Senior Software Engineer role at Everfox, working with modern C++ on cross-platform desktop (Linux, Windows) and mobile (Android, iOS) apps, plus Java/Kotlin, Swift/Objective-C, Qt, GitLab, Docker, Kubernetes, and Python. You will build and maintain the end-point software layer for the Hardsec product line’s secure browsing and VDI solution, owning design, development, and delivery. You will also coordinate a small team of engineers and manage release planning across multi-platform shipped products.

Proton★5.0 (1)· London

Join Proton's Inbox Desktop team to rebuild the Proton Mail Desktop App, Mail Bridge and Export tool using a cross-platform Rust stack. You'll work with Golang, C++, Qt, JS, TypeScript, React, Electron and standard dev tools (Git, GitLab CI, Jira). You’ll take technical ownership of the Windows and Linux desktop clients within a cross-functional team of about 60 engineers.

Spotify★4.1 (116)· London

You'll develop Android components in Kotlin that capture listening signals and user behavior across Spotify's mobile apps, building high-quality, well-tested code for business-critical datasets powering royalty reporting, analytics, and personalization. You'll collaborate with Android, iOS, backend, and data teams to deliver end-to-end solutions and improve the architecture and reliability of Spotify's client-side data collection systems at scale.

Spotify★4.1 (116)· London

You'll design and build C++ integration layers for Spotify's TV playback, working with native media frameworks like AVPlayer and ExoPlayer on a Rust runtime. The Native Playback team owns critical systems including buffering, A/V synchronization, adaptive bitrate configuration, and rendering across TV devices, directly impacting millions of users' listening experience. You'll debug complex performance issues across application and OS layers, partner with platform teams, and improve test coverage and observability.

You'll work with C++, mobile platforms (iOS, Android, macOS, Windows), CMake, CI pipelines, and AI-assisted workflows to build automated reliability foundations for Titan, Supercell's engine powering top-grossing mobile games. The role focuses on validation systems, regression detection, and end-to-end testing across real devices, helping engine teams move faster while reducing risk to games reaching millions of players. You'll partner across client, server, and live-ops teams to establish testability and reliability practices for this new, autonomous Reliability team.

Canva★4.3 (32)· London

You'll build high-performance UIs in C++ and Objective-C for the Affinity product suite, optimizing code for responsiveness and memory while working on native macOS and iOS interfaces supporting mouse, touch, and stylus input. The Affinity team at Canva creates photo editing, vector design, and layout applications for creatives. You'll contribute to architectural decisions across shared libraries and collaborate with design and QA teams.