Vassia Efstathiou
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Vassia Efstathiou Email & Phone Number

Senior Account Manager - M.E.N.A & Asia at Upstream at Upstream
Location: Athens Metropolitan Area, Greece 7 work roles 3 schools
1 work email found @upstreamsystems.com LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

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Current company
Upstream
Role
Senior Account Manager - M.E.N.A & Asia at Upstream
Location
Athens Metropolitan Area, Greece
Company size
433 employees

Who is Vassia Efstathiou? Overview

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Quick answer

Vassia Efstathiou is listed as Senior Account Manager - M.E.N.A & Asia at Upstream at Upstream, a with 433 employees, based in Athens Metropolitan Area, Greece. AeroLeads shows a work email signal at upstreamsystems.com and a matched LinkedIn profile for Vassia Efstathiou.

Vassia Efstathiou previously worked as Senior Account Manager- M.E.N.A & Asia at Upstream and Account Manager- M.E.N.A & Asia at Upstream. Vassia Efstathiou holds Msc, International Public Policy from University College London, U. Of London.

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Email format at Upstream

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{first}.{last}@upstreamsystems.com
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AeroLeads found 1 current-domain work email signal for Vassia Efstathiou. Compare company email patterns before reaching out.

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Profile bio

About Vassia Efstathiou

For the past 15 years, I am leading change in all aspects of customer experience, retention, and monetization for digital products across Europe, Asia & Africa. Experience in both corporate and independent roles. Digitized and scaled operations for a VC-backed start-up in healthcare, resulting in acquisition by a multinational leader.Colleagues know me as a strategic thinker, analytical, highly customer-focused and result oriented. I have experience in leading cross-functional and culturally diverse teams with a strong focus on results and development.

Listed skills include Business Strategy, Project Management, Strategy, E Commerce, and 48 others.

Current workplace

Vassia Efstathiou's current company

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Upstream
Upstream
Senior Account Manager - M.E.N.A & Asia at Upstream
london, greater london, united kingdom
Website
upstreamsystems.com
Employees
433
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7 roles · 18 years

Vassia Efstathiou work experience

A career timeline built from the work history available for this profile.

Senior Account Manager- M.E.N.A & Asia

Current
Upstream

Athens, Attiki, Greece

Jun 2023 - Present

Account Manager- M.E.N.A & Asia

Upstream

Athens, Attiki, Greece

Multinational leader in mobile technology, providing solutions for greater customer engagement.• VAS & web acquisition for TELCOs; reporting to the VP of Operations• primary ownership of client relationship, responsible for meeting commercial, financial, and product KPIs• coordinating efforts between internal stakeholders (Product, Marketing, Legal, BI, IT)• liaising with local agents and partners- managing their local resources• monitoring local competition, detecting potential risks, identifying opportunities & upselling

Jul 2020 - Jun 2023

Director Of Operations

Bookdialysis.Com

International

The first booking engine in renal care with a global network of 450+ clinics/hospitals across 50 countries.• lead product digitization, setting-up & scaling of operations • VC-backed, acquired by multinational healthcare leader in YR3

Jul 2018 - Jul 2020

User Experience Manager

Booknowmed.Com

International

Jul 2017 - Jun 2018

B2B2C Global Accounts Manager

Akazoo

Athens, Greece

Start-up music streaming platform with a presence in 12 markets, across Europe, Africa, Asia & LATAM.• primary ownership of client relationship; responsible for meeting commercial, financial, and product KPIs• coordinating solution development efforts between internal stakeholders (Content, Product, Marketing, Technical, BI)• identifying opportunities and upselling• contributing to product requirements (Mobile & Web)

Dec 2015 - Jul 2017

Global Head Of Customer Experience & User Engagement - Jumia Market (Powered By Rocket Internet)

Jumia Group

Paris Area, France

Jumia Market is the #1 online marketplace in emerging markets with a presence in 35+ countries. Jumia Market is owned by Jumia Group (powered by Rocket Internet, MTN, Millicom, AXA, Orange, Goldman Sachs). • global implementation of tools with the goal of establishing a solid framework of performance monitoring• defining and optimizing the CLC and one-to-one interactions, improving overall customer satisfaction (NPS, CSat)• working alongside internal stakeholders to improve on-site/in-app UX and user engagement• leading VAS initiatives for the overall Buyers Department

Oct 2014 - Nov 2015

Founder

Foodhall Inc.

London, United Kingdom

Start-up e-shop offering high quality, traditional Greek F&B to consumers abroad, with part of the revenues redirected to local small-scale suppliers and cooperatives. • market research, budgeting, and pitching for project financing to local and international investors• sourcing, assessing, and testing products according to EU and International standards• defining product requirements for Web• marketing and promotion strategy planning

2009 - 2014 ~5 yrs
Team & coworkers

Colleagues at Upstream

Other employees you can reach at upstreamsystems.com. View company contacts for 433 employees →

DC Derrick Collins Derrick Collins Colleague at UpstreamCocoa, Florida, United States View → DP Dimitris Patriarcheas Dimitris Patriarcheas Colleague at UpstreamGreece View → ML Mike Lane Mike Lane Colleague at UpstreamGreater Brighton And Hove Area, United Kingdom View → PA Panagiotis Alimatiris Panagiotis Alimatiris Colleague at UpstreamGreece View → LM Laura Maya Laura Maya Colleague at UpstreamGaropaba, Santa Catarina, Brazil View → KD Kelechi Dennar Kelechi Dennar Colleague at UpstreamNigeria View → MA Medard Alain Medard Alain Colleague at UpstreamSouth Africa View → VK Vasiliki Katsiouli Vasiliki Katsiouli Colleague at UpstreamMarathónas, Attiki, Greece View → MT Maria Tsoli Maria Tsoli Colleague at UpstreamAthens Metropolitan Area, Greece View → AL Ana Luiza Alencar Ana Luiza Alencar Colleague at UpstreamPorto Alegre, Rio Grande Do Sul, Brazil View →
3 education records

Vassia Efstathiou education

International Baccalaureate

Moraitis Ib School
FAQ

Frequently asked questions about Vassia Efstathiou

Quick answers generated from the profile data available on this page.

What company does Vassia Efstathiou work for?

Vassia Efstathiou works for Upstream.

What is Vassia Efstathiou's role at Upstream?

Vassia Efstathiou is listed as Senior Account Manager - M.E.N.A & Asia at Upstream at Upstream.

What is Vassia Efstathiou's email address?

AeroLeads has found 1 work email signal at @upstreamsystems.com for Vassia Efstathiou at Upstream.

Where is Vassia Efstathiou based?

Vassia Efstathiou is based in Athens Metropolitan Area, Greece while working with Upstream.

What companies has Vassia Efstathiou worked for?

Vassia Efstathiou has worked for Upstream, Bookdialysis.Com, Booknowmed.Com, Akazoo, and Jumia Group.

Who are Vassia Efstathiou's colleagues at Upstream?

Vassia Efstathiou's colleagues at Upstream include Derrick Collins, Dimitris Patriarcheas, Mike Lane, Panagiotis Alimatiris, and Laura Maya.

How can I contact Vassia Efstathiou?

You can use AeroLeads to view verified contact signals for Vassia Efstathiou at Upstream, including work email, phone, and LinkedIn data when available.

What schools did Vassia Efstathiou attend?

Vassia Efstathiou holds Msc, International Public Policy from University College London, U. Of London.

What skills is Vassia Efstathiou known for?

Vassia Efstathiou is listed with skills including Business Strategy, Project Management, Strategy, E Commerce, Marketing Strategy, Team Management, Negotiation, and Entrepreneurship.

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