Amsterdam/mijn-amsterdam-frontend
Oct 2024 – Feb 2026
17 Months active
Languages Used
CSSHTMLJSONJavaScriptSCSSTypeScriptYAMLtsx
Technical Skills
API DesignAPI IntegrationBackend DevelopmentCI/CDComponent RefactoringConfiguration Management
Tim van Oostrom
PROFILE
Tim Van Oostrom
Tijmen van Oostrom contributed to the Amsterdam/mijn-amsterdam-frontend repository by delivering robust user-facing features and stability improvements across a 17-month period. He engineered enhancements to authentication, invoice processing, and user profile management, focusing on maintainable API integration and resilient backend flows. Using TypeScript, React, and Node.js, Tijmen refactored data models, standardized routing, and implemented feature toggles to support safe rollouts and scalable deployments. His work included modernizing the design system, improving accessibility, and strengthening CI/CD pipelines. Through comprehensive testing and error handling, he ensured data integrity and reliability, resulting in a more maintainable, performant, and user-friendly application.
Overall Statistics
Feature vs Bugs
56%Features
Repository Contributions
263Total
Bugs
81
Commits
263
Features
103
Lines of code
272,492
Activity Months17
Your Network
45 people
Work History
February 2026
4 Commits • 3 Features
Feb 1, 2026February 2026 monthly summary for Amsterdam/mijn-amsterdam-frontend. Focused on delivering user-facing features, stabilizing data flows, and improving UI clarity for financial data. Highlights include a new inline user feedback survey, improved error handling for residents count fetches, refactored invoice status logic with updated tests, and new buyout status display components with tests.
4 Commits • 3 Features
Feb 1, 2026February 2026 monthly summary for Amsterdam/mijn-amsterdam-frontend. Focused on delivering user-facing features, stabilizing data flows, and improving UI clarity for financial data. Highlights include a new inline user feedback survey, improved error handling for residents count fetches, refactored invoice status logic with updated tests, and new buyout status display components with tests.
February 2026
January 2026
14 Commits • 6 Features
Jan 1, 2026January 2026: Amsterdam/mijn-amsterdam-frontend delivered a suite of user-value features, hardened release processes, and data quality improvements across the front-end stack. Key outcomes include enhanced user profiles, robust eMandate and payment status handling, Afis invoices UI integration, a unified feature toggle system, and OAuth workflow refinements. These efforts reduced post-release incidents, improved user onboarding and payment status visibility, and strengthened data accuracy, with broader environment consistency for faster, safer deployments.
January 2026
14 Commits • 6 Features
Jan 1, 2026January 2026: Amsterdam/mijn-amsterdam-frontend delivered a suite of user-value features, hardened release processes, and data quality improvements across the front-end stack. Key outcomes include enhanced user profiles, robust eMandate and payment status handling, Afis invoices UI integration, a unified feature toggle system, and OAuth workflow refinements. These efforts reduced post-release incidents, improved user onboarding and payment status visibility, and strengthened data accuracy, with broader environment consistency for faster, safer deployments.
December 2025
21 Commits • 10 Features
Dec 1, 2025December 2025 brings production readiness, UI modernization, and reliability improvements across Amsterdam/mijn-amsterdam-frontend. The team delivered key features, fortified routing and environment readiness, and expanded testability and observability, while continuing to modernize the design system and data handling.
21 Commits • 10 Features
Dec 1, 2025December 2025 brings production readiness, UI modernization, and reliability improvements across Amsterdam/mijn-amsterdam-frontend. The team delivered key features, fortified routing and environment readiness, and expanded testability and observability, while continuing to modernize the design system and data handling.
December 2025
November 2025
21 Commits • 8 Features
Nov 1, 2025November 2025 performance summary for Amsterdam/mijn-amsterdam-frontend. Delivered a suite of features and reliability improvements that enable 2026 product workflows, richer user data, and more robust financial processing, while tightening CI/CD for faster, safer deployments. Focused on business value through data accuracy, user visibility, and payment/compliance capabilities, with a strong emphasis on test coverage and maintainability.
November 2025
21 Commits • 8 Features
Nov 1, 2025November 2025 performance summary for Amsterdam/mijn-amsterdam-frontend. Delivered a suite of features and reliability improvements that enable 2026 product workflows, richer user data, and more robust financial processing, while tightening CI/CD for faster, safer deployments. Focused on business value through data accuracy, user visibility, and payment/compliance capabilities, with a strong emphasis on test coverage and maintainability.
October 2025
15 Commits • 6 Features
Oct 1, 2025In October 2025, the Amsterdam/mijn-amsterdam-frontend team delivered a set of high-impact features and stability improvements that advance business value and user experience. The work focused on WMO service improvements, cross-domain status handling, mobile UX, routing reliability, non-prod AFIS routing for e-mandate notifications, and observability/stability hardening. The outcomes include standardized status semantics across domains, improved mobile invoice UX, safer rollout with feature toggles, and enhanced monitoring and resilience for production systems.
15 Commits • 6 Features
Oct 1, 2025In October 2025, the Amsterdam/mijn-amsterdam-frontend team delivered a set of high-impact features and stability improvements that advance business value and user experience. The work focused on WMO service improvements, cross-domain status handling, mobile UX, routing reliability, non-prod AFIS routing for e-mandate notifications, and observability/stability hardening. The outcomes include standardized status semantics across domains, improved mobile invoice UX, safer rollout with feature toggles, and enhanced monitoring and resilience for production systems.
October 2025
September 2025
11 Commits • 6 Features
Sep 1, 2025September 2025 — Amsterdam/mijn-amsterdam-frontend Key features delivered - API Key Management Standardization: refactored API key handling by removing unused keys, standardizing the Enable-U API key usage, and clarifying configurations using SourceApiName. - Cache Key Simplification: removed stack trace data and included service names for predictable, maintainable keys. - BRP V2 Integration and Debugging Enhancements: migrated BRP data fetching to fetchBrpV2 across modules; added enhanced API response debugging and a new development endpoint for authentication token data. - BRP BRP By BSN Parameter Removal: removed gemeenteVanInschrijving parameter to fix BRP service integration. - Dependency Upgrades: updated testing, linting, and build tool dependencies to latest versions to improve security, performance, and maintainability. - Docker Build Security Hardening: hardened Docker builds by using secret mounts for SSH credentials and moving openssh-server installation to align with updated dependencies. - SMILE API Endpoint Configuration and Authentication: renamed ENABLEU_2_SMILE to SMILE API configuration and added apiKey to headers; updated references across service files to ensure proper authentication. Major bugs fixed - Fetch Multiple PERSONEN/MAATSCHAPP IDs by Profile ID: fetchPersoonOrMaatschapIdByUid now returns an array of IDs and increased search limit to 100 to cover all related PERSONEN/MAATSCHAP records. - BRP BRP By BSN Parameter Removal: removed gemeenteVanInschrijving parameter to correct BRP service integration. - WMO and Zorgned IDs Uniqueness: appended an additional identifier to ensure uniqueness and updated snapshot tests and service transformation logic. - Subsidies URL Auth and Polyfills: added authMethod to subsidies BFF URL and introduced polyfills (findLast, findIndex, findLastIndex, replaceAll) for cross-environment consistency. Overall impact and accomplishments - Strengthened security and maintainability through Docker hardening and dependency upgrades. - Improved data reliability and coverage via broader ID retrieval, uniqueness constraints, and BRP integration improvements. - Streamlined authentication/config workflows with updated SMILE config and subsidies polyfills, reducing edge-case failures in development and production. Technologies and skills demonstrated - TypeScript/Refactoring and API design clarity. - Caching strategy simplification for deterministic behavior. - Docker security practices and CI/CD hygiene. - Debugging and observability enhancements with improved API response handling. - Polyfills usage and snapshot/test maintenance.
September 2025
11 Commits • 6 Features
Sep 1, 2025September 2025 — Amsterdam/mijn-amsterdam-frontend Key features delivered - API Key Management Standardization: refactored API key handling by removing unused keys, standardizing the Enable-U API key usage, and clarifying configurations using SourceApiName. - Cache Key Simplification: removed stack trace data and included service names for predictable, maintainable keys. - BRP V2 Integration and Debugging Enhancements: migrated BRP data fetching to fetchBrpV2 across modules; added enhanced API response debugging and a new development endpoint for authentication token data. - BRP BRP By BSN Parameter Removal: removed gemeenteVanInschrijving parameter to fix BRP service integration. - Dependency Upgrades: updated testing, linting, and build tool dependencies to latest versions to improve security, performance, and maintainability. - Docker Build Security Hardening: hardened Docker builds by using secret mounts for SSH credentials and moving openssh-server installation to align with updated dependencies. - SMILE API Endpoint Configuration and Authentication: renamed ENABLEU_2_SMILE to SMILE API configuration and added apiKey to headers; updated references across service files to ensure proper authentication. Major bugs fixed - Fetch Multiple PERSONEN/MAATSCHAPP IDs by Profile ID: fetchPersoonOrMaatschapIdByUid now returns an array of IDs and increased search limit to 100 to cover all related PERSONEN/MAATSCHAP records. - BRP BRP By BSN Parameter Removal: removed gemeenteVanInschrijving parameter to correct BRP service integration. - WMO and Zorgned IDs Uniqueness: appended an additional identifier to ensure uniqueness and updated snapshot tests and service transformation logic. - Subsidies URL Auth and Polyfills: added authMethod to subsidies BFF URL and introduced polyfills (findLast, findIndex, findLastIndex, replaceAll) for cross-environment consistency. Overall impact and accomplishments - Strengthened security and maintainability through Docker hardening and dependency upgrades. - Improved data reliability and coverage via broader ID retrieval, uniqueness constraints, and BRP integration improvements. - Streamlined authentication/config workflows with updated SMILE config and subsidies polyfills, reducing edge-case failures in development and production. Technologies and skills demonstrated - TypeScript/Refactoring and API design clarity. - Caching strategy simplification for deterministic behavior. - Docker security practices and CI/CD hygiene. - Debugging and observability enhancements with improved API response handling. - Polyfills usage and snapshot/test maintenance.
August 2025
5 Commits • 2 Features
Aug 1, 2025For 2025-08, Amsterdam/mijn-amsterdam-frontend achieved stability, localization coverage, and improved build reliability through targeted dependency upgrades, enhanced testing, and routing fixes. Key features delivered include aligned core tooling and translations with robust tests, along with a router fix that ensures correct route matching. Major changes were implemented with a focus on business value and long-term maintainability. Key achievements and scope: - Dependency upgrades and tooling improvements across core packages (e.g., @babel, @esbuild, @eslint, @microsoft/applicationinsights, prettier, typescript) to reduce drift and improve developer experience. Commits: 3689252044638ab1ae812687cb5f06f0708ae934; 67d01d56e35cee61abf78d45f8978d0ce6894421. - Dependency upgrade rollback and compatibility fix to restore ESLint/TypeScript/Vite/testing library compatibility after upgrade issues. Commit: e50589982466b52a3fbe488f16417ca30093140b. - BSN translations and BRP service tests: added environment-based BSN translations and comprehensive unit tests validating data fetching and transformation. Commit: dec99bc931619658d2290dd972999b601aca9217. - Protected router route order bug fix: corrected route matching by reordering route definitions to ensure AFIS_FACTUREN is attached in the proper sequence. Commit: 0c9555fe79de07dd2d9b53a022c79cb9120de133. Overall impact: - Improved build stability and predictive deployments, reducing risk associated with dependency upgrades. - Enhanced data integrity and localization through BSN translations and BRP service tests. - More reliable navigation flow due to corrected route ordering. Technologies/skills demonstrated: - JavaScript/TypeScript, React frontend, Vite-based tooling, Babel/Esbuild, ESLint/Prettier, and localization support. - Unit testing and test coverage for BRP service; environment-based configuration patterns; contribution to tooling modernization.
5 Commits • 2 Features
Aug 1, 2025For 2025-08, Amsterdam/mijn-amsterdam-frontend achieved stability, localization coverage, and improved build reliability through targeted dependency upgrades, enhanced testing, and routing fixes. Key features delivered include aligned core tooling and translations with robust tests, along with a router fix that ensures correct route matching. Major changes were implemented with a focus on business value and long-term maintainability. Key achievements and scope: - Dependency upgrades and tooling improvements across core packages (e.g., @babel, @esbuild, @eslint, @microsoft/applicationinsights, prettier, typescript) to reduce drift and improve developer experience. Commits: 3689252044638ab1ae812687cb5f06f0708ae934; 67d01d56e35cee61abf78d45f8978d0ce6894421. - Dependency upgrade rollback and compatibility fix to restore ESLint/TypeScript/Vite/testing library compatibility after upgrade issues. Commit: e50589982466b52a3fbe488f16417ca30093140b. - BSN translations and BRP service tests: added environment-based BSN translations and comprehensive unit tests validating data fetching and transformation. Commit: dec99bc931619658d2290dd972999b601aca9217. - Protected router route order bug fix: corrected route matching by reordering route definitions to ensure AFIS_FACTUREN is attached in the proper sequence. Commit: 0c9555fe79de07dd2d9b53a022c79cb9120de133. Overall impact: - Improved build stability and predictive deployments, reducing risk associated with dependency upgrades. - Enhanced data integrity and localization through BSN translations and BRP service tests. - More reliable navigation flow due to corrected route ordering. Technologies/skills demonstrated: - JavaScript/TypeScript, React frontend, Vite-based tooling, Babel/Esbuild, ESLint/Prettier, and localization support. - Unit testing and test coverage for BRP service; environment-based configuration patterns; contribution to tooling modernization.
August 2025
July 2025
11 Commits • 4 Features
Jul 1, 2025July 2025 monthly summary for Amsterdam/mijn-amsterdam-frontend. Delivered a mix of stability improvements, accessibility fixes, and infrastructure upgrades that collectively raise reliability, user experience, and test quality. The team executed a focused set of changes across routing, data presentation, and RTM features, underpinned by stronger error handling and a refreshed testing environment.
July 2025
11 Commits • 4 Features
Jul 1, 2025July 2025 monthly summary for Amsterdam/mijn-amsterdam-frontend. Delivered a mix of stability improvements, accessibility fixes, and infrastructure upgrades that collectively raise reliability, user experience, and test quality. The team executed a focused set of changes across routing, data presentation, and RTM features, underpinned by stronger error handling and a refreshed testing environment.
June 2025
23 Commits • 7 Features
Jun 1, 2025June 2025 – Amsterdam frontend delivered a mix of user-facing enhancements, caching improvements, and stability fixes that collectively raise data quality, performance and user satisfaction across desktop and mobile. Key features were shipped, critical bugs fixed, and the codebase prepared for future scalability and service integration. The work emphasizes business value through faster, more reliable UI, improved search capabilities, and a cleaner, more maintainable design system and CMS layer.
23 Commits • 7 Features
Jun 1, 2025June 2025 – Amsterdam frontend delivered a mix of user-facing enhancements, caching improvements, and stability fixes that collectively raise data quality, performance and user satisfaction across desktop and mobile. Key features were shipped, critical bugs fixed, and the codebase prepared for future scalability and service integration. The work emphasizes business value through faster, more reliable UI, improved search capabilities, and a cleaner, more maintainable design system and CMS layer.
June 2025
May 2025
21 Commits • 6 Features
May 1, 2025Summary for 2025-05: Delivered essential frontend features and stability improvements for the Amsterdam/mijn-amsterdam-frontend, delivering business value through housekeeping, acceptance readiness, UI enhancements, and robust bug fixes. Focus areas include performance improvements from cache key updates, accessibility enhancements (WCAG), acceptance readiness with SVWI enabled, and user experience improvements via dashboard enhancements and in-app notifications.
May 2025
21 Commits • 6 Features
May 1, 2025Summary for 2025-05: Delivered essential frontend features and stability improvements for the Amsterdam/mijn-amsterdam-frontend, delivering business value through housekeeping, acceptance readiness, UI enhancements, and robust bug fixes. Focus areas include performance improvements from cache key updates, accessibility enhancements (WCAG), acceptance readiness with SVWI enabled, and user experience improvements via dashboard enhancements and in-app notifications.
April 2025
16 Commits • 4 Features
Apr 1, 2025April 2025—Amsterdam/mijn-amsterdam-frontend: delivered key frontend improvements with focus on decommissioning legacy services, data model enhancements for permits, theming/routing consolidation, and UI/UX/data display refinements. The changes reduce risk from deprecated code, improve data accuracy, and set the stage for faster feature delivery and maintainability across the frontend platform.
16 Commits • 4 Features
Apr 1, 2025April 2025—Amsterdam/mijn-amsterdam-frontend: delivered key frontend improvements with focus on decommissioning legacy services, data model enhancements for permits, theming/routing consolidation, and UI/UX/data display refinements. The changes reduce risk from deprecated code, improve data accuracy, and set the stage for faster feature delivery and maintainability across the frontend platform.
April 2025
March 2025
14 Commits • 4 Features
Mar 1, 2025March 2025 focused on security, reliability, and developer experience for Amsterdam/mijn-amsterdam-frontend. Key outcomes include: 1) Unified Enable-U API key management across services by consolidating keys into a single generic key, simplifying access control and reducing key sprawl; 2) OpenAPI data model enhancements and docs cleanup, adding nullable fields and removing outdated comments to improve client integrations and API consistency; 3) Auto-logout timer feature to improve session security with timeout warning and management; 4) Document download fix and header encoding to ensure non-ASCII filenames download reliably and with correct encoding; 5) Release pipeline template fixes to stabilize CI/CD structure and deployments.
March 2025
14 Commits • 4 Features
Mar 1, 2025March 2025 focused on security, reliability, and developer experience for Amsterdam/mijn-amsterdam-frontend. Key outcomes include: 1) Unified Enable-U API key management across services by consolidating keys into a single generic key, simplifying access control and reducing key sprawl; 2) OpenAPI data model enhancements and docs cleanup, adding nullable fields and removing outdated comments to improve client integrations and API consistency; 3) Auto-logout timer feature to improve session security with timeout warning and management; 4) Document download fix and header encoding to ensure non-ASCII filenames download reliably and with correct encoding; 5) Release pipeline template fixes to stabilize CI/CD structure and deployments.
February 2025
16 Commits • 6 Features
Feb 1, 2025February 2025 performance summary for Amsterdam/mijn-amsterdam-frontend. Focused on delivering high-value features, stabilizing critical auth flows, and improving data handling and observability to support safer releases and better user experience. Highlights include feature toggles for SVWI and overtredingen, AFIS UI enhancements, robust AFIS document ID migration, visibility controls for migrated invoices, and targeted UI readiness work for Erfpacht v2, along with a key token renewal fix.
16 Commits • 6 Features
Feb 1, 2025February 2025 performance summary for Amsterdam/mijn-amsterdam-frontend. Focused on delivering high-value features, stabilizing critical auth flows, and improving data handling and observability to support safer releases and better user experience. Highlights include feature toggles for SVWI and overtredingen, AFIS UI enhancements, robust AFIS document ID migration, visibility controls for migrated invoices, and targeted UI readiness work for Erfpacht v2, along with a key token renewal fix.
February 2025
January 2025
17 Commits • 6 Features
Jan 1, 2025January 2025 (Month: 2025-01) focused on delivering tangible business value for Amsterdam/mijn-amsterdam-frontend through user-centric UI refinements, strengthened authentication, and stability improvements. Key items included UI updates for WMO disclaimers and direct debit guidance, multi-account authentication enhancements, essential bug fixes, and platform reliability and CI/CD improvements. The work also included documentation updates to reflect the BFF scope and improved testing utilities, laying a stronger foundation for future features and deployments.
January 2025
17 Commits • 6 Features
Jan 1, 2025January 2025 (Month: 2025-01) focused on delivering tangible business value for Amsterdam/mijn-amsterdam-frontend through user-centric UI refinements, strengthened authentication, and stability improvements. Key items included UI updates for WMO disclaimers and direct debit guidance, multi-account authentication enhancements, essential bug fixes, and platform reliability and CI/CD improvements. The work also included documentation updates to reflect the BFF scope and improved testing utilities, laying a stronger foundation for future features and deployments.
December 2024
13 Commits • 7 Features
Dec 1, 2024December 2024, Amsterdam/mijn-amsterdam-frontend: Delivered production-safe feature toggles and UI/routing improvements, tightened logout flows, expanded Burgerzaken functionality, and strengthened tests and refactoring. Improvements included rollout-safe RTM toggle, environment-driven external logout URL, user-facing UI routings for passport/ID, and targeted test coverage enhancements, contributing to reliability, security, and smoother feature releases.
13 Commits • 7 Features
Dec 1, 2024December 2024, Amsterdam/mijn-amsterdam-frontend: Delivered production-safe feature toggles and UI/routing improvements, tightened logout flows, expanded Burgerzaken functionality, and strengthened tests and refactoring. Improvements included rollout-safe RTM toggle, environment-driven external logout URL, user-facing UI routings for passport/ID, and targeted test coverage enhancements, contributing to reliability, security, and smoother feature releases.
December 2024
November 2024
34 Commits • 15 Features
Nov 1, 2024November 2024 (Amsterdam/mijn-amsterdam-frontend) delivered a strong blend of new frontend capabilities and reliability improvements for invoicing, AFIS workflows, and data integrity. Key features include AFIS search capability, document/address logic with updated endpoints, startdate fix and document paragraph addition, and powerbrowser vergunningen plus fat bevindingen support. The team also delivered extensive data quality and UX improvements, such as correct mapping of payments by InvoiceReference, enhanced map location display, cookie existence checks, loosened status checks, and improved token-expiration handling. In addition, the month included targeted infrastructure and maintainability work (env template defaults, refactoring of project structure, optional chaining) to reduce future toil. These changes collectively accelerate invoice processing, improve data accuracy, tighten security, and position the product for scalable growth.
November 2024
34 Commits • 15 Features
Nov 1, 2024November 2024 (Amsterdam/mijn-amsterdam-frontend) delivered a strong blend of new frontend capabilities and reliability improvements for invoicing, AFIS workflows, and data integrity. Key features include AFIS search capability, document/address logic with updated endpoints, startdate fix and document paragraph addition, and powerbrowser vergunningen plus fat bevindingen support. The team also delivered extensive data quality and UX improvements, such as correct mapping of payments by InvoiceReference, enhanced map location display, cookie existence checks, loosened status checks, and improved token-expiration handling. In addition, the month included targeted infrastructure and maintainability work (env template defaults, refactoring of project structure, optional chaining) to reduce future toil. These changes collectively accelerate invoice processing, improve data accuracy, tighten security, and position the product for scalable growth.
October 2024
7 Commits • 3 Features
Oct 1, 2024Monthly performance summary for 2024-10 (Amsterdam/mijn-amsterdam-frontend). Delivered business-value features, reliability improvements and codebase modernization that enhance user experience, data integrity, and developer productivity. Key outcomes include: improved AFIS integration with enhanced invoice display and search; CI/DevOps improvements with Dependabot grouping and PR validation enhancements; UI polish and type-safety improvements on the parking permits page; frontend modernization to standardize HLI and Zorg pages; and nullable OpenAPI fields with accompanying tests to bolster data handling. Impact: faster, more accurate invoice/search workflows; more reliable deployments; easier maintenance and onboarding through shared components and better ESLint/CI standards; stronger data contracts with OpenAPI. Demonstrates proficiency in frontend architecture, API integration, testing, and CI tooling.
7 Commits • 3 Features
Oct 1, 2024Monthly performance summary for 2024-10 (Amsterdam/mijn-amsterdam-frontend). Delivered business-value features, reliability improvements and codebase modernization that enhance user experience, data integrity, and developer productivity. Key outcomes include: improved AFIS integration with enhanced invoice display and search; CI/DevOps improvements with Dependabot grouping and PR validation enhancements; UI polish and type-safety improvements on the parking permits page; frontend modernization to standardize HLI and Zorg pages; and nullable OpenAPI fields with accompanying tests to bolster data handling. Impact: faster, more accurate invoice/search workflows; more reliable deployments; easier maintenance and onboarding through shared components and better ESLint/CI standards; stronger data contracts with OpenAPI. Demonstrates proficiency in frontend architecture, API integration, testing, and CI tooling.
October 2024
Activity
Loading activity data...
Quality Metrics
Correctness86.0%
Maintainability85.2%
Architecture81.6%
Performance80.0%
AI Usage23.4%
Skills & Technologies
Programming Languages
CSSDockerfileHTMLJSONJavaScriptPugSCSSShellTextTypeScript
Technical Skills
API DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI MockingAPI RoutingAPI developmentAPI integrationAccessibility (WCAG)AuthenticationAzure DevOpsAzure PipelinesBackend DevelopmentBackend IntegrationBug Fixing
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline