Konstantinos Aristofanis Nikolaidis
@konstantinosna
Customer service professional delivering quality interactions and reliable technical support.
GreeceWhat I'm looking for
I am a customer service professional with broad experience supporting major telecom brands, postal services, and IT support roles. I consistently go above and beyond to build strong customer relationships and resolve invoicing, contract, order, and technical inquiries.
My recent roles include supporting Telefonica O2 and Deutsche Telekom customers, where I handled billing, contracts, orders, sales, and technical issues while contributing to workforce management and team-leader tasks. I also provided IT support to office staff and executives and performed voluntary translation and customer-support work.
I have pursued continuing education in cybersecurity, sound engineering, data analytics, and AI training, and I hold practical skills in Microsoft Office, G Suite, basic SQL, Python and Matlab, prompt creation and evaluation, and SEO. I combine technical aptitude with frontline customer-facing experience.
I am motivated by roles that let me solve customer problems, improve processes, and strengthen support operations and customer satisfaction.
Experience
Work history, roles, and key accomplishments
DT- Contacting customers to set up appointments for various stages of a fiber installation in Germany
- Providing support for technical and procedural questions
YGProvide support for Telefónica O2 mobile and landline customers handling invoices, contracts, orders and technical inquiries, achieving high customer satisfaction through quality interactions.
DTSupported Deutsche Telekom mobile and landline customers with invoice, contract, order and technical inquiries, contributing to timely issue resolution and service continuity.
IT Support Specialist
3DSA
Sep 2021 - Sep 2024 (3 years)
Provided IT support for office operations and the CEO, resolving technical issues and assisting with travel- and office-related technical needs to maintain business continuity.
DPPostal Delivery Worker
Deutsche Post
Mar 2019 - Jun 2021 (2 years 3 months)
Delivered letters and packages while handling customer inquiries on route, ensuring timely deliveries and accurate customer data handling.
Security Police Officer
Greek Army
Mar 2018 - Jan 2019 (10 months)
Served as a police officer providing security for buildings and high-ranking officers and performing money transport duties during conscription.
SEO Specialist
Remazing
Mar 2017 - Jul 2017 (4 months)
Performed search engine optimization for Amazon listings via keyword analysis and product page improvements to increase discoverability and sales.
Hostel Manager
Buch-ein-Bett Hostel
Mar 2016 - Jun 2016 (3 months)
Managed hostel operations including facility management, bookings, customer service and basic accounting to ensure smooth guest experiences.
Customer Service Associate
NDR Media
Oct 2015 - Feb 2016 (4 months)
Handled customer inquiries, orders and data corrections for a lottery product, improving data accuracy and customer satisfaction.
Education
Degrees, certifications, and relevant coursework
EITCA
Certification, Cybersecurity
Ongoing Cybersecurity certification through the EITCA program (in progress as of 2025).
Eudokimos - Music School Opera Athens
Diploma, Sound Engineering
2020 - 2021
Grade: 8.4/10
Completed a Sound Engineering program at Eudokimos - Music School Opera Athens with a final grade of 8.4/10.
DTDeutsche Schule Thessaloniki
Abitur
2007 - 2011
Grade: 2,4
Completed German Abitur in the German School of Thessaloniki
UHUniversity of Hamburg
Bachelor of Arts (incomplete), Philosophy and Mathematics
2013 - 2016
Studied Philosophy and Mathematics for six semesters; studies interrupted due to conscription and bachelor degree not completed.
Availability
Location
GreeceAuthorized to work in
Job categories
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