Senior CX Specialist | Head of Marketing

OLia Lange, Founder of Menteli

Hands-on Head of Marketing with 10+ years of experience building and scaling full-funnel marketing systems across B2C products. Proven track record of driving predictable revenue growth through acquisition, lifecycle, conversion optimization, and customer experience (CX) strategies. Delivered up to 3× CPL reduction, 22–30% revenue growth, 38% retention improvement, and 3.5× sales scaling through data-driven experimentation, CRM automation, and cross-channel execution. Combines strategic thinking with hands-on expertise across paid media, CRM, CX, and marketing analytics.

I am responsible for your marketing

Research & Thought Leadership

My work is grounded on
1. PhD dissertation manipulation mechanisms, decision-making, and behavioral influence (PhD, Saint Petersburg State University).
2. A research article on How Cognitive and Behavioral Insights Inform Strategic Decisions
3. A research article on Behavioral Drivers Behind Customer
4. A research article on Understanding Behavioral Drivers Behind Human Decisions

I work with companies to:

● identify hidden churn drivers● analyze customer perception gaps● redesign customer journeys using behavioral insights● improve loyalty without relying on discounts or aggressive marketing

Industry Insights & Recognition

1. Google Ads Search Certification2. Customer Behavior in Real Estate Decision‑Making3. Client Behavior in Real Estate Transactions

Elina L.

Founder atZennIP, Finland

I am handling everything in my business by myself, therefore it was really good to get advice from the customer’s perspective. Working with Menteli helped me see my services through their eyes, spot the gaps, and I received practical guidance on how to address these gaps.
What stood out was the honest and enthusiastic approach, and the time taken to truly understand both me and my business. The psychological insight into marketing, along with detailed and practical suggestions, made the guidance not only valuable but also inspiring. I recommend Menteli!

September 2025

Ekaterina M.

Entrepreneur, Finland

“Olia demonstrated a solid understanding of marketing principles, campaign planning and execution and exhibited strong analytical and problem-solving skills. Her proficiency in using online marketing tools [...] was impressive and contributed significantly to our campaign objectives. Additionally, she displayed excellent communication and teamwork abilities. Her performance reflected a high level of professionalism.”

May 2024

Topornikov S.

Commercial DirectorReal Estate Agency "PIA Real Estate"

For nearly two years our agency cooperated with the marketing agency headed by Olga Lange. During this period, we received not only professional support but also a non-standard, creative approach that delivered tangible, practical results.We would especially like to highlight the effective work on segmenting target audiences [...]. In addition to digital channels, the agency offered a number of original and economically efficient offline solutions. For example, the “Horrors of a Real Estate Buyer” brochures [...]. This approach proved to be a simple and effective way to build an emotional connection with the local community.Working with Olga Lange has always been a combination of professionalism, reliability, and genuine engagement. We confidently recommend her as a specialist with whom it is both pleasant and productive to cooperate.

October 2017

Nikita P.

SSL Group

HR brand service.“You definitely know your stuff! We recruit 10 logisticians per month now, whereas before, we were recruiting just one per year—and they weren’t really up to standard. We’d love to work exclusively with you!”

December 2020

Jakob S.

Art Gallery

“I like the way you work! Take my friend as a client. Can I give him your contacts?”

January 2021

Maksim D.

Big Bag

“We were pleased to cooperate with you! It's great to choose a brand style from options you like, rather than picking the best from those you don't.”

June 2018