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Cagdas Dönmez

@cagdasdnmez

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I build enterprise Java backend systems, REST services, and financial data integrations.

Germany

Message

What I'm looking for

I'm looking for a 100% remote role where I can build enterprise Java backend services, APIs, and database-driven applications, take ownership from requirements through production, and collaborate effectively in distributed Agile teams.

At MID Technologien, I develop and maintain MIDbridge, an enterprise accounting product. I am the sole developer of the booking manager module, responsible for around 90% of its codebase and its central financial functionality.

I build backend services, REST APIs, SQL structures, and financial algorithms using Java, EJB, JDBC, Microsoft SQL Server, and JUnit. I also integrate Chargebee, Chargebee Pay, Stripe, and DATEV, work directly with customers and stakeholders as Product Owner, and support production deployments with Docker and CI/CD.

Previously, I delivered a remote enterprise support platform at Questax Systems with Spring Boot, Angular, TypeScript, MariaDB, and Docker. At General Reinsurance, I built enterprise backend applications and REST services for reinsurance products including Statistical Report 2.0, Compass, RuleManager, CaseViewer, and Compass Service.

Over more than 10 years, I have developed Java enterprise applications, automation tools, reusable components, and Java RCP plugins for Allianz Technology and HDI Systeme. I work independently in distributed Agile teams, with a strong focus on clean code, unit tests, security standards, database design, and practical technical problem-solving.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Entwickler / Product Owner

Current

MID Technologien GmbH

Sep 2024 - Present (1 year 11 months)

Developed and maintained enterprise accounting software MIDbridge, including the sole development of the booking manager module. Integrated Chargebee, Stripe, and DATEV, and collaborated directly with customers as Product Owner.

Java 8 REST JDBC Microsoft SQL Server SQL Junit Maven HTML CSS Docker SVN ChargeBee Stripe DATEV

Freiberuflicher Full-Stack Java Entwickler

Questax Systems GmbH

Oct 2023 - Jun 2024 (8 months)

Developed an enterprise support platform in a fully remote setup, implementing backend services with Spring Boot and frontend functionality with Angular. Designed MariaDB databases and Docker-based deployments.

Java Spring Boot REST Angular TypeScript MariaDB JDBC SQL Docker Gitlab Maven

Associate Systems Consultant

General Reinsurance AG

Jun 2020 - Oct 2023 (3 years 4 months)

Developed enterprise backend applications for reinsurance, including Statistical Report 2.0 and REST services. Worked with Oracle and IBM DB2 databases and collaborated in international agile teams.

Java 8 REST Hibernate JPA JDBC Oracle Database IBM DB2 SQL Maven Git Jenkins Jira

Java Entwickler

HDI Systeme AG

Sep 2019 - Mar 2020 (6 months)

Developed Java RCP plugins for enterprise insurance software.

Java Maven Git

ABS/Java RCP Entwickler

Allianz Technology

Nov 2014 - Dec 2018 (4 years 1 month)

Developed Java RCP enterprise applications, including automated UI class and binder generators. Created automation tools for nightly unit test reports and a Java-based web crawler.

Java Junit Mockito Maven Git