Software Development Engineer II (Flutter)

• Develop the web platform support layer for the Mapbox Maps Flutter SDK, with the opportunity to dive into iOS and Android platforms support.
• Be responsible for feature development in SDK and application layers;
• Enhance the performance, stability, and simplicity of our products;
• Work on the latest technologies, including Dart;
• Working closely with iOS, Android, and web teams on system design and feature parity;
• Manage testing pipeline and release artifacts;
• Provide comprehensive documentation developers will find easy to follow;
• Review code and design documents, shepherd feature releases., * We believe in individuals being their whole selves at work. We commit to this through supportive health care, parental leave, flexibility for the things that come up in life, and innovating on how we think about supporting our people.
• We emphasize an environment of teaching and learning to equip employees with the tools needed to be successful in their function and the company.
• We strongly believe in the value of growing a diverse team and encourage people of all backgrounds, genders, ethnicities, abilities, and sexual orientations to apply.

• Strong proficiency in Dart and JavaScript with 3+ years of experience;
• Strong experience with browser technologies and web platform APIs;
• Performance optimization in browser environments (profiling, debugging perf bottlenecks)
• Understanding of browser rendering pipeline and compositing
• Understanding of browser concurrency constraints (single-threaded rendering, offloading work via Web Workers / Dart isolates, async patterns)
• Deferred loading and bundle optimization strategies for web apps (Dart deferred imports, tree shaking, WASM compilation)
• Cross-browser (Chrome, Safari, Firefox) testing;
• Desire to build frameworks with robust iterative improvements to API;
• Understanding the customer feedback loop and driving it to the highest standard;
• Being an excellent team player with the ability to work within a collaborative environment;
• Desire to learn and to teach;
• Passion about programming and having a strong focus on performance aspects;
• Implementation of automated testing and CI pipelines (e.g. CircleCI and GitHub Actions);
• Proficient understanding of code versioning tools such as Git;
• Familiarity with or a desire to learn more about C++ is a plus;
• Experience building SDKs or working cross-platform in any language is a plus.

Mapbox is the leading real-time location platform for a new generation of location-aware businesses. Mapbox is the only platform that equips organizations with the full set of tools to power the navigation of people, packages, and vehicles everywhere. More than 4 million registered developers have chosen Mapbox because of the platform's flexibility, security and privacy compliance. Organizations use Mapbox applications, data, SDKs and APIs to create customized and immersive experiences that delight their customers.