Data Scientist

Location

Romania

Posted

4 days ago

Salary

0

Seniority

Mid Level

Job Description

Data Scientist

CapsLock

Role Description We are seeking a driven and creative Data Scientist with a minimum of 3 years of experience in a data science or machine learning role, who will be instrumental in building predictive models, testing hypotheses, and providing statistically sound insights that enhance our lead generation capabilities. The Data Scientist will be part of our analytics team, working closely with IT, marketing, media buying and CRO teams to transform raw data into actionable insights. - Leverage agentic AI-assisted development tools throughout the workflow, from exploratory analysis and feature engineering to model development and pipeline building. - Design, develop, and deploy machine learning models to segment and score landing page visitors based on intent and lead quality. - Engineer predictive features from raw user behavior data to improve model accuracy and business relevance. - Build and maintain real-time scoring pipelines that enable dynamic postback signals to ad networks. - Collaborate with marketing and analytics teams to define quality/intent tiers and translate business logic into quantifiable model outputs. - Conduct exploratory data analysis and experimentation to uncover patterns in user behavior that correlate with downstream lead quality and conversion outcomes. - Continuously monitor, evaluate, and iterate on model performance, ensuring alignment with evolving business goals and traffic patterns. - Contribute to forecasting and budget projection initiatives as needed. - Clearly communicate, document and present findings, methodologies, and model specifications for cross-functional, non-technical stakeholders. - Support data-driven decision-making by quantifying uncertainty, assessing statistical significance, and challenging assumptions. - Identify and quantify relationships between behavioral signals, traffic sources, campaign attributes, and lead quality outcomes. - Serve as an analytical partner to media buyers and marketing teams. Qualifications - 3+ years of experience in data science, machine learning, or a related quantitative role. - Comfortable working in agentic AI-assisted development environments (e.g., Cursor, ClaudeCode, Antigravity). - Strong proficiency in Python, including ML libraries such as scikit-learn, XGBoost, LightGBM, or similar. - Solid experience with feature engineering, particularly from behavioral, clickstream, or event-based data. - Familiarity with deploying models in production environments; experience with real-time or near-real-time inference is a strong plus. - Strong foundation in statistical inference, hypothesis testing and root-cause analysis. - Proficiency in SQL and experience working with large-scale datasets. - Understanding of classification, regression, and clustering techniques. - Exposure to digital marketing concepts and KPIs (CPL, CVR, ROAS, etc.) is highly desirable. - Ability to translate vague business questions into testable hypotheses and structured analyses. - Excellent problem-solving skills with the ability to work through ambiguity. - Strong communication skills with the ability to explain technical concepts to non-technical stakeholders. - Team-oriented mindset with a collaborative and proactive approach. - Upper-Intermediate or higher level of English. Requirements - Experience building or using custom skills, prompt workflows, or tool-use patterns within agentic coding environments. - Experience in lead generation, ad-tech, or performance marketing environments. - Familiarity with ad network optimization, postback mechanisms, or conversion APIs. - Experience with cloud platforms and MLOps tools. - Background in time-series forecasting or demand modeling.

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