About

We’re Taking Mobile Engagement Further

For over two decades, we’ve been innovating new and exciting ways of boosting mobile engagement and acquisitions for our ambitious customers across the world.

Our Story

Built to surpass

Many companies in our industry come and go—they stake their claim on the digital frontier when their strategy is relevant and then disappear. The good ones are built to last, and are leading the way in digital marketing campaigns and customer desires at any given time. We reinvent the market and ourselves, surpassing what is standard.

Our people are some of the best in their field—agile, innovative, full of fresh ideas, and thriving within an ever-changing tech environment. Our platform delivers foolproof, targeted, automated campaigns that drive hyper-focused results with authentic outcomes. No fraud. No number pumping. Just real customers, sign-ups, and sales. Our customers find we're the only thing ever needed to go further.

Leadership

Meet the folks making digital that much more daring every day

Board

Milestones

How we got here.

2001
The beginning
Marco Veremis and Alex Vratskides are a company of four, founding Upstream in downtown Athens as a media serving platform. This is where the story begins.
2006
The mobile operator era
Upstream starts working with mobile operators in Europe, in Greece, Italy, Spain and Portugal, marking the start of a 15-year path that has created our unique mobile-first know-how.
2008
The world is ours
2008 marks our entry to a new exciting chapter, turning our sights to the promising land of high-growth markets. We open our office in Rio, Brazil, along with operations in Africa.
2014
An investing vote
Actis, the leading global emerging market investor, with US$10bn assets under management, makes a significant investment in Upstream, affirming our business model, technology, people, partner portfolio and unmatched track record of customer engagement and conversion. The same year we set base in Kuala Lumpur.
2017
More extroversion
We expand our ecosystem with co-operations and partnerships for delivering leading content and experiences from gaming to lifestyle.
2018
Technology building blocks
We consolidate our platform and build unique features like our built-in anti-fraud solution or our zero-rated, ad-funded mobile internet portal.
2020
We grow, you grow
During the time of “all digital”, and while driving growth for even more companies across industries, we relaunch our reinforced Grow technology platform, crafting seamless, mobile-first user journeys for even higher results.
2025
A bold new chapter
Stepping into a dynamic new era, we are proud to join the Intersel family. Together, we are uniting our strengths to elevate our technology, pioneer new frontiers in AI-driven innovation, and deliver deeply impactful customer journeys worldwide.
2026NOW
A new era of growth
We accelerate our digital transformation, with AI among the new tools powering our platform and operations, and sign new partnerships with leading mobile operators.

Upstream colleagues at the office reception

Culture & Careers

Life & Work at Upstream

We like to turn things on their heads, be out-front, change course, and make mistakes if it means becoming better. This is what makes us great. Upstream is a place of growth and acceleration — where we all strive to be the best versions of ourselves.

Join us