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Ion Bazavan

@ionbazavan

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Backend software engineer at Adyen who built Java integrations connecting its PSP to Salesforce.

Romania

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At Adyen, I built and owned Java backend integrations connecting Adyen's PSP to Salesforce and internal systems. I also implemented Kafka and gRPC event processing for reliable, real-time communication across distributed systems.

At Ximedes, I built backend services for a merchant onboarding platform covering KYC/KYB/CDD checks, risk assessment, and periodic reviews. I transitioned from Java to Kotlin and contributed to the React frontend.

At Deloitte Netherlands and Deloitte Digital Austria, I delivered event-driven microservices and supported a flagship loyalty program. Earlier, at IT Smart Systems, I developed and maintained web applications alongside senior developers and leads.

Experience

Work history, roles, and key accomplishments

Software Engineer

Adyen

Aug 2023 - Apr 2026 (2 years 8 months)

Built and owned backend integrations in Java connecting Adyen's PSP to Salesforce and internal systems. Designed middleware for reliable communication and implemented event-driven data processing with Kafka and gRPC.

Java Kafka gRPC Salesforce Event Driven Architecture Microservices Integration Distributed Systems

Software Engineer

Ximedes

Nov 2021 - Aug 2023 (1 year 9 months)

Built backend services for a merchant onboarding platform in payments, covering KYC/KYB/CDD checks and risk assessment. Delivered additional microservices across FinTech projects and transitioned from Java to Kotlin.

Kotlin Java Spring Boot PostgreSQL Kafka MongoDB React DevOps AWS

Consultant / Senior Consultant

Deloitte Netherlands

Oct 2019 - Oct 2021 (2 years)

Led proposals for an event-driven microservice architecture and delivered features end-to-end with a focus on clean code and scalability. Mentored junior developers and advised clients on product trade-offs.

Java Spring Boot PostgreSQL MongoDB Kafka Python Microservices Mentorship Event Driven Architecture

Consultant

Deloitte Digital Austria

Oct 2018 - Jul 2019 (9 months)

Implemented and deployed Dockerized, high-volume microservice backends on Kubernetes for a major retailer's loyalty program. Provided post-production support and JVM performance profiling.

Java Spring Boot JPA SQL MySQL Docker Kubernetes Performance Optimization JVM

Java Developer

IT Smart Systems

Oct 2015 - Oct 2018 (3 years)

Developed and maintained web applications using Java, Spring, JavaScript, and React alongside senior developers and leads, delivering features to specification.

Java Spring Framework JavaScript React