Summary
Overview
Work History
Education
Skills
Interests
Timeline
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Konstantinos Ntzachristos

Konstantinos Ntzachristos

Customer Service Supervisor/Team Lead
Keratsini

Summary

Experienced in leading customer service teams and optimizing contact center operations with a strong focus on performance, efficiency, and customer satisfaction. Progressed from Advisor to Supervisor and Real-Time Analyst, demonstrating adaptability, leadership, and a data-driven approach to continuous improvement. A strong communicator with proven ability to coach teams, resolve conflicts, and deliver clear, effective support across all levels. Skilled in team development, process enhancement, and workforce planning.

Overview

6
6
years of professional experience
2
2
Languages

Work History

Customer Service Supervisor

Concentrix Greece
05.2022 - Current
  • Overseeing team performance through regular monitoring and personalized coaching to drive individual growth and boost overall productivity.
  • Leading the development and execution of process enhancements to improve response times and elevate the quality of customer interactions.
  • Maintaining detailed records of customer interactions, including inquiries, complaints, and resolutions, to ensure service transparency and consistency
  • Conducting performance reviews, offering actionable feedback and identifying development opportunities to strengthen team capabilities.
  • Designing and maintaining key customer service metrics and reporting tools to track performance trends and guide strategic improvements.

Real-Time Analyst

Concentrix Greece
09.2023 - 04.2024
  • Managed daily call center operations, including scheduling, volume management, and performance analysis.
  • Collaborated with teams to optimize staffing and improve service efficiency.
  • Delivered performance reports to support data-driven decision-making and continuous improvement.

Senior Customer Service Advisor

Concentrix Greece
10.2021 - 05.2022
  • Supported team members by improving product knowledge and customer service techniques.
  • Handled complex complaints, focusing on resolution and customer retention.
  • Analyzed team performance to identify training needs and optimize service delivery.

Customer Service Advisor

Concentrix Greece
05.2021 - 10.2021
  • Managed inbound calls, resolved customer issues, and provided accurate product and service information.
  • Ensured customer satisfaction by proactively addressing needs and offering personalized solutions.

Cashier/Customer Service Associate

Shell Hellas
04.2019 - 12.2020
  • Provided excellent customer service, creating a welcoming in-store experience.
  • Ensured compliance with operational procedures and handled cash register reconciliation.
  • Promoted additional products and services, driving sales through upselling and cross-selling.

Education

Bachelor of Arts - Political Science

University of Crete
Rethymno, Greece
04.2001 -

Skills

  • Management Skills
  • Data Analysis & Reporting
  • KPI tracking
  • Strong communication skills
  • Leadership
  • Conflict resolution

Interests

Traveling & cultural exploration

Volunteering & community engagement

Fitness training & gym workouts

Timeline

Real-Time Analyst

Concentrix Greece
09.2023 - 04.2024

Customer Service Supervisor

Concentrix Greece
05.2022 - Current

Senior Customer Service Advisor

Concentrix Greece
10.2021 - 05.2022

Customer Service Advisor

Concentrix Greece
05.2021 - 10.2021

Cashier/Customer Service Associate

Shell Hellas
04.2019 - 12.2020

Bachelor of Arts - Political Science

University of Crete
04.2001 -

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Konstantinos NtzachristosCustomer Service Supervisor/Team Lead