PolicyEngine/policyengine-us
Aug 2025 – Feb 2026
7 Months active
Languages Used
BashMakefileMarkdownPythonShellYAMLpythonyaml
Technical Skills
Backend DevelopmentBatch ProcessingBenefit CalculationBuild AutomationCI/CDChildcare Subsidies
Ziming
PROFILE
Ziming
Ziming worked extensively on the PolicyEngine/policyengine-us repository, delivering multi-state government benefits logic with a focus on TANF program implementation, eligibility calculations, and policy parameterization. Using Python, YAML, and GitHub Actions, Ziming modernized backend workflows, standardized policy modeling, and expanded automated test coverage to ensure regulatory compliance and maintainability. Their approach emphasized parameter-driven logic, robust CI/CD pipelines, and comprehensive documentation, enabling rapid onboarding of new state programs and accurate benefit calculations. Ziming’s work included deep refactoring, code quality improvements, and integration of complex eligibility rules, resulting in a scalable, testable system that supports evolving policy requirements across jurisdictions.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
670Total
Bugs
91
Commits
670
Features
183
Lines of code
321,741
Activity Months7
Your Network
30 peopleSame Organization
@policyengine.org5
Work History
February 2026
7 Commits • 2 Features
Feb 1, 2026February 2026: Monthly summary for PolicyEngine/policyengine-us highlighting key feature deliveries, major bug fixes, and business impact. Focus on multi-state eligibility updates, refactor work, and documentation improvements. Highlights include updated eligibility calculations, parameter normalization, expanded tests, YAML/reference improvements, and enhanced maintainability.
7 Commits • 2 Features
Feb 1, 2026February 2026: Monthly summary for PolicyEngine/policyengine-us highlighting key feature deliveries, major bug fixes, and business impact. Focus on multi-state eligibility updates, refactor work, and documentation improvements. Highlights include updated eligibility calculations, parameter normalization, expanded tests, YAML/reference improvements, and enhanced maintainability.
February 2026
January 2026
210 Commits • 62 Features
Jan 1, 2026January 2026 (PolicyEngine US): Delivered multi-state TANF enhancements with emphasis on Alaska ATA and Vermont Reach Up, expanded coverage to Wyoming POWER, and progressed North Dakota TANF finalization. Also advanced Florida TCA, Louisiana FITAP, and additional state workstreams. Improved testing, CI/CD, and documentation to increase integration reliability and maintainability. Key features delivered: - Alaska TANF (ATA) / ATAP implementation: full TANF logic (income eligibility tests, deductions, need standards, benefit calculation, resource eligibility) with YAML-based tests; co-authored contributions; robust unit/integration coverage. - Vermont TANF (Reach Up) program: income eligibility, earned income disregards, housing allowance by county, and ratable benefit reduction; strong test suite. - Wyoming TANF (POWER) program: income eligibility with flat disregards, benefit standards by household size, resource limit, and integration with federal TANF baseline. - North Dakota TANF: finalization per review feedback; code cleanup (naming alignment, removal of unused params), updated resources, and 87 tests passing. - Broadened scope: Florida TANF (TCA), Louisiana FITAP, South Carolina TANF, and Illinois IHWAP enhancements; documented policy references and expanded test coverage. Major bugs fixed: - Test suite stabilization and broader test coverage; fixes for failing tests; CI workflow improvements (uv.lock, labels, main branch updates); date handling corrections and backdating adjustments across states; removal of lifetime time limit parameter due to architecture. - PR/CI workflow fixes and miscellaneous cleanup; test scaffolding and reliability improvements. Overall impact and accomplishments: - Significantly expanded and stabilized TANF parameterization across multiple states, enabling faster onboarding of state programs and more accurate benefit calculations. Strengthened release readiness with CI/CD enhancements and comprehensive test coverage, reducing risk in production deployments. Technologies/skills demonstrated: - YAML-driven tests and policy parameter modeling; policy engine refactor and naming consistency; extensive unit/integration test design; CI/CD workflow optimization; documentation drafting and policy references; cross-state compliance and validation.
January 2026
210 Commits • 62 Features
Jan 1, 2026January 2026 (PolicyEngine US): Delivered multi-state TANF enhancements with emphasis on Alaska ATA and Vermont Reach Up, expanded coverage to Wyoming POWER, and progressed North Dakota TANF finalization. Also advanced Florida TCA, Louisiana FITAP, and additional state workstreams. Improved testing, CI/CD, and documentation to increase integration reliability and maintainability. Key features delivered: - Alaska TANF (ATA) / ATAP implementation: full TANF logic (income eligibility tests, deductions, need standards, benefit calculation, resource eligibility) with YAML-based tests; co-authored contributions; robust unit/integration coverage. - Vermont TANF (Reach Up) program: income eligibility, earned income disregards, housing allowance by county, and ratable benefit reduction; strong test suite. - Wyoming TANF (POWER) program: income eligibility with flat disregards, benefit standards by household size, resource limit, and integration with federal TANF baseline. - North Dakota TANF: finalization per review feedback; code cleanup (naming alignment, removal of unused params), updated resources, and 87 tests passing. - Broadened scope: Florida TANF (TCA), Louisiana FITAP, South Carolina TANF, and Illinois IHWAP enhancements; documented policy references and expanded test coverage. Major bugs fixed: - Test suite stabilization and broader test coverage; fixes for failing tests; CI workflow improvements (uv.lock, labels, main branch updates); date handling corrections and backdating adjustments across states; removal of lifetime time limit parameter due to architecture. - PR/CI workflow fixes and miscellaneous cleanup; test scaffolding and reliability improvements. Overall impact and accomplishments: - Significantly expanded and stabilized TANF parameterization across multiple states, enabling faster onboarding of state programs and more accurate benefit calculations. Strengthened release readiness with CI/CD enhancements and comprehensive test coverage, reducing risk in production deployments. Technologies/skills demonstrated: - YAML-driven tests and policy parameter modeling; policy engine refactor and naming consistency; extensive unit/integration test design; CI/CD workflow optimization; documentation drafting and policy references; cross-state compliance and validation.
December 2025
230 Commits • 59 Features
Dec 1, 2025December 2025 (2025-12) monthly summary for PolicyEngine/policyengine-us focusing on cross-state TANF implementations, code quality, testing, and CI enhancements. The team delivered multi-state TANF scaffolding and finalization, improved test coverage, and strengthened CI processes, driving regulatory compliance and faster policy iteration.
230 Commits • 59 Features
Dec 1, 2025December 2025 (2025-12) monthly summary for PolicyEngine/policyengine-us focusing on cross-state TANF implementations, code quality, testing, and CI enhancements. The team delivered multi-state TANF scaffolding and finalization, improved test coverage, and strengthened CI processes, driving regulatory compliance and faster policy iteration.
December 2025
November 2025
122 Commits • 37 Features
Nov 1, 2025November 2025 monthly summary for PolicyEngine-US focusing on cross-state TANF implementations, parameterization, and test quality. Highlights include PA, OH, GA, WA, TN, MI (FIP rename), WI, MO, IN, MN developments, with standardized patterns, zero-hard-coded values, and expanded test coverage driving policy compliance and maintainability.
November 2025
122 Commits • 37 Features
Nov 1, 2025November 2025 monthly summary for PolicyEngine-US focusing on cross-state TANF implementations, parameterization, and test quality. Highlights include PA, OH, GA, WA, TN, MI (FIP rename), WI, MO, IN, MN developments, with standardized patterns, zero-hard-coded values, and expanded test coverage driving policy compliance and maintainability.
October 2025
15 Commits • 3 Features
Oct 1, 2025Month 2025-10 highlights substantial policy modernization and program updates in PolicyEngine/policyengine-us. Delivered major feature work across TANF policy calculation modernization with immigration integration, CCS regional payment enhancements, and Harris County RIDES 2025 updates, complemented by codebase cleanup. The work emphasizes standardization, parameter-driven logic, and alignment with 2025 policy parameters, delivering safer, more maintainable and scalable policy calculations with improved test coverage and documentation.
15 Commits • 3 Features
Oct 1, 2025Month 2025-10 highlights substantial policy modernization and program updates in PolicyEngine/policyengine-us. Delivered major feature work across TANF policy calculation modernization with immigration integration, CCS regional payment enhancements, and Harris County RIDES 2025 updates, complemented by codebase cleanup. The work emphasizes standardization, parameter-driven logic, and alignment with 2025 policy parameters, delivering safer, more maintainable and scalable policy calculations with improved test coverage and documentation.
October 2025
September 2025
30 Commits • 7 Features
Sep 1, 2025September 2025 monthly work summary for PolicyEngine/policyengine-us focusing on delivering business value through key features, reliability improvements, and maintainable code. Highlights include refined payment processing, enhanced eligibility calculations, and critical asset recovery, alongside targeted refactors and reliability fixes that reduce risk and improve future velocity.
September 2025
30 Commits • 7 Features
Sep 1, 2025September 2025 monthly work summary for PolicyEngine/policyengine-us focusing on delivering business value through key features, reliability improvements, and maintainable code. Highlights include refined payment processing, enhanced eligibility calculations, and critical asset recovery, alongside targeted refactors and reliability fixes that reduce risk and improve future velocity.
August 2025
56 Commits • 13 Features
Aug 1, 2025August 2025 — PolicyEngine/policyengine-us: A focused month centered on stability, improved testing reliability, and business-impacting feature delivery. Investments in memory-optimized test infrastructure, enhanced baseline/workflow orchestration, and CI visibility enabled faster feedback and stronger production reliability. Notable feature work includes tests for age category and TAFDC eligibility and the California Riverside County General Relief Program, alongside critical LIHEAP bug fixes and code quality improvements.
56 Commits • 13 Features
Aug 1, 2025August 2025 — PolicyEngine/policyengine-us: A focused month centered on stability, improved testing reliability, and business-impacting feature delivery. Investments in memory-optimized test infrastructure, enhanced baseline/workflow orchestration, and CI visibility enabled faster feedback and stronger production reliability. Notable feature work includes tests for age category and TAFDC eligibility and the California Riverside County General Relief Program, alongside critical LIHEAP bug fixes and code quality improvements.
August 2025
Activity
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Quality Metrics
Correctness90.8%
Maintainability85.0%
Architecture86.2%
Performance84.0%
AI Usage39.0%
Skills & Technologies
Programming Languages
BashJavaScriptMakefileMarkdownN/ANonePythonShellUnknownYAML
Technical Skills
AI Agent DevelopmentAI IntegrationAI integrationAI-assisted developmentAPI developmentAPI integrationAutomationBackend DevelopmentBatch ProcessingBenefit CalculationBuild AutomationCI/CDChildcare SubsidiesCode CleanupCode Formatting
Repositories Contributed To
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