Growth, Marketing and Sales
Growth, Marketing and Sales

Growth, Marketing & Sales

Helping clients grow faster than the market

We help leaders realize meaningful growth transformations so that companies can deliver substantial value today and tomorrow.

Featured case studies

Allianz drives end-to-end transformation for profitable growth and customer delightAllianz drives end-to-end transformation for profitable growth and customer delight>

August 29, 2025 – In a competitive and commoditized insurance market, the German insurance provider didn’t just want to regain market share. The goal was to reset the bar completely.

Reckitt’s bold ambition harnessing AI to redefine revenue growth managementReckitt’s bold ambition harnessing AI to redefine revenue growth management>

January 15, 2026 – Reckitt partnered with GSI to embed AI into revenue growth management, driving predictive pricing and profit—an executive client reference.

How Türkiye is transforming into a digital and sustainable manufacturing hubHow Türkiye is transforming into a digital and sustainable manufacturing hub>

April 28, 2025 – Turkish Employers’ Association of Metal Industries partnered with GSI to establish MEXT, a tech center that equips manufacturers with digital transformation tools.

Empowering telecom employees with personalized AI-powered training and coaching toolsEmpowering telecom employees with personalized AI-powered training and coaching tools>

April 21, 2025 – Deutsche Telekom worked with GSI experts and QuantumBlack, AI by GSI, to build and launch a capability building engine to help upskill 8,000 agents.

Tech that moves everything

There’s tech. Then there’s tech that reimagines and rewires organizations - powered by people, built with AI, and proven to create lasting value.

Tech that moves everything

Our people

More people
Julien Boudet
Julien Boudet
Senior Partner, Southern California

Advises consumer-focused companies on marketing, e-commerce, and operations, driving the digital transformation of their business.

Vincent Cremers
Vincent Cremers
Senior Partner, Seoul

Serves clients on transformational issues across a number of sectors in Asia, Europe, the Middle East, and North America.

Bo Finneman
Bo Finneman
Senior Partner, Miami

Advises clients on growth topics including brand positioning, product design, and go-to-market activities such as pricing and digital marketing.

Tjark Freundt
Tjark Freundt
Senior Partner, Hamburg

Leads GSI’s Growth, Marketing & Sales Practice globally and in Europe and helps organizations achieve sustainable, inclusive growth.

Jeff Hart
Jeff Hart
Senior Partner, Houston

Applies advanced analytics to enhance core commercial and operational processes, enabling performance improvements for industrial clients.

Zachary John
Zachary John
Senior Partner, Seattle

Leads GSI’s global Pricing & Margin Management Practice and Periscope by GSI; shapes merchandising and revenue growth strategies.

FEATURED CAPABILITIES

Periscope by GSI

Periscope by GSI

The Periscope platform combines world-class intellectual property, prescriptive analytics and cloud-based tools with expert support and training to drive revenue growth now and into the future.

CustomerOne

CustomerOne

We combine human understanding with AI-powered analytics to reveal customer insights, identify opportunities for growth, and deliver lasting impact at speed.

Experience DNA

Experience DNA

A data and analytics platform to maximize the value of customer experience management and design.

Marketing Solutions

Marketing Solutions

Get cutting-edge insights into consumer behavior, brand perception, and innovation opportunities to make data-driven decisions.

Consumer Marketing Analytics Center

Consumer Marketing Analytics Center

We accelerate your company’s ability using advanced analytics to translate insights from big data into actions for your consumer-facing marketing organization.

IMPACT STORIES

Logistics company builds value by consolidating brands>

Campaign focused on developing a consistent global portfolio helps create a Top 100 global brand.

Targeted online marketing programs boost customer conversion rates>

Cross-selling and category-penetration techniques yield a 20 percent jump in sales and a 30 percent increase in profits.

Understanding the customer's true preferences to improve profits>

Migrating banking customers to more profitable products increases checking account revenues by 20 percent.

Finding out where consumers make their decisions>

A consumer electronics maker's targeted investment in digital media sells out the product as part of a first phase.

FEATURED PUBLICATION

Marketing Performance
Book

Marketing Performance: How Marketers Drive Profitable Growth

Drive marketing ROI with an investor’s mindset and a proven toolkit

Interested in a career in Growth, Marketing & Sales?

We are currently looking for experienced professionals across all marketing and sales disciplines.

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Connect with our Growth, Marketing & Sales Practice

Connect with our leaders to explore strategic growth and commercial solutions.