Theodoros Sideris

Available to hire

My name is Theodoros Sideris, and I am a Freelancer Translator/Editor/Proofreader/Copy Writer/Subtitler/Interpreter. I have a Ph.D.

About

My name is Theodoros Sideris, and I am a Freelancer Translator/Editor/Proofreader/Copy Writer/Subtitler/Interpreter.
I have a Ph.D. in Chemistry, and a Master of Science (MSc) at the Department of Pharmacy, University of Patras, in the field of Cosmetics.
For the last almost 6 years, I work as a professional translator of scientific texts (Chemistry, Pharmaceuticals, Biology, Medicine, Engineering, Industry, and Software), in particular international patent applications published under the Patent Cooperation Treaty (PCT), as well as in the Bulletin of the Hellenic Industrial Property Organisation. The languages I translate from and into are English, Italian, and Greek.
In the field of Patents, I have collaborated with the University of Patras, the University of Crete, the Diophantus Institute of Technology and Computer Publications (ITYE), and the CERTH (Centre for Research and Technology Hellas).

In addition, I have extensive experience in translating medical subjects (chemical formulae, clinical trials, consent documents, manuals, instructions, medical reports, etc.) into English-Italian-Greek language pairs.
I also work occasionally as an interpreter.
Besides Medical, I have experience in translating technical texts (Mechanical, Engineering, Manuals for instruments and devices, Software, Industrial, and Gaming), but also in other fields such as Marketing, Commerce, and Business.
Finally, I have over eighteen (18) years of (unofficial) experience as a Mentor/Proofreader/Editor in undergraduate and postgraduate theses. The latter includes the translation of numerous scientific publications.

  • 25 years' experience
  • Joined November 2025

Languages

  • Greek, ModernFluent
  • EnglishFluent
  • ItalianFluent

Industry experience

  • Education
  • Healthcare
  • Life Sciences
  • Professional Services
  • Software & Internet
  • Media & Entertainment

Work experience

Freelance Translator · Self-employedJun 2019 – Nov 2025 · 6 yrs 6 mos

Translation and proofreading of texts (scientific, technical, educational, and literary); subtitling; mentoring students; languages supported: EL, EN, IT.

Computer Analyst · INTRACOM S.A., Department of PatrasMay 2000 – Jun 2019 · 19 yrs 2 mos

Update/Upgrade tester; subroutine programming and testing in OPS; solution entry packaging; desk checks of solutions; documentation in Edml, SGML; coordination with Ericsson project teams (MSC PLM, GASUP).

Education

Master of Science (MSc) in Pharmaceutical Sciences and Technology · University of Patras, Department of Pharmacy2016 – 2022
Doctoral degree (PhD) in Chemistry: Redox Reactions of Arsenic Compounds and Study of Bunsen’s disulfide · University of Patras, Department of Chemistry2004 – 2012
Diploma in Chemistry (Specialisation in Food Chemistry) · University of Patras, Department of Chemistry1992 – 2002

Certifications and awards· 9

Certificate of Proficiency in English1999 – 2025
First Certificate in English1995 – 2025
Adequacy in teaching English2000 – 2025
License to Teach English2001 – 2025

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