Senior Data Analyst

Job Description

Ciklum is looking for a Senior Data Analyst to join our team full-time in Ukraine.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About The Role

As a Senior Data Analyst, an experienced data professional who excels in analyzing production data for quality and insight, driving improvements and informing strategic decisions, you’ll partner with Observability Engineers, ML Scientists, Data Engineering, and DevOps to turn raw telemetry into intelligence.

The Client is changing the way organizations protect their data-centers and clouds from advanced threats. Our team boasts some of the most talented and experienced cybersecurity and data center experts. We're always looking for new people to inspire us and make us better.

We’re seeking an experienced Data Analyst to join the Micro-Segmentation AI/ML Platform team. In this role, you will lead data analysis efforts—ensuring data quality, cataloging, and governance—while delivering actionable insights that drive strategic decisions in network security and segmentation.

We’re a dynamic team building the next-generation micro-segmentation platform at the intersection of AI/ML and network security. Our solution helps enterprises automatically classify, monitor, and enforce fine-grained policies across millions of flows—reducing attack surfaces and accelerating incident response.

Responsibilities

Business Intelligence & Reporting

• Collaborate with stakeholders (security, product, operations) to define key metrics and reporting requirements
• Design, build, and maintain BI dashboards that surface ingestion health, policy effectiveness, and segmentation drift
• Continuously refine reports and visualizations (Grafana, Looker, Tableau, or Power BI) to meet evolving needs

Data Analysis & Insights

• Analyze large-scale flow logs, policy-violation records, and asset inventories to uncover trends and anomalies
• Lead deep-dive investigations—e.g., correlating configuration changes to incident rates or unexpected segmentation gaps
• Ensure all ETL pipelines (Airflow-orchestrated Spark jobs) deliver accurate, timely data

Data Quality & Governance

• Define and enforce data-quality rules (schema validation, de-duplication, anomaly detection)
• Maintain a comprehensive data catalog with lineage tracking
• Partner with Data Engineering to automate quality checks and metadata capture

Collaboration & Communication

• Present complex analyses in clear, concise reports to both technical and non-technical audiences

Requirements

• Bachelor’s Data Science, Statistics, Mathematics is desirable
• 5+ years in data analysis or BI—ideally within network security, cloud operations, or a SOC environment
• Very strong proficiency with SQL, including complex joins, window functions, CTEs, and performance tuning
• Deep experience with Spark (PySpark/Scala) and Python data libraries (pandas, NumPy)
• Comfortable building and maintaining ETL pipelines (Airflow, Bash, Python)
• Hands-on with data visualization tools (Tableau, Power BI, Looker, Grafana) and dashboard best practices
• Strong statistical analysis skills: hypothesis testing, regression, clustering, anomaly detection
• Experience defining and tracking KPIs and SLAs; able to translate business questions into measurable metrics
• Good understanding of data lake and lakehouse concepts, partitioning, and performant storage formats (Parquet, Delta)
• Familiarity with data catalog/governance platforms (Apache Atlas, DataHub) and Git for schema/version control
• Skilled in data profiling, cleansing, and enrichment techniques to ensure high-quality inputs
• Strong problem-solving mindset, attention to detail, and ability to work under ambiguity
• Exceptional communication skills—able to translate complex data into actionable business insights in English

What`s in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies
• Flexibility: Enjoy radical flexibility – work remotely or from an office, your choice
• Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations

About Us

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.

As one of Ukraine’s largest IT companies and a top employer recognized by Forbes, we’ve spent over 20 years delivering meaningful tech solutions. We proudly support diverse talent and military veterans, recognizing their unique skills and perspectives they bring to shaping the future.

Want to learn more about us? Follow us on Instagram, Facebook, LinkedIn.

Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.