Working languages:
English to Spanish
English (monolingual)
English to Finnish

Sergio Guillén - Accelingo S.L.
Native Precision. Global Impact.

Valladolid, Castilla y Leon, Spain
Local time: 08:13 CET (GMT+1)

Native in: Spanish (Variant: Standard-Spain) Native in Spanish, Finnish (Variant: Standard-Finland) Native in Finnish
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17 positive reviews
1 rating (5.00 avg. rating)

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Total: 18 entries
User message
Bridging technical complexity and native cultural resonance for over 15 years. Whether you need high-conversion marketing transcreation, software UI localization, or rigorous technical translation, I deliver publication-ready results on time, every time.
Account type Freelancer and outsourcer, Identity Verified Verified site user
Data security Created by Evelio Clavel-Rosales This person has a SecurePRO™ card. Because this person is not a ProZ.com Plus subscriber, to view his or her SecurePRO™ card you must be a ProZ.com Business member or Plus subscriber.
Affiliations
This person is affiliated with:
Services Translation, Editing/proofreading, Website localization, Software localization, AI + Human review (MT post-editing) , Desktop publishing, Copywriting, Transcreation, Terminology management, Linguistic validation, AI training
Expertise
Specializes in:
IT (Information Technology)Computers: Software
Engineering (general)Automotive / Cars & Trucks
Furniture / Household AppliancesElectronics / Elect Eng
Business/Commerce (general)Marketing
Medical (general)Medical: Instruments
Computers: Systems, NetworksShips, Sailing, Maritime
Computers (general)Computers: Hardware
Nuclear Eng/SciEngineering: Industrial

All accepted currencies Euro (eur)
KudoZ activity (PRO) PRO-level points: 60, Questions answered: 42, Questions asked: 3
Project History 1 projects entered    1 positive feedback from outsourcers

Blue Board entries made by this user  12 entries

Payment methods accepted Wire transfer, Visa, MasterCard
Company size <3 employees
Year established 2013
Currencies accepted Canadian dollars (cad), Euro (eur), Pounds sterling (gbp), U. S. dollars (usd)
Portfolio Sample translations submitted: 14
Glossaries English to Finnish IT Glossary, English to Spanish IT Glossary
Standards / Certification(s) ASTM F2575, ISO 17100:2015, ISO 9001
This company Offers job opportunities for freelancers
Translation education Bachelor's degree - University of Valladolid (Spain)
Experience Years of experience: 21. Registered at ProZ.com: Sep 2010.
ProZ.com Certified PRO certificate(s)
Credentials English to Finnish (University of Helsinki, verified)
English to Spanish (Universidad de Valladolid, verified)
Memberships N/A
Software Across, Adobe Acrobat, Adobe After Effects, Adobe Illustrator, Adobe InDesign, Adobe Photoshop, Adobe Premiere Pro, AutoCAD, Claude, Crowdin, DeepL, DeepL Write, Dreamweaver, FrameMaker, Google Docs, Google Gemini, Google Sheets, Google Slides, Google Translate, Google Translator Toolkit, Idiom, Indesign, memoQ, MemSource Cloud, Microsoft 365, Microsoft Excel, Microsoft Word, OmegaT, Passolo, POEditor, Powerpoint, QA Distiller, QuarkXPress, SDLX, Smartling, STAR Transit, Trados Studio, Transifex, VoxscribeCC, Wordfast, Xbench, XTM

Website Accelingo
CV/Resume CV available upon request
Events and training
Professional practices Accelingo S.L. endorses ProZ.com's Professional Guidelines.
Bio

You have built a standout product, platform, or service. But when expanding into the Spanish-speaking market, direct translation is rarely enough. Literal words don't build trust or drive action—cultural resonance, natural voice, and strategic intent do.
That is where I come in.
I am a native Spanish Copywriter, Transcreator, and Localization Specialist with over 15 years of industry experience. I bridge the gap between creative brand storytelling, technical precision, and search performance.
Unlike generalist linguists, I bring a unique multi-disciplinary background to every project: a Master’s Degree in Engineering (M.Eng.) paired with university-level marketing and finance foundations, plus official certifications in Inbound Marketing (HubSpot) and Paid Search (Google Ads). Whether adapting high-converting ad funnels, complex B2B SaaS interfaces, or print-ready documentation, I ensure your Spanish content feels authentically native and delivers tangible business results.
🚀 Core Areas of Expertise
• Creative Transcreation & Copywriting: Adapting taglines, Meta/Google ads, email funnels, and landing pages to trigger genuine engagement and drive conversions.
• Software, SaaS & App Localization (LQA / UI/UX): End-to-end localization for web and mobile platforms (iOS/Android), strictly preserving string variables, UX layouts, and code integrity (JSON, XML, HTML).
• SEO & Content Optimization: Crafting search-aware blog content, landing pages, and metadata aligned with high-intent search behavior in Spain (ES-ES) and Latin America (es-419).
• Multilingual Desktop Publishing (DTP): Typesetting and formatting directly inside Adobe InDesign to deliver flawless, print-ready layouts with zero overflow or broken formatting.
• Game Localization & Testing: Localizing lore, dialogue, character voice, and in-game UI across PC, mobile, and console titles (1.5M+ words localized).
🎯 Primary Industry Focus
• B2B SaaS, Tech & AI Platforms
• FinTech, Retail Trading & Banking
• Gaming & Interactive Entertainment
• Engineering, Manufacturing & Industrial Tech
• Health, Wellness & Dermocosmetics
🛠️ Tools & Certifications
• CAT & QA: SDL Trados Studio, memoQ, Phrase, Crowdin, XTM, Passolo, Xbench
• Design & DTP: Adobe InDesign, Canva
• CMS & Testing: Sanity, WordPress, TestFlight, Google Play Beta, Jira
• Certifications: Google Ads (PPC) | HubSpot (Content & Inbound Marketing)
Always open to partnering with forward-thinking brands, localization agencies, and product teams seeking a reliable, high-impact linguistic partner.

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