UnionInternationalCheminsdeFer/OSDM
Nov 2024 – Oct 2025
11 Months active
Languages Used
YAMLTypeScriptCSSDockerfileHTMLMarkdownShellVue
Technical Skills
API DesignOpenAPI SpecificationSchema DefinitionAPI IntegrationDevOpsDocker
Josef Petrak
PROFILE
Josef Petrak
Josef Petrak contributed to the UnionInternationalCheminsdeFer/OSDM repository by designing and evolving robust API specifications, focusing on travel offer, booking, and ancillary management. He implemented features such as flexible trip modeling, refund processing, and reservation linkage, while streamlining data models to reduce maintenance and integration friction. Josef applied TypeScript and YAML to define schemas and OpenAPI specifications, leveraging CI/CD automation and GitHub Actions for quality assurance. His work emphasized clear documentation, versioning, and validation, enabling reliable partner integrations and supporting complex business workflows. The depth of his contributions ensured maintainable, well-governed APIs that align with evolving industry requirements.
Overall Statistics
Feature vs Bugs
76%Features
Repository Contributions
61Total
Bugs
8
Commits
61
Features
26
Lines of code
72,073
Activity Months11
Work History
October 2025
8 Commits • 3 Features
Oct 1, 2025October 2025 – OSDM (UnionInternationalCheminsdeFer/OSDM) focused on API data model cleanup, booking/ancillary endpoint consolidation, API spec enhancements, and release documentation. The work reduces client integration complexity, improves data integrity, and aligns with the 3.7.0 release trajectory, delivering measurable business value and maintainable code changes.
8 Commits • 3 Features
Oct 1, 2025October 2025 – OSDM (UnionInternationalCheminsdeFer/OSDM) focused on API data model cleanup, booking/ancillary endpoint consolidation, API spec enhancements, and release documentation. The work reduces client integration complexity, improves data integrity, and aligns with the 3.7.0 release trajectory, delivering measurable business value and maintainable code changes.
October 2025
September 2025
8 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for UnionInternationalCheminsdeFer/OSDM: API quality improvements and automation to strengthen API contracts, reduce regression risk, and streamline future work. Delivered features that link reservations to ancillary offers, automated API spec validation, and proactive linting/schema maintenance across multiple API versions.
September 2025
8 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for UnionInternationalCheminsdeFer/OSDM: API quality improvements and automation to strengthen API contracts, reduce regression risk, and streamline future work. Delivered features that link reservations to ancillary offers, automated API spec validation, and proactive linting/schema maintenance across multiple API versions.
August 2025
9 Commits • 4 Features
Aug 1, 2025August 2025 monthly summary for UnionInternationalCheminsdeFer/OSDM: Delivered major API enhancements to support flexible trip modeling and offer querying, refined fulfillment activation and terminology, strengthened product selection validation, and updated API documentation. A targeted OpenAPI version alignment fix was included to improve downstream integration stability. These changes collectively improve support for complex itineraries, reduce integration friction, and clarify API semantics for developers and partners.
9 Commits • 4 Features
Aug 1, 2025August 2025 monthly summary for UnionInternationalCheminsdeFer/OSDM: Delivered major API enhancements to support flexible trip modeling and offer querying, refined fulfillment activation and terminology, strengthened product selection validation, and updated API documentation. A targeted OpenAPI version alignment fix was included to improve downstream integration stability. These changes collectively improve support for complex itineraries, reduce integration friction, and clarify API semantics for developers and partners.
August 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 Monthly Summary for UnionInternationalCheminsdeFer/OSDM: Key feature delivered: ReservationRelation schema enhancement introduced isIncluded to indicate whether reservations are part of a parent offer; deprecated includedReservations to streamline the data model and reduce divergence between representations. No major bug fixes were required this month; focus remained on data model cleanup and preparing for future analytics and reporting capabilities. Overall impact: simplifies and clarifies the reservation data model, reduces maintenance burden, and provides a solid foundation for bundling logic and analytics. Technologies/skills demonstrated: backend schema design, deprecation strategy, Git-based change management, and cross-functional coordination with product to align data representations.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 Monthly Summary for UnionInternationalCheminsdeFer/OSDM: Key feature delivered: ReservationRelation schema enhancement introduced isIncluded to indicate whether reservations are part of a parent offer; deprecated includedReservations to streamline the data model and reduce divergence between representations. No major bug fixes were required this month; focus remained on data model cleanup and preparing for future analytics and reporting capabilities. Overall impact: simplifies and clarifies the reservation data model, reduces maintenance burden, and provides a solid foundation for bundling logic and analytics. Technologies/skills demonstrated: backend schema design, deprecation strategy, Git-based change management, and cross-functional coordination with product to align data representations.
June 2025
6 Commits • 3 Features
Jun 1, 2025June 2025 (OSDM) monthly summary: Delivered core API enhancements and foundational spec work to accelerate partner integrations, improve price visibility, and enable API discovery and sunset planning. Focused on delivering value through new Offer Overview endpoints, API versioning capabilities, and a solid OpenAPI baseline for 3.7.0, complemented by essential specification quality fixes to ensure reliability in production and external integrations.
6 Commits • 3 Features
Jun 1, 2025June 2025 (OSDM) monthly summary: Delivered core API enhancements and foundational spec work to accelerate partner integrations, improve price visibility, and enable API discovery and sunset planning. Focused on delivering value through new Offer Overview endpoints, API versioning capabilities, and a solid OpenAPI baseline for 3.7.0, complemented by essential specification quality fixes to ensure reliability in production and external integrations.
June 2025
April 2025
9 Commits • 4 Features
Apr 1, 2025April 2025 — The team delivered targeted API enhancements in OSDM (UnionInternationalCheminsdeFer/OSDM) to improve data precision, developer experience, and operational clarity. Implemented StopBehavior for trips/offers to control stop-level detail; introduced Passenger Categories to support UI-driven passenger selection in versions 3.6.0 and 4.0.0; added optional originName/destinationName to TripSummary for human-readable location context; expanded refund offers documentation and clarified the two-step refund release and HTTP handling to reduce integration errors. While there were no high-severity bugs fixed, the work reduces support overhead and accelerates client deployments. Technologies/skills demonstrated include API versioning across v3.6/v4.0, schema/design for optional fields, and comprehensive release documentation.
April 2025
9 Commits • 4 Features
Apr 1, 2025April 2025 — The team delivered targeted API enhancements in OSDM (UnionInternationalCheminsdeFer/OSDM) to improve data precision, developer experience, and operational clarity. Implemented StopBehavior for trips/offers to control stop-level detail; introduced Passenger Categories to support UI-driven passenger selection in versions 3.6.0 and 4.0.0; added optional originName/destinationName to TripSummary for human-readable location context; expanded refund offers documentation and clarified the two-step refund release and HTTP handling to reduce integration errors. While there were no high-severity bugs fixed, the work reduces support overhead and accelerates client deployments. Technologies/skills demonstrated include API versioning across v3.6/v4.0, schema/design for optional fields, and comprehensive release documentation.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025: Key API documentation and integration improvements for UnionInternationalCheminsdeFer/OSDM. Fixed currency conversion field name typos in OSDM-online-api-v3.5.0.yml to align with the actual fields, preventing misinterpretation by clients. Added Turnit sandbox URL to the API specification to accelerate partner testing and integration. These changes improve API reliability, onboarding speed, and cross-team governance, delivering business value with minimal code changes.
2 Commits • 1 Features
Mar 1, 2025March 2025: Key API documentation and integration improvements for UnionInternationalCheminsdeFer/OSDM. Fixed currency conversion field name typos in OSDM-online-api-v3.5.0.yml to align with the actual fields, preventing misinterpretation by clients. Added Turnit sandbox URL to the API specification to accelerate partner testing and integration. These changes improve API reliability, onboarding speed, and cross-team governance, delivering business value with minimal code changes.
March 2025
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for UnionInternationalCheminsdeFer/OSDM focusing on API spec quality and stability improvements. The primary deliverable this month was a critical fix to the CurrencyConversion API specification, improving YAML integrity and preventing client integration issues. No new features shipped; instead, targeted bug remediation and rigorous spec validation were completed to support reliable releases.
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for UnionInternationalCheminsdeFer/OSDM focusing on API spec quality and stability improvements. The primary deliverable this month was a critical fix to the CurrencyConversion API specification, improving YAML integrity and preventing client integration issues. No new features shipped; instead, targeted bug remediation and rigorous spec validation were completed to support reliable releases.
January 2025
9 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for UnionInternationalCheminsdeFer/OSDM: API spec polish, data model validation, new integration support, and repository cleanup. The changes improve spec accuracy, enforce consistent purchaser data handling, enable LinkedTicket workflows, and reduce ongoing maintenance, delivering measurable business value and stronger technical alignment with v3.5 and v4.0-draft.
9 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for UnionInternationalCheminsdeFer/OSDM: API spec polish, data model validation, new integration support, and repository cleanup. The changes improve spec accuracy, enforce consistent purchaser data handling, enable LinkedTicket workflows, and reduce ongoing maintenance, delivering measurable business value and stronger technical alignment with v3.5 and v4.0-draft.
January 2025
December 2024
5 Commits • 3 Features
Dec 1, 2024December 2024 (Month: 2024-12) — UnionInternationalCheminsdeFer/OSDM monthly summary Key features delivered: - Accounting Reference Support in Fare API: Adds accountingRef field to Fare schema in v3.4 and v4.0 OSDM API drafts; enables inclusion of accounting references in fare data. - Dev Environment: Docker Compose setup for demo app: Adds docker-compose.yml to simplify local development and testing of the demo application by running osdm-demo service. - Trip collection embed enhancement: Includes TRIPS in the embed parameter for trip collection requests to ensure trip summaries are embedded as expected. Major bugs fixed: - StopPoint/StopPlace type fix and error message clarifications: Fixes type used by convertPlaceToRef to StopPlace; updates StopPlaceRef generation in TripSearchCriteria and clarifies error messages for unknown place types. - Fulfillment POST: ensure proper Content-Type and body: Adds Content-Type header and an empty body to the POST Fulfillment request to conform to the endpoint expectations and fix missing body content. Overall impact and accomplishments: - Strengthened API compatibility and data quality (new accountingRef in fares) and improved developer experience (docker-compose for demos). - Reduced integration friction through clearer error handling for place references and robust fulfillment requests. - Prepared groundwork for reliable trip data embedding in responses and smoother demo/production handoffs. Technologies/skills demonstrated: - API design and versioning (v3.4/v4.0), data modeling (Fare), and error handling. - Docker Compose for local development and testing. - HTTP semantics and request integrity (Content-Type handling). - Trip data embedding considerations for response composition.
December 2024
5 Commits • 3 Features
Dec 1, 2024December 2024 (Month: 2024-12) — UnionInternationalCheminsdeFer/OSDM monthly summary Key features delivered: - Accounting Reference Support in Fare API: Adds accountingRef field to Fare schema in v3.4 and v4.0 OSDM API drafts; enables inclusion of accounting references in fare data. - Dev Environment: Docker Compose setup for demo app: Adds docker-compose.yml to simplify local development and testing of the demo application by running osdm-demo service. - Trip collection embed enhancement: Includes TRIPS in the embed parameter for trip collection requests to ensure trip summaries are embedded as expected. Major bugs fixed: - StopPoint/StopPlace type fix and error message clarifications: Fixes type used by convertPlaceToRef to StopPlace; updates StopPlaceRef generation in TripSearchCriteria and clarifies error messages for unknown place types. - Fulfillment POST: ensure proper Content-Type and body: Adds Content-Type header and an empty body to the POST Fulfillment request to conform to the endpoint expectations and fix missing body content. Overall impact and accomplishments: - Strengthened API compatibility and data quality (new accountingRef in fares) and improved developer experience (docker-compose for demos). - Reduced integration friction through clearer error handling for place references and robust fulfillment requests. - Prepared groundwork for reliable trip data embedding in responses and smoother demo/production handoffs. Technologies/skills demonstrated: - API design and versioning (v3.4/v4.0), data modeling (Fare), and error handling. - Docker Compose for local development and testing. - HTTP semantics and request integrity (Content-Type handling). - Trip data embedding considerations for response composition.
November 2024
3 Commits • 2 Features
Nov 1, 2024In November 2024, contributed to the UnionInternationalCheminsdeFer/OSDM platform by delivering API and data-model enhancements that improve offer regional validity constraints and unify refund processing, while simplifying the data surface to reduce maintenance friction. These changes strengthen policy enforcement, accuracy of travel offers, and refund reliability, directly impacting business value for partners and passengers.
3 Commits • 2 Features
Nov 1, 2024In November 2024, contributed to the UnionInternationalCheminsdeFer/OSDM platform by delivering API and data-model enhancements that improve offer regional validity constraints and unify refund processing, while simplifying the data surface to reduce maintenance friction. These changes strengthen policy enforcement, accuracy of travel offers, and refund reliability, directly impacting business value for partners and passengers.
November 2024
Activity
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Quality Metrics
Correctness95.2%
Maintainability95.4%
Architecture95.2%
Performance91.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
CSSDockerfileHTMLMarkdownShellTypeScriptVueYAML
Technical Skills
API DesignAPI DocumentationAPI IntegrationAPI LintingAPI SpecificationCI/CDCI/CD ConfigurationCodebase OrganizationData ModelingDevOpsDockerDocumentationError HandlingFrontend DevelopmentGitHub Actions
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