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David Salvisberg

PROFILE

David Salvisberg

Over 17 months, contributed to OneGov/onegov-cloud by delivering robust features and reliability improvements across reservations, payments, ticketing, and search. Developed API endpoints, integrated payment gateways like Stripe and Saferpay, and enhanced access control and notification systems. Applied Python, SQLAlchemy, and JavaScript to modernize backend workflows, optimize database queries, and improve UI/UX for booking and invoicing. Strengthened security through CSP hardening and static analysis, expanded static typing with mypy, and upgraded core dependencies for long-term maintainability. Work included search system overhauls, calendar and reporting enhancements, and continuous CI/CD improvements, resulting in a stable, scalable platform supporting complex business workflows.

Overall Statistics

Feature vs Bugs

60%Features

Repository Contributions

346Total
Bugs
94
Commits
346
Features
140
Lines of code
299,967
Activity Months17

Work History

March 2026

21 Commits • 6 Features

Mar 1, 2026

March 2026 highlights for OneGov/onegov-cloud: Core software upgraded to Python 3.12 and 3.14, enabling modern features and longer-term maintenance. Org reliability improvements include fixes for potential float underflow in search queries, hardened file handling across Org components, and refinements to mail/field handling, along with safer file picker and photo album behavior. The Org events API was extended with additional filters and, to improve query precision, the event source filtering was switched to a prefix-based approach. Release readiness was advanced with preparations for 2026.15 and 2026.16, including documentation alignment and release process stability. Development tooling and pipelines were strengthened through switching from pre-commit to prek with an ensure_user callback, plus CI/CD and docs workflow fixes and cleanup of obsolete mypy stubs. Security and stability improvements were applied across Landsgemeinde drafts visibility, Kaba configuration KeyError safeguards, and ticket filter crash fixes, contributing to safer data handling and improved operator experience. Overall, these efforts increase reliability, data safety, and developer velocity, enabling faster and safer feature delivery.

February 2026

6 Commits • 3 Features

Feb 1, 2026

February 2026 (OneGov/onegov-cloud) focused on improving user-facing booking UX, strengthening reliability of critical workflows, and laying groundwork for modernization. Key outcomes include clearer booking experiences, more robust email and blocker handling, and readiness for secure payments and SQLAlchemy 2.0 upgrades. These changes reduce friction for end users, minimize operational errors, and position the product for secure integrations and future migrations.

January 2026

18 Commits • 10 Features

Jan 1, 2026

January 2026 monthly update for OneGov/onegov-cloud delivering stability, security, and data-quality improvements across core platform and public-facing features. The team prioritized reliability during large data exports, accessibility and rendering stability, enhanced telemetry options, and governance-friendly API and calendar capabilities, driving business value through safer operations and data-driven decision making.

December 2025

16 Commits • 6 Features

Dec 1, 2025

December 2025 monthly summary for OneGov/onegov-cloud. Focused on security hardening, pricing flexibility, UI/UX improvements for reservations and payments, ticketing/notifications, and search/indexing enhancements. Key outcomes include CSP-hardening, removal of inline JavaScript, configurable reservation pricing and discounts, richer occupancy and payment/invoice UX, smarter ticket group filtering and mute/unmute capabilities, and improved search result ranking and highlighting. Notable bug-related fix: Translator Directory bug caused by unnecessary code duplication was fixed to reduce duplication and improve permissions.

November 2025

3 Commits • 2 Features

Nov 1, 2025

November 2025 monthly summary: Delivered user-centric calendar reliability improvements, expanded ticket export capabilities, and strengthened historical data integrity for invoicing. These changes enhance business value by improving calendar accuracy for busy periods, enabling more flexible ticket documentation, and preserving accurate financial history.

October 2025

51 Commits • 26 Features

Oct 1, 2025

October 2025 focused on delivering business-value features, stabilizing the build pipeline, and hardening security and reliability across the OneGov cloud platform. Highlights include a major search system overhaul removing legacy ElasticSearch, Stripe payment upgrade, and extensive type hints across test suites to boost static checks. In addition, invoicing, PDF export, and iCal/reporting enhancements broaden reporting capabilities and user workflows, while security and release processes were tightened for safer, more predictable deployments.

September 2025

27 Commits • 13 Features

Sep 1, 2025

September 2025 focused on delivering business value through user-facing improvements in invoicing, reservations, and access control while strengthening developer tooling and platform stability. Key features delivered included: Org: Improve robustness of Kaba key revocation (acdb4252efccdbaab6351f2818a527a2fea5cffb), Typing: Add type hints for test modules across major test suites (37aaa51cdc99f0a24faedbc6bcc817e4e7e90c40; 26eb7f88d122f102095a98641fcca96fd9fffce1; 945523c3f1e2b8bc2cdf0572f493d66994655103; d9ea7c6f327b8975d27b4ec100987cda032b3600), Org: Invoices and payments enhancements (99d6e11c44543f89baa11ca36850c6b4d1104ed3; b801dfbd849adc26d142e3bb087e4066e68dd47a), Org: Drop time from payment/invoice filter forms (b5dac86e2459088abefcab9552a7a84ccedb705a), Org: Include extra fields in iCal event description (5231bc06ae2e72a84e1f5955984cf6dee2aebf8c). Major bugs fixed included: Core: Run morepath.autoscan when creating a new schema (91030ec3725b6d4292b17b6eea75771374829afc), Core: Fix Elasticsearch availability in CLI commands (2b4c28235da9c3ec60a69df5f652108bda08ad77), Org: Make citizen login e-mail case-insensitive (d08bc704ad50736f9948537eb867a696ef8ada50), Org: Display reservation errors (352eb36dd78d7402c9370de1d8cb240eca4ad591), Org: Crash fixes related to reservations and fullcalendar parsing (9548576332d26e560807b37d65585898676e4103; 21487f788eaa392ad83263cbdaba8a6eb23857bf); and Search: Improvements to Postgres search results loading (613f9d83dbafe81d09a310807fe837bd0b20a720). Technologies and skills demonstrated include increased static typing across test suites (mypy), extended iCal capabilities, scheduling automation, and resilience fixes that reduce incident risk and improve system reliability.

August 2025

39 Commits • 10 Features

Aug 1, 2025

August 2025 (OneGov/onegov-cloud) monthly summary focused on delivering customer-facing ticketing and payment improvements, reliability hardening, and quality work to support the upcoming release. Key features delivered include URL-based ticket viewing with a submitter filter and the ability to edit the submitter email, payment flow enhancements with pre-payment invoice visibility and provider-specific references in exports, and a new reservation creation view linked to existing tickets. Additional progress includes display of invoice items in ticket PDFs and improved interoperability via iCal URL inclusion. Static typing was expanded across tests and server modules to reduce regressions, and CI/reliability improvements were implemented to support smoother deployments and release readiness for 2025.44.

July 2025

30 Commits • 10 Features

Jul 1, 2025

July 2025 — OneGov/onegov-cloud: delivered stability, UX improvements, and release-readiness across reservations, payments, and communications. Focused on business-value outcomes: more reliable booking and checkout, clearer user self-service, and faster release cycles.

June 2025

25 Commits • 14 Features

Jun 1, 2025

June 2025 — OneGov Cloud delivered impactful UI enhancements, reliability improvements, and release readiness. Key features include a calendar-driven reservation view, automated communication capabilities, and enhanced security/permissions. Release tags for 2025.25–2025.27 signal a robust deployment plan, while targeted fixes improve data integrity, user experience, and payment/ticket reliability.

May 2025

13 Commits • 6 Features

May 1, 2025

May 2025 monthly recap focusing on typing safety, data performance, pricing flexibility, and developer tooling across two repositories (python/typeshed and OneGov/onegov-cloud). Major work delivered includes typing fixes to improve static analysis, reservation management enhancements with access control, pricing and discounts features, and data model/indexing optimizations. Performance improvements were achieved in search indexing via language detection changes, along with modernization of code quality tooling and dependency management. Overall, the month delivered stronger product reliability, faster data queries, and clearer business rules in pricing and access control, supporting better user experiences and maintainability.

April 2025

20 Commits • 7 Features

Apr 1, 2025

April 2025 highlights across OneGov/onegov-cloud and astral-sh/ruff focused on delivering high-value features, improving security and data organization, and strengthening code quality and reliability. Key deliveries include a date picker for reservation navigation, dormakaba API integration for secure resource access, resource subgroups for better data organization, and series reservations for easier multi-day scheduling. We also improved user engagement and operational efficiency with immediate ticket notifications and tagging, and added copy/paste support for availability periods. Code quality improvements were accelerated through Ruff linting (with automated fixes and migration of prints to proper logging), complemented by regression tests around typing.Annotated handling to prevent future regressions. In parallel, a set of critical bug fixes stabilized the platform and reduced operational risk, including preventing crashes in user initials computation and payment button generation, safeguarding upgrade tasks, eliminating crashes when event filters are misconfigured, ensuring anonymous public content remains accessible, and hardening hourly maintenance routines.

March 2025

18 Commits • 6 Features

Mar 1, 2025

March 2025 monthly performance summary: Delivered user-centric features for OneGov Cloud, improved reliability and performance, and advanced linting discipline across Ruff. Highlights include enhanced access control, richer file navigation, MTAN UX improvements, News content handling, and CI/CD/test stability enhancements.

February 2025

11 Commits • 6 Features

Feb 1, 2025

February 2025 focused on delivering API capabilities, payment integration, UX improvements, and performance optimizations across OneGov Cloud and supporting tooling. Highlights include new API-driven Topic data exposure, unified topic-based contact inheritance, a new payment provider integration, UX enhancements for reservations, and broad performance and tooling improvements that increase flexibility, reliability, and developer velocity.

January 2025

18 Commits • 5 Features

Jan 1, 2025

January 2025 highlights: delivering user-focused features across OneGov/onegov-cloud, expanding data quality, and broadening payment options, while tightening security and development tooling. The month combined feature work, reliability improvements, and release engineering to position the project well for 2025 initiatives.

December 2024

20 Commits • 7 Features

Dec 1, 2024

December 2024 monthly highlights focused on security, reliability, and scalable authentication and notification capabilities, delivering business value across identity, API access, data quality, and release operations. Key outcomes include enterprise-ready authentication with a configurable OpenID Connect provider, strengthened API security and visibility controls, improved notification routing to parent organizations with direct sub-result URLs in SMS, and richer subscriber history modeling, complemented by reliability fixes in file uploads and image processing. Operational tooling and parsing improvements also progressed to support safer releases and production readiness.

November 2024

10 Commits • 3 Features

Nov 1, 2024

November 2024-11 monthly summary: Delivered cross-repo enhancements and hardening of static analysis, improved CI reliability, and reduced test durations. Key outcomes across OneGov/onegov-cloud and ndmitchell/ruff include: 1) CI/test performance improvements via parallel test execution and updated dependencies; 2) Linting stability by excluding the broken Ruff 0.7.2 rule (UP044); 3) Enhanced translator_directory CLI tests with clearer failures and reduced flaky fixtures; 4) New Flake8-type-checking TC007 and TC008 rules with supporting tests; 5) Bug fixes in quote_type_expression and runtime imports optimization to reduce false positives and runtime overhead. These changes increase developer productivity, shorten feedback loops, and improve overall code quality using Python, pytest-xdist/pytest-split, Ruff, and AST-based analysis.

Activity

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Quality Metrics

Correctness90.0%
Maintainability88.6%
Architecture84.4%
Performance81.0%
AI Usage21.2%

Skills & Technologies

Programming Languages

BashCSSChamaChameChameleoChameleonChameleonsChangelogChaskellChiacode

Technical Skills

AJAXAPI DesignAPI DevelopmentAPI IntegrationAPI designAPI developmentAST ParsingAST TraversalAccess ControlAccess Control SystemsAsync ProgrammingAuthenticationAutomationBack-end DevelopmentBackend Development

Repositories Contributed To

4 repos

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

OneGov/onegov-cloud

Nov 2024 Mar 2026
17 Months active

Languages Used

PythonYAMLcfgDockerfileINIJavaScriptMarkdownPO

Technical Skills

Backend DevelopmentCI/CDCLI TestingConfiguration ManagementDevOpsGit Configuration

ndmitchell/ruff

Nov 2024 Mar 2025
5 Months active

Languages Used

PythonRust

Technical Skills

Code LintingLintingPython ASTPython TypingRustStatic Analysis

astral-sh/ruff

Apr 2025 Apr 2025
1 Month active

Languages Used

PythonRust

Technical Skills

AST ParsingAST TraversalPythonPython Type HintingRustStatic Analysis

python/typeshed

May 2025 May 2025
1 Month active

Languages Used

Python

Technical Skills

PythonStub DevelopmentType Hinting