArtificial Intelligence solutionsin multiple phases, obtaining faster and higher-quality service for our clients, and great satisfaction and loyalty for our workers.Our Impact on Society: Our vision is to create along-term job security condition for our workerswhile providingflexible solutions to our clients. We can do this by concatenating different short-term contracts and minimizing-or completely removing-their unemployed time. We want to remove the need for finding a job ever again.Data-Driven: Being the owner of the entire hiring funnel, workforce management, and working experience, give us veryunique datathat we transform into powerful knowledge tomake better decisions, improve job-candidate matches,estimate qualityand affinity, andshare performancefeedback with our workers and clients. We are the most advanced workforce on-demand company thanks to our data and the way we use it.Great Challenges for the Data Team: Integrating verydifferent AI solutionsto improve the experience for both our workers and employers (Shift Optimization, Machine Learning algorithms, Quality Score Estimations, Document recognition, etc.), relying on a verypowerful ETLthat permitsendless automatizationswhile keeping the focus ondata quality.Growth Overview: An annual growth of170%, available in multiple countries: the UK, Spain, Germany, Sweden, Mexico, Colombia, France, and more are coming. HQ in Madrid with a second big presence in Barcelona and some remote workers in the UK, The Netherlands, and the USA. And finally, some of our great clients areAmazon, XPOLogistics,Cabify, Santander,Just Eat, etc.Senior Data ScientistYou will be part of ourData Science team, called "Labs", becoming atechnical leaderwithin a team formed by 5 Data Scientists, with senior, mid and junior profiles, working on a quite wide set of challenges.We are looking for a verytechnical profilethat is willing to takeownershipof key projects and contributing tostrategical decision-making. Few examples of the responsibilities are:Help planning the long-term and short-term roadmaps, define your OKRs, and take clear ownership of them.Take full leadership of a project, being able to start it from scratch and bring it to production synchronizing with other Data and Software Engineers.You should have a very strong technical understanding of the statistical methodologies to use and how the algorithms work behind the scene.As a Senior profile, you should also be able to help out other younger colleagues in multiple projects, jumping in to remove blockers and reduce attritions.As a Senior profile, you should be able to Introduce good practices to raise the performance and the quality level of the team.Ability to deal with stakeholders (less technical) collecting requirements, and thinking in advance to future needs.Few examples of projects include:Work on theQuality Scoremodel of our users and clients, using the various different types of data sources we have to be a fair model that can estimate the performance and the engagement of the users with that specific client environment.Work on theMatching Algorithm, improving theLearning-to-Rankmodel that is combining multiple algorithms to match the best workers and candidates to a given job position.Work on thescheduler optimization algorithm, aLinear Programmingmodel that is able to find the optimal shifts from a given demand as well as assign the best workers considering their abilities and preferences.Work on aforecastingmodel that can predict the upcoming demand of vacancies, estimate if ourmarketplacealready has enough workers for this demand, and in case notify Marketing or other departments.TheData Teamis a quite independent department formed by BI, Labs, and Engineering teams. All the teams work very closely, and we take care of deploying our own models and solutions. This makes us very flexible and able to move quickly to maximize our impact.Requirements and SkillsTechnical degree in Engineering or Quantitative field, aPh.D.is a plus.We are looking for Senior profiles with proven working experience (outside of academia).Preferred a mix of experience in bothstartupandbig enterpriseenvironmentsStrong theoretical and applied knowledge inStatistics(hypothesis testing,supervised and unsupervised models,etc.).Strong programming skills withPythonandSQL. Any other language is a plusExperience withNoSQLdatabasesStrong experience in advancedData Analysis, data retrieval, cleansing, investigations, etc.Experience in code collaboration (PR/code review, good practices), CI/CD, monitoring and logging services, and solutions.Experience in at least 2 of these topics (ordered by importance):ClassificationandRegressionproblems.Information Retrieval.Operations Research, in particular withLinearand/orConstraint Programming.Computer Vision(mainly document detection and recognition).Natural Language Processing.A plus, experience withSpark, Apache Hadoop, Airflow.A plus, experience with ML libraries such as XGBoost, TensorFlow, Or-Tools.Fluent in Englishis a must, able tocommunicate effectivelywith different levels of management, as well as the business and technical communities.Avalid work permitto be employed in Spain.Offer in ShortGreat ownershipof the projects with adirect impacton the product.A mix ofmanagementandtechnical leadershippositionCompetitive SalaryA complete benefits program that includes flexible remuneration through expenses for restaurants, transport, childcare, andhealth insurance.Ayearly budgetfor Conferences/meetup/self-learning.Possibility ofworking remotely.Ayearly budgetfor Conferences/meetup/self-learning.Working in aninternationalandmultidisciplinary teamYou will be working in theData Science team(read thelast blog posts), together with Full-stack Engineers, Data Scientists, and Data Analysts.Q&AHow theJobandtalent Engineering teamis structured?What we call "Product Team" includes the Product & Design, Tech, and Data.Product & Design ? all the Product Owners and Designers that belong to the different Product Features teams (cross-functional teams that take care of some specific parts of the product).Tech ? includes all the main engineering profiles and guilds, such as Backend, Frontend, Android, iOS, and Platform. The majority of them are embedded into the Product Features teams to create our extremely independent and cross-functional teams.Data ? includes three different teams, namely Data Analytics, Data Science, and Data Engineering.How theJobandtalent Data teamis organized?The Data team includes three different teams that work very closely together.The Data Engineering one owns the data pipelines and processes that generate the data needed by our Data Warehouse, and thus by the entire Jobandtalent.The Data Science team, which owns all the models used by the Product teamsThe Data Analytics team is composed of two types of profiles: (i) Product Data Analysts, which work embedded in the Product Team following a Hub'n'Spoke approach, and (ii) Data Partners, which are working closely with other departments such as Finance, Sales, Marketing, etc.How do we organize thetasksand theplanning?We are very data-driven, we have clear KPIs for each project, team, and goal.We define strong OKRs for every quarter, we work with bi-weekly Sprint (each team has its own JIRA Project), and a Data PM is leading the delivery processes and metrics.

Technical degree in Engineering or Quantitative field, a Ph.D. is a plus. We are looking for Senior profiles with proven working experience (outside of academia). Preferred a mix of experience in both startup and big enterprise environments Strong theoretical and applied knowledge in Statistics ( hypothesis testing, supervised and unsupervised models, etc. ). Strong programming skills with Python and SQL . Any other language is a plus Experience with NoSQL databases Strong experience in advanced Data Analysis , data retrieval, cleansing, investigations, etc. Experience in code collaboration (PR/code review, good practices), CI/CD, monitoring and logging services, and solutions. Experience in at least 2 of these topics (ordered by importance): Classification and Regression problems., Linear and/or Constraint Programming . Computer Vision (mainly document detection and recognition). Natural Language Processing. A plus, experience with Spark , Apache Hadoop, Airflow. A plus, experience with ML libraries such as XGBoost, TensorFlow, Or-Tools. Fluent in English is a must, able to communicate effectively with different levels of management, as well as the business and technical communities. A valid work permit