Recommended expert
Ioannis Xanthopoulos
Domain Architect
Experience
Nov 2024 - Present
1 year 4 monthsThessaloniki, Greece
NN Greece
- IP23.10 production support (Troubleshooting / Maintenance / Administration)
Nov 2024 - Mar 2025
5 monthsThessaloniki, Greece
Allianz Ireland
- Decryption of approx. 100 million Siebel fields
Sep 2023 - Present
2 years 6 monthsThessaloniki, Greece
Piraeus Bank Greece
- Upgrade v8 => IP22.2 (On-going administration + Hands-on execution of the upgrade)
Aug 2018 - Present
7 years 7 monthsThessaloniki, Greece
Domain Architect
Vodafone Greece
- Upgrade IP18.12 => IP24.12 (Domain Architect + Hands-on execution of the upgrade)
- Production support (Troubleshooting / Maintenance / Administration)
- Upgrade v8 => IP18.12 (Domain Architect + Hands-on execution of the upgrade)
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 Telecommunication (7.5 years), Banking and Finance (2.5 years), and Insurance (1.5 years).
Telecommunication
Banking and Finance
Insurance
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 (7.5 years) and Operations (7.5 years).
Information Technology
Operations
Summary
I am a freelance contractor with 25 years hands on experience in Siebel projects.
I completed numerous such projects in England, Netherlands, Switzerland, Germany, Ireland, Greece and the U.A.E.
Languages
Greek
NativeGerman
AdvancedEnglish
AdvancedChinese
ElementaryEducation
Oct 1996 - Oct 1997
Cyprus International Institute of Management
Masters in Business Administration, Finance · Business Administration · Nicosia, Cyprus
Oct 1987 - Jul 1992
Aristotles University of Thessaloniki
Dipl. Elec. Eng. TU, Telecommunication systems · Electrical Engineering · Thessaloniki, Greece
Sep 1984 - Jul 1987
23rd Lyceum - Kalithea
Lyceum · Thessaloniki, Greece
...and 3 more
Certifications & licenses
Certified AWS Cloud Practitioner
GR
Certified Salesforce Platform Developer I
GR
Certified Salesforce Administrator
GR
SIEBEL Core Consultant v8 certification
DE
SIEBEL Core Consultant v6 certification
DE
Profile
Created
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Frequently asked questions
Do you have questions? Here you can find further information.
Where is Ioannis based?
Ioannis is based in Thessaloniki, Greece.
What languages does Ioannis speak?
Ioannis speaks the following languages: Greek (Native), German (Advanced), English (Advanced), Chinese (Elementary).
How many years of experience does Ioannis have?
Ioannis has at least 8 years of experience. During this time, Ioannis has worked in at least 1 role and for 4 different companies. The average length of individual experience is 2 years and 11 months. Note that Ioannis may not have shared all experience and actually has more experience.
What roles would Ioannis be best suited for?
Based on recent experience, Ioannis would be well-suited for roles such as: Domain Architect.
What companies has Ioannis worked for in recent years?
In recent years, Ioannis has worked for NN Greece, Allianz Ireland, Piraeus Bank Greece, and Vodafone Greece.
Which industries is Ioannis most experienced in?
Ioannis is most experienced in industries like Telecommunication, Banking and Finance, and Insurance.
Which business areas is Ioannis most experienced in?
Ioannis is most experienced in business areas like Information Technology (IT) and Operations.
Which industries has Ioannis worked in recently?
Ioannis has recently worked in industries like Telecommunication, Banking and Finance, and Insurance.
Which business areas has Ioannis worked in recently?
Ioannis has recently worked in business areas like Information Technology (IT) and Operations.
What is Ioannis's education?
Ioannis holds a Master in Business Administration from Cyprus International Institute of Management and a Master in Electrical Engineering from Aristotles University of Thessaloniki.
Does Ioannis have any certificates?
Ioannis has 5 certificates. Among them, these include: Certified AWS Cloud Practitioner, Certified Salesforce Platform Developer I, and Certified Salesforce Administrator.
What is the availability of Ioannis?
Ioannis is immediately available for suitable projects.
What is the rate of Ioannis?
Ioannis's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.
How to hire Ioannis?
To hire Ioannis, click the Meet button on the profile to request a meeting and discuss your project needs.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
800
600
400
200
Market avg: 610-770 €
Market avg: 610-770 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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