Open to opportunities

Кирилл Прудкий

@kirill-prudkij

Message

I lead Java teams building and modernizing fintech and DeFi backend platforms.

Ukraine

Message

What I'm looking for

I'm looking to lead or contribute to fintech, payments, DeFi, and high-load backend systems, with a focus on practical modernization, payment integrations, and improving legacy Java applications without disrupting critical business functionality.

At AdvCash (Volet), I led a Java team building a custom non-custodial DeFi solution, coordinating delivery, reviewing merge requests, onboarding engineers, and working closely with project managers. I implemented Web3 wallet operations, token swaps, cross-chain swaps, and integrations with 1inch, Jupiter, Allbridge, Rango, and STON.fi.

I also worked on AdvCash's global banking system, developing payment integrations across countries and modernizing legacy systems by moving Spring from 3.2 to 5, Java from 8 to 17, and containerizing environments with Docker.

Earlier, I modernized EU microcredit and banking platforms with Spring, Hibernate, Camunda, REST integrations, Redis, and high-load backend practices. I prefer practical, step-by-step modernization that preserves critical business functionality while making systems easier to maintain, extend, and deploy.

Experience

Work history, roles, and key accomplishments

Tech Lead of Java Team

AdvCash (Volet)

Jun 2025 - Apr 2026 (10 months)

Led a development team for a custom DeFi noncustodial solution: interviewed and onboarded new
team members, reviewed merge requests, coordinated
tasks, and communicated with project managers.
Worked with Java 25, Spring Boot 4, Spring Framework
7, Hibernate 7, Redis, and PostgreSQL. Used virtual
threads to parallelize updates of token data, rates, and
other blockchain-related

Senior Java Developer

AdvCash (Volet)

May 2023 - May 2025 (2 years)

Worked on a global banking system with custom fiat
and cryptocurrency wallets, mass payments, shopping
cart interfaces, cashback programs, loyalty systems,
and other business-critical functionality.
Developed new payment integrations with local
providers in multiple countries and improved existing
legacy integrations, including EPAY.
Modernized the legacy technology stack.

Senior Java Developer

MD Finance

Jul 2021 - May 2023 (1 year 10 months)

Led a development team for six months.
Worked on a fintech Java EE project focused on
microcredit services in the EU. Modernized the
technology stack by gradually introducing new
technologies into the existing architecture.
Contributed to the migration from Java EE/JDBC to
Spring and Hibernate.
Introduced BDD-style testing with Mockito and JUnit 5

Java Software Developer

DBO Soft

Feb 2018 - Mar 2021 (3 years 1 month)

Worked on a banking platform that supported desktop,
web, and Android applications. The system acted as an
integration layer between the Automated Banking
System and client-facing services.
Modernize the technology stack, upgrading legacy
technologies to modern versions, implementing REST
integrations with ABS gateways, and enhancing
existing product functionality.