Lefteris Pantelidakis

Available to hire

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
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Language

Greek, Modern
Fluent
English
Fluent

Work Experience

Backend Web Developer & Prompt Engineer (Content Generation) at Econtent Systems
February 28, 2025 - February 28, 2025
Python (Flask). Creation and training of Virtual Agent using RAG technology (Ollama-Dialogflow CX) for e-commerce.
Backend Web Developer & SEO Expert at e-landingreece
January 1, 2024 - January 1, 2024
Management of tourist properties; Consulting, promotion, and hospitality services for visitors in tourist accommodations. PMS Hotelist & Protel.
Digitization QA Specialist at Iron Mountain
February 28, 2025 - February 28, 2025
Digitization of EFKA archive. Quality control.
Project Manager / Digitization Specialist at Intelli-Solutions
July 31, 2024 - July 31, 2024
Digitization of migration and asylum archive. File preparation, labeling, scanning, quality control, file reconstruction.
Senior Web Developer for Quality Assurance at Kri8itDigital
December 1, 2018 - December 1, 2018
Development of payment gateway (FinTech). Technologies: Python (advanced), PHP6.
IT Network Maintenance Manager at Walmart
November 1, 2016 - November 1, 2016
IT Network Maintenance Manager across three stores.
Founder/Owner – IT Services at Next Century Systems LTD
May 1, 2012 - May 1, 2012
ERP & CRM installation and customization; digitization of archives; DMS; large-scale data entry and archives digitization in multiple sectors.
Backend Web Developer & Prompt Engineer (Content Generation) at Econtent Systems
February 1, 2025 - February 1, 2025
Backend development (Python/Flask) and content generation for e-commerce. Built and trained Virtual Agent using Retrieval-Augmented-Generation (RAG) with Ollama and Dialogflow CX.
Backend Web Developer & SEO Expert / Property Manager at e-landingreece
December 31, 2024 - December 31, 2024
Managed tourist properties; consulting, promotion and hospitality services; implemented PMS Hotelist & Protel; performed backend development and SEO optimization.
Quality Control Specialist at Iron Mountain
February 1, 2025 - February 1, 2025
Digitization of EFKA archive; performed quality control.
Project Manager / Digitization Specialist at Intelli-Solutions
July 1, 2024 - July 1, 2024
Digitization of migration and asylum archive; file preparation, labeling, scanning, quality control, file reconstruction.
Senior Web Developer / QA at Kri8itDigital
December 31, 2018 - December 31, 2018
Development of a FinTech payment gateway; led QA efforts; technologies: Python (advanced), PHP6.
IT Network Maintenance Manager at Walmart, Johannesburg
January 1, 2012 - November 4, 2025
IT network maintenance across three stores; responsible for infrastructure, uptime and IT support.
Founder / Owner at Next Century Systems LTD
May 31, 2012 - May 31, 2012
IT services; ERP/CRM installation and customization; digitization of archives; DMS implementations; large-scale scanning project; digitization for professional associations and law/medical offices.
Backend Web Developer & SEO Expert at e-landingreece
December 31, 2024 - December 31, 2024
Management of tourist properties; consulting, promotion, and hospitality services; backend development; SEO optimization; PMS Hotelist & Protel integration.
Digitization & Quality Control Specialist at Iron Mountain
February 28, 2025 - February 28, 2025
Digitization of EFKA archive; quality control.
Senior Web Developer for QA at Kri8itDigital
December 31, 2018 - December 31, 2018
Development of FinTech payment gateway; QA and senior web development; Python (advanced) and PHP6.
IT Network Maintenance Manager at Walmart
November 30, 2016 - November 30, 2016
IT network maintenance across three stores; ensured uptime and support.
Founder/Owner – IT Services at Next Century Systems LTD
May 31, 2012 - May 31, 2012
Founder/owner delivering ERP/CRM installations, digitization of archives (Entersoft Certified Installer), DMS implementations; led large-scale archival digitization projects (Chania Land Registry and others).
Backend Web Developer & Prompt Engineer (Content Generation) at Econtent Systems, Athens
February 1, 2025 - February 1, 2025
Backend development with Python (Flask) and creation/training of virtual agents using RAG technology (Ollama-Dialogflow CX) for e-commerce.
Backend Web Developer & SEO Expert at e-landingreece, Chania
January 1, 2024 - January 1, 2024
Management of tourist properties; consulting, promotion and hospitality services; Property Management Systems: PMS Hotelist & Protel.
Quality Control Specialist (Digitization of EFKA archive) at Iron Mountain, Athens
February 1, 2025 - February 1, 2025
Digitization of EFKA archive; responsible for Quality Control.
Project Manager (Digitization of migration and asylum archive) at Intelli-Solutions, Chania
July 1, 2024 - July 1, 2024
File preparation, labeling, scanning, quality control, file reconstruction.
Senior Web Developer for Quality Assurance at Kri8itDigital, South Africa
December 1, 2018 - December 1, 2018
Development of payment gateway (FinTech). Technologies: Python (advanced), PHP.
IT Network Maintenance Manager at Walmart, Johannesburg
November 1, 2016 - November 1, 2016
IT network maintenance across three stores.
Founder/Owner – IT Services at Next Century Systems LTD, Athens & Chania
May 1, 2012 - May 1, 2012
ERP & CRM installations, digitization of physical archives (Entersoft Certified Installer), DMS (Docuware, Inforouter, e-Doc). Digitization of Chania Land Registry (approx. 62 million pages) and ~1.2 billion data entry characters. Digitization of archives for Chania Bar Association, Medical Association, and installation of DMS (e-Doc) in multiple professional offices.
Quality Control Specialist - EFKA Archive Digitization at Iron Mountain
February 1, 2025 - February 1, 2025
Digitization of EFKA archive; responsible for quality control.
Project Manager - Digitization of Migration and Asylum Archive at Intelli-Solutions
July 1, 2024 - July 1, 2024
Digitization project: file preparation, labeling, scanning, quality control, file reconstruction.
Senior Web Developer & QA at Kri8itDigital
December 1, 2018 - December 1, 2018
Development of payment gateway (FinTech); senior QA; Technologies: Python (advanced), PHP.
Founder/Owner - IT Services at Next Century Systems LTD
May 1, 2012 - May 1, 2012
ERP/CRM installations, digitization of archives (Entersoft Certified Installer), DMS; large-scale archiving projects (Chania Land Registry: ~62 million pages, ~1.2B data entries) and archiving for professional bodies.

Education

Bachelor in Computer Engineering at Technological Educational Institute of Athens
January 1, 1986 - January 1, 1989
Certificate - JOOMLA CMS at National Technical University of Athens (Multimedia Lab)
January 1, 2012 - June 1, 2012
Certificate - PHP & MySQL at National Technical University of Athens (Multimedia Lab)
January 1, 2012 - June 1, 2012
Online Course - Advanced Content and Strategies for SEO Performance Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Online Course - Website Ranking Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Online Course - Fundamentals of Search Engine Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Online Course - Creating SEO Ranking Reports at University of California, Davis
September 1, 2020 - January 1, 2021
Seminar - Generative AI: Prompt Engineering at Seminars (Generative AI)
August 1, 2024 - September 1, 2024
Seminar - Machine Learning with Python Libraries (TensorFlow, Keras) at Seminars (Machine Learning)
September 1, 2024 - October 1, 2024
Bachelor at Technological Educational Institute of Athens (TEI)
January 1, 1986 - January 1, 1989
Certificate at National Technical University of Athens (NTUA)
January 1, 2012 - June 1, 2012
Certificate at National Technical University of Athens (NTUA)
January 1, 2012 - June 1, 2012
Certificate at University of California, Davis
September 1, 2020 - January 1, 2021
Certificate at University of California, Davis
September 1, 2020 - January 1, 2021
Certificate at University of California, Davis
September 1, 2020 - January 1, 2021
Certificate at University of California, Davis
September 1, 2020 - January 1, 2021
Seminar: Generative AI - Prompt Engineering at Seminar: Generative AI
August 1, 2024 - September 1, 2024
Seminar: Machine Learning with Python Libraries (TensorFlow, Keras) at Seminar: Machine Learning with Python Libraries
September 1, 2024 - October 1, 2024
Bachelor in Computer Engineering at TEI Athens (Technological Education Institute)
January 1, 1986 - December 31, 1989
Bachelor in Computer Engineering (TEI) at Technological Educational Institute of Athens (TEI)
January 1, 1986 - January 1, 1989
Certificate, JOOMLA CMS at National Technical University of Athens (Multimedia Lab)
January 1, 2012 - June 1, 2012
Certificate, PHP & MySQL at National Technical University of Athens (Multimedia Lab)
January 1, 2012 - June 1, 2012
Advanced Content and Strategies for SEO Performance Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Website Ranking Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Fundamentals of Search Engine Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Creating SEO Ranking Reports at University of California, Davis
September 1, 2020 - January 1, 2021
Seminar on Generative AI: Prompt Engineering at Seminar
August 1, 2024 - September 1, 2024
Machine Learning with Python Libraries (TensorFlow, Keras) at Seminar
September 1, 2024 - October 1, 2024
Bachelor in Computer Engineering at TEI Athens (Technological Educational Institute)
January 1, 1986 - January 1, 1989
Certificate at National Technical University of Athens (Multimedia Lab) - JOOMLA CMS
January 1, 2012 - June 1, 2012
Certificate at National Technical University of Athens (Multimedia Lab) - PHP & MySQL
January 1, 2012 - June 1, 2012
Online Course: Advanced Content and Strategies for SEO Performance Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Online Course: Website Ranking Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Online Course: Fundamentals of Search Engine Optimization at University of California, Davis
September 1, 2020 - January 1, 2021
Online Course: Creating SEO Ranking Reports at University of California, Davis
September 1, 2020 - January 1, 2021

Qualifications

Certificate - JOOMLA CMS
January 1, 2012 - June 1, 2012
Certificate - PHP & MySQL
January 1, 2012 - June 1, 2012
Online Course - Advanced Content and Strategies for SEO Performance Optimization
September 1, 2020 - January 1, 2021
Online Course - Website Ranking Optimization
September 1, 2020 - January 1, 2021
Online Course - Fundamentals of Search Engine Optimization
September 1, 2020 - January 1, 2021
Online Course - Creating SEO Ranking Reports
September 1, 2020 - January 1, 2021
Seminar - Generative AI: Prompt Engineering
August 1, 2024 - September 1, 2024
Seminar - Machine Learning with Python Libraries (TensorFlow, Keras)
September 1, 2024 - October 1, 2024
Entersoft Certified Installer
January 11, 2030 - November 4, 2025
JOOMLA CMS Certification
January 1, 2012 - June 1, 2012
PHP & MySQL Certificate
January 1, 2012 - June 1, 2012
Advanced Content and Strategies for SEO Performance Optimization
September 1, 2020 - January 31, 2021
Website Ranking Optimization
September 1, 2020 - January 31, 2021
Fundamentals of Search Engine Optimization
September 1, 2020 - January 31, 2021
Creating SEO Ranking Reports
September 1, 2020 - January 31, 2021
Seminar on Generative AI: Prompt Engineering
August 1, 2024 - September 1, 2024
Seminar on Machine Learning with Python Libraries (TensorFlow, Keras)
September 1, 2024 - October 1, 2024
JOOMLA CMS Certificate
January 1, 2012 - June 1, 2012
PHP & MySQL Certificate
January 1, 2012 - June 1, 2012
Advanced Content and Strategies for SEO Performance Optimization
September 1, 2020 - January 1, 2021
Website Ranking Optimization
September 1, 2020 - January 1, 2021
Fundamentals of Search Engine Optimization
September 1, 2020 - January 1, 2021
Creating SEO Ranking Reports
September 1, 2020 - January 1, 2021
Generative AI: Prompt Engineering
August 1, 2024 - September 1, 2024
Machine Learning with Python Libraries (TensorFlow, Keras)
September 1, 2024 - October 1, 2024
Seminar: Generative AI - Prompt Engineering
August 1, 2024 - September 1, 2024
Seminar: Machine Learning with Python Libraries (TensorFlow, Keras)
September 1, 2024 - October 1, 2024

Industry Experience

Software & Internet, Professional Services, Travel & Hospitality, Retail, Media & Entertainment, Real Estate & Construction, Education, Other