ioki-mobility/ioki-ruby
Nov 2024 – Sep 2025
9 Months active
Languages Used
Ruby
Technical Skills
API DesignAPI IntegrationBackend DevelopmentCode RenamingModel DefinitionRefactoring
Serge Hänni
PROFILE
Serge Hänni
Serge contributed to the ioki-mobility/ioki-ruby repository by building and enhancing a wide range of backend features, focusing on API development, integration, and data modeling. Over nine months, Serge delivered robust Operator and Reporting API capabilities, improved geocoding and user management workflows, and strengthened error handling and test coverage. Using Ruby and Ruby on Rails, Serge applied object-oriented programming principles and rigorous code quality practices, including refactoring and linting, to ensure maintainability. The work addressed real-world needs such as reliable payment integration, scalable reporting, and operational efficiency, demonstrating depth in both technical execution and alignment with evolving business requirements.
Overall Statistics
Feature vs Bugs
85%Features
Repository Contributions
56Total
Bugs
4
Commits
56
Features
23
Lines of code
2,139
Activity Months9
Your Network
7 people
Work History
September 2025
6 Commits • 3 Features
Sep 1, 2025September 2025: Delivered major Operator API enhancements in ioki-ruby, expanding geocoding capabilities, introducing a tagging model, and fixing a critical model naming issue. These changes improve lifecycle management for geocoding sessions, enable robust geocoding search and retrieval, and add flexible metadata tagging to task lists, all contributing to operational efficiency, better data quality, and faster feature delivery for operators.
6 Commits • 3 Features
Sep 1, 2025September 2025: Delivered major Operator API enhancements in ioki-ruby, expanding geocoding capabilities, introducing a tagging model, and fixing a critical model naming issue. These changes improve lifecycle management for geocoding sessions, enable robust geocoding search and retrieval, and add flexible metadata tagging to task lists, all contributing to operational efficiency, better data quality, and faster feature delivery for operators.
September 2025
August 2025
16 Commits • 3 Features
Aug 1, 2025August 2025 highlights for ioki-mobility/ioki-ruby: Expanded the Operator API surface, stabilized core models, and improved reporting accuracy. Delivered end-to-end Operator API support for creating rides and bookings, ride series management, and enriched ride inquiries with passenger data and options to improve scheduling and customer handling. Introduced a dedicated User Management endpoint for operator workflows, and added reporting enhancements with localized_reference_timestamp and null-value filter flags. Completed a broad set of bug fixes and refactors to stabilize RideInquiry and Estimation namespaces, fix namespace/name issues, and improve create_user handling. Business impact: faster operator-led operations, more reliable data for scheduling and analytics, and a more robust, maintainable codebase.
August 2025
16 Commits • 3 Features
Aug 1, 2025August 2025 highlights for ioki-mobility/ioki-ruby: Expanded the Operator API surface, stabilized core models, and improved reporting accuracy. Delivered end-to-end Operator API support for creating rides and bookings, ride series management, and enriched ride inquiries with passenger data and options to improve scheduling and customer handling. Introduced a dedicated User Management endpoint for operator workflows, and added reporting enhancements with localized_reference_timestamp and null-value filter flags. Completed a broad set of bug fixes and refactors to stabilize RideInquiry and Estimation namespaces, fix namespace/name issues, and improve create_user handling. Business impact: faster operator-led operations, more reliable data for scheduling and analytics, and a more robust, maintainable codebase.
July 2025
4 Commits • 3 Features
Jul 1, 2025July 2025 (ioki-mobility/ioki-ruby): Focused delivery on API capabilities and reporting data models, with careful management of API lifecycle to maintain stability.
4 Commits • 3 Features
Jul 1, 2025July 2025 (ioki-mobility/ioki-ruby): Focused delivery on API capabilities and reporting data models, with careful management of API lifecycle to maintain stability.
July 2025
June 2025
4 Commits • 3 Features
Jun 1, 2025June 2025: Delivered PayPal Secure Element support for ride bookings, completed code quality improvements across the Ruby codebase, and added an unread admin notifications API. These changes enhance payment capabilities, code quality, and administrative visibility, helping to accelerate secure payments, reduce maintenance overhead, and improve operational monitoring.
June 2025
4 Commits • 3 Features
Jun 1, 2025June 2025: Delivered PayPal Secure Element support for ride bookings, completed code quality improvements across the Ruby codebase, and added an unread admin notifications API. These changes enhance payment capabilities, code quality, and administrative visibility, helping to accelerate secure payments, reduce maintenance overhead, and improve operational monitoring.
May 2025
7 Commits • 3 Features
May 1, 2025For May 2025, delivered foundational Operator API capabilities (navigation data access and bootstrap), expanded Operator API user management (settings, email preferences, last activity, segmentation), and extended Passenger API with ticketing payment method types. These changes enable streamlined operator onboarding, enhanced user customization, and improved support for ticketing flows, positioning the platform for faster onboarding and data-driven insights.
7 Commits • 3 Features
May 1, 2025For May 2025, delivered foundational Operator API capabilities (navigation data access and bootstrap), expanded Operator API user management (settings, email preferences, last activity, segmentation), and extended Passenger API with ticketing payment method types. These changes enable streamlined operator onboarding, enhanced user customization, and improved support for ticketing flows, positioning the platform for faster onboarding and data-driven insights.
May 2025
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025: Maintainability sprint for ioki-ruby. Completed codebase cleanup and test consistency improvements by removing an obsolete OpenStruct require and standardizing RSpec shared examples usage (task list model specs) to use it_behaves_like, backed by two commits (Remove obsolete `require`, Fix lint issues). These changes reduce technical debt, improve test reliability, and set a safer foundation for future feature work.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025: Maintainability sprint for ioki-ruby. Completed codebase cleanup and test consistency improvements by removing an obsolete OpenStruct require and standardizing RSpec shared examples usage (task list model specs) to use it_behaves_like, backed by two commits (Remove obsolete `require`, Fix lint issues). These changes reduce technical debt, improve test reliability, and set a safer foundation for future feature work.
February 2025
7 Commits • 2 Features
Feb 1, 2025February 2025 (2025-02) focused on stabilizing the Ruby REST client and enhancing reporting capabilities in ioki-ruby. Key features delivered include migrating the Ioki API client to Faraday's retry middleware, expanding retriable exceptions, and tightening 5xx retry behavior, with tests validating behavior under simulated network conditions. Added a new ReportPartitionInfo.estimated_row_count attribute to enable more accurate reporting. A major bug fix implemented robust handling of empty/nil/malformed API responses across endpoints, with tests ensuring correct nil/empty model returns and preserved behavior. Overall impact: higher reliability in flaky networks, more reliable data reporting, and a stronger test suite. Technologies demonstrated: Faraday integration, retry middleware, robust API client error handling, Ruby, and test-driven development.
7 Commits • 2 Features
Feb 1, 2025February 2025 (2025-02) focused on stabilizing the Ruby REST client and enhancing reporting capabilities in ioki-ruby. Key features delivered include migrating the Ioki API client to Faraday's retry middleware, expanding retriable exceptions, and tightening 5xx retry behavior, with tests validating behavior under simulated network conditions. Added a new ReportPartitionInfo.estimated_row_count attribute to enable more accurate reporting. A major bug fix implemented robust handling of empty/nil/malformed API responses across endpoints, with tests ensuring correct nil/empty model returns and preserved behavior. Overall impact: higher reliability in flaky networks, more reliable data reporting, and a stronger test suite. Technologies demonstrated: Faraday integration, retry middleware, robust API client error handling, Ruby, and test-driven development.
February 2025
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025 — ioki-mobility/ioki-ruby: Reliability, compatibility, and governance improvements. Delivered three core enhancements across the library to increase robustness, compatibility with varying input shapes, and reporting governance for better data staging. Key outcomes include a hardened retry mechanism for paginated HTTP index endpoints, more flexible sub-object type parsing, and an extended report model with a release_stage attribute. Commits underpinning these changes include: 3927518dec9873d007e45804bfa17e82136bdc67 (Remove StandardError from retry mechanism), 8647976fa2ae791ee0c8097555a72651674da337 (Fix retry of index endpoints with auto_paginate: true), e85d64fa5b46d8e8de5ff5ea1ac6ba70ca6d7fdb (Change to be less strict when parsing type of sub-objects), and 219ebb50f345af57afecb6e892ced69350084465 (Add release_stage for reports).
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025 — ioki-mobility/ioki-ruby: Reliability, compatibility, and governance improvements. Delivered three core enhancements across the library to increase robustness, compatibility with varying input shapes, and reporting governance for better data staging. Key outcomes include a hardened retry mechanism for paginated HTTP index endpoints, more flexible sub-object type parsing, and an extended report model with a release_stage attribute. Commits underpinning these changes include: 3927518dec9873d007e45804bfa17e82136bdc67 (Remove StandardError from retry mechanism), 8647976fa2ae791ee0c8097555a72651674da337 (Fix retry of index endpoints with auto_paginate: true), e85d64fa5b46d8e8de5ff5ea1ac6ba70ca6d7fdb (Change to be less strict when parsing type of sub-objects), and 219ebb50f345af57afecb6e892ced69350084465 (Add release_stage for reports).
November 2024
6 Commits • 3 Features
Nov 1, 2024November 2024 monthly summary for ioki-ruby: Delivered API renaming and partitions to align with the new Reporting API structure, enhanced Operator creation with provider_id, and added server-side report filtering. These changes strengthen API consistency, operator provisioning, and data retrieval performance. Demonstrated Ruby proficiency, API design discipline, ActiveRecord model changes, and server-side filtering for scalable reporting. Business value includes easier onboarding for partners, cleaner integration points, and more efficient data access for reporting.
6 Commits • 3 Features
Nov 1, 2024November 2024 monthly summary for ioki-ruby: Delivered API renaming and partitions to align with the new Reporting API structure, enhanced Operator creation with provider_id, and added server-side report filtering. These changes strengthen API consistency, operator provisioning, and data retrieval performance. Demonstrated Ruby proficiency, API design discipline, ActiveRecord model changes, and server-side filtering for scalable reporting. Business value includes easier onboarding for partners, cleaner integration points, and more efficient data access for reporting.
November 2024
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Quality Metrics
Correctness96.2%
Maintainability97.6%
Architecture95.4%
Performance94.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
Ruby
Technical Skills
API DesignAPI DevelopmentAPI IntegrationAPI Integration TestingBackend DevelopmentCode MaintenanceCode QualityCode RefactoringCode RenamingData ModelingDependency ManagementError HandlingHTTP ClientsLintingModel Definition
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