Євген

SLEPKO YEVGEN
JAVA DEVELOPER
Lviv, Ukraine | [open contact info](look above in the "contact info" section) | Telegram | Linkedin

SUMMARY
I am a Java Backend Developer with 4 years of experience in building cloud-native solutions. My
main stack is Spring, Kafka, SQL and NoSQL databases, AWS. I thrive on challenging tasks and love
to expand my skillset. Looking for new challenging roles.
Relocation: possible

PROFESSIONAL EXPERIENCE
Java Developer, Pick.A.Roo Dec 2021 – Feb 2024 (2 year 2 months)
As a Java Developer, I was part of a team responsible for the backend services of Pick.A.Roo - a
premium Philippine delivery platform operating in 20+ cities. The service offers curated groceries,
food, and essentials from top brands, providing a high-quality and convenient experience.
Implemented key features for the customer loyalty program, including point accrual and
redemption functionalities, contributing to improved customer retention.
Built services for user rewards system, based on flexible rules created on-the-fly by the
marketing team.
Took responsibility for maintaining 3 biggest payment integrations in Phillipines.
Implemented an automated system for detecting delivery delays and compensating users with
loyalty points, reducing manual support workload by 40%.
Developed microservices in event-driven architecture, both in classic and reactive styles with
Spring MVC and WebFlux.
Covered mission-critical functionality with integration tests using Testcontainers, Spring Test.
Utilized monitoring dashboards (Grafana) and logging tools (Loki) to track service performance
and troubleshoot issues.
Onboarded new team members, reviewed pull requests.

Java Developer, Spinner Mar 2024 – Present (1 year 11 months)
Spinner is a live casino software provider delivering real-time gaming solutions for online gambling
platforms. The company specializes in live dealer games, scalable betting infrastructure, and high-
performance backend systems, ensuring low-latency gameplay, secure transactions, and
compliance with regulatory requirements across multiple markets.
Developed and enhanced backend components for a live casino platform, focusing on real-time
betting flows with high concurrency and low-latency constraints.
Implemented Auto Bet Behind functionality, allowing users to automatically place bets behind
selected players, which increased betting volume and overall platform revenue.
Built demo game mode enabling users to play live casino games without real balance, improving
user onboarding and conversion to real-money gameplay.
Integrated the platform with an external fraud detection system to monitor suspicious betting
patterns and reduce fraudulent activity.
Implemented demo URL tokens for internal admin players to test live casino games without real
balance involvement.
Implemented a promotions system for live blackjack games that enabled bonus rewards based
on specific in-game events (e.g. Joker card outcomes), increasing player engagement and
platform reach.
Covered critical flows with integration and e2e tests, reducing production issues.
EDUCATION
LVIV POLYTECHNIC UNIVERSITY Sep 2020 - Sep 2024
Bachelor's Degree in Computer Science

SKILLS
Java, Spring, Spring Boot, Spring Data Jpa, Spring Cloud, Spring WebFlux, Hibernate, SQL, NoSQL,
PostgreSQL, Redis, Git, Docker, Kafka, Gradle, Maven, Prometheus, Grafana, Loki, TestContainers,
Microservice Architecture, S3, Kubernetes, Grpc, Protobuf

LANGUAGES
English - B2
Ukrainian - fluent
Russian - fluent