mullvad/mullvadvpn-app
Feb 2024 – Apr 2026
14 Months active
Languages Used
NixRustGradleJavaScriptKotlinMarkdownShellSwift
Technical Skills
NixOS configurationRust programmingnetworkingpacket captureweb developmentAsset Management
Emīls
PROFILE
Emīls
Over 14 months, contributed to the mullvad/mullvadvpn-app repository by delivering 74 features and resolving 27 bugs, focusing on VPN stability, cross-platform networking, and user experience. Work included implementing IPv6 support, dynamic relay selection, and robust obfuscation methods, while modernizing the API layer using Rust and Swift. Enhanced accessibility and localization, optimized build and CI/CD pipelines, and improved error handling and observability. Leveraged technologies such as Rust, Swift, and NixOS to streamline deployment, strengthen security, and reduce maintenance overhead. The approach emphasized modular architecture, thorough testing, and performance optimization, resulting in a more reliable and maintainable VPN application.
Overall Statistics
Feature vs Bugs
73%Features
Repository Contributions
176Total
Bugs
27
Commits
176
Features
74
Lines of code
20,784
Activity Months14
Your Network
62 peopleSame Organization
@mullvad.net20
Shared Repositories
42
Work History
April 2026
7 Commits • 4 Features
Apr 1, 2026April 2026 monthly summary for mullvadvpn-app: Delivered performance optimizations, robust cryptography/type-system enhancements, dynamic tunneling with GotaTun, and improved user warnings. Key outcomes include faster relay selection, reliable concurrent file access, a unified WireGuard key model, toggled tunneling implementations, and immediate configuration application. All changes align with business goals to reduce connection time, improve stability, and simplify future maintenance.
7 Commits • 4 Features
Apr 1, 2026April 2026 monthly summary for mullvadvpn-app: Delivered performance optimizations, robust cryptography/type-system enhancements, dynamic tunneling with GotaTun, and improved user warnings. Key outcomes include faster relay selection, reliable concurrent file access, a unified WireGuard key model, toggled tunneling implementations, and immediate configuration application. All changes align with business goals to reduce connection time, improve stability, and simplify future maintenance.
April 2026
March 2026
18 Commits • 8 Features
Mar 1, 2026March 2026 performance snapshot for mullvadvpn-app focusing on reliability, user experience, and architectural modernization. Key capabilities were delivered with on-disk relay data persistence and on-demand refresh, API modernization via MullvadRustRuntime, and UX improvements including onboarding prompt refinements, a new Force All Apps VPN option, and enhanced status localization. The period also included essential infrastructure work, such as upgrading WireGuard integration, enabling Lightweight Obfuscation (LWO) in automatic selection, and strengthening QA for multihop/DAITA routing. These changes reduce external dependencies, speed up updates, and improve international usability, ultimately reducing support cost and increasing customer trust.
March 2026
18 Commits • 8 Features
Mar 1, 2026March 2026 performance snapshot for mullvadvpn-app focusing on reliability, user experience, and architectural modernization. Key capabilities were delivered with on-disk relay data persistence and on-demand refresh, API modernization via MullvadRustRuntime, and UX improvements including onboarding prompt refinements, a new Force All Apps VPN option, and enhanced status localization. The period also included essential infrastructure work, such as upgrading WireGuard integration, enabling Lightweight Obfuscation (LWO) in automatic selection, and strengthening QA for multihop/DAITA routing. These changes reduce external dependencies, speed up updates, and improve international usability, ultimately reducing support cost and increasing customer trust.
February 2026
45 Commits • 16 Features
Feb 1, 2026February 2026 focused on stability, performance under concurrency, and accessibility improvements for mullvadvpn-app. Delivered data-layer hardening, UI/server-list enhancements, expanded testing and CI coverage, and reliability enhancements for debugging and state communications. These changes reduce contention, improve user experience, and enable faster issue diagnosis, delivering measurable business value.
45 Commits • 16 Features
Feb 1, 2026February 2026 focused on stability, performance under concurrency, and accessibility improvements for mullvadvpn-app. Delivered data-layer hardening, UI/server-list enhancements, expanded testing and CI coverage, and reliability enhancements for debugging and state communications. These changes reduce contention, improve user experience, and enable faster issue diagnosis, delivering measurable business value.
February 2026
January 2026
50 Commits • 19 Features
Jan 1, 2026In 2026-01, mullvadvpn-app delivered IPv6 networking/UI across obfuscators, relay selection, tunnel settings, Mullvad endpoint overrides, and UI integration, with an end-to-end IPv6 test and a new UI IPv6 setting. Introduced LWO obfuscator. Completed a Swift platform migration, moved relay data storage to CachedRelays, and implemented location data source optimization with visible locations UI. Strengthened observability and QA via MullvadLogging integration and an improved logging stack, plus enhanced test reporting. Key reliability wins include path update/offline state fixes, race-condition hardening, and test stabilization (skipping flaky tests, disabling brittle payment tests). These changes improve user connectivity, reliability, and developer productivity by reducing startup costs, improving CI stability, and enabling faster debugging.
January 2026
50 Commits • 19 Features
Jan 1, 2026In 2026-01, mullvadvpn-app delivered IPv6 networking/UI across obfuscators, relay selection, tunnel settings, Mullvad endpoint overrides, and UI integration, with an end-to-end IPv6 test and a new UI IPv6 setting. Introduced LWO obfuscator. Completed a Swift platform migration, moved relay data storage to CachedRelays, and implemented location data source optimization with visible locations UI. Strengthened observability and QA via MullvadLogging integration and an improved logging stack, plus enhanced test reporting. Key reliability wins include path update/offline state fixes, race-condition hardening, and test stabilization (skipping flaky tests, disabling brittle payment tests). These changes improve user connectivity, reliability, and developer productivity by reducing startup costs, improving CI stability, and enabling faster debugging.
December 2025
16 Commits • 3 Features
Dec 1, 2025December 2025 – Mullvadvpn-app: Delivered key VPN stability improvements and network configuration hardening, delivering measurable business value through reduced disruption, smoother user experience, and improved CI/test readiness. Focused on reliable tunnel operation, optimized error handling, and streamlined deployment readiness, with efforts spanning VPN stability, router/network hardening, and documentation updates.
16 Commits • 3 Features
Dec 1, 2025December 2025 – Mullvadvpn-app: Delivered key VPN stability improvements and network configuration hardening, delivering measurable business value through reduced disruption, smoother user experience, and improved CI/test readiness. Focused on reliable tunnel operation, optimized error handling, and streamlined deployment readiness, with efforts spanning VPN stability, router/network hardening, and documentation updates.
December 2025
November 2025
3 Commits • 3 Features
Nov 1, 2025November 2025: Mullvad Mullvadvpn-app delivered key features and reliability improvements across iOS build automation, network compatibility, and localization/UI enhancements. Focused on business value: streamlined CI/CD, broader VPN compatibility, and improved accessibility for multilingual users.
November 2025
3 Commits • 3 Features
Nov 1, 2025November 2025: Mullvad Mullvadvpn-app delivered key features and reliability improvements across iOS build automation, network compatibility, and localization/UI enhancements. Focused on business value: streamlined CI/CD, broader VPN compatibility, and improved accessibility for multilingual users.
October 2025
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Mullvad Mullvadvpn-app (mullvad/mullvadvpn-app) Key features delivered: - 2025.6 Release: WireGuard privacy improvements via QUIC obfuscation; UX enhancements with clickable feature indicators; ability to cancel problem reports; device management from the account view; Dynamic Type accessibility support; user-facing notification for unsupported WireGuard ports. Major bugs fixed: - No specific bugs enumerated in the provided data; release-level improvements focus on privacy, compatibility, and UX stability. Overall impact and accomplishments: - Strengthened privacy posture and network compatibility for WireGuard usage, improved user experience and accessibility, and streamlined device management from the account view. The work represents a cohesive release effort that enhances trust and ease of use for customers. Technologies/skills demonstrated: - WireGuard/QUIC integration, iOS accessibility (Dynamic Type), UI/UX enhancements, account management workflows, release engineering (changelog maintenance).
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Mullvad Mullvadvpn-app (mullvad/mullvadvpn-app) Key features delivered: - 2025.6 Release: WireGuard privacy improvements via QUIC obfuscation; UX enhancements with clickable feature indicators; ability to cancel problem reports; device management from the account view; Dynamic Type accessibility support; user-facing notification for unsupported WireGuard ports. Major bugs fixed: - No specific bugs enumerated in the provided data; release-level improvements focus on privacy, compatibility, and UX stability. Overall impact and accomplishments: - Strengthened privacy posture and network compatibility for WireGuard usage, improved user experience and accessibility, and streamlined device management from the account view. The work represents a cohesive release effort that enhances trust and ease of use for customers. Technologies/skills demonstrated: - WireGuard/QUIC integration, iOS accessibility (Dynamic Type), UI/UX enhancements, account management workflows, release engineering (changelog maintenance).
October 2025
September 2025
3 Commits • 1 Features
Sep 1, 2025September 2025 — Mullvad VPN (mullvadvpn-app) monthly summary focusing on business value and technical achievements. Key features delivered: - Arm64-only iOS build enabled by updating device capabilities (arm64 in Info.plist) and removing armv7; aligns with the 2025.7 release. (Commits acc184daaaaee1dde4058537cd5a39704815ed54; 22ea9b9cc2cf475dc6b46a10ef8f4b579b3e1dc9) - Release readiness: Version bumped to 2025.7 to reflect the release and ensure branding/marketing alignment. Major bugs fixed: - Obfuscation Method Selection Stability: now rejects unsupported obfuscation methods only when obfuscation state is 'automatic'; tests updated to reflect the bypass behavior. (Commit a693abbb7176fd7d1a604572667f8e6b22ba6577) Overall impact and accomplishments: - Reduced release risk through alignment of device capabilities with the latest iOS hardware profile and updated versioning; improved stability for newer devices and smoother App Store submission. Technologies/skills demonstrated: - iOS deployment practices (Info.plist, device capability management), versioning strategy, and test alignment; clear commit-based traceability.
September 2025
3 Commits • 1 Features
Sep 1, 2025September 2025 — Mullvad VPN (mullvadvpn-app) monthly summary focusing on business value and technical achievements. Key features delivered: - Arm64-only iOS build enabled by updating device capabilities (arm64 in Info.plist) and removing armv7; aligns with the 2025.7 release. (Commits acc184daaaaee1dde4058537cd5a39704815ed54; 22ea9b9cc2cf475dc6b46a10ef8f4b579b3e1dc9) - Release readiness: Version bumped to 2025.7 to reflect the release and ensure branding/marketing alignment. Major bugs fixed: - Obfuscation Method Selection Stability: now rejects unsupported obfuscation methods only when obfuscation state is 'automatic'; tests updated to reflect the bypass behavior. (Commit a693abbb7176fd7d1a604572667f8e6b22ba6577) Overall impact and accomplishments: - Reduced release risk through alignment of device capabilities with the latest iOS hardware profile and updated versioning; improved stability for newer devices and smoother App Store submission. Technologies/skills demonstrated: - iOS deployment practices (Info.plist, device capability management), versioning strategy, and test alignment; clear commit-based traceability.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 Monthly Summary - mullvad/mullvadvpn-app Key features delivered: - DAITA Parameter Handling in Peer Exchange: Implemented fix to save DAITA parameters only when the negotiation state is 'negotiatingWithEntry'; adjusts peer configuration to set daitaParameters to nil in other scenarios to prevent unintended data propagation during peer exchange. - Test Router Setup Simplification: Streamlined test infrastructure by removing WiFi AP configuration from the iOS test router setup, eliminating the need for a WiFi interface and related config files to focus on wired network interfaces. Major bugs fixed: - Fixed DAITA parameter handling bug to prevent data leakage during peer exchange by correcting save conditions and configuration paths. Commit: 6b9c74c6ecd22d7469b535aa675867634ce95a52. Overall impact and accomplishments: - Increased correctness and data isolation in peer exchange flows, reducing the risk of unintended data propagation. - Improved test reliability and CI efficiency by simplifying test infra and removing WiFi dependencies. - Faster feedback loop for networking parameter handling changes, enabling more rapid iteration on negotiation logic. Technologies/skills demonstrated: - Swift/iOS development, networking parameter management, and negotiation/state handling. - Test infrastructure optimization and disciplined commit-based changes in a shipping project. - Clear verification of business value through reduction in data leakage risk and CI complexity.
2 Commits • 1 Features
Mar 1, 2025March 2025 Monthly Summary - mullvad/mullvadvpn-app Key features delivered: - DAITA Parameter Handling in Peer Exchange: Implemented fix to save DAITA parameters only when the negotiation state is 'negotiatingWithEntry'; adjusts peer configuration to set daitaParameters to nil in other scenarios to prevent unintended data propagation during peer exchange. - Test Router Setup Simplification: Streamlined test infrastructure by removing WiFi AP configuration from the iOS test router setup, eliminating the need for a WiFi interface and related config files to focus on wired network interfaces. Major bugs fixed: - Fixed DAITA parameter handling bug to prevent data leakage during peer exchange by correcting save conditions and configuration paths. Commit: 6b9c74c6ecd22d7469b535aa675867634ce95a52. Overall impact and accomplishments: - Increased correctness and data isolation in peer exchange flows, reducing the risk of unintended data propagation. - Improved test reliability and CI efficiency by simplifying test infra and removing WiFi dependencies. - Faster feedback loop for networking parameter handling changes, enabling more rapid iteration on negotiation logic. Technologies/skills demonstrated: - Swift/iOS development, networking parameter management, and negotiation/state handling. - Test infrastructure optimization and disciplined commit-based changes in a shipping project. - Clear verification of business value through reduction in data leakage risk and CI complexity.
March 2025
February 2025
6 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for mullvadvpn-app focusing on delivering business value through localization improvements, startup observability, network obfuscation experimentation, API resiliency, and cross-language build stability.
February 2025
6 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for mullvadvpn-app focusing on delivering business value through localization improvements, startup observability, network obfuscation experimentation, API resiliency, and cross-language build stability.
January 2025
8 Commits • 4 Features
Jan 1, 2025January 2025: Mullvad VPN App (mullvadvpn-app) delivered cross-platform release readiness, staging/test improvements, DNS privacy updates, and WireGuard reliability enhancements. Key outcomes include alignment of 2025.1 release notes and versioning for Desktop and iOS; staging environment networking improvements; removal of Google DoH provider from DoH options; and internal WireGuard maintenance with a dependency upgrade and concurrency improvements. These changes enable faster, more predictable releases, better testability in staging, privacy-respecting defaults, and a more robust VPN core.
8 Commits • 4 Features
Jan 1, 2025January 2025: Mullvad VPN App (mullvadvpn-app) delivered cross-platform release readiness, staging/test improvements, DNS privacy updates, and WireGuard reliability enhancements. Key outcomes include alignment of 2025.1 release notes and versioning for Desktop and iOS; staging environment networking improvements; removal of Google DoH provider from DoH options; and internal WireGuard maintenance with a dependency upgrade and concurrency improvements. These changes enable faster, more predictable releases, better testability in staging, privacy-respecting defaults, and a more robust VPN core.
January 2025
December 2024
13 Commits • 8 Features
Dec 1, 2024December 2024 highlights: Delivered core architecture improvements, monetization enhancements, and reliability improvements for mullvadvpn-app. Key features include DAITA v2 Relay-based Dynamic Provisioning for iOS, StoreKit2-based in-app subscriptions, and VPN Core Networking updates with Async Key Exchange and IAN-based ephemeral peer exchange. Upgraded WireGuard-Apple for stability, refactored startup and API endpoint configuration for cleaner initialization and testability, and strengthened build, testing, and tooling with Mockito and unit-test fixes. Release notes and versioning were aligned with the 2024.12 cycle to support smoother iOS releases. Business value delivered includes faster provisioning, new monetization capability, improved connection reliability, and easier maintenance for the codebase.
December 2024
13 Commits • 8 Features
Dec 1, 2024December 2024 highlights: Delivered core architecture improvements, monetization enhancements, and reliability improvements for mullvadvpn-app. Key features include DAITA v2 Relay-based Dynamic Provisioning for iOS, StoreKit2-based in-app subscriptions, and VPN Core Networking updates with Async Key Exchange and IAN-based ephemeral peer exchange. Upgraded WireGuard-Apple for stability, refactored startup and API endpoint configuration for cleaner initialization and testability, and strengthened build, testing, and tooling with Mockito and unit-test fixes. Release notes and versioning were aligned with the 2024.12 cycle to support smoother iOS releases. Business value delivered includes faster provisioning, new monetization capability, improved connection reliability, and easier maintenance for the codebase.
November 2024
3 Commits • 2 Features
Nov 1, 2024For 2024-11, delivered key features, critical stability fixes, and cross-cutting improvements in mullvadvpn-app, aligning with product goals for improved user experience, release readiness, and platform consistency. The month focused on UX clarity, asset management, and a deadlock fix with a corresponding version bump, resulting in a more stable, maintainable, and scalable app for end users and internal teams.
3 Commits • 2 Features
Nov 1, 2024For 2024-11, delivered key features, critical stability fixes, and cross-cutting improvements in mullvadvpn-app, aligning with product goals for improved user experience, release readiness, and platform consistency. The month focused on UX clarity, asset management, and a deadlock fix with a corresponding version bump, resulting in a more stable, maintainable, and scalable app for end users and internal teams.
November 2024
February 2024
1 Commits • 1 Features
Feb 1, 2024February 2024 monthly summary for mullvad/mullvadvpn-app focusing on the introduction of iOS Test Router Configuration for Router-as-a-Service (RaaS) testing. Delivered end-to-end configuration, NixOS setup, and Rust-based packet capture/processing to enable repeatable RaaS testing; aligned with QA and CI goals.
February 2024
1 Commits • 1 Features
Feb 1, 2024February 2024 monthly summary for mullvad/mullvadvpn-app focusing on the introduction of iOS Test Router Configuration for Router-as-a-Service (RaaS) testing. Delivered end-to-end configuration, NixOS setup, and Rust-based packet capture/processing to enable repeatable RaaS testing; aligned with QA and CI goals.
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Quality Metrics
Correctness94.0%
Maintainability88.8%
Architecture89.6%
Performance88.8%
AI Usage21.4%
Skills & Technologies
Programming Languages
BashCC++GoGradleJSONJavaJavaScriptKotlinMarkdown
Technical Skills
API DevelopmentAPI IntegrationAccessibilityAccessibility DesignAccessibility ImplementationAndroid DevelopmentAsset ManagementAsynchronous ProgrammingBuild ConfigurationBuild ManagementBuild SystemBuild System ConfigurationC/C++ ProgrammingCI/CDCaching
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