TL;DR

Annotation And Quality Assurance Specialist (Linguistics): Ensuring high-quality data annotation and rigorous quality assurance for AI and machine learning training datasets with an accent on linguistic analysis and guideline development. Focus on performing detailed data labeling, conducting QA checks, and collaborating with cross-functional teams to maintain data accuracy and consistency.

Location: Hybrid in Sofia, Bulgaria

Company

%hirify_global% provides a platform leveraging machine learning and human intelligence to deliver high-quality, customizable training data for AI systems, serving AI and Fortune 500 companies globally.

What you will do

Perform detailed annotation, labeling, and categorization of diverse data types according to project guidelines.
Conduct thorough quality assurance checks to identify and correct errors and ensure adherence to standards.
Collaborate with product managers, engineers, and researchers across multiple projects.
Contribute to the development and refinement of annotation guidelines using linguistic expertise.
Participate in training and calibration sessions to maintain annotation quality and train new team members.
Become an expert user of the internal annotation platform, reporting bugs and suggesting improvements.

Requirements

Location: Must be able to work hybrid in Sofia, Bulgaria
Bachelor's or Master's degree in Linguistics, Computational Linguistics, Translation, or related field.
Proven experience in data annotation, labeling, or quality assurance in AI/ML environments.
English: Native or near-native fluency required
Strong analytical skills and attention to detail with ability to follow complex documentation.
Comfortable working with software tools, spreadsheets, and web platforms.

Nice to have

Fluency or working proficiency in additional languages such as German, Spanish, French, or Arabic.
Familiarity with programming or scripting (Python) and large-scale data processing.
Experience with NLP, machine learning, or AI data pipelines.

Culture & Benefits

Flexible working schedule with hybrid model allowing office or home work.
Excellent career development opportunities with clear career paths and supervisor support.
Culture of feedback and continuous improvement in a fast-paced AI environment.
International and diverse team with language classes and multiple locations.
Continuous training options including workshops and unlimited Coursera access.
Fun team activities including sports and social events.