Senior Data Scientist

About the Position

Senior Data Scientist

Remote

Warsaw, Maz, Poland

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Quick Facts

• Role: Senior Data Scientist
• Focus: Large-scale analytics and cybersecurity detection systems (not ML-focused)
• Work style: Autonomous investigation, systems thinking, fast iteration

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Description

You will join a newly forming team to improve and simplify a sophisticated analytics and detection ecosystem in a cybersecurity product environment. The work involves analyzing complex, rule-based detection logic, investigating enterprise-scale data flows and processing pipelines, and proposing optimizations while preserving detection quality. The position is not machine-learning focused-it emphasizes deep analytical thinking, engineering understanding, and independent investigation.

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Responsibilities

• Analyze and investigate detection logic built on multiple interconnected signals and rule-based expressions
• Map complex data flows, processing pipelines, and dependencies across enterprise systems
• Identify redundancy, inefficiencies, and unnecessary complexity within current detection structures
• Propose simplification and optimization approaches while preserving detection quality and operational effectiveness
• Conduct exploratory analysis on large and complex datasets to validate hypotheses
• Assess downstream implications and operational risks of proposed changes before implementation
• Translate analytical findings into clear recommendations for technical and non-technical stakeholders
• Collaborate closely with engineers, data scientists, and security researchers to gather context and resolve blockers independently

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Requirements

• 5+ years of experience in Data Science, Analytics Engineering, Data Analytics, or related analytical roles
• Strong proficiency in Python and SQL
• Experience working with large-scale and complex datasets
• Strong analytical and problem-solving skills with the ability to independently structure ambiguous problems
• Proven experience driving investigations from hypothesis generation to data-backed conclusions
• Engineering mindset to understand and reason about complex logic and codebases
• Ability to evaluate system behavior and understand downstream impacts of analytical decisions
• Experience collaborating cross-functionally with engineering and research teams
• Ability to work autonomously with minimal supervision
• Upper-intermediate or higher English level
• Familiarity with JavaScript (preferred)

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We Offer

• Opportunity to work on technically sophisticated products
• Influence analytical practices from the early stages of a newly forming team
• Collaboration with experienced international teams in a fast-paced environment

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About the Company

At Sigma Software, we are dedicated to developing innovative cybersecurity solutions. Our team is composed of experienced professionals who are passionate about creating secure and efficient systems. Join us to make a significant impact in the field of cybersecurity.