mullvad/mullvadvpn-app
Oct 2024 – Oct 2025
12 Months active
Languages Used
SwiftSVGCN/AObjective-CRustMarkdownShell
Technical Skills
API IntegrationNetwork ConfigurationNetworkingObfuscationUI DevelopmentVPN
Jon Petersson
PROFILE
Jon Petersson
Jon Petersson contributed to the mullvad/mullvadvpn-app by delivering end-to-end features that enhanced VPN reliability, security, and user experience. He implemented obfuscated connection protocols such as QUIC and Shadowsocks, modernized the UI with Swift and SwiftUI, and integrated Rust-based networking components via FFI. Jon refactored network path monitoring, improved onboarding and payment flows, and strengthened release management with robust CI/CD and version control practices. His work addressed complex concurrency, protocol design, and accessibility challenges, resulting in a maintainable, testable codebase. Through thoughtful architecture and cross-language integration, Jon ensured the app’s stability, scalability, and adaptability to evolving requirements.
Overall Statistics
Feature vs Bugs
63%Features
Repository Contributions
82Total
Bugs
19
Commits
82
Features
33
Lines of code
19,207
Activity Months12
Your Network
48 people
Work History
October 2025
16 Commits • 5 Features
Oct 1, 20252025-10 highlights: Delivered security-led features, UX improvements, and architectural refactors across mullvadvpn-app, driving reliability, performance, and release readiness. Key features and stability work reduce user friction and CI flakiness, enabling faster onboarding and more robust deployments.
16 Commits • 5 Features
Oct 1, 20252025-10 highlights: Delivered security-led features, UX improvements, and architectural refactors across mullvadvpn-app, driving reliability, performance, and release readiness. Key features and stability work reduce user friction and CI flakiness, enabling faster onboarding and more robust deployments.
October 2025
September 2025
8 Commits • 2 Features
Sep 1, 2025September 2025 performance summary for mullvad/mullvadvpn-app: Strengthened connection reliability and user experience by delivering Obfuscated Connection Support with enhanced relay selection, UI polish, and critical fixes to access methods startup, multihop exit routing, and localization workflow. These changes improve connection reliability, broaden viable routing options, and improve testability and logging for future iterations.
September 2025
8 Commits • 2 Features
Sep 1, 2025September 2025 performance summary for mullvad/mullvadvpn-app: Strengthened connection reliability and user experience by delivering Obfuscated Connection Support with enhanced relay selection, UI polish, and critical fixes to access methods startup, multihop exit routing, and localization workflow. These changes improve connection reliability, broaden viable routing options, and improve testability and logging for future iterations.
August 2025
6 Commits • 2 Features
Aug 1, 2025August 2025 performance summary: Delivered security-conscious QUIC obfuscation with release-safe handling, UI polish for changelog, and stability improvements across end-to-end testing and CI/CD. These changes reduce release risk, improve user experience, and boost engineering velocity through robust automation, clearer UI, and reliable builds.
6 Commits • 2 Features
Aug 1, 2025August 2025 performance summary: Delivered security-conscious QUIC obfuscation with release-safe handling, UI polish for changelog, and stability improvements across end-to-end testing and CI/CD. These changes reduce release risk, improve user experience, and boost engineering velocity through robust automation, clearer UI, and reliable builds.
August 2025
June 2025
7 Commits • 4 Features
Jun 1, 2025June 2025 monthly summary for mullvad/mullvadvpn-app: Delivered significant improvements in network reliability, obfuscation, and UX, along with release-note hygiene that supports clearer customer communication. The work focused on robust QUIC-based WireGuard obfuscation, expanded network path detection, offline UX enhancements, and comprehensive changelog/version updates, driving tangible business value and platform stability.
June 2025
7 Commits • 4 Features
Jun 1, 2025June 2025 monthly summary for mullvad/mullvadvpn-app: Delivered significant improvements in network reliability, obfuscation, and UX, along with release-note hygiene that supports clearer customer communication. The work focused on robust QUIC-based WireGuard obfuscation, expanded network path detection, offline UX enhancements, and comprehensive changelog/version updates, driving tangible business value and platform stability.
May 2025
4 Commits • 2 Features
May 1, 2025Concise monthly summary for 2025-05 focusing on delivered features, stability improvements, and impact for mullvadvpn-app. Highlights include unified payment API migration for legacy StoreKit payments, UX enhancement for relay selection with a unified DAITA/Multihop experience and a UI indicator, and internal stability improvements to logging and OSV handling in trusted build environments. These work items reduce fragmentation, improve user experience, and enhance reliability across payment flows and routing features.
4 Commits • 2 Features
May 1, 2025Concise monthly summary for 2025-05 focusing on delivered features, stability improvements, and impact for mullvadvpn-app. Highlights include unified payment API migration for legacy StoreKit payments, UX enhancement for relay selection with a unified DAITA/Multihop experience and a UI indicator, and internal stability improvements to logging and OSV handling in trusted build environments. These work items reduce fragmentation, improve user experience, and enhance reliability across payment flows and routing features.
May 2025
April 2025
5 Commits • 5 Features
Apr 1, 2025April 2025 Monthly Summary for mullvad/mullvadvpn-app: - Delivered end-to-end user-facing features that enhance automation, privacy, and onboarding, while improving reliability and developer velocity. - Implemented Mullvad API Account Proxy Management with a Rust backend integration, enabling create/retrieve/delete of user proxies and adding new account proxy handling files. - Introduced StoreKit 2 Refunds UI, including a refund initiation button, user confirmation, and status updates, with updated payment state management to support refunds. - Added Obfuscation Status Indicator (filter pill) in the Location View, along with accessibility and UI adjustments to clearly reflect active obfuscation. - Implemented Onboarding Hint for Custom Lists Creation (footer label in empty state) to improve onboarding and usability. - Enhanced Problem Report flow with cancellation capability, refactored logging to support cancellation, improved UI during submission, clearer failure messages, and a new View app logs button. Overall impact: These changes deliver measurable business value by automating account proxy management, reducing support friction for refunds, clarifying privacy-enabled states, accelerating feature adoption, and strengthening reliability and observability. Key technologies/skills demonstrated: Rust backend integration, Mullvad API usage, StoreKit 2 integration, UI/UX enhancements, accessibility considerations, logging/refactoring, and robust error handling.
April 2025
5 Commits • 5 Features
Apr 1, 2025April 2025 Monthly Summary for mullvad/mullvadvpn-app: - Delivered end-to-end user-facing features that enhance automation, privacy, and onboarding, while improving reliability and developer velocity. - Implemented Mullvad API Account Proxy Management with a Rust backend integration, enabling create/retrieve/delete of user proxies and adding new account proxy handling files. - Introduced StoreKit 2 Refunds UI, including a refund initiation button, user confirmation, and status updates, with updated payment state management to support refunds. - Added Obfuscation Status Indicator (filter pill) in the Location View, along with accessibility and UI adjustments to clearly reflect active obfuscation. - Implemented Onboarding Hint for Custom Lists Creation (footer label in empty state) to improve onboarding and usability. - Enhanced Problem Report flow with cancellation capability, refactored logging to support cancellation, improved UI during submission, clearer failure messages, and a new View app logs button. Overall impact: These changes deliver measurable business value by automating account proxy management, reducing support friction for refunds, clarifying privacy-enabled states, accelerating feature adoption, and strengthening reliability and observability. Key technologies/skills demonstrated: Rust backend integration, Mullvad API usage, StoreKit 2 integration, UI/UX enhancements, accessibility considerations, logging/refactoring, and robust error handling.
March 2025
9 Commits • 5 Features
Mar 1, 2025March 2025 Summary for mullvadvpn-app: Delivered key user-facing features, cross-language integrations, and release-process improvements that collectively drive onboarding efficiency, data freshness, and platform scalability. Highlights include a new copy-to-clipboard flow for the account number on the welcome screen, robust Mullvad relay data API integration with Swift UI and Rust backend, and relocation of release notes/versioning to streamline iOS builds. Foundational UX and architecture work completed to support future transport enhancements and performance optimizations.
9 Commits • 5 Features
Mar 1, 2025March 2025 Summary for mullvadvpn-app: Delivered key user-facing features, cross-language integrations, and release-process improvements that collectively drive onboarding efficiency, data freshness, and platform scalability. Highlights include a new copy-to-clipboard flow for the account number on the welcome screen, robust Mullvad relay data API integration with Swift UI and Rust backend, and relocation of release notes/versioning to streamline iOS builds. Foundational UX and architecture work completed to support future transport enhancements and performance optimizations.
March 2025
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 summary for mullvadvpn-app focused on enhancing API communication architecture and onboarding reliability. Delivered a new IPC-driven boundary that allows direct API requests from the app to the packet tunnel, bypassing VPN routing to improve flexibility and potential performance. Fixed onboarding flow to ensure users can progress beyond the welcome screen, reducing friction for first-time users. Established groundwork for decoupled, cross-process API routing that supports future optimizations and maintainability.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 summary for mullvadvpn-app focused on enhancing API communication architecture and onboarding reliability. Delivered a new IPC-driven boundary that allows direct API requests from the app to the packet tunnel, bypassing VPN routing to improve flexibility and potential performance. Fixed onboarding flow to ensure users can progress beyond the welcome screen, reducing friction for first-time users. Established groundwork for decoupled, cross-process API routing that supports future optimizations and maintainability.
January 2025
8 Commits • 3 Features
Jan 1, 2025January 2025 monthly summary for mullvad/mullvadvpn-app: Key features delivered span UI, networking, and settings navigation; the team produced a SwiftUI-driven ConnectionView overhaul with iOS 15 compatibility, integrated Rust-based networking components for enhanced transport selection and API context management, and introduced a dedicated DAITA settings route and coordinator to simplify configuration flows. Major bugs fixed and quality improvements include UI test stabilization (reducing flakiness in WireGuard over TCP and connection retry logic) and updates to test infrastructure/assets to reflect current devices. Overall impact includes a more polished user experience, greater network configuration flexibility, and more reliable release-ready builds. Technologies/skills demonstrated include SwiftUI, iOS11-15 compatibility considerations, Rust FFI integration, API context enhancements, advanced navigation architecture, and test infrastructure modernization.
8 Commits • 3 Features
Jan 1, 2025January 2025 monthly summary for mullvad/mullvadvpn-app: Key features delivered span UI, networking, and settings navigation; the team produced a SwiftUI-driven ConnectionView overhaul with iOS 15 compatibility, integrated Rust-based networking components for enhanced transport selection and API context management, and introduced a dedicated DAITA settings route and coordinator to simplify configuration flows. Major bugs fixed and quality improvements include UI test stabilization (reducing flakiness in WireGuard over TCP and connection retry logic) and updates to test infrastructure/assets to reflect current devices. Overall impact includes a more polished user experience, greater network configuration flexibility, and more reliable release-ready builds. Technologies/skills demonstrated include SwiftUI, iOS11-15 compatibility considerations, Rust FFI integration, API context enhancements, advanced navigation architecture, and test infrastructure modernization.
January 2025
December 2024
7 Commits • 2 Features
Dec 1, 2024December 2024 — Mullvad Mullvadvpn-app: Delivered key UI and settings enhancements with a focus on robust user feedback during VPN connections, safer advanced configurations, and a scalable foundation for future UI improvements. Achievements include a UI refresh for the Connection View with a unified TunnelViewController foundation, new Multihop and DAITA settings pages with status indicators and data reload, and a critical bug fix for relay selection when DAITA and obfuscation are both enabled. The work emphasizes business value through clearer visibility of tunnel state, safer default behavior, and improved maintainability.
December 2024
7 Commits • 2 Features
Dec 1, 2024December 2024 — Mullvad Mullvadvpn-app: Delivered key UI and settings enhancements with a focus on robust user feedback during VPN connections, safer advanced configurations, and a scalable foundation for future UI improvements. Achievements include a UI refresh for the Connection View with a unified TunnelViewController foundation, new Multihop and DAITA settings pages with status indicators and data reload, and a critical bug fix for relay selection when DAITA and obfuscation are both enabled. The work emphasizes business value through clearer visibility of tunnel state, safer default behavior, and improved maintainability.
November 2024
7 Commits • 1 Features
Nov 1, 2024November 2024: Delivered targeted UI correctness, port configuration persistence, and enhanced multihop Shadowsocks support for mullvadvpn-app, alongside a robust settings data reload mechanism. These changes improve user configuration reliability, reduce misconfigurations, and strengthen UI/state stability across the app.
7 Commits • 1 Features
Nov 1, 2024November 2024: Delivered targeted UI correctness, port configuration persistence, and enhanced multihop Shadowsocks support for mullvadvpn-app, alongside a robust settings data reload mechanism. These changes improve user configuration reliability, reduce misconfigurations, and strengthen UI/state stability across the app.
November 2024
October 2024
3 Commits • 1 Features
Oct 1, 2024October 2024 monthly summary for mullvadvpn-app focused on Shadowsocks support, obfuscation improvements, and UI reliability enhancements. Delivered API data model updates and refactors to improve reliability, and fixed a UI bug to ensure accurate relay status presentation. These changes increase data fidelity, strengthen obfuscation behavior, and improve user experience for end-users and client integrations.
October 2024
3 Commits • 1 Features
Oct 1, 2024October 2024 monthly summary for mullvadvpn-app focused on Shadowsocks support, obfuscation improvements, and UI reliability enhancements. Delivered API data model updates and refactors to improve reliability, and fixed a UI bug to ensure accurate relay status presentation. These changes increase data fidelity, strengthen obfuscation behavior, and improve user experience for end-users and client integrations.
Activity
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Quality Metrics
Correctness87.8%
Maintainability87.0%
Architecture83.0%
Performance80.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
CMarkdownN/AObjective-CRustSVGShellSwiftSwiftUITOML
Technical Skills
API IntegrationAccessibilityActor ModelAsynchronous ProgrammingBuild ScriptingC/Objective-C InteroperabilityCI/CDCachingCode RefactoringConcurrencyConfiguration ManagementCoordinator PatternDependency ManagementDocumentationError Handling
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