Join a high-impact cybersecurity project focused on protecting applications from automated attacks and malicious activity. We are looking for a Senior Data Engineer who thrives in autonomous environments, enjoys solving complex data challenges, and is ready to drive modernization initiatives across scalable data systems.
You will become a core member of a small, highly proactive engineering team working on a large-scale cybersecurity product. The role requires deep involvement in understanding existing systems, including legacy code and interconnected services, identifying inefficiencies and technical gaps, and driving meaningful improvements across the platform. You will collaborate closely with product engineering teams, influence technical decisions, and contribute to both immediate optimizations and long-term platform evolution.
As part of Sigma Software, you will collaborate with experienced international teams and have the opportunity to shape scalable data infrastructure used in cybersecurity products operating at scale. We value ownership, strategic thinking, and technical excellence, offering an environment where engineers can influence architectural decisions, drive meaningful improvements, and continue growing professionally.
CUSTOMER
Our Customer is a global cybersecurity company delivering advanced digital protection solutions for businesses, organizations, and communities worldwide. Operating across multiple cybersecurity domains, the company focuses on identifying vulnerabilities, preventing threats, and strengthening digital resilience through scalable and reliable security products.
PROJECT
The project focuses on developing and improving a cybersecurity solution designed to protect applications from automated attacks and malicious traffic. The team works on scalable, high-performance data infrastructure powering security analytics, monitoring, and detection capabilities. The environment combines modernization of legacy systems with the development of reliable and scalable data workflows, requiring strong ownership and close collaboration with cross-functional engineering teams.
Key Technologies: Snowflake, DBT, SQL, Python, Elastic Stack, Airflow
Job Description- 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
- 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
- Strong hands-on experience with DBT for data transformation and modeling
- Solid understanding of database concepts, including DDL, DML, indexing, normalization, and advanced SQL techniques
- Hands-on experience working with Snowflake
- Experience with Elastic Stack technologies
- Proven experience designing, building, and maintaining large-scale data pipelines
- Strong analytical thinking and problem-solving skills
- Ability to work independently in a high-autonomy engineering environment
- Experience driving technical initiatives from idea through implementation
- Strong communication and collaboration skills
- Upper-Intermediate English level or higher
WILL BE A PLUS
- Experience with Airflow for workflow orchestration
Skills Required
- 5+ years of commercial experience in data engineering
- Expert-level Python skills
- Expert-level SQL skills, including complex query optimization
- Strong hands-on experience with dbt for data transformation and modeling
- Knowledge of DDL, DML, indexing, normalization, and advanced SQL techniques
- Hands-on experience with Snowflake
- Experience with Elastic Stack technologies
- Experience designing, building, and maintaining large-scale data pipelines
- Strong analytical thinking and problem-solving skills
- Ability to work independently in a high-autonomy engineering environment
- Experience driving technical initiatives from idea through implementation
- Strong communication and collaboration skills
- Upper-Intermediate English level or higher
- Experience with Airflow for workflow orchestration
What We Do
Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 21 years, providing comprehensive IT solutions to various businesses, ranging from startups to established software product houses. As one of Europe's substantial IT consultancies, it brings together a dedicated workforce of over 2,100 professionals in 40 offices across 19 countries. With a diverse client base, including more than 300 enterprises, including Fortune 500 stalwarts, Sigma Software Group is a preferred choice for developing solutions that help businesses create cutting-edge products while meeting their unique needs. Sigma Software Group operates as a dynamic ecosystem of tech companies, offering 25 ready-to-implement innovative products and 40+ value-added services. Furthermore, Sigma Software Group is committed to fostering innovation through initiatives such as the Sigma Software Labs business incubator, Sigma Software University, the SID Venture Partners VC Fund, UA Tech Network, Techosystem, the European Business Association, and other collaborative efforts. Since 2015, Sigma Software Group has consistently earned recognition on the IAOP's prestigious World's Top 100 Outsourcing list. The company's accomplishments have also been acknowledged by prominent global media outlets such as Forbes, CNBC, The Times, and Reuters
