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Dariia Kovalchuk

@dariiakovalchuk

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Data Analyst (Reporting & Quality) | SQL (BigQuery), Power BI | Reliable dashboards and data validation.

Estonia

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What I'm looking for

I’m looking for a remote (or Europe-based) role in Data Quality, BI, or Reporting where I can use SQL and dashboards to deliver trusted metrics. I enjoy validating data, investigating inconsistencies, and documenting processes clearly. I value ownership, accuracy, continuous improvement, and a collaborative team culture.

I’m a data-focused professional with experience in operations analytics, reporting, and data quality. In my recent roles, I built and maintained weekly/monthly Power BI dashboards, used SQL (BigQuery) for ad-hoc queries and validation, and investigated mismatches across sources to ensure stakeholders could rely on the numbers.

I enjoy work that combines accuracy, structured problem-solving, and clear communication—finding root causes of data issues, documenting processes, and improving workflows to reduce manual effort. I’m also comfortable working with structured classifications (taxonomy/metadata): keeping naming and mapping consistent, reviewing records for accuracy, and creating clear examples for alignment and training.

Tools I use include SQL (BigQuery), Power BI, Excel/Google Sheets (PivotTables, Power Query, lookups), and Jira. I also use Git/GitHub for version control, and I’m actively developing my R skills for analytics.

I’m currently looking for remote roles in Data Quality, BI, or Reporting, where I can own data validation, taxonomy/metadata consistency, dashboards, and trusted metrics.

Experience

Work history, roles, and key accomplishments

iGaming Service Specialist

Gepard Media OÜ

Aug 2025 - Jan 2026 (5 months)

Investigated payment and account cases, performed discrepancy checks across systems, and documented evidence to drive timely resolution; coordinated escalations and supported KYC/compliance workflows to ensure case closure.

Investigation Data Quality Case Management KYC Documentation Issue Tracking Cross system Reconciliation Git Github

Quality Analyst

Hurtigruten Estonia OÜ

Aug 2024 - Jun 2025 (10 months)

Built and maintained weekly and monthly Power BI dashboards to track quality and operational KPIs, wrote BigQuery SQL to extract and validate data, and performed cross-source validation to resolve reporting mismatches.

Power BI SQL (BigQuery)Data Validation Dashboarding KPI Reporting Operational Analysis Documentation Git Github

Senior Travel Consultant

Hurtigruten Estonia OÜ

Jun 2021 - Aug 2024 (3 years 2 months)

Managed complex customer cases end-to-end including bookings, changes, and cancellations with precise documentation, and supported team performance through coaching and handling non-standard cases.

Customer Service Case Management Coaching Documentation Process Improvement Escalation Management booking systems

German Tutor

Atlasnet Language School

Oct 2019 - May 2021 (1 year 7 months)

Taught German to adult learners, adapting lessons to individual needs and learning styles to support steady progress and measurable language skill improvement.

Teaching Curriculum Adaptation Adult Education Communication Interpersonal Skills Lesson planning Assessments

Education

Degrees, certifications, and relevant coursework

Ettevõtluskeskus, Tallinn

Professional Certificate, Data Analytics

2025 - 2026

Grade: 1

Activities and societies: Google Data Analytics Professional Certificate (Coursera/Google), completed Feb 10, 2026. Covered data cleaning, analysis, and visualization using spreadsheets, SQL, Tableau, and R, plus a capstone case study focused on turning data into actionable insights.

Completed the Google Data Analytics Professional Certificate via Coursera focused on core data analysis tools and practices.

GoIT, Kyiv

Certificate, Frontend Development

2022 - 2023

Grade: 1

Activities and societies: Completed a Frontend Development course: Soft Skills (2 classes/4h), HTML+CSS (12 classes/24h) and JavaScript (24 classes/48h), plus 6 tech assignments, 2 career assignments, and 2 team projects. Covered HTML/CSS basics, responsive design, forms, DOM/events, OOP, async/await, APIs/HTTP, storage, and Vite.

Completed a Frontend Development program at GoIT delivered in Tallinn, covering frontend technologies and development practices.