Денис

Denys Korliakov CV
Java Software Engineer
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Location: Ukraine

Summary
Java Software Engineer with 2.5+ years of commercial experience specializing in web
development, cloud engineering, and full-stack solutions. Proficient in Java, JavaScript (ES6),
the Spring Framework, React, Solidity, and cloud technologies such as AWS and Azure.

Contributed to projects in the fintech, gaming, and enterprise management sectors, working
across both back-end and front-end development.

What I Do
Build reliable back-end services using Java and Spring Boot, with hands-on experience in
microservices and distributed communication technologies such as Kafka and gRPC.
Work confidently with containerized environments, including Docker and Kubernetes, and
cloud platforms such as AWS and Azure.
Deliver features end to end—from implementation to deployment and production support.
Focus on code quality, performance, reliability, and system stability.

Technical Skills
Programming Languages: Java, JavaScript, C#, Solidity, Go
Frameworks and Libraries: Spring Boot, Spring Framework, Hibernate/JPA, React,
Redux, ASP.NET, WebForms, MVC, jQuery
Databases and Caching: PostgreSQL, Redis, Microsoft SQL Server, SQLite
Cloud and Infrastructure: AWS, Azure, Kubernetes (K8s), Helm, Docker, Docker
Compose, Nginx, Netlify
Messaging and Communication: Apache Kafka, gRPC, RESTful APIs, WebSocket,
JSON-RPC 2.0, custom JSON-RPC, server-to-server and client-server communication
Testing: JUnit, Mockito, Testcontainers
Build, CI/CD, and Monitoring: Gradle, Maven, Jenkins, Grafana, Flyway
Development Tools: Git, Jira, JDBC, Lombok
 AI-Powered Development Tools: OpenAI Codex, Kiro
Operating Systems: Linux (Ubuntu), macOS, Windows

Professional Experience
GlobalLogic
Middle Java Software Engineer
March 2025 – Present

Manufacturing Hi-Tech Project — Under NDA

Description: Enterprise-level system designed for persistent file transfer and secure data
management across the platform. The product is a cloud-agnostic SaaS solution.

Technologies: Java, Spring Boot, PostgreSQL, Kubernetes, Helm, gRPC, Git, Jira, Gradle,
Docker, Hibernate/JPA, Apache Kafka, Redis, Flyway, RESTful APIs, JUnit, Mockito,
Testcontainers, Jenkins, Grafana, AWS

Responsibilities:

Designed and implemented functional and non-functional requirements for scalable, high-
performance microservices using Java and Spring Boot.
Participated in Agile ceremonies, including backlog refinement and technical requirement
analysis in Jira.
Authored and maintained technical documentation for RESTful APIs and gRPC services.
Troubleshot and resolved complex environment and deployment issues using Kubernetes,
Helm, and Grafana.
Collaborated with QA engineers and cross-functional teams to ensure seamless system
integrations and high product quality.

Fixed-Term Contracts
May 2024 – March 2025

Lucrum Wallet

Role: Full-Stack Developer and Cloud Engineer

Description: Crypto card platform for securely managing digital assets, with integrations
involving blockchain technology, payment gateway systems, and a card issuer.

Technologies: Java, Spring Framework, Spring Boot, Lombok, Docker, Docker Compose,
Nginx, Hibernate, JDBC, Git, Jira, Maven, JUnit, Azure, React, TypeScript, Redux, Axios,
Tailwind CSS

Responsibilities:

Developed front-end and back-end components and ensured seamless integration between
them.
Led the development team under the supervision of a software architect and conducted
code reviews.
Managed production deployments.
Designed and implemented new features based on business requirements.

VeniVidiTap

Role: Full-Stack Developer and Cloud Engineer

Description: Telegram mini-app tap game with 50,000 users.

Technologies: Java, Spring Framework, Spring Boot, Lombok, Docker, Docker Compose,
Nginx, Hibernate, JDBC, Git, Maven, JUnit, Azure, React, TypeScript, Axios, Tailwind CSS, Go,
SQLite

Responsibilities:

Developed full-stack features.
Implemented functional and non-functional requirements based on business needs.
Managed CI/CD pipelines and cloud infrastructure.
Provided on-call support and technical troubleshooting.

Project Under NDA

Role: Solidity Developer, Front-End Developer, and Cloud Engineer

Description: Presale launch platform for a meme token.

Technologies: Solidity, React, Netlify

Responsibilities:

Developed a smart contract using Solidity.
Built the presale platform’s user interface using React.
Managed application deployment and hosting.

Servio Soft
Developer
December 2023 – May 2024

Servio HMS — Hotel Management System

Technologies: .NET, ASP.NET, WebForms, MVC, Microsoft SQL Server, Azure, jQuery

Responsibilities:

Developed services for payment terminals, fiscal registrars, and CRM integrations.

Servio PRRO

Description: Software-based fiscal registrar solution for secure and compliant fiscal reporting.

Technologies: .NET Framework, Microsoft SQL Server

Responsibilities:

Participated in the development of internal services.

Education
Master’s Degree in Economics and Business
Kremenchuk State Polytechnic University

Languages
Ukrainian: Native
Russian: Native
English: Intermediate