Senior Data Scientist

Overview We are seeking a highly skilled and experienced Data Scientist to join our team. The primary responsibility of this role will be the development and integration of a predictive Lifetime Value (pLTV) model specifically for our subscription applications . This role requires a strong understanding of statistical modeling , machine learning , and data engineering principles, with a focus on delivering actionable insights to drive business growth.

At Leadtech, we\'ve been redefining digital businesses since 2009, creating innovative online solutions that reach millions of users every month. With a diverse team of over 800 members from 23+ nationalities, we are united by a passion for creativity and collaboration. We specialize in delivering user-centric experiences across web and mobile platforms, where people can connect with our products like never before. We\'re proud of our global reach and committed to fostering an inclusive workplace where every individual contributes to our shared vision of bringing cutting-edge projects to life. Learn more about our journey and mission on our About Us page!

Responsibilities Model Development : Design, develop, and implement advanced pLTV models for subscription applications, utilizing various machine learning techniques and statistical methodologies

Data Acquisition & Preparation : Collaborate with data engineers to ensure the availability of clean, reliable, and relevant data for model development and ongoing maintenance. This includes identifying necessary data sources from subscription apps

Model Validation & Evaluation : Rigorously validate model performance, assess accuracy, and continuously refine models based on new data and business requirements

Integration : Work closely with engineering, product and marketing teams to seamlessly integrate the pLTV model into existing systems and workflows

Performance Monitoring : Establish and maintain robust monitoring mechanisms to track model performance, identify potential issues, and ensure long-term accuracy

A / B Testing & Experimentation : Design and execute A / B tests to evaluate the impact of pLTV-driven strategies and optimizations

Reporting & Communication : Clearly communicate complex analytical findings, model insights, and recommendations to both technical and non-technical stakeholders

Research & Innovation : Stay abreast of the latest advancements in data science, machine learning, and LTV modeling, and proactively identify opportunities for innovation

Qualifications Education : Master\'s or Ph.D. in Data Science, Statistics, Computer Science, Mathematics, or a related quantitative field

Experience : 3+ years of experience in data science, with a proven track record of developing and deploying predictive models in a production environment, specifically with subscription-based businesses

Technical Skills : Proficiency in Python and / or R

Strong experience with SQL for data extraction and manipulation

Solid understanding of machine learning algorithms (e.g., regression, classification, time series analysis, retentioneering, and others)

Experience with big data technologies (e.g., PySpark, Spark) is a plus

Familiarity with cloud platforms (e.g., GCP, BigQuery) for data science workflows

Domain Knowledge : Deep understanding of customer lifetime value (LTV) concepts and methodologies

Experience working with subscription-based business models and their unique data characteristics

Familiarity with A / B testing frameworks and experimental design

Soft Skills : Excellent problem-solving and analytical skills

Strong communication and presentation abilities

Ability to work independently and collaboratively in a fast-paced environment

Detail-oriented with a commitment to data accuracy and model integrity

Benefits Growth and career development : At Leadtech, we prioritize your growth. Enjoy a flexible career path with personalized internal training and an annual budget for external learning opportunities

Work-Life balance : A flexible schedule with flextime (7 - 9 : 30 a.m. start, 3 : 30 - 6 p.m. end) and the option of working full remote or from our Barcelona office. Free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August

Comprehensive Benefits : Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services); 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days

Unique Perks : Office in Barcelona with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace; additional benefits include ticket restaurant and nursery vouchers

Join us in an environment where you\'re free to innovate, learn, and grow alongside passionate professionals. At Leadtech, you\'ll tackle exciting challenges and be part of a vibrant team dedicated to delivering exceptional user experiences

Equal Employment Opportunity Employer : Leadtech is an Equal Employment Opportunity (EEO) Employer. Our team welcomes applicants regardless of race, gender, age, religion, nationality, sexual orientation, gender identity, or disabilities. All we need is your high energy, skills, and willingness to be a part of a great project!

Location : You\'ll have the flexibility to choose whether you\'d like to come to the office every day, from time to time, or work fully remote. If you prefer to be surrounded with amazing people, our exceptional office is in Barcelona\'s Blue Building, located on the city\'s seafront. In addition to stunning views, you\'ll enjoy perks such as free fruit, snacks, and coffee, and you\'ll be able to participate in Mario Kart and table tennis competitions.

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