mullvad/mullvadvpn-app
Oct 2024 – Apr 2026
18 Months active
Languages Used
SwiftSVGCN/AObjective-CRustMarkdownShell
Technical Skills
API IntegrationNetwork ConfigurationNetworkingObfuscationUI DevelopmentVPN
Jon Petersson
PROFILE
Jon Petersson
Over 18 months, contributed to the mullvad/mullvadvpn-app repository by delivering 55 features and resolving 24 bugs, focusing on VPN reliability, privacy, and user experience. Built and refined core networking and obfuscation features using Swift, Rust, and SwiftUI, including QUIC and Shadowsocks support, advanced relay selection, and payment processing integrations. Enhanced accessibility, automated testing, and CI/CD pipelines to ensure robust releases and maintainable code. Implemented privacy-preserving logging, streamlined onboarding, and improved localization and accessibility. The work emphasized modular architecture, cross-language interoperability, and security, resulting in a stable, user-focused iOS VPN application with strong test coverage and maintainability.
Overall Statistics
Feature vs Bugs
70%Features
Repository Contributions
120Total
Bugs
24
Commits
120
Features
55
Lines of code
31,689
Activity Months18
Your Network
64 peopleSame Organization
@mullvad.net20
Shared Repositories
44
AlbinMember
Andrej MihajlovMember
Andrew BulhakMember
Ap4shMember
Mullvad build serverMember
Cameron AaronMember
Braydon FullerMember
Daneo Van OverloopMember
David GöranssonMember
Work History
April 2026
3 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for mullvadvpn-app: Delivered privacy and reliability improvements, hardened vulnerability handling, and improved test fidelity. Focused on reducing exposure of sensitive data in logs, strengthening test reliability for multihop flows, and configuring OSV scanner to avoid false positives. These changes enhance user privacy, stability, and security posture while preserving core functionality and performance.
3 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for mullvadvpn-app: Delivered privacy and reliability improvements, hardened vulnerability handling, and improved test fidelity. Focused on reducing exposure of sensitive data in logs, strengthening test reliability for multihop flows, and configuring OSV scanner to avoid false positives. These changes enhance user privacy, stability, and security posture while preserving core functionality and performance.
April 2026
March 2026
10 Commits • 6 Features
Mar 1, 2026March 2026 highlights: Delivered user-focused localization and accessibility enhancements, introduced automatic VPN location selection with testing coverage, completed the Payments flow improvements with enhanced logging, refreshed multihop relay UI with proximity-based selection, and hardened security tooling while streamlining build configuration. These efforts improve user experience, reliability, security, and overall product quality, enabling faster releases and better observability.
March 2026
10 Commits • 6 Features
Mar 1, 2026March 2026 highlights: Delivered user-focused localization and accessibility enhancements, introduced automatic VPN location selection with testing coverage, completed the Payments flow improvements with enhanced logging, refreshed multihop relay UI with proximity-based selection, and hardened security tooling while streamlining build configuration. These efforts improve user experience, reliability, security, and overall product quality, enabling faster releases and better observability.
February 2026
7 Commits • 4 Features
Feb 1, 2026February 2026: Focused on delivering core UX enhancements, security improvements, and streamlined payment flows for mullvadvpn-app. Delivered an in-app update notification system, UI/UX refinements, and backend-driven cipher management. Fixed test reliability of critical UI flows, and removed legacy payment infrastructure to simplify maintenance. The changes reduce user friction, strengthen security posture, and improve CI stability.
7 Commits • 4 Features
Feb 1, 2026February 2026: Focused on delivering core UX enhancements, security improvements, and streamlined payment flows for mullvadvpn-app. Delivered an in-app update notification system, UI/UX refinements, and backend-driven cipher management. Fixed test reliability of critical UI flows, and removed legacy payment infrastructure to simplify maintenance. The changes reduce user friction, strengthen security posture, and improve CI stability.
February 2026
January 2026
8 Commits • 6 Features
Jan 1, 2026January 2026 monthly performance summary for Mullvad Mullvadvpn-app. Focused on UI/UX refinements, feature enablement, safety hardening, and cross-platform compatibility to improve reliability, user value, and developer velocity. Delivered key features, stabilized tests, and enhanced awareness of app updates and IAN routing.
January 2026
8 Commits • 6 Features
Jan 1, 2026January 2026 monthly performance summary for Mullvad Mullvadvpn-app. Focused on UI/UX refinements, feature enablement, safety hardening, and cross-platform compatibility to improve reliability, user value, and developer velocity. Delivered key features, stabilized tests, and enhanced awareness of app updates and IAN routing.
December 2025
5 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for mullvad/mullvadvpn-app focusing on delivering high-impact features, improving logging clarity, and strengthening CI/CD reliability. Key outcomes include a security/UX enhancement through randomized Shadowsocks bridge configurations, clearer error logging via a custom error description mechanism, and more observable, reliable builds and tests through CI/CD workflow improvements and quantum-resistance test alignment. These efforts collectively reduce risk in connections, improve developer efficiency in debugging, and increase release confidence across iOS builds.
5 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for mullvad/mullvadvpn-app focusing on delivering high-impact features, improving logging clarity, and strengthening CI/CD reliability. Key outcomes include a security/UX enhancement through randomized Shadowsocks bridge configurations, clearer error logging via a custom error description mechanism, and more observable, reliable builds and tests through CI/CD workflow improvements and quantum-resistance test alignment. These efforts collectively reduce risk in connections, improve developer efficiency in debugging, and increase release confidence across iOS builds.
December 2025
November 2025
5 Commits • 3 Features
Nov 1, 2025November 2025 (mullvad/mullvadvpn-app): Delivered critical updates across payments, VPN relay filtering, and test reliability. Payment system enhancements added in-app purchase capability with API downtime safeguards, supported by tests for the account view and outage protection. VPN Relay Filtering Enhancements introduced distinct entry and exit filters for tunnel settings to improve relay control and performance. Testing Framework Reliability and Performance Improvements optimized UI test wait times and stabilized tests, accelerating CI and release readiness. These efforts reduced transactional risk during outages, improved VPN performance through finer relay control, and shortened feedback cycles for faster iteration.
November 2025
5 Commits • 3 Features
Nov 1, 2025November 2025 (mullvad/mullvadvpn-app): Delivered critical updates across payments, VPN relay filtering, and test reliability. Payment system enhancements added in-app purchase capability with API downtime safeguards, supported by tests for the account view and outage protection. VPN Relay Filtering Enhancements introduced distinct entry and exit filters for tunnel settings to improve relay control and performance. Testing Framework Reliability and Performance Improvements optimized UI test wait times and stabilized tests, accelerating CI and release readiness. These efforts reduced transactional risk during outages, improved VPN performance through finer relay control, and shortened feedback cycles for faster iteration.
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
Loading activity data...
Quality Metrics
Correctness89.6%
Maintainability87.2%
Architecture85.0%
Performance82.6%
AI Usage21.4%
Skills & Technologies
Programming Languages
CMarkdownN/AObjective-CRubyRustSVGShellSwiftSwiftUI
Technical Skills
API IntegrationAccessibilityAccessibility DesignActor ModelAsynchronous ProgrammingAutomated TestingBuild ScriptingC/Objective-C InteroperabilityCI/CDCachingCode RefactoringConcurrencyConfiguration ManagementContinuous IntegrationCoordinator Pattern
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline