Сергій

RETENTION & LIFECYCLE · PORTFOLIO

Serhii
Yakovenko
CRM & Email · 5+ years turning lifecycle marketing into a revenue channel
for FinTech, Сrypto, iGaming, SaaS & eCommerce.

[open contact info](look above in the "contact info" section) LinkedIn Telegram

SNAPSHOT

What I do
I build retention systems from scratch — lifecycle automation, segmentation, deliverability and measurement —
and run them as a primary, non-paid revenue channel. Strategy plus hands-on execution, working across
product, content, design, dev and data.

5+ 30%+ +12% –18%
years in retention of product revenue Activation. Trial-to-paid churn on at-risk
& lifecycle from CRM channels conversion lift cohorts

Email · SMS · Push · WhatsApp · In-app & pop-ups

TRACK RECORD

Seven years, five teams
2019 – 2020 2020 – 2022 2022 – 2024 2023 – 2024 2024 – 2026

Sigma Ukraine Promodo P2B Exchange Bitmedia Labs 3Commas.io

Content (Email) CRM / Retention
Retention Marketing Retention Marketing Retention Marketing
Manager Manager

First email role — Built 20+ automated
CRM & lifecycle for Full retention cycle for
copy, sends, Scaled CRM to 30%+ lifecircle flows; +12%
leading Ukrainian a global crypto
segmentation of revenue. trial-to-paid activation,
eCommerce brands. exchange, localized.
foundations. −18% churn.

CAPABILITIES

Skills & tooling
Lifecycle & automation Deliverability Experimentation

Trigger-based journeys, onboarding &
Domain reputation, inbox placement, SPF / A/B testing, holdout groups & incrementality,
activation, win-back, RFM segmentation,
DKIM / DMARC, sending infra & warm-up cohort analysis, performance reporting
CLV growth

Channels & creative Analytics stack CRM / ESP stack

CleverTap · Klaviyo · HubSpot · eSputnik ·
Email, SMS, push, WhatsApp, in-app & Amplitude · Looker Studio · GA · Power BI ·
SendPulse · Mailchimp · SendGrid · n8n ·
pop-ups; AI-assisted copywriting Tableau
Zapier · Claude code automations

CASE STUDY · 01

Lifecycle automation maps
End-to-end journeys designed logic-first: onboarding, activation, deposit & value moment triggers, abandoned check-out and dormant
win-back — branched on behavior and segments, then QA'd before launch.

Lifecycle journeys, end to end

Onboarding & activation · trial-to-paid · engagement &
cross-sell · churn-risk win-back · VIP & loyalty — one
connected, behavior-triggered system.

CASE STUDY · 02

Email templates
Responsive, on-brand templates across sales, market updates, product education and affiliate programs — built to render and convert
across clients.

CASE STUDY · 03

Measurement & tracking
Pirate-funnel dashboards (acquisition → activation → retention → revenue) and weekly base-engagement monitoring in Amplitude &
Looker Studio — so every send ties back to a metric.

CASE STUDY · 04

A/B testing in practice
Structured tests on subject lines, offers and pop-up creative — winners standardized into reusable templates.

+38.9% +42.0% 7.06%
opens vs control click-through lift winning pop-up CR

LET’S TALK

Let’s grow your
retention revenue.
[open contact info](look above in the "contact info" section)

linkedin.com

@s_e_r_h_i_i_123

Remote-first