Alexandra Jermolcsenko
AI Data Trainer
Experience
AI Data Trainer
Invisible Technologies
- Evaluating AI-generated outputs for accuracy, relevance and quality
- Providing feedback to improve model performance
- Performing quality assurance checks to ensure data accuracy and compliance with project standards
- Performed quality checks on peer work to ensure consistency and reduce rework
- Acted as point of reference between transcribers and project managers, resolving tickets and clarifying guidelines
- Adjudicated ambiguous cases and documented edge cases to align teams on updates
- Contributed examples and quick-reference notes to improve guideline clarity
- Conducted tests and evaluations to assess new annotators’ readiness and alignment with guidelines
AI Translator & Reviewer
Mercor
- Review and validate AI-generated Russian translations for fluency and accuracy
- Identify unnatural or awkward phrasing and provide more idiomatic alternatives
- Ensure language reflects contemporary usage and norms in Russia
- Spot and correct mistranslations, ambiguity, or tone issues
- Provide structured feedback on linguistic quality and localization
- Work independently and asynchronously to meet deadlines while improving AI model performance
Client Service Representative
Yource Spain
- Handling customer inquiries
- Assisting with online banking and payment transactions
- Identifying sales opportunities and referring to advisors
- Processing customer requests administratively
- Working in accordance with guidelines
Receptionist & Operations Assistant
Intero Integrity Services B.V.
- Handling phone calls
- Receiving and assisting visitors
- Answering questions and scheduling appointments
- Maintaining a professional reception area
- Keeping the engineers' team's trainings/certifications up to date
- Processing visa applications
- Booking flights, hotels, and rental cars
Quality Lab & QA Administrative Assistant
Dutch Protein & Services B.V.
- Collecting and registering samples
- Conducting tests using various lab equipment
- Recording and tracking test results
- Operating and maintaining laboratory instruments
- Consulting with colleagues about abnormal results and finding solutions
- Training and mentoring new staff
- Requesting, processing, and tracking certificates (analysis, allergens, etc.)
- Communicating with suppliers about orders
- Monitoring and recording quarterly processed raw materials, deviations, and corrective actions
Administrative Assistant
Z&Z Logistics
- Scheduling appointments
- Processing incoming emails and mail
- Managing client data
- Internal and external communication
Online English Teacher
English Discussions
- Teaching English to children and adults
- Leading group discussion clubs
English Teacher
Polyglot Learning Center
- Teaching English to children and adults
- Translating fictional texts and legal documents
English Teacher
Globe Language School
- Teaching English to children and adults
Summary
As a Data Annotator, I create and review LLM training data to safety/compliance labeling and factuality checks with corrections. I thrive under tight deadlines and SLAs, adapt quickly to evolving protocols and guidelines, and work smoothly in fully remote, asynchronous teams across time zones. I often serve as a QA reviewer and liaison, resolving ambiguity, triaging tickets, and aligning PMs and raters to ensure consistent outputs.
Specialist in advanced multilingual translation projects and linguistic evaluation of artificial intelligence models, focused on optimizing translation quality, semantic disambiguation, terminological accuracy, and culturally and contextually appropriate localization, with a strong emphasis on the reliability, coherence, and functional precision of AI-generated outputs.
Skills
- Microsoft Office Suite (Word, Excel, Powerpoint, Access, Outlook)
Languages
Education
National Linguistic University, Kyiv
Master’s degree in Translation / Interpretation & English Philology · Translation / Interpretation & English Philology · Kyiv, Ukraine
Similar Freelancers
Discover other experts with similar qualifications and experience