30 years in Translation business: Law, EU content, Business, Finance, Marketing, IT, Health, Localization, Technical field, etc. Your best choice for high-definition translation in English to Serbian/Bosnian/Croatian combination - you will get what you pay for! Reliable, professional and creative with successful background in the role of translator, proofreader, subtitler, transcriber and voice-over. Specialized reviewer in various fields.
Document Review
Financial Translation
Proofreading
Official Documents Translation
Translation
Legal Translation
Content Localization
General Transcription
English to Croatian Translation
English to Serbian Translation
English to Bosnian Translation
Valentina D.
Pancevo, Serbia
$25/hr
5.0
137 jobs
If you're an author or publisher who needs editing that respects your work, a company that needs accurate, well-presented transcripts, an author, publisher, or business that needs flawless SR-EN or EN-SR translation, or you simply want a human with a strong content-writing background to review AI-generated text, I might be the right person for the job.
Polishing a manuscript and proofreading a business transcript require different skill sets, but I've spent a decade building both. On the literary side, I hold an MA in Philology, Literature, and Literary Theory, and I've spent ten years editing for authors and publishers — developmental editing, line editing, copy editing, proofreading, beta reading, blurbs, and book summaries. Writing hundreds of summaries for Amazon publishers gave me an unusually close read on how successful books are structured and why they work, and years of writing SEO content for tech and language-learning companies gave me a working knowledge of discoverability I still apply when editing.
On the technical side, I've spent the past year and a half as a transcript proofreader and fact-checker for AlphaSights, reviewing AI-generated transcripts of expert conversations across technical and nontechnical fields, against a strict internal style guide. I'm bilingual in English and Serbian and have completed a number of translation, QA, and LLM-training projects in both languages.
I've also spent the last five years working inside AI systems — training, evaluating, and rewriting model outputs for enterprise clients. That gave me a precise eye for what AI-assisted writing looks and sounds like at the sentence level: the false coherence, the hedged phrasing, the subtle flatness careful readers sense even when they can't name it. If your draft needs to sound human (or sound like you), I know how to get it there.
I've been on Upwork for over a decade, completed 100+ projects, and maintain a 100% Job Success Score as a Top Rated freelancer. I take editorial work seriously, and I bring the same rigor to transcripts and translations. I prefer working with clients who care about getting it right.
What I offer:
- Developmental editing, line editing, copy editing, and proofreading for fiction and nonfiction manuscripts
- Editing and humanizing AI-assisted drafts
- Book summaries, blurbs, and critical analysis
- Proofreading, fact-checking, and QA for AI-generated transcripts
- Translation and editing in English and Serbian
- Manuscript formatting
SEO Writing
Synopsis Writing
Copywriting
Content Writing
Blog Writing
Article Writing
Creative Writing
Fact-Checking
Audio Transcription
Proofreading
AI Fact-Checking
AI Content Editing
Line Editing
Serbian
English
Editing & Proofreading
Book Editing
Copy Editing
Developmental Editing
Content Editing
Vasja S.
Belgrade, Serbia
$60/hr
4.9
60 jobs
I’m a 100% human narrative designer, game writer, screenwriter, and creative consultant with an MA in film and video game storytelling. For almost a decade, I’ve worked in games, film, television, and digital media, creating worlds, characters, and stories while constantly learning new tools and staying passionate about my craft.
My background sits somewhere between a lifelong gamer and a film‑obsessed writer who likes things to make both emotional and structural sense. I’ve written for mobile and PC games played by millions, built narrative scenarios for AI research, scripted films and TV shows, and created various kinds of content for global platforms.
Core strengths:
• Narrative design & story systems
• Game writing & interactive dialogue
• Worldbuilding, lore & character development
• Mission/level narrative & branching structures
• Scriptwriting for games, film & digital media
• Editorial & content writing for digital platforms
• Creative consulting & concept development
• Cross‑functional collaboration with designers, PMs & engineers
Video Game Writing
Game Design Document
Copywriting
Video Commercial
Screenwriting
Fiction Writing
Narrative
Creative Writing
Writing
Film Screenplay
Game Development
Game Design
Storytelling
Masafumi M.
Belgrade, Serbia
$78/hr
5.0
70 jobs
Something is broken in a lot of online businesses right now.
And most operators are looking for the problem in the wrong place.
Costs per acquisition keep climbing despite more creative testing.
Customers don’t come back.
Margins compress.
And the numbers stop making sense.
If that sounds familiar, some of these probably do too:
- Testing more angles and formats, but every ad is still saying the same unclear thing underneath
- Ad hooks say one thing, landing page says another, email sequence says something else entirely
- Sending cold traffic straight to the offer with nothing in between to build belief before the ask
- Speaking to female prospects using aggressive direct response copy and wondering why they don’t buy
- Churning and burning buyers instead of turning them into loyal, high-LTV customers
Every one of these traces back to the same root cause:
The lack of a properly built messaging foundation.
Without a robust foundation, everything on top of it suffers… and you can’t solve it by testing more creatives, spending more on media, or even using seemingly high-converting direct response copy that actually deceives rather than truly persuades the reader.
This is where I come in.
Hi, I'm Masa, a direct response strategist and copywriter. I trained under Kim Krause Schwalm and Ning Li. Two of the sharper minds in direct response marketing.
I build from the messaging foundation up: identifying your best customers, the core belief your funnel needs to create in them, and the copy architecture that consistently takes them from cold stranger to loyal buyer.
That attracts customers who actually stick, which is where CPA, AOV, and LTV start moving in the right direction simultaneously.
More specifically, I:
- Build the messaging foundation for your funnel architecture before writing a single word of copy
- Craft assets that move your audience from where they are to where they need to be without hype or force
- Maintain regulatory compliance for ethical and practical reasons, which helps build trust and reduce refund rates
- Write differently for female buyers, because female buyers think differently, which sounds obvious but most direct response copywriters overlook (most copy I see uses aggression and urgency as levers… female buyers respond better to clarity and social proof)
- Warm up cold traffic before the ask by shifting their beliefs, so your offer pages convert the way they should
- Think in CPA, AOV, and LTV, not just front-end conversion
The copy formats I work in:
- Ads (static and video scripts)
- VSLs
- Advertorials
- Landing and sales pages
- Email sequences
- Upsell and funnel copy
- Creative briefs
--
Reviews:
“I’m a former super affiliate and ran dozens of campaigns and worked with many copywriters. Masa is the best one! You won't find a better one. He writes and it will convert.” - from Dynh, former super affiliate, marketing agency owner, and guest instructor on native ads in Stefan Georgi’s RMBC 2
"Working with Masa was an amazing experience. He thinks strategically about copy and makes sure it's aligned to your business goals and converts." - from Ivan, CMO of an online business led by an influencer with 1M+ Instagram followers
--
I only work with honest businesses that have proven offers worth buying.
If you’ve read so far nodding along, please send a message with specifics about 1) your business, 2) your needs, and 3) your current challenge.
If we're a fit, we'll map out the work and scope the project. If we're not, you'll at least have a clear diagnosis of where the biggest leverage is.
Masa
P.S. A couple of personal things about me:
- I hold a black belt in Brazilian Jiu Jitsu with 24 years of training experience on the mat.
- I majored in analytic philosophy, which demands clear, precise logic and arguments, sometimes to argue against people who believe they might be dreaming right now.
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