Leart Sadiku

Quality Assurance & Data Systems Specialist

Strategic Project Manager and Quality Assurance professional with MSc in Project Management specializing in Machine Learning & AI. 4+ years of experience leading quality initiatives, managing complex QA programs, and delivering mission-critical projects across remote and hybrid environments. Expert in defining project scope, managing cross-functional teams, ensuring data integrity, and optimizing operational workflows. Specialized in AI/ML system validation, automated QA frameworks, and data governance. Combines advanced project management methodologies (Agile, Scrum, Waterfall) with technical expertise to drive successful project delivery, reduce risks, and ensure quality standards. Proven ability to align technical teams with business objectives while minimizing defects and improving system reliability.

Pristina, Kosovo
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Work Experience
Quality Assurance & Data Systems Specialist
CRU GroupDallas, TX (Remote)
Jul 2024 — Jul 2025
  • Validated and governed large-scale datasets (50+ daily transactions); ensured data accuracy, consistency, and compliance through automated quality checks and governance frameworks, achieving 98.7% data integrity across all systems
  • Reviewed ML training datasets and model outputs; identified labeling errors, anomalies, and quality issues impacting model performance, designing remediation protocols with data science teams
  • Conducted comprehensive AI system testing: prompt optimization, response validation, edge case coverage, and output quality assurance across diverse production scenarios
  • Designed and implemented automated data validation pipelines using Python and SQL; reduced manual QA cycles by 35% and improved error detection efficiency
  • Built Power BI dashboards and performance monitoring systems; tracked accuracy rates, error frequencies, and system health metrics for executive reporting
  • Managed QA project timelines and deliverables; coordinated cross-functional efforts using Jira; 8+ major system updates with zero critical defects
Quality Assurance & Data Systems Specialist
DataTech InnovationsAustin, TX (Hybrid)
Mar 2022 — Jun 2024
  • Executed end-to-end QA testing across data pipelines and analytics platforms; identified 200+ defects with root cause analysis and resolution tracking using Jira
  • Managed data quality audits and ETL validation; ensured schema compliance and data consistency across 15+ interconnected databases using SQL and automation scripts
  • Developed Python-based test automation frameworks; reduced regression testing time by 40% and improved test coverage to 92%
  • Collaborated with product and engineering teams on requirements validation, test case documentation, and quality standards implementation
  • Led project documentation and requirements gathering for 5+ system testing initiatives
  • Managed agile sprint cycles and QA workflows; delivered all sprints on schedule with 95%+ test completion rates
Quality Assurance & Data Systems Specialist
TechVault SystemsPrishtina - Kosova, CO (On-site)
Jun 2020 — Aug 2021
  • Performed manual and exploratory testing on web and cloud applications; documented 100+ test cases and executed regression testing cycles
  • Assisted with data quality validation; cleaned and preprocessed datasets using Excel and basic SQL queries
  • Created defect reports and worked with development teams on issue resolution and validation testing
  • Supported project team in tracking testing milestones and defect resolution; created weekly status reports
Skills
Python (Pandas, NumPy)SQL (MySQL, PostgreSQL)BashHTML/CSSJiraTestRailSeleniumPostmanGit/GitHubJenkinsPower BITableauExcel (Advanced)Google AnalyticsNotionAWS S3Azure DevOpsDocker basicsLinux environmentsData validationAI/ML system testingAutomated QAETL testingPerformance monitoringRoot cause analysisAgile methodologies
Education
Master of Science, Project Management – Machine Learning & AI Specialization
EAE Business School, Barcelona, Spain
  • Barcelona, Spain
Bachelor of Arts, Management & Entrepreneurship; Public Policy & Governance
Rochester Institute of Technology, New York
  • Minor : International Relations
Certifications
ISTQB Certified Tester – Foundation Level (CTFL)
Google Data Analytics Certificate – Data validation & reporting specialization
Power BI
Excel
Accounting Certificate
Languages
English
Fluent
Albanian
Native
Spanish
Intermediate
References available upon request.
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