I am a Java/Spring Boot developer with over 20 years of experience delivering reliable, scalable, and high-performance web applications. I help businesses modernize legacy systems, optimize performance, and extend existing applications without costly rewrites.
I worked on designing and implementing REST APIs with Spring Boot, fixing legacy and poorly performing backend code, API integrations with third-party systems, troubleshooting production issues and stabilizing systems.
As a front-end framework I use ZK. Having worked with ZK since version 3 through ZK 10, I bring deep technical insight and practical experience. Over the last 5 years, I have integrated Keikai into enterprise applications to deliver advanced spreadsheet-based business solutions.
Whether you need long-term support, performance optimization, or new feature development, I deliver clean, maintainable solutions across CRM, ERP, e-commerce, and custom systems — including third-party integrations, cloud services, and custom ZK components.
I’m an official implementation partner of ZK, recognized for delivering
enterprise-grade solutions using ZK and Keikai.
View ZK announcement →
I engage with clients either directly as an independent Java/Spring Boot specialist, or as a sales and engagement manager representing Quontex .
Work directly with me as a senior Java/Spring Boot specialist.
Upgrade and refactor existing applications to improve performance, security, and maintainability.
Migration from older versions, modernization, phased roll-outs.
Identify bottlenecks and optimize both server-side and UI layers.
JVM profiling, rendering optimization, async processing, caching strategies.
Integrate applications with enterprise backends, third-party services, and microservice architectures.
I work with clients on behalf of Quontex to structure and launch dedicated development teams tailored to enterprise project needs.
My role covers presales consulting, engagement setup, delivery coordination, and long-term partnership management, ensuring that Quontex teams deliver predictable and scalable results.
Quontex assembles and delivers dedicated development teams to execute enterprise IT projects from planning to production. I support clients throughout the engagement lifecycle — from initial requirements and team setup to delivery alignment and long-term cooperation.
Team formation, delivery coordination, commercial alignment, and ongoing client engagement.
Let’s discuss how I can support your project or consulting needs.
I usually respond within 1 business day.
