Senior Data Scientist – Personalization, Predictions

This is a fully remote position, open to applicants in Czechia.

📋 Description

• Transform ambiguous business inquiries into quantifiable challenges

• Conduct large-scale analysis of behavioral data, product catalogs, and event streams

• Identify predictive features within BigQuery and Databricks

• Develop and assess models for forecasting and contextual personalization, including propensity, churn, contextual bandits, autosegmentation, uplift, and incrementality

• Create offline metrics, backtests, and A/B tests to evaluate model effectiveness

• Investigate external methodologies, conduct proofs of concept, and evaluate outcomes

• Transfer models and evidence to ML Engineering for implementation

• Communicate results to Product and Engineering leadership, as well as customers

• Deliver two operational models within 12 months and pinpoint the business metrics they influenced

• Resolve team inquiries with data-backed evidence and produce authoritative documentation

⛳️ Requirements

• Over 5 years of experience in developing machine learning models that have been successfully deployed in the industry

• Proficient in Python programming

• Strong SQL abilities with the capability to independently navigate a data warehouse

• Solid foundation in classical machine learning, including tree-based models, regression, classification, and clustering techniques

• Expertise in rigorous experiment design and evaluation

• Familiarity with cloud data platforms; practical experience with GCP/BigQuery and Databricks is preferred

• A quantitative degree or equivalent practical experience

• Proficient in English, both written and spoken

• Significant expertise in at least one of the following areas: causal inference and uplift modeling; contextual bandits, sequential decision-making, or off-policy evaluation; ranking, recommendation, or information retrieval; LLM evaluation or applied GenAI

• Experience with agentic coding tools is a plus

🏝️ Benefits

• A significant level of autonomy and trust, with no time tracking, corporate regulations, or lengthy approval processes

• Flexible working hours

• A virtual-first work environment with Bloomreach Hubs located on three continents

• Company-sponsored events

• 5 paid days off for volunteering

• People Development Program featuring personal development workshops

• Support from communication coaches

• Leader Development Program that includes feedback, coaching, and regular check-ins

• An annual professional education budget of $1,500 for books, courses, and certifications

• Employee Assistance Program with access to counselors

• Subscription to Calm

• One additional DisConnect day off each quarter

• Opportunities for sports, yoga, and meditation

• Extended parental leave of up to 26 calendar weeks for Primary Caregivers

• Restricted Stock Units or Stock Options, depending on the role, seniority, and location

• Company performance bonus

• Employee referral bonus of up to $3,000

• Rewards for work anniversaries