pretix/pretix
Aug 2025 – Apr 2026
9 Months active
Languages Used
DjangoHTMLJavaScriptPOPythonTextMakefileTOML
Technical Skills
Backend DevelopmentBug FixBug FixingCode RefactoringDatabase MigrationsDjango
Raphael Michel
PROFILE
Raphael Michel
Over nine months, contributed to the pretix/pretix repository by delivering 69 features and resolving 43 bugs, focusing on payment reliability, invoicing, and internationalization. Leveraged Python, Django, and JavaScript to enhance backend workflows, optimize PDF rendering, and modernize plugin and permissions systems. Improved data integrity through robust database migrations and introduced containerization with Docker for streamlined deployment. Addressed security by upgrading dependencies and implementing access control protocols, while refining user experience with UI/UX improvements and localization updates. Automated email workflows, strengthened monitoring, and ensured compliance with evolving tax and invoicing standards, resulting in a more scalable and maintainable event management platform.
Overall Statistics
Feature vs Bugs
62%Features
Repository Contributions
173Total
Bugs
43
Commits
173
Features
69
Lines of code
386,804
Activity Months9
Your Network
154 peopleShared Repositories
149
HijiriMember
Antti NironenMember
AkiMember
Alexander SchwartzMember
Alois PospíšilMember
Anarion DunedainMember
Andrii AndriiashynMember
André AlmeidaMember
Andrias MagnussenMember
Work History
April 2026
6 Commits • 4 Features
Apr 1, 2026April 2026—Core reliability, security, and UX improvements across pretix/pretix. Delivered features and fixes that reduce operational risk, enable more flexible order editing, and modernize the runtime environment. Notable outcomes include: a leaner cart session lifecycle, extended order editing capabilities, stronger data-security posture, and alignment with modern runtimes. These changes collectively improved stability, accelerated delivery cycles, and reduced risk of data corruption or crashes in production.
6 Commits • 4 Features
Apr 1, 2026April 2026—Core reliability, security, and UX improvements across pretix/pretix. Delivered features and fixes that reduce operational risk, enable more flexible order editing, and modernize the runtime environment. Notable outcomes include: a leaner cart session lifecycle, extended order editing capabilities, stronger data-security posture, and alignment with modern runtimes. These changes collectively improved stability, accelerated delivery cycles, and reduced risk of data corruption or crashes in production.
April 2026
March 2026
17 Commits • 3 Features
Mar 1, 2026March 2026 delivered major security and reliability improvements in pretix/pretix, including a pluggable permissions system with UI decluttering, staff-session-aware exporters, and backend/API updates. Email rendering was optimized to reduce N+1 queries and centralized for better observability. Invoice processing and tax accuracy were enhanced with renderer readiness signaling, zero-value tax recalculation, Belgium validation, and Peppol address fixes. UI/UX improvements and Django 5.2 compatibility tweaks enhanced operator experience and platform readiness. Overall, the work delivers stronger access control, faster communications, compliant invoicing, and a smoother, more scalable product for organizers and resellers.
March 2026
17 Commits • 3 Features
Mar 1, 2026March 2026 delivered major security and reliability improvements in pretix/pretix, including a pluggable permissions system with UI decluttering, staff-session-aware exporters, and backend/API updates. Email rendering was optimized to reduce N+1 queries and centralized for better observability. Invoice processing and tax accuracy were enhanced with renderer readiness signaling, zero-value tax recalculation, Belgium validation, and Peppol address fixes. UI/UX improvements and Django 5.2 compatibility tweaks enhanced operator experience and platform readiness. Overall, the work delivers stronger access control, faster communications, compliant invoicing, and a smoother, more scalable product for organizers and resellers.
February 2026
16 Commits • 5 Features
Feb 1, 2026February 2026 monthly summary for pretix/pretix focusing on delivering business value through robust payment flows, secure and reliable messaging, UX improvements, and release readiness. Key features delivered include: Manual Payment Processing and Session Management Improvements, Email Delivery Improvements and Account Security Notifications, Security and Privacy Hardening, User-Facing UX Enhancements Across Checkout/Login/Vouchers/Localization, and Release/Versioning Updates. Major bugs fixed include metrics queue length and age calculations, and mail/ticket readiness edge cases. Overall impact highlights stronger payment reliability, improved monitoring accuracy, enhanced security posture, and a more intuitive user experience, enabling faster time-to-value and easier audits. Technologies and skills demonstrated span Python backend enhancements, monitoring instrumentation, email pipeline resiliency, security hardening, localization/i18n, and release management for stable deployment.
16 Commits • 5 Features
Feb 1, 2026February 2026 monthly summary for pretix/pretix focusing on delivering business value through robust payment flows, secure and reliable messaging, UX improvements, and release readiness. Key features delivered include: Manual Payment Processing and Session Management Improvements, Email Delivery Improvements and Account Security Notifications, Security and Privacy Hardening, User-Facing UX Enhancements Across Checkout/Login/Vouchers/Localization, and Release/Versioning Updates. Major bugs fixed include metrics queue length and age calculations, and mail/ticket readiness edge cases. Overall impact highlights stronger payment reliability, improved monitoring accuracy, enhanced security posture, and a more intuitive user experience, enabling faster time-to-value and easier audits. Technologies and skills demonstrated span Python backend enhancements, monitoring instrumentation, email pipeline resiliency, security hardening, localization/i18n, and release management for stable deployment.
February 2026
January 2026
30 Commits • 13 Features
Jan 1, 2026January 2026 (2026-01) delivered a focused set of performance optimizations, reliability improvements, and modernization efforts across pretix/pretix. Notable work includes a major PDF rendering performance improvement, invoicing and invoicing-related compliance enhancements, and upgrades to documentation and release readiness. The month also advanced pricing integrity and mail/communication reliability, alongside targeted quality fixes that reduce edge-case failures in check-in, cart calculations, and address handling. The combined effect is faster invoice processing, more compliant and scalable invoicing, more robust internationalization support, and a cleaner, more maintainable codebase ready for the 2026 release cadence.
January 2026
30 Commits • 13 Features
Jan 1, 2026January 2026 (2026-01) delivered a focused set of performance optimizations, reliability improvements, and modernization efforts across pretix/pretix. Notable work includes a major PDF rendering performance improvement, invoicing and invoicing-related compliance enhancements, and upgrades to documentation and release readiness. The month also advanced pricing integrity and mail/communication reliability, alongside targeted quality fixes that reduce edge-case failures in check-in, cart calculations, and address handling. The combined effect is faster invoice processing, more compliant and scalable invoicing, more robust internationalization support, and a cleaner, more maintainable codebase ready for the 2026 release cadence.
December 2025
17 Commits • 7 Features
Dec 1, 2025December 2025 delivered stability, compliance, and performance enhancements across pretix/pretix, with a focus on payment reliability, user experience, and scalability. Key outcomes include CAMT bank transfer import, robust bank transfer slug matching, improved cart and voucher validation to prevent invalid purchases, VAT/tax enforcement enhancements, startup and email efficiency optimizations, and UI polish to ensure a consistent, usable interface across flows.
17 Commits • 7 Features
Dec 1, 2025December 2025 delivered stability, compliance, and performance enhancements across pretix/pretix, with a focus on payment reliability, user experience, and scalability. Key outcomes include CAMT bank transfer import, robust bank transfer slug matching, improved cart and voucher validation to prevent invalid purchases, VAT/tax enforcement enhancements, startup and email efficiency optimizations, and UI polish to ensure a consistent, usable interface across flows.
December 2025
November 2025
23 Commits • 13 Features
Nov 1, 2025November 2025 (Month 2025-11): Delivered a focused set of security, reliability, and UX improvements across pretix/pretix with traceable changes. Key security hardening was achieved through a Django upgrade to address CVE-2025-64459, reducing risk exposure for customers and data. UX and product clarity were improved with a real-time cart item count on the product list and branding consistency updates. Onboarding and admin debugging were strengthened by auto-verifying invited user emails and enabling admins to inspect invoices for debugging non-PDF invoice renderers. Invoicing and financial workflow reliability were enhanced by increasing the retry interval for invoice processing and by expanding invoice issuer metadata (state field). These changes are supported by concrete commits enabling easier maintenance and quicker incident response.
November 2025
23 Commits • 13 Features
Nov 1, 2025November 2025 (Month 2025-11): Delivered a focused set of security, reliability, and UX improvements across pretix/pretix with traceable changes. Key security hardening was achieved through a Django upgrade to address CVE-2025-64459, reducing risk exposure for customers and data. UX and product clarity were improved with a real-time cart item count on the product list and branding consistency updates. Onboarding and admin debugging were strengthened by auto-verifying invited user emails and enabling admins to inspect invoices for debugging non-PDF invoice renderers. Invoicing and financial workflow reliability were enhanced by increasing the retry interval for invoice processing and by expanding invoice issuer metadata (state field). These changes are supported by concrete commits enabling easier maintenance and quicker incident response.
October 2025
28 Commits • 13 Features
Oct 1, 2025October 2025 monthly summary focusing on business value and technical achievements across pretix/pretix. Delivered features improving data isolation, reliability, performance, and customer-facing communications, alongside code quality and security improvements. Highlights include standardizing exporter's read consistency, bulk import improvements, and enhanced safety checks for critical operations.
28 Commits • 13 Features
Oct 1, 2025October 2025 monthly summary focusing on business value and technical achievements across pretix/pretix. Delivered features improving data isolation, reliability, performance, and customer-facing communications, alongside code quality and security improvements. Highlights include standardizing exporter's read consistency, bulk import improvements, and enhanced safety checks for critical operations.
October 2025
September 2025
18 Commits • 6 Features
Sep 1, 2025September 2025 monthly development summary for pretix/pretix. Delivered high-impact features that enhance plugin extensibility, user experience, and invoicing reliability, while strengthening security and maintainability. Key deliveries include conditional waiting-list visibility tied to product availability, public calendar subevents filtering via plugin signals, and comprehensive invoicing improvements with reliable email delivery, PDF customization, and plugin data attachment. Also shipped plugin UI enhancements to inject forms above formsets and enforced export scheduling permissions to prevent misuse. These efforts reduce support friction, improve clarity in zero-total checkout flows, enable richer invoicing customization, and lay groundwork for scalable plugin integrations. Demonstrated expertise in Django-based development, plugin architecture, signals, UI/UX improvements, and build/deploy automation (dependencies upgrades, npm ci, docs).
September 2025
18 Commits • 6 Features
Sep 1, 2025September 2025 monthly development summary for pretix/pretix. Delivered high-impact features that enhance plugin extensibility, user experience, and invoicing reliability, while strengthening security and maintainability. Key deliveries include conditional waiting-list visibility tied to product availability, public calendar subevents filtering via plugin signals, and comprehensive invoicing improvements with reliable email delivery, PDF customization, and plugin data attachment. Also shipped plugin UI enhancements to inject forms above formsets and enforced export scheduling permissions to prevent misuse. These efforts reduce support friction, improve clarity in zero-total checkout flows, enable richer invoicing customization, and lay groundwork for scalable plugin integrations. Demonstrated expertise in Django-based development, plugin architecture, signals, UI/UX improvements, and build/deploy automation (dependencies upgrades, npm ci, docs).
August 2025
18 Commits • 5 Features
Aug 1, 2025August 2025 (2025-08) delivered substantial business value across localization, plugin modernization, performance, and data integrity for pretix/pretix. Notable outcomes include internationalization improvements across Django localization files for Romanian, Russian, and German wordlists; migration of the bank transfer plugin to a hybrid architecture with organizer-level activation and corresponding test/fixture updates; performance gains from client-side address form data caching that reduce redundant XHR calls; enhanced order overview with accurate line-level cancellation filtering and display; and a set of critical data handling and UI bug fixes (transmission info, invoice address data access, lazy translation evaluation, and translation loading order). Release version bumps to reflect the new cycle (2025.8.0.dev0) accompany these changes.
18 Commits • 5 Features
Aug 1, 2025August 2025 (2025-08) delivered substantial business value across localization, plugin modernization, performance, and data integrity for pretix/pretix. Notable outcomes include internationalization improvements across Django localization files for Romanian, Russian, and German wordlists; migration of the bank transfer plugin to a hybrid architecture with organizer-level activation and corresponding test/fixture updates; performance gains from client-side address form data caching that reduce redundant XHR calls; enhanced order overview with accurate line-level cancellation filtering and display; and a set of critical data handling and UI bug fixes (transmission info, invoice address data access, lazy translation evaluation, and translation loading order). Release version bumps to reflect the new cycle (2025.8.0.dev0) accompany these changes.
August 2025
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Quality Metrics
Correctness93.8%
Maintainability88.6%
Architecture87.6%
Performance87.2%
AI Usage21.0%
Skills & Technologies
Programming Languages
CSSDjangoDjango Template LanguageDockerfileHTMLJavaScriptJinjaMakefileMarkdownPO
Technical Skills
API DevelopmentAPI developmentAPI integrationBackend DevelopmentBackend developmentBug FixBug FixingBuild ProcessBulk OperationsCI/CDCSSCeleryCode MaintenanceCode RefactoringConfiguration
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline