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Paulina Kujawa

PROFILE

Paulina Kujawa

Over 19 months, contributed to unicef/hope by building and refining a robust backend platform focused on data integrity, scalable APIs, and reliable workflows. Leveraging Python, Django REST Framework, and TypeScript, delivered features such as advanced filtering, role-based access control, and program lifecycle management, while migrating legacy GraphQL endpoints to REST for maintainability. Enhanced test automation and CI/CD pipelines, stabilized end-to-end workflows, and improved admin and data import interfaces. Emphasized code quality through refactoring, linting, and comprehensive unit testing, resulting in faster release cycles, safer data operations, and a more resilient system supporting UNICEF’s evolving data and governance needs.

Overall Statistics

Feature vs Bugs

59%Features

Repository Contributions

913Total
Bugs
160
Commits
913
Features
227
Lines of code
1,666,841
Activity Months19

Your Network

20 people

Work History

May 2026

11 Commits • 2 Features

May 1, 2026

May 2026 monthly summary for unicef/hope: Delivered key features and reliability improvements to the User Permissions System and Household Withdrawal workflow, delivering business value through performance, data integrity, and maintainability.

April 2026

41 Commits • 15 Features

Apr 1, 2026

April 2026 – unicef/hope monthly summary: Admin UX and performance enhancements delivered in the backend and UI, a unified withdrawal workflow with admin support for withdraw/unwithdraw/mass operations, strengthened test infrastructure and wider coverage, and enhanced internal messaging capabilities. These changes reduce admin latency, improve data integrity and reliability, and enable faster and safer decision-making.

March 2026

83 Commits • 20 Features

Mar 1, 2026

March 2026 – unicef/hope: Delivered migration safeguards and ES integration controls, expanded test coverage, and strengthened CI/test reliability. Implemented slug sanitation and threading for migrations, an ES enabled flag for controlled rollout, and groundwork for slug-to-code migration. Improved test stability across CI with teardown fixes and grouping enhancements, reducing flaky behavior and accelerating release readiness. These improvements reduce production risk, improve observability, and enable safer, faster iterations.

February 2026

44 Commits • 10 Features

Feb 1, 2026

Monthly work summary for 2026-02 focusing on key accomplishments, platform improvements, and business impact for unicef/hope. Delivered comprehensive test suite refactor, data utilities, periodic data update features, and stability improvements; achieved architecture modernization and code quality gains.

January 2026

18 Commits • 2 Features

Jan 1, 2026

January 2026 delivered key data reliability and program visibility improvements for unicef/hope. Highlights include a data integrity fix for missing households in social worker programs via a one-time script and cleanup; data import enhancements enabling household ID-based imports for social worker programs and a dedicated fix path during registration data imports; and an end-to-end Active Programs Filtering System with UI, API, and querying enhancements plus tests. These changes improved data accuracy, reduced manual cleansing, streamlined registrations, and empowered program-facing teams with faster, more reliable search and reporting capabilities.

November 2025

54 Commits • 15 Features

Nov 1, 2025

Summary for 2025-11: Delivered stability, quality, and user-facing enhancements in the unicef/hope repository. This month focused on stabilizing the test suite, improving code quality, and advancing data-entry UX, data filtering, and API capabilities. Release readiness was enhanced through version housekeeping, while backend improvements tightened performance and reliability for search and reporting. Key features delivered: - Unit testing and validation fixes to restore test reliability and core functionality (commits: c14094955286ec1aa74bf3cb70cbdac46e206a0a; 7b40265cb2b0a835fc325ea4dad966f9f7a01060; b33d07fff4867bca03647f7c0447db098709e4a5) - Code style formatting and lint improvements to raise maintainability and code quality (commits: 7a9c05b880cb67d2fdc5203a7793b1a55e9839f4; a5942de844f5f2a30cd71792bd7859ca0bfd6922; 651237b99cde091378d3324a08c9e9342e55fbb9) - Release readiness: version bump and release housekeeping to streamline deployment (commits: 550050bc6df1117011d1fbb1b4c93e77d03138e3; 53fd78f2bd8a9e29a06aed20a97539bb94e7c54a) - Add autocomplete fields to assist data entry and reduce errors (commit: 3b2502d9fc75483419d12c3bcc7c78155040c2e2) - Sampling and filter enhancements to improve data quality and report relevance (commits: e63b6389e02defc6ec99b868a648c3fcb6582e8f; 95c0f9b88d6b3f9a28884e3f2c9a7edc01705db2) Major bugs fixed: - Reverts and test/config adjustments to stabilize CI and tests (commits: 461fe08dd1791f979064224149ea214414f6fb28; b6b58bdff72cac37ff7061796f5f9a817a4fd89e) - URL fixes to ensure correct routing and endpoints (commit: d642d8bd4bcea8a29e9e9432f27682e28bee9be9) - Consolidated test fixes and cleanup to stabilize test suite (commits: 5b9c791d81cecf2f444efaadf48763c460d649ba; bd50e735790e76876202ca5a34f836bfe3771520; 6a7690273ada96916e0f33ff1866d6e948d3fc92; 7e017eb0c143975281bba90cae47d97c7563ae16; d34f40a0441abed949d4f7c0e61497d8a98d778f; 54669ced65504755395969ebbdabbacf21ca66d1; 953967498a66024533bed064aa114b97e473dba9) - PPLAN list: revert program changes to avoid regression (commit: 272dc3c00c9689eaf21e5fb1cd2660d8df9979a3) Overall impact and accomplishments: - Higher release confidence and faster time-to-prod due to stability, linting, and release hygiene. - Improved data-entry UX and data quality through autocomplete and sampling enhancements. - Stronger search and API foundations enabling more accurate reporting and scalable front-end experiences. - Reduced risk of regression through targeted test/fix work and end-to-end test updates. Technologies and skills demonstrated: - Python, Django/Django REST Framework, API design and pagination, and viewset enhancements. - Rigorous unit/integration testing, test/config maintenance, and end-to-end test updates. - Code quality practices: formatting, linting, and code cleanup. - Performance and data modeling considerations: prefetch usage, local type generation, and serializer tweaks for scalable lists. - Office search, grievance/search edge-case handling, and general search robustness.

October 2025

7 Commits • 2 Features

Oct 1, 2025

October 2025 focused on stabilizing admin data retrieval, expanding area filtering capabilities, and improving code quality for improved scalability and reliability in unicef/hope. The work ensures consistent data access to administrative areas, robust search and filtering behavior, and a cleaner codebase with stronger type safety and tests, supporting long-term governance and admin UX improvements.

September 2025

14 Commits • 3 Features

Sep 1, 2025

September 2025 monthly summary for unicef/hope: Delivered a set of features improving data integrity, UI fidelity, and data pipelines, with robust tests and safe data operations. Notable outcomes include bulk merge for PDU online edits, improved frontend labeling, data model and UI/test improvements for periodic updates, and deduplication/atomic transaction fixes that prevent partial writes and reduce data integrity risks. These efforts translate into faster safe edits, improved data quality, and stronger CI/test coverage.

August 2025

72 Commits • 23 Features

Aug 1, 2025

August 2025 (unicef/hope) monthly summary: Delivered multiple high-impact features across the PDU domain, improved maintainability through code quality and linting, and strengthened data integrity with migrations and rounds_covered support. Key outcomes include enabling multi-task execution in CeleryEnabledModel, overhauling PDU Xlsx templates workflows and admin, introducing PeriodicDataUpdateOnline with rounds_covered, expanding PDU Online with permissioned bulk actions and edit workflows, and establishing a robust PDU Online Edit core with enhanced edit_data, save_data, and tests. Together these work streams deliver greater scalability, admin usability, data accuracy, and faster, safer deployments.

July 2025

67 Commits • 20 Features

Jul 1, 2025

July 2025 was characterized by substantial feature delivery, extensive test coverage, and targeted bug fixes across the grievance management stack and related data services. Key enhancements include a Grievance data model update for HH/IND fields, expanded testing for grievance workflows and RDI imports, and API/serialization improvements that improve data quality and safety. Frontend and backend readiness for new governance flags (exclude_external_collectors) was delivered, along with program data enhancements (PDU details) and improved data visibility in the Managerial Console. In addition, critical bugs affecting accountability requests, payment verification REST flows, permissions checks, and E2E stability were fixed to reduce production risk and improve release confidence.

June 2025

118 Commits • 27 Features

Jun 1, 2025

June 2025 monthly summary for unicef/hope: The development effort delivered a comprehensive set of program lifecycle capabilities, strengthened data integrity, and a streamlined API surface. We advanced REST-based program workflows while de-emphasizing GraphQL surface as tests and code were migrated to REST. This produced meaningful business value by accelerating end-to-end workflows, reducing fragility, and improving maintainability across the program domain. Key outcomes include enhanced program actions (activate, finish, create, update, copy, update_partners_access) with complete serializers and validations, slug regeneration on programme_code updates to preserve URL stability, and expanded test coverage for creation, detail, and destruction flows. PDU error handling improvements and fixes to flex attribute ID handling further increased reliability in production data scenarios. In addition, the program copy enhancements, view/serializer improvements, and reusable validation utilities contributed to more consistent behavior and faster delivery of downstream features. Finally, the GraphQL surface was cleaned up and relevant data moved to REST, with targeted test restructurings that improved CI stability.

May 2025

90 Commits • 37 Features

May 1, 2025

May 2025 highlights for unicef/hope: foundational setup, a major API uplift for grievances, and targeted performance and quality improvements that drive security, scalability, and faster feature delivery. Key features delivered include: - Project initialization (scaffolding and baseline files) to enable rapid onboarding and consistent project structure. - Grievance permissions: introduced GrievancePermissionsMixin with program- and area-based access controls and migrated permission checks to BaseViewSet for consistent security across global and program-nested endpoints. - Expanded grievance API surface: global and program-nested Grievance viewsets; detail/list serializers; ticket detail classes; and serializers for individuals, programs, and sanctions, plus a split serializer architecture for grievance_ticket and ticket_detail. - Performance and data integrity: added grievance caching to boost read performance and implemented serialization/mapping enhancements to reduce runtime overhead. - REST querying and filtering: improved REST-based filtering (cross_area_filter, filters by document type/language/program, and FSP-related filters) and optimized queries for faster responses. - Test coverage and docs: expanded REST test suites (global and program scopes), updated Swagger documentation, and refreshed admin2 serialization paths; ongoing GraphQL cleanup where applicable. - Quality refactor: code formatting improvements, removal of legacy logic, and default mixin fields to simplify maintenance and future work.

April 2025

9 Commits • 3 Features

Apr 1, 2025

April 2025 (Month: 2025-04): Delivered a set of API enhancements for unicef/hope focused on filtering reliability, security, and data serialization alignment. The work improved business value by enabling precise data queries, strengthening access control, and ensuring consistent downstream data representations.

March 2025

62 Commits • 12 Features

Mar 1, 2025

March 2025 – UNICEF Hope: slug-based program routing, pagination enhancements, permissions cleanup, slug routing cache, and API surface expansion with testing coverage. Completed migrations, improved access controls, and caching for program-level data. This work delivers cleaner URLs, safer permissions, faster reads, and stronger data integrity across programs.

February 2025

104 Commits • 18 Features

Feb 1, 2025

February 2025 (2025-02) performance summary for unicef/hope. The team delivered a key feature upgrade to program access and permission querying, strengthened API routing and viewset architecture, and substantially improved test reliability and coverage, contributing to higher security, stability, and faster release cycles. The work focused on business value, system security, and maintainability while expanding end-to-end validation for critical flows.

January 2025

79 Commits • 9 Features

Jan 1, 2025

January 2025 highlights for unicef/hope: Improved governance, reliability, and developer velocity through admin enhancements, data-model modernization, and robust test/migration infrastructure. Delivered admin UI and validations for role assignments, implemented area access checks using a new RoleAssignment model, and refactored the data model to introduce UserRole and through tables. Fixed flaky tests including year-boundary issues, expanded coverage for edge cases (householdless individuals) and permissions across multiple contexts. Strengthened partner and UNICEF structures with validations, signals for subpartner creation, and fixtures/tests aligned to UNICEF partner structure. Invested in migrations and test infrastructure to accelerate changes with safer rollouts.

December 2024

18 Commits • 3 Features

Dec 1, 2024

December 2024: Delivered a comprehensive overhaul of the Role Assignment and Permissions System in unicef/hope, reinforcing data integrity, refining permission aggregation across roles, user groups, and assignments; enhanced error reporting and cache invalidation for expired roles; updated role generation and admin commands. Implemented UNICEF ID unique constraints for households and individuals to strengthen data governance, with accompanying tests and clearer constraint naming. Improved test data and migration hygiene to boost CI reliability and prevent cross-test contamination. Additional focus on test coverage, signals, and Celery-based cache invalidation to ensure robust operations.

November 2024

17 Commits • 5 Features

Nov 1, 2024

Month: 2024-11 — Focused on delivering data exposure improvements, robust access controls, scalable communications, and data platform reliability. Achieved notable progress across user-facing API enhancements, a permissions system overhaul with caching, centralized email delivery via Mailjet with asynchronous sending, indexing and idempotent data scripting for faster lookups, and data model/config updates. Strengthened test suite and fixed data processing bug affecting children_count. These efforts improve data clarity, security, performance, and operational resilience for partners and end-users.

October 2024

5 Commits • 1 Features

Oct 1, 2024

Month 2024-10 — unicef/hope: Major API and release work completed. Geographic Data API Enhancements introduced advanced filtering, search, and ordering for country, area, and area type endpoints; date-range and related-field filters added; CountrySerializer expanded to include all fields. Tests updated to reflect the new surface. Release hygiene improved with a version bump to 2.12.2. Overall impact: richer, more queryable API data for downstream dashboards and analytics; more reliable release process and maintainability.

Activity

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Quality Metrics

Correctness89.2%
Maintainability87.6%
Architecture83.2%
Performance82.4%
AI Usage21.0%

Skills & Technologies

Programming Languages

DRFDjangoDjango/DRFDockerfileGraphQLGrapheneHTMLINIJSONJavaScript

Technical Skills

API ConfigurationAPI DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI RefactoringAPI TestingAPI developmentAPI testingAccess ControlAdmin InterfaceAdmin Interface CustomizationAdmin Interface DevelopmentAsynchronous ProgrammingAsynchronous Task Processing

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

unicef/hope

Oct 2024 May 2026
19 Months active

Languages Used

PythonSQLTOMLJavaScriptgraphqlpythontsxtypescript

Technical Skills

API DevelopmentBackend DevelopmentDRFDatabase FilteringDatabase Query OptimizationDjango