Frank De Jonge
Software Engineer at Duna
Amsterdam, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolFrank De Jonge is a pragmatic software engineer with 15 years of experience, currently building Duna’s compliance platform end-to-end from infrastructure to observability. He blends deep backend expertise in PHP and event-sourced architectures with hands-on frontend, CI/CD and operations work, and has driven core systems from design to delivery. Previously a staff engineer at Mollie, he led a monolith-to-SOA migration, created developer tooling for event systems and guided organization-wide technology adoption. An active open-source contributor, his work appears across respected PHP projects like Flysystem, FuelPHP and League components where he improved core abstractions, refactored critical paths and added reliability features. Based in Amsterdam, he’s equally comfortable inventing reusable libraries and solving production reliability challenges—often surfacing subtle issues such as SQL quirks and checksum/visibility edge cases. Colleagues know him for shipping pragmatic, well-tested solutions that make complex, high-consistency domains maintainable.
15 years of coding experience
15 years of employment as a software developer
Havo, Profiel: Natuur & Gezondheid, Havo, Profiel: Natuur & Gezondheid at Bonhoeffer CollegeInteractive Design, Webdesign, Webtechnologies, Interactive Design, Webdesign, Webtechnologies at Mediacollege Amsterdam
Dutch, English
Stackoverflow
1,647reputation
355kreached
33answers
1question
php
top-5%
Github Skills (42)
unit-testing10
event-handling10
technical-writing10
testing10
code-standards10
databases10
adaptor10
coding-conventions10
object-oriented-programming10
flysystem10
fuelphp10
event-sourcing10
phpunit10
aws-sdk10
php10
Programming languages (16)
Github contributions (5)
thephpleague/flysystem-aws-s3-v3
Nov 2014 - Jan 2023
[READYONLY SUB-SPLIT]Flysystem Adapter for AWS SDK V3
Role in this project:
Back-end Developer
Back-end DeveloperContributions:266 commits, 81 PRs, 235 pushes in 8 years 3 months
Contributions summary:Frank focused on enhancing the AWS S3 adapter for the Flysystem library. Their contributions included refactoring the adapter, optimizing listing contents, and implementing features such as public URL generation and checksum calculations. Additionally, the user addressed bugs and improved code quality, ensuring the adapter's compatibility with the AWS S3 service. They also worked on integrating options and configurations for more flexibility.
splitflysystem-adapterflysystemphpaws-sdk
thephpleague/flysystem
Oct 2013 - Jan 2023
Abstraction for local and remote filesystems
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 releases, 26 reviews, 2208 commits in 9 years 4 months
Contributions summary:Frank primarily contributed to the backend functionality of the Flysystem library. Their work included updating visibility functionalities, adding features to the local adapter for filesystems, and making configuration options extendable within the system. Moreover, they implemented writing functionality and wrote tests to verify file writing, stream writing, setting visibility, and more. The user also added methods for handling file attributes and various file operations, showing an understanding of the core aspects of the file system abstraction.
thephpleaguevmsremoterustphp
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