Senior Data Engineer

Sigma Software · Remote; Warsaw, Masovian Voivodeship, Poland

  • Senior
  • Full-time
  • Posted 2026-11-02
  • Confirmed live on 10 November 2026

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Job description

Job Description
The product is a solution to safeguard applications from automated attacks.
The engineer is expected to operate as a core member of a small, high-autonomy, proactive team focused on:
developing a deep understanding of a core products including legacy code and multiple services;
proactively finding problems, inefficiencies, risks, technical gaps and areas for improvement, implementing them;
negotiating with product engineering teams to get buy-in for changes implementation;
planning short-term wins and long-term improvement strategy.
Responsibilities:
•  Maintain and enhance existing data processes, ensuring reliability, performance, and scalability;
•  Build a full understanding of existing tables, flows, and jobs - what the data is, where it's used, where it can be improved, where to build new ones;
•  Drive system reliability and performance improvements across all data workflows;
•  Own and execute data process modernization initiatives;
•  Collaborate cross-functionally to ensure architectural alignment and best-practice adoption.

Qualifications
Must-Have Requirements:
•  5+ years of overall experience in Data Engineering;
•  Expert-level SQL skills: being able to optimize complex queries for latency and performance;
•  Proficiency with DBT for data transformation and modeling;
•  Strong data engineering fundamentals and database knowledge (DDL/DML/SQL);
•  Hands-on experience with Snowflake and Elastic;
•  Deep experience building, scaling, and managing large-scale data pipelines;
•  Proven ability to work independently, take ownership, and drive initiatives to completion.

Nice-to-Have: • Practical experience with Airflow for workflow orchestration.

Additional Information
Timezone: EU/Ukraine

Company Description
The Сustomer provides comprehensive cybersecurity solutions designed to protect individuals, organizations, and communities. Operating across various sectors, the company addresses vulnerabilities and ensures protection against a wide range of risks, especially in the digital space.

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