Senior Data Engineer (Cybersecurity platform)

Warsaw, PolandRemoteFull-time5+ yrs experiencePosted 2w ago

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Job description

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

5+ years of commercial experience in Data Engineering
Expert-level SQL skills with hands-on experience optimizing complex queries for performance and scalability
Strong practical experience with DBT for data transformation and modeling
Solid understanding of database concepts, including DDL, DML, and advanced SQL
Hands-on experience with Snowflake
Experience working with Elastic stack technologies
Proven experience designing, building, and maintaining large-scale data pipelines
Strong analytical and problem-solving skills
Ability to work independently in a high-autonomy environment
Experience driving technical initiatives from idea to implementation
Strong communication and collaboration skills
Upper-Intermediate English level

WILL BE A PLUS

Experience with Airflow for workflow orchestration
Experience in cybersecurity or security-related products
Experience modernizing legacy data systems and architectures

Job details are sourced from the employer's original posting.

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About the company

Sigma Software

We are looking for a Senior Go Developer to join our dynamic team and work on cutting-edge AdTech solutions. This role offers the opportunity to experiment with AI, LLMs, and emerging technologies while solving complex challenges in large-scale data processing.  CUSTOMER Our customer is a global leader in contextual advertising with more than 500 employees worldwide. They specialize in delivering highly relevant ads by leveraging AI, real-time technology, and large-scale data processing. Operating in the AdTech industry, they are recognized for innovation in Connected TV (CTV) advertising. The team you will join works with the agility of a startup while benefiting from the resources of a global organization. PROJECT You will contribute to the development of a smart advertising platform that processes terabytes of data to understand audiences and deliver precise, contextual ads. The platform combines AI, LLMs, and emerging technologies to push the boundaries of CTV advertising. In this role, you will own innovation end-to-end — from research and prototyping to delivering production-ready solutions.

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Industry: AdTech
Open roles: 49