Are you passionate about building scalable Big Data solutions and optimizing high-load platforms? We are looking for a Senior Big Data Engineer to join a long-term project in the cybersecurity and AdTech domain focused on real-time risk assessment for digital advertising ecosystems.
We at Sigma Software offer the opportunity to work on impactful products, collaborate with experienced engineering teams, and contribute to solutions operating on large-scale datasets in a fast-paced environment. You will have the freedom to influence technical decisions and drive meaningful improvements across the platform.
CUSTOMER
Our Customer operates in the cybersecurity domain and develops solutions aimed at protecting organizations and digital ecosystems from online risks and vulnerabilities. The company focuses on building advanced technologies that improve security, reliability, and operational resilience across various industries.
PROJECT
The project is a real-time risk assessment platform for digital advertising ecosystems. The solution helps customers identify potentially low-quality or fraudulent traffic and automatically make decisions before allocating advertising budgets. The platform processes large-scale data streams and requires continuous improvements in performance, scalability, and cost efficiency.
At the initial stage, the role will focus on Snowflake optimization and identifying inefficiencies in data pipelines and SQL queries. In the long term, the engineer will contribute to backend development, platform architecture improvements, and implementation of scalable Java-based services.
Job Description- Optimize Snowflake usage and improve infrastructure cost efficiency
- Identify inefficiencies in data pipelines and SQL queries
- Implement performance and cost optimization improvements
- Enhance and maintain Java-based services
- Implement and support new platform features
- Improve existing engineering processes and platform components
- Develop scalable and reliable solutions for high-load environments
- Contribute to architecture improvements and implementation of new components
- Collaborate with distributed engineering teams to deliver stable platform functionality
- At least 5 years of commercial experience in Big Data engineering
- Strong hands-on experience with Snowflake
- Strong expertise in Python
- Strong expertise in Java
- Advanced SQL knowledge and experience optimizing complex queries
- Solid Computer Science fundamentals
- Upper-Intermediate or higher English level
WILL BE A PLUS
- Experience with AWS cloud services
- Experience working with Amazon S3
- Experience in AdTech, cybersecurity, fraud detection, or risk assessment domains
PERSONAL PROFILE
- Proactive and ownership-driven mindset
- Strong analytical and troubleshooting skills
- Ability to work effectively in fast-paced environments
- Team-oriented communication style
- Focus on scalable and maintainable engineering solutions
Skills Required
- At least 5 years of commercial Big Data engineering experience
- Strong hands-on experience with Snowflake
- Strong expertise in Python
- Strong expertise in Java
- Advanced SQL knowledge and experience optimizing complex queries
- Solid Computer Science fundamentals
- Upper-Intermediate or higher English level
- Experience with AWS cloud services
- Experience working with Amazon S3
- Experience in AdTech, cybersecurity, fraud detection, or risk assessment domains
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
