About us

A team of 16 senior consultants with over 100 years of combined experience, helping e-commerce businesses grow profitably and sustainably in Europe and the USA.

€500M+

Total Client Revenue

100+

Years Combined Experience

95%

Client Retention Rate

16

Senior Consultants

Our Values

Truth over marketing

We don’t sugarcoat reality or wrap problems in glossy presentations. First, we identify what’s not working and why - then we propose solutions.

Business as a whole

We don’t treat marketing in isolation. Decisions are made in the context of strategy, finance, processes, teams, and the company’s real capacity.

Impact over activity

We don’t do everything. We focus on what has the greatest impact. Clear priorities matter more than long to-do lists.

Measurable, sustainable growth

Short-term spikes in performance don’t interest us if they lack long-term value. We focus on growth that is scalable, sustainable, and controllable.

Meet the people behind Opinest

We believe in partnership, transparency, and results. Our senior consultants combine years of expertise in marketing, data, and e-commerce strategy to deliver real, lasting impact.

Matej Karaba

Matej Karaba

Long-term Impact & Business Consultant

Matej Karaba works in the field of development, business consulting and the creation of long-term strategies for e-commerce projects such as NORTHFINDER.

Michal Lubelec

Michal Lubelec

E-commerce Performance & Strategy Consultant

Michal Lubelec has several years of experience in performance marketing and campaign automation for large e-commerce players.

Marek Ďuračka

Marek Ďuračka

Business & Marketing Strategy Consultant

Marek has experience in managing complex business strategies and performance campaigns, including brand development. Under his leadership, small Slovak e-shops have achieved an annual turnover of up to 10 million €.

Mazen Kurdy

Mazen Kurdy

CEO

Mazen leads Opinest as CEO, specializing in the strategic growth of companies in the US market. He helps e-commerce stores overcome global expansion barriers and set up processes for the world stage.

Kristína Kráľová

Kristína Kráľová

Sales Manager

Tina oversees business activities in the Slovak and Czech markets, focusing on building long-term partnerships. She leverages expertise in payment solutions to optimize the purchasing process.

Martina Chujacová

Martina Chujacová

Data & Performance Marketing Consultant

Maťka is a Google Ads and data marketing specialist with an academic background in quantitative marketing methods. She implements advanced measurement techniques and alternative data collection methods to drive strategic business growth.

Vladimíra Giláňová

Vladimíra Giláňová

Data and Performance Marketing Consultant

Vlaďka is a performance specialist who audits and optimizes campaigns across Google, Microsoft, and Sklik. Through precise analytical setup, she prepares clients for successful international expansion.

Jana Švitelová

Jana Švitelová

UX & Development Consultant

Janka is a certified UX consultant who utilizes analytics and research to remove barriers in the purchasing process. She also oversees the growth of data tools and the optimization of calculation algorithms.

Lukáš Bundzák

Lukáš Bundzák

SEO & Linkbuilding Consultant

Lukáš serves as an SEO consultant specializing in link building, innovation, and process automation. He helps e-commerce stores achieve top search engine rankings in domestic and international markets.

Veronika Svajčiaková

Veronika Svajčiaková

SEO & Content Consultant

Veronika specializes in organic growth and complex SEO strategies for the European market. She combines technical website audits with data-driven content planning to ensure maximum visibility for e-commerce projects in search engines.

Veronika Bačová

Veronika Bačová

Social Media Business Strategist

Veronika specializes in social media management and Facebook ad optimization. She focuses on creating engaging content and strategically designed campaigns that effectively reach audiences and increase return on investment.

Lujza Sigetová

Lujza Sigetová

Junior Marketing Manager

Lujza connects the world of creativity and performance marketing with a focus on Meta Ads. She helps brands scale through strategic content creation and campaigns driven by data and innovative AI tools.

Martin Svajčiak

Martin Svajčiak

Data Analyst & Process Automation Specialist

Martin is a data analyst who utilizes full-stack development experience to automate reporting and data visualization. He develops advanced AI models for anomaly detection and streamlined business decision-making.

Paulína Tóthová

Paulína Tóthová

PPC & Brand Strategy Consultant

Pauli integrates PPC campaign management with complex marketing strategies. She helps brands define their tone of voice and build a consistent identity across all digital channels.

Paulína Štefeková

Paulína Štefeková

Internal Marketing & PR

Pauli is responsible for internal marketing, PR, and brand building for Opinest. She connects the expert know-how of consultants with communication outputs to authentically reflect the team’s work and values.

Vanessa Burešová

Vanessa Burešová

Junior UX designer

Vanessa serves as a UX designer who transforms usability analysis into intuitive visual solutions. She creates prototypes and interfaces that enhance the customer experience for major e-commerce players.

Nina Komárková

Nina Komárková

Junior SEO Specialist

Nina focuses on technical SEO and increasing website visibility in organic search. She complements her activities with email marketing to support comprehensive growth and customer outreach.

Tatiana Krupala Mykhailova

Tatiana Krupala Mykhailova

PPC Specialist - Google

Tatiana is a performance marketing expert specializing in Google Ads and strategic team leadership. With extensive experience in large-scale e-commerce, she helps brands effectively measure, optimize, and scale their advertising activities across multiple platforms.