Senior Data Engineer - Cybersecurity Data Platform

Sigma Software; Województwo mazowieckie; On-site; PLN 180,000 - 260,000; Full time

Job summary

Sigma Software is seeking a Senior Data Engineer to drive modernization of scalable data systems in a cybersecurity product. You will own data pipelines, optimize performance, and collaborate with international teams to shape architecture and data workflows.

The role emphasizes autonomy, deep systems understanding, and continuous improvement in a high-impact security domain. You will contribute to both immediate optimizations and long-term platform evolution.

Qualifications

• 5+ years of commercial experience in Data Engineering.
• Expert-level Python skills.
• Expert-level SQL skills with practical experience optimizing complex queries for performance and scalability.
• Hands-on experience with DBT for data transformation and modeling.
• Experience with Snowflake and Elastic Stack technologies.

Responsibilities

• Maintain and enhance existing data processes with a focus on reliability, scalability, and performance optimization.
• Analyze and deeply understand existing data models, workflows, tables, and processing jobs.
• Identify technical gaps, bottlenecks, inefficiencies, and opportunities for architectural improvements.
• Design, optimize, and support large-scale data pipelines and transformation processes.
• Drive modernization initiatives across the data platform and contribute to long-term architectural evolution.
• Optimize complex SQL queries and improve data processing latency and efficiency.
• Collaborate with product engineering and cross-functional teams on technical solutions and implementation strategies.
• Contribute to both short-term delivery goals and long-term platform development initiatives.
• Ensure adherence to best practices in data engineering, system reliability, and performance optimization.
• Participate in technical discussions, solution design, and continuous improvement initiatives.

Skills

Python

SQL

DBT

Snowflake

Elastic Stack

Airflow

Data pipelines

Big data

Tools

DBT

Snowflake

Elastic Stack

Airflow

Job description

Sigma Software is seeking a Senior Data Engineer to drive modernization of scalable data systems in a cybersecurity product. You will own data pipelines, optimize performance, and collaborate with international teams to shape architecture and data workflows.

The role emphasizes autonomy, deep systems understanding, and continuous improvement in a high-impact security domain. You will contribute to both immediate optimizations and long-term platform evolution.