Halit Dönmez
Senior Software Engineer at Postcode Loterij
Netherlands
Summary
👤
Senior🎓
Top SchoolHalit Dönmez is a Senior Software Engineer with 10 years of experience designing and operating large-scale, high-throughput payment systems and data platforms across fintech and banking. He specializes in Java/Spring Boot microservices, event-driven architectures (JMS), PostgreSQL, and cloud-native deployments on AWS and GCP, with a track record of improving throughput and reliability in 24/7 production environments. At Postcode Loterij he owns end-to-end payment workflows—bank integrations, settlement, reconciliation—and reduced end-to-end processing time by ~35% while increasing success rates to ~99.9%. His background spans data engineering with Apache Spark/BigQuery, infrastructure as code, and ML experimentation, and he contributes to open-source tooling such as UI enhancements to the popular DBeaver SQL client. A Swedish citizen based in the Netherlands, he combines deep operational ownership and mentoring with a knack for pragmatic system design and cross-functional delivery.
10 years of coding experience
9 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at KTH Royal Institute of TechnologyBachelor’s Degree Computer Engineering, Bachelor’s Degree Computer Engineering at Bilkent University
English, German, Swedish, Dutch
Github Skills (7)
javas10
java10
windows-gui9
sql9
databases8
database8
ui-design8
Programming languages (4)
Github contributions (5)
dbeaver/dbeaver
Jun 2020 - Oct 2020
Free universal database tool and SQL client
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:22 commits, 2 PRs, 24 comments in 4 months
Contributions summary:Halit primarily contributed to the UI and feature enhancement of the DBeaver application. They added functionality to open selected text in a web browser and implemented a new action to open content values in an external editor. Their work involved modifying SQL editor and content value manager components, indicating involvement across different UI and data handling parts of the application. The commits also touched on the application's core functionality by introducing new actions and integrating them with existing menus.
sqlserversql-clientdbeaverredshiftgui
halitanildonmez/RVO2WithAStar
Feb 2018 - Feb 2019
Contributions:7 commits, 5 pushes, 1 branch in 1 year
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