Олександр

Oleksandr Kravchuk
SUMMARY

Quality Assurance Specialist in AI data annotation. Focused on
improving data quality and ensuring high annotation standards across
image, video, and 3D projects. Known for refining unclear guidelines,
validating annotation logic, and building custom Google Sheets tools
for quality tracking.

SKILLS

Jira SDLC / STLC process Data QC TestCaseLab Test design
CONTACTS
Bug reports Test Documantation Google Sheets SCRUM
Location
TestRail GIT GitHub HTML DevTools VS Code C#
Lutsk, Volyn Oblast, Ukraine

WORK EXPERIENCE Email
[open contact info](look above in the "contact info" section)
Quality Assurance | Keymark 03.2025 – 07.2025
Phone
Transitioned to QA Specialist in AI data annotation, responsible for quality
[open contact info](look above in the "contact info" section)
assurance across diverse multimodal projects (Video, Image, 3D, LiDAR),
often handling 14+ active simultaneously. Conducted both initial and Telegram
recurring QA checks on datasets delivered by operations teams. Focused on https://t.me/Lutheniq
improving data quality by validating project configurations, clarifying client
LinkedIn
instructions, and reducing annotation errors. Ensured consistently high
[open contact info](look above in the "contact info" section)
data quality across all assigned projects. Actively supported POC phases by
delivering accurate results under tight deadlines, contributing to client
trust. As one of the first QA specialists in the company, played a key role in
shaping foundational workflows, internal documentation standards, and
building custom QA tools using Google Sheets formulas, Jira, and internal
company tools and platforms to support performance tracking and quality
control. Experienced in working with KeyLabs, CVAT, and Segments
annotation platforms.

AI Data Annotator | Keymark 11.2024 - 03.2025

Worked on the company’s KeyLabs platform, consistently ranked in the top
performance category. Maintained excellent speed and accuracy, regularly
exceeding productivity targets by 20% to sustain top-tier status.
Demonstrated strong adherence to annotation standards and deadlines.
Progressed from data annotation to verification of processed datasets,
ensuring quality and consistency before delivery.

COURSES AND EDUCATION

Qa Manual | Hillel It School
During my studies, I created test cases and described bug reports in JIRA,
gaining skills in defect management. I analyzed requirements in Confluence and
wrote other test documentation (checklists, test plans). I used various test
design techniques, ensuring comprehensive coverage. Led a team that
identified the most defects among all teams. I understand SDLC/STLC and
Scrum principles, and have basic knowledge of HTML, CSS, Git, and GitHub.
https://certificate.ithillel.ua/view/80961958

C# Basic | Hillel It School
During this course, I gained a solid foundation in C# programming and the .NET
platform. I learned how to set up development environments, including Visual
Studio and Git for version control. Key topics covered included data types,
loops, operators, and arrays
https://certificate.ithillel.ua/view/97438599