Content · Community · Strategy

From SMM Manager
to Marketing Lead.

I’ve built my career across EdTech, iGaming and Web3, moving from hands-on social media work to marketing leadership in startups and large companies.

Serhii Krutko wearing a forest teal blazer

Experience

A career built one role at a time.

Each step expanded my scope: from content and social media to community, positioning and marketing leadership.

EdTech

4brain

Head of Content & SMM

April 2017 — January 2019

I grew from Content & SMM Manager into leading content and social media. My work covered editorial planning, educational articles, SEO, distribution and landing-page copy.

Selected resultGrew the blog from 3,000 to 200,000 monthly readers in two years.

iGaming

Parimatch Tech

Head of Content & Localization

September 2019 — January 2022

I led content and localization in a larger business, working on communications for an international iGaming audience.

Scale of responsibilityContent and localization work spanning an email userbase of more than one million.

Web3

Steadily

Lead Community & Content Manager

September 2022 — March 2025

I led community and content work for a Web3 team, connecting communication with the needs of the product and its audience.

This role brought content and community together as a single area of responsibility.

Web3 · B2B creator marketing

Wallchain & Oznaka

Marketing Lead

August 2025 — present

I lead marketing across positioning, go-to-market, content, social media and community. At Oznaka, that includes B2B messaging and product launch communications, supported by AI automation.

Selected resultGrew the social audience to 100,000 followers in one year.

Skills & expertise

Strategy, with the skills to execute it.

I connect the business goal with the message, the channel and the work needed to deliver it.

Marketing strategy

Positioning, audience segmentation, market and competitor research, B2B marketing and go-to-market planning.

Content & editorial

Messaging, brand voice, writing and editing, SEO, editorial planning, product documentation and content distribution.

Social media & community

Platform-native content, social listening, KOL marketing, community development, customer advocacy, email and CRM marketing.

AI & marketing workflows

Brand-voice skills for content teams and AI automation across marketing. I’ve also developed an MCP server for querying social media data in plain language through Claude.

Examples of my work

See the work behind the roles.

Website launches, content strategy and writing — from the message to the finished piece.

Oznaka · B2B creator marketing

Website launch

Positioning, messaging and website copy for Oznaka’s creator marketing product.

Visit Oznaka

4brain · EdTech

SEO & content strategy

Editorial planning, educational content and search-focused distribution for the 4brain blog.

Explore the blog

Selected articles

Product launch

Meet Oznaka

Introducing Wallchain’s next chapter in creator marketing.

Read article

Product explainer

Wallchain Select

Explaining high-ROI, targeted creator campaigns. Public byline: SK.

Read article

Co-authored research

3.7X More Reach for Half the Cost

Research with Yurii Kyparus comparing estimated audience reach and creator costs.

Read article