Senior Data Scientist — Predictive Analytics & Big Data

Softeq; Warszawa; On-site; PLN 120,000 - 190,000; Full time

Job summary

Softeq in Warsaw is seeking a data analytics engineer to explore operational and financial data, build predictive models, and prepare analytics products such as KPI dashboards and trend analyses.

The role focuses on Python data science, Spark SQL, and Databricks in a collaborative environment with cross-functional stakeholders. You will validate results and document methodologies, contributing to production-ready pipelines.

Qualifications

• Analytical Python: pandas, scikit-learn, statistical libraries, clear visualization
• Spark SQL and PySpark, large tables, window functions, distributed execution
• Databricks notebooks, jobs, experiment tracking, catalog and data permissions
• Understanding of medallion model and source layers for analysis
• Statistics and time-series methods, experiment design and quality metrics
• Experience with raw data from enterprise systems of record: gaps, duplicates, retroactive corrections, inconsistent reference data
• Ability to explain and defend a result to a non-technical stakeholder

Responsibilities

• Explores operational and financial data, frames hypotheses and tests them
• Builds predictive and analytical models: delays and durations, congestion, cost, plan-versus-actual variance
• Engineers features over the curated data layers and documents their meaning and provenance
• Works with historical data states so that a training sample reflects what was known at the time of the event
• Prepares the inputs behind analytics products: KPI dashboards, user activity analytics, executive summaries, trend analysis
• Aligns metric and calculation definitions with the semantic layer so figures agree across reports, APIs and interfaces
• Validates results with business stakeholders and produces model documentation

Skills

Python (Pandas)

Spark SQL

PySpark

Databricks

Time-series analysis

Statistics

Data visualization

Tools

Databricks

SQL

Job description

Softeq in Warsaw is seeking a data analytics engineer to explore operational and financial data, build predictive models, and prepare analytics products such as KPI dashboards and trend analyses.

The role focuses on Python data science, Spark SQL, and Databricks in a collaborative environment with cross-functional stakeholders. You will validate results and document methodologies, contributing to production-ready pipelines.