
Caroline Modic engineered robust election technology features in the votingworks/vxsuite repository, focusing on secure QR-based reporting, multi-precinct pollbook workflows, and data integrity for voter management. She designed and implemented backend APIs and frontend React components using TypeScript and Node.js, enabling precinct-aware exports, ballot rotation, and real-time reporting with QR code generation and signature verification. Caroline’s work included database migrations, test automation, and networked system safeguards to prevent misconfiguration and ensure compliance. By integrating caching, error handling, and observability, she delivered reliable, scalable solutions that improved operational efficiency, auditability, and user experience across complex, distributed election environments.

October 2025 for votingworks/vxsuite focused on delivering a robust QR-based reporting overhaul, introducing precinct-aware QR exports and polls-status reporting, plus Ballot Rotation and live data persistence. Notable work includes UI refinements, test coverage, and safeguards to prevent incompatible configurations. These changes improve reporting accuracy, auditability, and operational efficiency for election staff, while expanding deployment-ready capabilities for real-time decision-making and removing the Quick Results QR code where applicable.
October 2025 for votingworks/vxsuite focused on delivering a robust QR-based reporting overhaul, introducing precinct-aware QR exports and polls-status reporting, plus Ballot Rotation and live data persistence. Notable work includes UI refinements, test coverage, and safeguards to prevent incompatible configurations. These changes improve reporting accuracy, auditability, and operational efficiency for election staff, while expanding deployment-ready capabilities for real-time decision-making and removing the Quick Results QR code where applicable.
September 2025 monthly summary for votingworks/vxsuite focusing on delivering end-to-end VxQr reporting and ballot hash export capabilities, with a strong emphasis on security, data integrity, and business value. Key technologies include backend API design, QR code generation, certificate/signature verification, migrations, and UI integration for Quick Results Reporting.
September 2025 monthly summary for votingworks/vxsuite focusing on delivering end-to-end VxQr reporting and ballot hash export capabilities, with a strong emphasis on security, data integrity, and business value. Key technologies include backend API design, QR code generation, certificate/signature verification, migrations, and UI integration for Quick Results Reporting.
August 2025 (2025-08) focused on stabilizing testing, improving user experience, and hardening networking in Vxsuite. Delivered concrete business value through faster, more reliable tests, clearer UX for polling/status, and a more resilient VxPollBook with better offline/online handling and error suppression in edge cases.
August 2025 (2025-08) focused on stabilizing testing, improving user experience, and hardening networking in Vxsuite. Delivered concrete business value through faster, more reliable tests, clearer UX for polling/status, and a more resilient VxPollBook with better offline/online handling and error suppression in edge cases.
Month: 2025-07 — VotingWorks/vxsuite delivered precinct-aware improvements that improve data integrity, user experience, test reliability, and operational observability, delivering clear business value for multi-precinct elections. Focused on delivering concrete features while tightening data correctness and release reliability across the system.
Month: 2025-07 — VotingWorks/vxsuite delivered precinct-aware improvements that improve data integrity, user experience, test reliability, and operational observability, delivering clear business value for multi-precinct elections. Focused on delivering concrete features while tightening data correctness and release reliability across the system.
June 2025 monthly work summary for votingworks/vxsuite: Delivered critical voter workflow enhancements, multi-precinct pollbook support with robust synchronization safeguards, and improved observability and test stability. Focused on business value: data integrity, compliance with election rules, reliable cross-precinct operations, and reduced risk of misconfig-driven events. Highlights include reprint receipt capability, inactive voter marking, and duplicate-name warnings; multi-precinct pollbooks with precinct enforcement and address restrictions; hardening against incompatible configurations to prevent cross-device event sharing; and enhancements to network status UI plus substantial test stability improvements to expand coverage and CI reliability.
June 2025 monthly work summary for votingworks/vxsuite: Delivered critical voter workflow enhancements, multi-precinct pollbook support with robust synchronization safeguards, and improved observability and test stability. Focused on business value: data integrity, compliance with election rules, reliable cross-precinct operations, and reduced risk of misconfig-driven events. Highlights include reprint receipt capability, inactive voter marking, and duplicate-name warnings; multi-precinct pollbooks with precinct enforcement and address restrictions; hardening against incompatible configurations to prevent cross-device event sharing; and enhancements to network status UI plus substantial test stability improvements to expand coverage and CI reliability.
May 2025 monthly performance summary for votingworks/vxsuite focused on security, scalability, and data integrity. Delivered centralized, networked pollbook configuration with new backend endpoints and frontend admin UI flows to configure from USB or networked machines; enhanced error reporting and a lockout policy after unconfiguration to mitigate security risks. Implemented gossip-based pollbook discovery to improve network event polling, reducing discovery time and improving synchronization. Enhanced voter data portability and auditability by refining the receipt numbering (sequential event IDs) and improving voter history export formats; added a cover page for the backup voter checklist. Stabilized test stability and improved UI visibility for connected pollbooks, reducing flaky failures. Hardened backend command execution by routing system commands through intermediate scripts with centralized sudo privilege management for better security and maintainability.
May 2025 monthly performance summary for votingworks/vxsuite focused on security, scalability, and data integrity. Delivered centralized, networked pollbook configuration with new backend endpoints and frontend admin UI flows to configure from USB or networked machines; enhanced error reporting and a lockout policy after unconfiguration to mitigate security risks. Implemented gossip-based pollbook discovery to improve network event polling, reducing discovery time and improving synchronization. Enhanced voter data portability and auditability by refining the receipt numbering (sequential event IDs) and improving voter history export formats; added a cover page for the backup voter checklist. Stabilized test stability and improved UI visibility for connected pollbooks, reducing flaky failures. Hardened backend command execution by routing system commands through intermediate scripts with centralized sudo privilege management for better security and maintainability.
April 2025 (2025-04) monthly summary for votingworks/vxsuite. Delivered a comprehensive Pollbook overhaul with backend refactor to separate Networking and internal APIs, foundational frontend work, and expanded test coverage; introduced new database structures, improved data handling, updated fixtures, and end-to-end tests, significantly stabilizing the test suite and reducing regression risk. Also shipped Paper Backup Checklist feature testing with reliability improvements and introduced Grout RPC performance instrumentation to surface bottlenecks and guide optimization. Together, these efforts improved platform reliability, shortened QA cycles, and provided data-driven insights for performance improvements across critical workflows (pollbook, backups, and RPC paths).
April 2025 (2025-04) monthly summary for votingworks/vxsuite. Delivered a comprehensive Pollbook overhaul with backend refactor to separate Networking and internal APIs, foundational frontend work, and expanded test coverage; introduced new database structures, improved data handling, updated fixtures, and end-to-end tests, significantly stabilizing the test suite and reducing regression risk. Also shipped Paper Backup Checklist feature testing with reliability improvements and introduced Grout RPC performance instrumentation to surface bottlenecks and guide optimization. Together, these efforts improved platform reliability, shortened QA cycles, and provided data-driven insights for performance improvements across critical workflows (pollbook, backups, and RPC paths).
Concise monthly summary for 2025-03 focused on delivering high-impact features, fixing critical issues, and strengthening the VxSuite platform. Highlights include secure, scannable reporting workflows, improved printing options aligned with hardware, monorepo consolidation for maintainability, and multi-language ballot processing reliability.
Concise monthly summary for 2025-03 focused on delivering high-impact features, fixing critical issues, and strengthening the VxSuite platform. Highlights include secure, scannable reporting workflows, improved printing options aligned with hardware, monorepo consolidation for maintainability, and multi-language ballot processing reliability.
December 2024 monthly summary focusing on delivering business value and technical excellence across two core repositories (votingworks/arlo and votingworks/vxsuite). The month centered on enhancing data linkage accuracy, reducing manual intervention, and streamlining build/test workflows through targeted refactors, tooling, and fixture improvements.
December 2024 monthly summary focusing on delivering business value and technical excellence across two core repositories (votingworks/arlo and votingworks/vxsuite). The month centered on enhancing data linkage accuracy, reducing manual intervention, and streamlining build/test workflows through targeted refactors, tooling, and fixture improvements.
November 2024 monthly summary for developers focusing on delivering business value, reliability, and user-facing improvements across arlo and vxsuite. Highlights include streamlined database migrations, extended data file support, strengthened file upload security, UI/UX enhancements for audits and admin views, and improved hardware integration reliability.
November 2024 monthly summary for developers focusing on delivering business value, reliability, and user-facing improvements across arlo and vxsuite. Highlights include streamlined database migrations, extended data file support, strengthened file upload security, UI/UX enhancements for audits and admin views, and improved hardware integration reliability.
Overview of all repositories you've contributed to across your timeline