Alexandra Jermolcsenko

AI Data Trainer

Alexandra Jermolcsenko
Mislata, Spain

Experience

Jan 2025 - Present
1 year 1 month

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
Jan 2025 - Present
1 year 1 month

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
Jan 2025 - Present
1 year 1 month
Valencia, Spain

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
Jan 2023 - Dec 2025
3 years
Tricht, Netherlands

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
Jan 2019 - Dec 2023
5 years
Tiel, Netherlands

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
Jan 2018 - Dec 2019
2 years
Tiel, Netherlands

Administrative Assistant

Z&Z Logistics

  • Scheduling appointments
  • Processing incoming emails and mail
  • Managing client data
  • Internal and external communication
Jan 2017 - Dec 2017
1 year
Mukachevo, Ukraine

Online English Teacher

English Discussions

  • Teaching English to children and adults
  • Leading group discussion clubs
Jan 2014 - Dec 2016
3 years
Mukachevo, Ukraine

English Teacher

Polyglot Learning Center

  • Teaching English to children and adults
  • Translating fictional texts and legal documents
Jan 2012 - Dec 2013
2 years
Mukachevo, Ukraine

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

Russian
Native
Ukrainian
Native
English
Advanced
Spanish
Advanced
Dutch
Advanced

Education

Sep 2008 - Jun 2014

National Linguistic University, Kyiv

Master’s degree in Translation / Interpretation & English Philology · Translation / Interpretation & English Philology · Kyiv, Ukraine

Need a freelancer? Find your match in seconds.
Try FRATCH GPT
More actions

Similar Freelancers

Discover other experts with similar qualifications and experience

Ana belén López vilella
Ana belén López vilella

Freelance AI & Linguistic Consultant

View Profile
Lucrezia Pacini
Lucrezia Pacini

AI Conversational Writer

View Profile
Riccardo Aita
Riccardo Aita

Voice AI Trainer & Audio Transcriber

View Profile
Margarita Castillo cardona
Margarita Castillo cardona

Customer Support Specialist & Student Guidance

View Profile
Diego Lazo
Diego Lazo

Freelance Spanish Transcriptionist

View Profile
Alexandra Rodríguez
Alexandra Rodríguez

Data Annotator

View Profile
Lisa Appi
Lisa Appi

Freelance Content and Localization Expert

View Profile
Isabel Boubayona
Isabel Boubayona

Editorial Consultant, Content Analyst

View Profile
Estelle Kamwa
Estelle Kamwa

Document Management / Document Controlling Specialist

View Profile
Cornelia Rauchberger
Cornelia Rauchberger

AI Trainer

View Profile
Stanislav Shaschuk
Stanislav Shaschuk

Data Annotator

View Profile
Sandra Schwandt
Sandra Schwandt

Creative Script Writer & Bilingual AI Linguist, German

View Profile
Ioanna Vavitsa
Ioanna Vavitsa

Candidate Relationship Manager

View Profile
Giovanna Quaglio
Giovanna Quaglio

Quality Assurance Analyst

View Profile
Giulio Scimone
Giulio Scimone

Operations Quality Assurance

View Profile
Elisa Festi
Elisa Festi

Freelance Italian Language Specialist

View Profile
Alexandra Jordanides
Alexandra Jordanides

Plant Manager

View Profile
Robert Sanasi
Robert Sanasi

Ai Tutor – Bilingual English/Italian

View Profile
Georgia Vavitsa
Georgia Vavitsa

Team Lead

View Profile
Vanessa Monti
Vanessa Monti

AI Trainer

View Profile
Yağız Yıldız
Yağız Yıldız

Data Annotator

View Profile
Angelica D'achille
Angelica D'achille

Mediation Trainee

View Profile
Chisato Fujimoto
Chisato Fujimoto

Freelance AI Data Projects

View Profile
Robin Lindgren
Robin Lindgren

AI Tutor & Chemistry/Biology Specialist

View Profile
Izumi Taneda
Izumi Taneda

Japanese Translator, Annotator

View Profile
Asia Polo
Asia Polo

Translation Project Manager

View Profile
Polina Poluyko
Polina Poluyko

Document Manager

View Profile
Abdelkoddouss Belayachi
Abdelkoddouss Belayachi

Project Lead / Contributor Lead

View Profile
Ahmed Shawky
Ahmed Shawky

AI Linguistic / Language Contributor – German & Arabic

View Profile
José maría Pacheco benítez
José maría Pacheco benítez

DNA and Data Analyst

View Profile