Available to hire
I am Dmitri Eskin, a Senior QA and data quality specialist with over 18 years of experience delivering robust testing solutions across public sector, healthcare, financial services, and cloud-enabled environments. I excel at defining test strategies, building and maintaining automation frameworks (Selenium with Python), and integrating tests into CI/CD pipelines using Git-based tools. I also bring strong expertise in data validation, ETL, and cloud platforms (AWS and Azure), and I enjoy leading cross-functional teams to deliver high-quality software.
In roles at OPS, Phreesia, TD Bank, and Health of Ontario Pension Plan, I collaborated with developers, business analysts, QA leads, and stakeholders to clarify requirements, align on acceptance criteria, and ensure accessibility and governance standards. I am passionate about continuous improvement, mentoring teams, and delivering reliable, scalable testing solutions that accelerate product delivery while maintaining compliance.
Skills
See more
Language
English
Fluent
Work Experience
Sr QA Analyst at Ontario Public Service
February 1, 2026 - April 1, 2026Executed automation testing using Selenium for large-scale Social Assistance systems in an OPS environment. Designed, maintained, and enhanced robust automation test scripts and frameworks; integrated with GitLab and enabling automated execution through Jenkins CI/CD pipelines. Developed test strategies, plans, cases, and data with full traceability to requirements. Performed functional, integration, regression, and system testing across GUI and backend components. Collaborated closely with developers, BAs, QA leads, and project managers to ensure acceptance criteria and quality expectations. Identified and tracked defects via JIRA and GitLab with root cause analysis. Participated in Agile ceremonies and ensured testing adhered to OPS QA standards, governance, and accessibility requirements. Created detailed execution reports, defect logs, and test coverage metrics. Supported CI/CD integration and test environment validation; contributed to QA process improvements.
Sr Data Quality Analyst at Phreesia
September 1, 2021 - October 1, 2025Led end-to-end QA testing for large-scale healthcare data platforms on AWS, ensuring data accuracy and integrity across cloud-based pipelines. Defined test strategies for ETL pipelines, migrations, and transformations with full traceability to business and technical requirements. Performed advanced backend data validation using SQL across multiple data sources, validated source-to-target mappings, and reconciliation rules. Designed and implemented performance testing with JMeter to assess scalability under varying workloads. Validated data ingestion and processing through AWS services (S3, Glue, Lambda, Kinesis, Athena, DynamoDB). Built automation for data quality validation using Python and AWS Glue. Integrated testing within CI/CD pipelines and maintained governance and regulatory compliance. Created dashboards and quality metrics for stakeholders.
Sr. QA Analyst at TD Bank | Marketing Technology Group
July 1, 2019 - September 1, 2021Validated enterprise-scale data migration and transformation initiatives, including SAS/DB2 to PySpark-based environments. Developed and executed comprehensive test strategies, plans, cases, and regression suites to ensure functional and non-functional coverage. Performed backend data validation with complex SQL and validated transformation logic and reconciliations. Leveraged Azure DevOps, Git, and CI/CD to support automated testing and streamlined releases. Conducted performance and scalability testing on large datasets, identifying bottlenecks and collaborating with engineering to optimize performance. Worked with stakeholders across business, data engineering, and development teams to ensure acceptance criteria and release readiness.
QA Team Lead at Health of Ontario Pension Plan
October 1, 2010 - June 1, 2019Led a team of 7 QA analysts, overseeing end-to-end testing for pension, HR, and financial systems in a regulated enterprise. Defined QA strategies, frameworks, governance, and ensured compliance with enterprise QA standards. Designed and maintained automation frameworks with Selenium to improve regression coverage. Directed migration of QA environments and assets to Azure Cloud for scalability and efficiency. Planned and executed system integration, regression, UAT, and end-to-end testing across interconnected systems. Performed API testing (Postman, SOAP UI), and designed performance tests (Visual Studio Ultimate). Ensured AODA accessibility compliance and managed defects via JIRA and Azure DevOps. Delivered QA dashboards, metrics, and release readiness reports; supported UAT coordination.
QA Team Lead at Marlborough Sterling (Vertex)
August 1, 2005 - October 1, 2010Led QA for mortgage and insurance applications. Executed end-to-end testing including functional, regression, system integration, and UAT. Implemented performance, load, and stress testing to evaluate scalability and reliability. Built and maintained test automation with QTP/UFT, integrating automation into CI/CD pipelines. Conducted backend data validation with SQL and contributed to Go/No-Go decision-making with risk assessments. Collaborated with project managers, BAs, and developers to ensure alignment with quality objectives; prepared test documentation and supported audits.
Sr. QA Analyst at TD Bank – Marketing Technology Group
July 1, 2019 - September 1, 2021Validated enterprise-scale data migrations and transformations to Azure-based data platforms (Data Factory, Data Lake, Synapse); validated complex data pipeline transformations from SAS/DB2 to PySpark-based environments; performed backend data validation with SQL and reconciliations; leveraged Azure DevOps and Git for CI/CD and automated testing; conducted performance and scalability testing on large datasets; managed defects in HP ALM and Azure DevOps; supported test data management and environment validation; contributed to Agile ceremonies.
Education
Master of Business Administration at Thames Valley University
January 1, 1997 - December 31, 1998Bachelor of Science at Institute of Railway Engineering, Gomel, Belarus
January 1, 1985 - December 31, 1990Master of Business Administration at Thames Valley University, London, UK
January 1, 1997 - January 1, 1998Bachelor of Science at Institute of Railway Engineering, Gomel, Belarus
January 1, 1985 - January 1, 1990Qualifications
Microsoft Team Foundation Server
January 11, 2030 - April 22, 2026IBM Certified Specialist for Rational Test Management and RobotQTP Certification from Mercury (HP)
January 11, 2030 - April 22, 2026Microsoft Team Foundation Server
January 11, 2030 - May 13, 2026IBM Certified Specialist for Rational Test Management and Robot
January 11, 2030 - May 13, 2026QTP Certification from Mercury (HP)
January 11, 2030 - May 13, 2026Industry Experience
Government, Healthcare, Financial Services, Software & Internet, Professional Services
Skills
See more
Hire a QA Engineer
We have the best qa engineer experts on Twine. Hire a qa engineer today.