Konstantin Ratushniak
@konstantinratushniak
Senior Product Manager driving growth and scalable payments and fintech products.
What I'm looking for
I am a Senior Product Manager with 7+ years building and scaling web and mobile products across Mobility, Crypto, MarTech and FinTech, experienced in both B2C and B2B contexts.
I focus on data-driven growth through hypothesis-led experimentation, A/B testing and funnel optimisation, and have delivered measurable outcomes such as +23% conversion, +24% retention and improvements to unit economics (ARPU, CAC, LTV).
I have led cross-functional R&D teams (up to 15), introduced OKRs and discovery/delivery rituals, and shipped payments and orchestration solutions (cards, P2P, APMs, open banking, PSP/API integrations) that improved approval rates, reduced failed transactions and scaled partner onboarding.
Experience
Work history, roles, and key accomplishments
Senior Product Manager
Paysonix
Jun 2024 - Present (1 year 7 months)
Kicked off and led Growth and Integration product streams for a PSP and SaaS orchestration platform, running 26+ experiments that increased checkout conversion by 23% and reduced support contacts by 46% while improving approval rates and lowering OPEX.
Senior Product Manager
Cryptopay
Jun 2023 - Mar 2024 (9 months)
Led onboarding, platform, API and website product verticals; rebuilt onboarding to achieve a 22% CR increase and 3x faster activation, and ran landing page tests improving conversion by 8% while modeling unit economics to inform GTM.
Product Lead
inDrive
Sep 2021 - Mar 2023 (1 year 6 months)
Set up and led the courier/delivery vertical (2M+ orders/month) and a 15-person R&D team, launching a delivery product in LATAM that increased retention by 24% and improving courier conversion and cancellation metrics.
Product Owner (Cards & FX)
Alfa-Bank
May 2020 - Aug 2021 (1 year 3 months)
Owned card and FX products in the bank app, led two engineering teams and launched Samsung Pay tokenization increasing debit card revenue by 11% while reducing time-to-first-transaction from 14 to 4 days.
Product Manager
Banki.ru
Jun 2018 - May 2020 (1 year 11 months)
Owned roadmap for debit assistant, CMS and landing flows; launched a smart debit assistant that grew payment user share by 11% and rebuilt CMS to cut content ops cost by 25%.
Education
Degrees, certifications, and relevant coursework
Ulyanovsk State Technical University
Master of Science, Information & Communication Technology
2013 -
MSc in Information & Communication Technology from Ulyanovsk State Technical University.
Availability
Location
Authorized to work in
Job categories
Skills
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