Stanislav S.-Data Annotator
Check rate
Experience
Data Annotator
Highbrow Technology Inc.
- Annotate and evaluate mathematics content in Ukrainian, Russian, and English languages
- Solve and analyze unsolved problems using basic high school–level mathematics
- Work with various math topics, including Calculus, Algebra and Functions, Data, Statistics, and Probability, and Geometry & Structured Images
- Analyze tables, quantitative diagrams, infographics, and image-based documents to create high-quality and engaging math questions
- Maintain accuracy, clarity, and detail in all annotations and question QA development
- Collaborate with an international team to ensure content meets educational standards
- Use skills in RLHF on Turing platform, critical thinking, time management, data annotation, and Google Sheets
Language Annotator
Highbrow Technology Inc.
- Analyze and label linguistic data such as text, audio, or speech according to project guidelines
- Identify and correct grammatical, syntactic, and semantic errors
- Evaluate and annotate language content to train and improve AI and NLP models
- Follow detailed instructions and maintain high annotation accuracy and consistency
- Collaborate with team members and provide feedback to enhance annotation quality
Operator Assistant II – Cementing
Halliburton
- Assisted in rigging-up/rigging-down, equipment inspections, and preventive maintenance
- Performed pre-job calculations (volumes, pressures, capacities) and prepared technical documentation
- Executed cementing and plug jobs, including pressure testing (up to 15,000 PSI)
- Ensured compliance with safety standards and accurate reporting
Driller Assistant (First)
Smith Ukraine
- Assisted in rigging-up and rigging-down of rig equipment
- Performed general repairs and maintenance on significant and minor rig components
- Assisted with mud-mixing duties
- Performed catching samples, used tongs, slips, and chain to connect and disconnect drilling pipe, tubular, and drilling bits or tools
- Checked hoist lines and ropes for blocks
Data Annotator
Appen CrowdGen
- Evaluated the quality of potentially unethical or unsafe LLM model prompts and responses translated into Russian
- Assessed translation quality and how well the model deflects unsafe material while remaining relevant to the prompt
Data Annotator
Appen CrowdGen
- Performed short video annotation for language identification (LID)
- Classified languages in titles, hashtags, subtitles (OCR), and audio (ASR)
- Delivered overall language prediction with 95%+ accuracy
- Applied data privacy and discard rules to sensitive content
- Followed SOP processes: moderation, QA, and calibration
- Worked with Russian and mixed-language video content, including dialects
Data Annotator
Appen CrowdGen
- Transcribed short Russian audio with a tagging system (e.g., , , , )
- Marked invalid cases (#NG) and ensured quality per guidelines
- Followed rules for numbers, abbreviations, and borrowed words
Data Annotator
MAI OCR
- Annotated images containing English and Russian words with bounding boxes at word, line, and paragraph levels using SRT HALO tool
- Transcribed printed and handwritten text with high accuracy, preserving case, accents, and special characters
- Identified languages per word and flagged illegible or unknown scripts
- Differentiated between overlaid and scene text to improve OCR training data quality
- Ensured consistency by correcting pre-annotations and following rejection criteria
Data Annotator
RWS Workzone
- Annotated and validated 10,000+ Ukrainian text samples for dialect identification in GenAI datasets
- Corrected system-predicted language labels, including handling Romanized variants and unsupported dialects
- Applied quality standards to reject non-linguistic content (e.g., gibberish, hashtags, proper nouns)
- Ensured accuracy and consistency of annotations across multiple dialects and scripts
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Energy, Education, and Information Technology.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Operations and Quality Assurance.
Skills
- Solid Experience With Rlhf On Turing Platform.
- Critical Thinking
- Time Management
- Prompt Evaluation
- Problem-Solving Mindset
- Attention To Detail
- Data Annotation
- Transcription
- Rlhf
- Qa
- Ocr
- Google Sheets
- Ms Office
- Excel
- Solve And Analyze Unsolved Problems Using Basic High School–Level Mathematics.
- Work With Various Math Topics, Including Calculus, Algebra And Functions, Data, Statistics, And Probability, Geometry & Structured Images.
Languages
Education
Ivano-Frankivsk National Technical University of Oil and Gas
Master of Mining Engineering (Well Drilling) · Mining Engineering (Well Drilling) · Ivano-Frankivsk, Ukraine
Ivano-Frankivsk National Technical University of Oil and Gas
Bachelor of Mining · Mining · Ivano-Frankivsk, Ukraine
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Stanislav is based in Lviv, Ukraine.
Stanislav speaks the following languages: Russian (Native), Ukrainian (Native), English (Advanced).
Stanislav has at least 5 years of experience. During this time, Stanislav has worked in at least 4 different roles and for 3 different companies. The average length of individual experience is 1 year and 4 months. Note that Stanislav may not have shared all experience and actually has more experience.
Based on recent experience, Stanislav would be well-suited for roles such as: Data Annotator, Language Annotator, Operator Assistant II – Cementing.
Stanislav's most recent position is Data Annotator at Highbrow Technology Inc..
In recent years, Stanislav has worked for Highbrow Technology Inc. and Halliburton.
Stanislav is most experienced in industries like Energy, Information Technology, and Education.
Stanislav is most experienced in business areas like Operations, Quality Assurance, and Research and Development.
Stanislav holds a Master in Mining Engineering (Well Drilling) from Ivano-Frankivsk National Technical University of Oil and Gas and a Bachelor in Mining from Ivano-Frankivsk National Technical University of Oil and Gas.
The availability of Stanislav needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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