Андрій

ANDRII S.
Senior Java Backend Engineer | Enterprise CMS (AEM)​
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SUMMARY

Senior Java Backend Engineer with 12+ years of experience designing and
building enterprise-grade backend and distributed systems. Strong
expertise in Java (8–17), the Spring ecosystem, Hibernate/JPA, and
relational databases including MySQL and PostgreSQL.

Experienced in building REST and GraphQL APIs, event-driven
architectures, and scalable integration solutions using messaging platforms
such as Kafka and RabbitMQ. Skilled in developing high-performance
backend services and handling large-scale data processing workflows.

Extensive experience working with Adobe AEM and OSGi-based enterprise
platforms, focusing on backend services, integration layers, messaging
workflows, and high-availability systems. Proven background in L3
production support, performance optimization, and cloud-based
deployments (AWS, Azure).

Experienced in Agile delivery environments with CI/CD pipelines and
cross-functional collaboration across distributed teams.
PROFESSIONAL EXPERIENCE

Senior Java / AEM Developer
Cognizant Netcentric | 10/2024 – Present

●​ Design and implement backend services within Adobe AEM using
Java and OSGi-based architecture
●​ Develop integration layers between CMS, enterprise systems, and
external APIs
●​ Implement REST and GraphQL APIs backed by relational and
NoSQL databases
●​ Build asynchronous workflows and messaging-driven processes
using Kafka
●​ Optimize performance of high-traffic enterprise platforms
●​ Support cloud-based deployments (AWS, Azure) and CI/CD-driven
delivery
●​ Contribute to architectural decisions in distributed Agile teams

Senior Java / AEM Developer
Maark | 03/2022 – 10/2023

●​ Developed backend services for enterprise CMS-driven platforms
(Adobe AEM)
●​ Designed and implemented REST APIs and complex system
integrations
●​ Built background jobs, schedulers, and event-driven processing
components
●​ Optimized database queries and improved system performance
●​ Participated in large-scale content and data migration initiatives
 ●​ Collaborated with DevOps and frontend teams to deliver end-to-end
solutions

Senior Java Developer
Valtech | 10/2019 – 02/2022

●​ Designed and maintained enterprise backend services using Java
and Spring Boot
●​ Implemented RESTful APIs and integration services for multi-site
environments
●​ Worked with modular OSGi-based architectures
●​ Developed solutions for distributed systems and cross-region
deployments
●​ Improved system stability and performance through profiling and
refactoring
●​ Participated in large-scale deployments and release coordination

Senior Java Developer
DataArt | 04/2019 – 05/2021

●​ Developed enterprise backend applications using Java, Spring, and
RESTful APIs
●​ Designed scalable persistence layers using PostgreSQL and Oracle
●​ Implemented event-driven architecture using Apache Kafka and
RabbitMQ
●​ Designed producers and consumers with retry logic and
error-handling strategies
●​ Applied idempotency patterns to ensure reliable message processing
●​ Participated in cloud deployments on AWS and Azure
●​ Supported CI/CD pipelines and containerized environments (Docker)
Java Developer
Luxoft | 2014 – 2018

●​ Developed enterprise backend services using Java and Spring Boot,
building scalable RESTful APIs
●​ Designed backend services and system integrations for
high-availability enterprise platforms
●​ Implemented database interaction layers using Hibernate/JPA with
Oracle databases
●​ Managed transaction processing, data integrity, and consistency in
distributed systems
●​ Provided Level 3 (L3) production support, performing root cause
analysis and resolving critical production incidents
●​ Collaborated closely with Service Desk (L1/L2) teams to troubleshoot
and resolve high-priority issues
●​ Performed performance tuning, query optimization, and system
stability improvements
●​ Contributed to system architecture discussions and technical design
decisions

Java / Android Developer
Wildec | 03/2010 – 02/2014

●​ Developed Java-based mobile and backend-integrated applications
●​ Built Android applications using Java and early Android SDK versions
●​ Developed J2ME solutions for legacy mobile devices
●​ Implemented client-side logic and integrated with backend services
●​ Optimized applications for performance and limited device resources