Senior Data Engineer (Cybersecurity)
Sigma Software9 days ago
Remote, EMEA or Warsaw, PolandSenior
Responsibilities
- Maintain and enhance existing data processes with a focus on reliability, scalability, and performance.
- Analyze data models, workflows, tables, processing jobs, legacy code, and interconnected services to identify technical gaps and inefficiencies.
- Design, build, optimize, and support large-scale data pipelines and data transformation processes.
- Optimize complex SQL queries and improve data processing latency and efficiency.
- Drive data platform modernization initiatives and contribute to long-term architectural evolution.
- Collaborate with product engineering and cross-functional teams on technical solutions and implementation strategies.
- Drive technical initiatives from initial concept through implementation and participate in solution design and continuous improvement.
Requirements
- At least 5 years of commercial Data Engineering experience.
- Expert-level Python and SQL skills, including practical experience optimizing complex queries for performance and scalability.
- Strong hands-on experience with dbt for data transformation and modeling.
- Strong understanding of database concepts including DDL, DML, indexing, normalization, and advanced SQL techniques.
- Hands-on experience with Snowflake and Elastic Stack technologies.
- Proven experience designing, building, and maintaining large-scale data pipelines.
- Ability to work independently in a high-autonomy engineering environment and drive technical initiatives.
- Strong analytical, problem-solving, communication, and collaboration skills.
- Upper-Intermediate English level or higher is a plus.
- Experience with Airflow for workflow orchestration is a plus.
About Sigma Software
Sigma Software is a London-headquartered, privately held IT consultancy that designs and builds custom software for startups and enterprises. The company provides end-to-end services—engineering, web and mobile development, .NET/Java platforms, AR/VR, and UI/UX—delivered via outsourcing, managed teams, and consulting. Founded in 2002, it supports long-term product development and modernization projects across multiple industries for global clients.