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Ioannis (John) Tsioumpris

Available to hire

Hi, I’m Ioannis (John) Tsioumpris. NET.

About

Hi, I’m Ioannis (John) Tsioumpris. I’m a software developer with 20+ years of experience designing and implementing tailored solutions using Microsoft Access, Python (including ML/DL), SQL, and .NET. I enjoy solving complex problems where solutions don’t exist yet, leveraging AI/ML, automation, and creative coding to deliver practical, user-friendly tools. I’ve tackled projects like emulating MS Access continuous forms in WinForms and PyQt, building predictive models on live data, and creating custom remote desktop solutions.

I’m committed to writing modular, maintainable, and future-proof code. I embrace modern tooling, including AI-assisted development, to accelerate delivery while ensuring human verification and alignment with your goals. I thrive in collaborative environments and enjoy turning ambitious ideas into reliable, scalable solutions that users love to work with.

  • 10 years' experience
  • Joined October 2025

Languages

  • Greek, ModernFluent
  • EnglishAdvanced

Industry experience

  • Software & Internet
  • Professional Services
  • Manufacturing
  • Media & Entertainment
  • Computers & Electronics

Work experience· 6 roles

IT Supervisor · D.A.M.TJan 2020 – Nov 2025 · 5 yrs 11 mos

Develop applications and IT solutions for administration; provide user support.

IT Supervisor · D.A.M.T Thessaloniki IT DepartmentJan 2020 – Present · 6 yrs 11 mos

In charge of developing applications and providing solutions for IT Administration; provides user support.

IT Personnel · KLEFER S.A.Dec 2017 – Dec 2017 · 1 mo

Maintained/upgraded core MS Access application and IT infrastructure; led ERP/HR systems; recognized for top user experience.

IT Personnel · KLEFER S.A. – Industrial Area of KilkisJan 2017 – Oct 2025 · 8 yrs 10 mos
Freelancer · Freelancer - Global ClientsJan 2016 – Nov 2025 · 9 yrs 11 mos
Freelancer · Various clients around the worldJan 2016 – Present · 10 yrs 11 mos

Education

MSc AI & Web Technologies · International Hellenic University2022 – 2024
BSc Computer Science · Hellenic Open University2009 – 2015
BSc Electrical Engineering · Piraeus University of Applied Science1989 – 1996

Certifications and awards· 5

MSc in AI & Web Technologies2030 – 2025
BSc Computer Science2030 – 2025
BSc Electrical Engineering2030 – 2025
Top Distinguished Expert in Microsoft Access on Experts-Exchange2030 – 2025

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