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SSSigma Software logo

Sigma Software

Kyiv, ua

Senior Data Scientist.

FULL TIMEREMOTESENIOR LEVELDATA & ML
  • Analyze and investigate existing detection logic built on multiple interconnected signals and rule-based expressions
  • Understand and 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 and support decision-making
  • 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
  • Operate effectively in a fast-paced environment with shifting priorities and short delivery cycles
  • Contribute to improving analytical methodologies and approaches within the newly forming team
  • 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
  • Strong engineering mindset with the ability 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


    WILL BE A PLUS

  • Experience with Snowflake
  • Experience in cybersecurity, fraud detection, or risk analytics domains
  • Experience working with rule-based systems or detection pipelines
  • Exposure to enterprise-scale analytics platforms
  • Understanding of data pipeline architecture and signal processing systems
     

PERSONAL PROFILE

  • Independent and proactive problem solver
  • Curious and investigative mindset
  • Comfortable working in ambiguous environments
  • Strong ownership mentality
  • Adaptable to changing priorities and fast delivery cycles
  • Collaborative and communication-oriented
  • Detail-oriented with strong systems thinking capabilities

 

Pay
Not stated
Where
Kyiv, ua
Work
Remote
Type
Full time
Posted
22 Oct, 2026
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