Валентин

Valentyn Radchenko
Java Software Engineer
[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)
Kyiv, Ukraine

PROFESSIONAL SUMMARY

Senior Java Software Engineer with 7+ years of commercial experience designing and delivering cloud-native, distributed
microservices for high-load enterprise environments. Deep expertise in Java 17, Spring Boot, RESTful APIs, Apache
Kafka, and Kubernetes-native deployment automation. Proven technical leadership across code reviews, architectural
decisions, and mentoring. Domain experience in telecom-grade systems requiring high availability, scalability, and
rigorous CI/CD pipelines. Early adopter of AI-assisted engineering: actively uses OpenAI Codex and Claude Code to
accelerate delivery, automate boilerplate generation, and develop reusable prompt frameworks for team adoption.
Upper-Intermediate English (B2); effective collaborator in cross-functional Agile/Scrum teams.

TECHNICAL SKILLS

Languages: Java 17, SQL, Bash, YAML, JSON
Frameworks: Spring Boot, Spring Cloud, Spring Security, Spring Web MVC, Spring Data, Hibernate, JPA
Messaging: Apache Kafka
Databases: PostgreSQL, JDBC
Cloud & DevOps: Kubernetes, Helm, Helmfile, Docker, Jenkins, AWS IAM, Spinnaker, Flyway, HashiCorp Vault,
Artifactory
Testing: JUnit 5, TestNG, Mockito — unit, integration and acceptance testing
Code Quality: SonarQube, Gerrit Code Review
Build & Tools: Maven, Git, IntelliJ IDEA, VS Code, Linux
AI & Prompt Eng.: OpenAI Codex, Claude Code — AI-assisted development, prompt skill authoring, code generation,
review automation
Practices: Microservices Architecture, REST API Design, CI/CD, Agile, Scrum, AI-Augmented Engineering

PROFESSIONAL EXPERIENCE

GlobalLogic — Software Engineer
May 2021 – Present | 4+ years
Client: Major Telecom Operator — Cloud-Native Application Lifecycle Management
Stack: Java 17, Spring Boot, Spring Cloud, Apache Kafka, Kubernetes, Helm, Docker, Jenkins, PostgreSQL, JUnit 5, Mockito,
Flyway, HashiCorp Vault, AWS IAM
• Led design and development of cloud-native microservices for automated lifecycle management (deploy, scale,
upgrade, rollback) of CSAR-based telecom applications on Kubernetes.
• Architected production-grade RESTful APIs integrated with internal orchestration platforms and CI/CD workflows.
• Drove end-to-end automated testing strategy — significantly increased regression coverage and reduced
post-release defects.
• Optimised Helmfile structures and Kubernetes deployment workflows in collaboration with DevOps, improving release
reliability.
• Led technical reviews in Gerrit; enforced SOLID principles, clean architecture, and engineering best practices across
the team.
• Evolved Jenkins CI/CD pipelines with SonarQube quality gates, security scanning, and compliance checks.
• Mentored junior and mid-level engineers; conducted knowledge-sharing sessions on Spring Boot internals, Kafka
patterns, and Kubernetes.
• Integrated OpenAI Codex and Claude Code into the development workflow — automated scaffolding, code review
assistance, and documentation generation; authored reusable prompt skills adopted team-wide.

Ministry of Social Policy, Ukraine — Software Engineer
April 2018 – April 2021 | 3 years
Projects: e-malyatko, e-nanny, humanitarian aid and subsidy monetisation platform
Stack: Java, Spring Boot, Hibernate, PostgreSQL, React JS, REST
• Built backend services for humanitarian aid registration integrating with Diia (government digital platform) and state
registries.
• Designed REST APIs consumed by React JS frontends and third-party government systems.
• Developed Java AWT/Swing desktop application with RBAC, subsidy report generation, and audit-trail module.

Roshen — Network / Systems Administrator
November 2016 – December 2017
Stack: Zabbix, VMware, Linux, Windows
• Cisco router configuration, virtualisation server administration, and Zabbix infrastructure monitoring.

Oschad Bank — Network Administrator
January 2015 – November 2016
Stack: Linux, Windows, VMware, Asterisk
• Branch network setup, IP telephony implementation with Asterisk, and Windows server administration.

AI-AUGMENTED DEVELOPMENT

• OpenAI Codex: Integrated into IntelliJ IDEA and VS Code for inline code generation, refactoring suggestions, and
boilerplate automation — reducing routine coding time by an estimated 30-40%.
• Claude Code: Applied for architectural reasoning, intelligent code review, test case generation, and automated
documentation drafting within CI/CD pipelines.
• Prompt Engineering & Skill Authoring: Designed and maintains a library of reusable prompt frameworks (skills) for
team use — covering Spring Boot scaffolding, Kafka consumer templates, Kubernetes manifest generation, and
OpenAPI contract drafting.
• AI Adoption Leadership: Introduced AI-assisted PR review workflows and automated documentation generation;
runs internal workshops to upskill engineers on responsible and effective AI tooling use.

EDUCATION

National Aviation University (NAU), Kyiv, Ukraine
Engineer's Degree — Telecommunications Systems

LANGUAGES

English — Upper-Intermediate (B2)
Ukrainian — Native