Sotiris S.
Multilingual AI Training Specialist & Customer Service Agent
Resourceful language and content specialist with hands-on experience in RLHF model evaluation, prompt testing, and localized data annotation (Outlier/Scale AI). Fluent in Greek, English, German (C1), and Norwegian (B2), with a proven track record of delivering high QA scores across complex multilingual projects. Professional Customer Care Specialist for international TaskUs company dealing with German and English speaking clients, with experience of over 2 years in the position- and still going. I am a student of the University of Macedonia in my hometown Thessaloniki, Greece, studying International and European Studies. I hold thorough desire to take upon any freelance job opportunity that can be offered, which matches my skills and ambitions.
Earnings and projects
Last 6 months ÷ 3.6 months active (since Jul 2026)
Last 6 months: $2.1k
Billed in all: $2,420$2.4k
$1.1k in the last 6 months
Across 3 contracts
Across 4 contracts
Earnings, last 30 days
Skill rankings: Top 10% in Closed Captioning
Ranked by MRR among everyone on Upwork with the skill.
- #10Bulgarian96 freelancers · 🇬🇷 #1Top 10%🇬🇷#1 of 1
- #21Greek184 freelancers · 🇬🇷 #18Top 11%🇬🇷#18 of 142
- #22Closed Captioning221 freelancers · 🇬🇷 #1Top 10%🇬🇷#1 of 2
- #24Norwegian200 freelancers · 🇬🇷 #1Top 12%🇬🇷#1 of 1
- #36AI Evaluation149 freelancers · 🇬🇷 #2Top 24%🇬🇷#2 of 2
- #252Website Builder1,478 freelancers · 🇬🇷 #1Top 17%🇬🇷#1 of 2
- #261German1,804 freelancers · 🇬🇷 #5Top 14%🇬🇷#5 of 14
- #1,978Translation15,921 freelancers · 🇬🇷 #20Top 12%🇬🇷#20 of 167