With over 12 years and 15,000 hours of freelancing experience, I specialize in localization, linguistic QA, and multilingual language data workflows, with a particular focus on Bulgarian-English projects.
Over the past decade, I’ve worked across software localization, technical and legal translation, structured content environments, and long-term operational support for international clients. My work combines linguistic precision with an understanding of how language functions inside real systems, platforms, and workflows.
Alongside my freelance work, I am currently completing an MA in Language and Mind: Linguistics and Cognitive Science, with a research focus on computational linguistics, language modeling, and rule generalisation in LLMs.
My areas of work include:
• Software and website localization
• Linguistic QA and validation
• Bulgarian-English language data annotation
• AI output evaluation and RLHF-related workflows
• Terminology and consistency management
• Structured multilingual content operations
• Annotation guidelines and quality review
I am particularly interested in high-context linguistic tasks that require ambiguity reduction, consistency, and careful handling of morphological and syntactic nuance.
Clients value my work for its reliability, precision, and long-term maintainability, not just speed or volume.
Translation & Localization Software
Content Localization
Software Localization
Translation
English to Bulgarian Translation
Bulgarian to English Translation
Linguistics
Daniela K.
Sliven, Bulgaria
$15/hr
5.0
18 jobs
I specialize in English-Bulgarian translation, proofreading, localization, and AI translation review. I have a BA in English Philology and an MA in Anglophone Studies, and I’ve worked on websites, apps, dictionaries, educational content, and AI-generated translations.
I also have experience with AI-related language work, including prompt writing, AI output review, and QA.
Experience:
- Translation of a PDF app, available online for
Bulgarian users
- Cryptocurrency website content translation
- Proofreading English-Bulgarian and Bulgarian-
English dictionaries for Oxford University Press
- Educational and teaching content for apps,
schools, and online learning platforms
- Official document translation: Apostille Stamp,
Birth Certificate, Change of Name Certificate,
Death Certificate, Digital National Police
Certificate, Marriage Certificate, National Police
Certificate, Passport, Register of Births
- Content for TV and internet service websites
- AI translation review and quality assurance
- Website and software localization
Localization
Legal Translation
Mobile App Localization
Website Localization
Medical Translation
Proofreading
Translation
Website Translation
Article Writing
English to Bulgarian Translation
Bulgarian to English Translation
Website Content
AI Content Editing
Editing & Proofreading
Copy Editing
Machine Translation
Grammar & Syntax Review
Linguistics
AI Model Training Prompt
AI Content Writing
Andrea K.
Shumen, Bulgaria
$20/hr
4.8
138 jobs
Helping businesses, publishers, startups, and content creators communicate naturally across languages and cultures.
I am a multilingual language professional with 14+ years of experience in translation, localization, content creation, education, customer communication, and international projects. I combine linguistic precision, creativity, and AI-enhanced workflows to deliver content that is accurate, engaging, and tailored to the target audience.
My Services
🌍 Translation & Localization
✔ English ↔ Slovak
✔ English ↔ Czech
✔ English ↔ Bulgarian
✔ Website & App Localization
✔ E-commerce Localization
✔ Marketing & UX Localization
✔ MTPE (Machine Translation Post-Editing)
✔ Localization QA & LQA Reviews
✍️ Content Writing & Editing
✔ SEO Articles & Blog Posts
✔ Website Content
✔ Product Descriptions
✔ Landing Pages
✔ Email Marketing Content
✔ Social Media Content
✔ Proofreading & Editing
✔ AI Content Humanization
🤖 AI & Language Services
✔ AI Training Data Creation
✔ AI Content Evaluation
✔ Prompt Optimization
✔ Fact-Checking & Review
✔ AI-generated Content Editing
✔ LLM Response Evaluation
✔ Annotation & Data Labeling
📚 Publishing & Literary Services
✔ Beta Reading
✔ Manuscript Feedback
✔ Book Reviews
✔ Plot & Character Analysis
✔ Sensitivity and Readability Feedback
✔ Fantasy, Romance, Romantasy & Young Adult Literature
🎓 Education & Training
✔ Educational Materials
✔ Worksheets & Lesson Plans
✔ English Learning Resources
✔ Interactive Learning Games
✔ Course Content Development
💼 Professional & Business Documents
✔ CV & Resume Writing
✔ LinkedIn Profiles
✔ Cover Letters
✔ Business Correspondence
✔ Presentations
🖥️ Digital Skills
✔ WordPress Content Management
✔ Content Upload & Formatting
✔ Basic SEO Optimization
✔ Canva
✔ Microsoft Office Suite
✔ Google Workspace
✔ CRM & Customer Support Platforms
Why Clients Hire Me
⭐ 10+ years of professional experience
⭐ Native-level Slovak and Czech proficiency
⭐ Strong command of Bulgarian and English
⭐ Detail-oriented and deadline-driven
⭐ Fast communication and reliable delivery
⭐ Experience with medical, educational, legal, technical, e-commerce, and marketing content
⭐ Able to combine human expertise with modern AI tools for efficient, high-quality results
I have worked with international clients, publishers, educational organizations, NGOs, and businesses, helping them translate, localize, edit, publish, and improve content for global audiences.
Whether you need flawless translation, engaging content, AI-assisted editing, WordPress support, or a dedicated beta reader, I am ready to help bring your project to life.
Let's work together and create content that truly connects with your audience.
Medical Translation
Technical Translation
Translation
Bulgarian to English Translation
Czech to English Translation
English to Bulgarian Translation
Creative Writing
Content Writing
Bulgarian
Slovak
SEO Writing
Slovak to English Translation
English to Czech Translation
SDL Trados
Kiril K.
Plovdiv, Bulgaria
$40/hr
5.0
3 jobs
I’m an experienced Project Manager and Localization Specialist with a strong background in client relations, process optimization, and multilingual project delivery. Over the years, I’ve worked across the localization, technology, and customer experience sectors, managing cross-functional teams and ensuring high-quality results for global clients.
What I do best:
Project & Operations Management: I oversee end-to-end project lifecycles — from planning and resource allocation to execution, delivery, and client satisfaction.
Localization Expertise: I’ve managed translation and localization projects in multiple languages, coordinating with linguists, vendors, and tech teams to deliver consistent, culturally adapted content.
Client Success & Communication: I take pride in building strong relationships, understanding business needs, and translating them into effective, scalable solutions.
Desktop Publishing (DTP): I have hands-on experience in preparing and formatting multilingual materials across various file types and layouts, ensuring design consistency and visual accuracy in localized content.
I’m passionate about combining structure with creativity — finding efficient ways to make global collaboration smoother, smarter, and more impactful. Whether it’s improving workflows, mentoring team members, or ensuring client success, I’m driven by continuous learning and excellence in everything I do.
Localization
Marketing Localization
Translation & Localization Software
Content Localization
Website Localization
Project Management
Desktop Publishing
Document Localization
Subtitle Localization
Veselin B.
Plovdiv, Bulgaria
$25/hr
4.3
45 jobs
Top Rated Plus Freelancer - 3% on UpWork ⭐
Hi 🤝 I'm Veso!
Native Bulgarian expert translator with solid experience in AI and SaaS content. I will make your texts sound natural and easy to read in BG.
📃My services:
EN ↔ BG Translation & Localization
AI Content & Linguistic Evaluation
Machine Translation Post-Editing (MTPE)
UX/UI & App Content
Proofreading & Editing
📣 Digital Marketing Services:
Organic growth & content strategy
Social media publishing & optimization
Performance analysis & reporting
Trend research & hashtag strategy.
📈 Generated 81M+ organic reach for Trendyol Bulgaria in 3 months. Ran many successfull campaigns.
Certified Digital Marketing Manager.
Why work with me:
⭐Top Rated+ · 100% JSS · 4.9 rating
✅ 36 completed projects · 28 five-star reviews
✅ 10+ years of experience across diverse industries
🤝Let's work together
Localization
Marketing Localization
Web App Localization
Content Localization
Mobile App Localization
Website Localization
Software Localization
Translation
English to Bulgarian Translation
Editing & Proofreading
AI Content Editing
AI Platform
Data Annotation
Machine Translation
Content Editing
Bulgarian to English Translation
AI Content Writing
Linguistics
Gergana G.
Sofia, Bulgaria
$30/hr
5.0
7 jobs
Hi there! I'm a Bulgarian native speaker who's spent the last year+ deep in the world of English↔Bulgarian translation and localization quality — and honestly, I love this work! Before that, I spent 9 years in corporate quality management, so checking things carefully and consistently is just how my brain works at this point.
Here's what I can help you with:
- English↔Bulgarian translation — product content, websites, marketing copy
- Linguistic Quality Assurance (LQA) — spotting errors, classifying severity, scoring quality
- Machine Translation Post-Editing (MTPE) and MT output evaluation
- Auditing and improving translation quality on existing content
- Reviewing localized websites and e-commerce content
A bit about how I work:
Most translators will catch a wrong word. I'm more likely to notice why it keeps happening — because for 9 years, finding patterns in quality issues was literally my job before it became something I do for love of language. At iHerb, this meant working hands-on with machine translation output, scoring translations against quality rubrics, and helping improve product and website content at scale, not just polishing one document at a time.
I also come from a marketing/SEO background, which turns out to be genuinely useful in localization — I can tell when a "technically correct" translation just won't land with local readers, and I know how to make content feel natural while still doing its job (whether that's converting a sale or ranking well in search).
And on top of all that, I've also gotten to work hands-on training and evaluating AI language models, which gives me a nice behind-the-scenes understanding of how MT actually learns — something that comes in handy every time I'm post-editing or scoring.
A little more about me:
- Top Rated Plus freelancer
- 100% Job Success Score
- Bachelor's degree, plus a background in English-language pre-school education
- 9 years in corporate quality management
- 1+ year of EN-BG translation/LQA/MTPE work for iHerb
- Hands-on experience training and evaluating AI language models
If you need someone who cares as much about consistency and quality as they do about language itself, I'd love to hear about your project!
Kind regards,
Gerry Georgieva
Localization
Marketing Localization
SEO Localization
Localization Testing
Content Localization
Website Localization
Translation
Website Translation
Bulgarian
English to Bulgarian Translation
Bulgarian to English Translation
Linguistics
Quality Assurance
Machine Translation
AI Model Training
Editing & Proofreading
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