Athanasios Iliopoulos - Drupal Developer & Consultant

Q: Where is Athanasios based?

Athanasios is based in Heraklion, Greece .

Q: What languages does Athanasios speak?

Athanasios speaks the following languages: Greek (Native), English (Advanced) .

Q: How many years of experience does Athanasios have?

Athanasios has at least 19 years of experience. During this time, Athanasios has worked in at least 5 different roles and for 5 different companies . The average length of individual experience is 3 years and 3 months . Note that Athanasios may not have shared all experience and actually has more experience.

Q: What is Athanasios's latest experience?

Athanasios's most recent position is Drupal Developer & Consultant at Freelancer .

Q: What companies has Athanasios worked for in recent years?

In recent years, Athanasios has worked for Freelancer , MS POS GmbH , and MRICONS Ltd. .

Q: Which industries is Athanasios most experienced in?

Athanasios is most experienced in industries like Tourism and Hospitality , Information Technology (IT) , and Healthcare . Athanasios also has some experience in Retail , Banking and Finance , and Transportation and Logistics .

Q: Which business areas is Athanasios most experienced in?

Athanasios is most experienced in business areas like Information Technology (IT) , Product Development , and Project Management . Athanasios also has some experience in Business Intelligence and Research and Development (R&D) .

Q: Which industries has Athanasios worked in recently?

Athanasios has recently worked in industries like Tourism and Hospitality , Information Technology (IT) , and Retail .

Q: Which business areas has Athanasios worked in recently?

Athanasios has recently worked in business areas like Information Technology (IT) , Product Development , and Project Management .

Recommended expert

Heraklion, Greece

Experience

Mar 2023 - Jul 2024

1 year 5 months

Drupal Developer & Consultant

Freelancer

Designed and developed 'epaithros' destination management portal (B2C & B2B), integrating third-party services and access control.
Implemented custom Drupal modules, including chatbot integration with automated retraining on updated data.
Managed ETL/data migration workflows for importing and transforming external content.
Designed CMS architecture, taxonomy, and navigation for seamless user journeys.
Integrated mapping and geolocation features (Google Maps, Leaflet Maps).

Sep 2017 - Present

8 years 6 months

Software Engineer

MS POS GmbH

Architected and developed core modules of a modular, cloud-based POS system used in multiple EU countries.
Implemented fiscalization modules for Germany, Austria, and France, ensuring compliance with local regulations.
Implemented and maintained in-person payment services, integrating providers (Adyen, Viva, Pepper) through middleware solutions, enabling seamless checkout experiences and supporting multi-country retail operations.
Integrated POS system with ERP platforms (Navision, MS Business Central), enhancing operational efficiency.
Acted as technical project lead for Vorwerk Retail, coordinating implementation across teams and ensuring timely delivery.
Mentored junior developers and coordinated cross-functional teams.

Dec 2014 - Dec 2021

7 years 1 month

Software Engineer / Solution Design

MRICONS Ltd.

Developed a healthcare data platform for MRI exams across 180+ medical centers, reducing turnaround time and improving diagnostics.
Built distributed infrastructure for anonymizing, processing, and securely uploading DICOM metadata.
Developed analytics dashboards and corporate reporting (PowerBI, Telerik), providing insights across the organization.
Collaborated on system architecture and requirements gathering with clinical stakeholders.

Sep 2012 - Oct 2015

3 years 2 months

Software Engineer

Computational Biomedicine Lab, ICS-FORTH

Architected cloud-based EU-funded healthcare platforms, including central pathology review and digital pathology tools.
Implemented a virtual microscope with advanced annotation tools, supporting accurate diagnosis in clinical trials.
Coordinated technical workshops, consortium reporting, and evaluation activities.

Jan 2010 - Dec 2021

12 years

CMS Specialist (Joomla)

Freelancer

Developed and managed tourism and business portals with Joomla CMS.
Key project: 'Destination Crete' portal, the leading alternative tourism portal for the island for 5+ years.
Delivered architecture, multilevel content categorization, multilingual support, and Google Maps integration.

Nov 2006 - Jan 2011

4 years 3 months

IT Enterprise Content Management Consultant

SingularLogic SA

Led ECM solution design and technical implementation across telecom, banking, and transportation sectors.
Managed deployment and optimization of COSMOTE corporate portal, ensuring high-traffic performance and content delivery.
Integrated ECM platform with e-shop, pricelist, and microsites for seamless data flow.
Coordinated small consulting and development team (2–4 members).

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Tourism (13.5 years), Information Technology (11 years), Healthcare (9.5 years), Retail (8.5 years), Banking and Finance (4 years), and Transportation (4 years).

Tourism

Information Technology

Healthcare

Retail

Banking and Finance

Transportation

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (19.5 years), Product Development (16 years), Project Management (15.5 years), Business Intelligence (7 years), and Research and Development (3 years).

Information Technology

Product Development

Project Management

Business Intelligence

Research and Development

Summary

Results-driven Software Engineer & IT Consultant with 18+ years of experience delivering scalable IT solutions across retail, healthcare, tourism, and telecom. Expertise spans software architecture, microservices, CMS platforms, and middleware/payment integrations. Proven track record in designing and implementing secure, compliant in-person payment solutions with providers such as Adyen, Viva, and Pepper. Known for bridging technical depth with client-facing consulting, effectively gathering requirements, leading cross-functional teams, and delivering impactful digital transformation projects.

Retail: Architected a modular, cloud-based POS system adopted across EU retailers, improving merchandise management and compliance with fiscal regulations. Delivered secure in-person payment integrations (Adyen, Viva, Pepper), ensuring reliability and compliance across multiple countries.
Healthcare: Spearheaded the development of a healthcare data platform processing MRI data from 180+ centers, reducing diagnostic turnaround time and improving diagnostic quality.
Tourism: Delivered high-visibility destination management portals for Crete, boosting regional tourism engagement and providing seamless B2C and B2B experiences.
Enterprise: Led ECM consulting projects for COSMOTE (largest Greek telecom), deploying and optimizing large-scale content management operations in high-traffic environments.

Skills

Programming & Frameworks: Java (Spring Boot, Hibernate/jpa), Python, C#, .Net, Javascript, Drupal, Joomla
Databases: Mssql, Mysql, Postgresql, Mongodb, Couchdb
Concepts & Practices: Agile/scrum, Oop, Microservices, Rest Apis, Middleware Integrations, Dicom Protocol, Bi & Data Warehousing, Data Visualization
Tools & Platforms: Intellij Idea, Visual Studio, Azure Devops, Jira, Github, Powerbi, Keycloak Iam
Professional Strengths: Client Communication, Requirement Analysis, Project Leadership, Mentoring, Rollout Coordination

Languages

Greek

Native

English

Advanced

Education

Technical University of Crete

MSc in Electronic & Computer Engineering · Electronic & Computer Engineering · Chania, Greece

Certifications & licenses

Driving License: EU Category B

Profile

Created

November 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Athanasios based?

Athanasios is based in Heraklion, Greece.

What languages does Athanasios speak?

Athanasios speaks the following languages: Greek (Native), English (Advanced).

How many years of experience does Athanasios have?

Athanasios has at least 19 years of experience. During this time, Athanasios has worked in at least 5 different roles and for 5 different companies. The average length of individual experience is 3 years and 3 months. Note that Athanasios may not have shared all experience and actually has more experience.

What roles would Athanasios be best suited for?

Based on recent experience, Athanasios would be well-suited for roles such as: Drupal Developer & Consultant, Software Engineer, Software Engineer / Solution Design.

What is Athanasios's latest experience?

Athanasios's most recent position is Drupal Developer & Consultant at Freelancer.

What companies has Athanasios worked for in recent years?

In recent years, Athanasios has worked for Freelancer, MS POS GmbH, and MRICONS Ltd..

Which industries is Athanasios most experienced in?

Athanasios is most experienced in industries like Tourism and Hospitality, Information Technology (IT), and Healthcare. Athanasios also has some experience in Retail, Banking and Finance, and Transportation and Logistics.

Which business areas is Athanasios most experienced in?

Athanasios is most experienced in business areas like Information Technology (IT), Product Development, and Project Management. Athanasios also has some experience in Business Intelligence and Research and Development (R&D).

Which industries has Athanasios worked in recently?

Athanasios has recently worked in industries like Tourism and Hospitality, Information Technology (IT), and Retail.

Which business areas has Athanasios worked in recently?

Athanasios has recently worked in business areas like Information Technology (IT), Product Development, and Project Management.

What is Athanasios's education?

Athanasios holds a Master in Electronic & Computer Engineering from Technical University of Crete.

Does Athanasios have any certificates?

Athanasios has 1 certificate: Driving License: EU Category B.

What is the availability of Athanasios?

Athanasios is immediately available full-time for suitable projects.

What is the rate of Athanasios?

Athanasios's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.