Senior Software Engineer II - Mobile Platform

About the role:

At Samsara, the Mobile Platform team is at the forefront of our mobile innovation, championing developer velocity and consistency. We craft, maintain, and evolve the core frameworks and tooling that empower every engineering team to build exceptional mobile applications for our customers. Your contributions will be pivotal in shaping mobile-first experiences across the organization as we continue to expand our product offerings and innovate in service of our customers. Our responsibilities span a wide array of critical infrastructure, from reusable UX components and design systems to seamless continuous integration pipelines, insightful monitoring tools, and resilient networking and persistence layers. These foundational systems are widely adopted across diverse applications and business units, driving significant impact throughout the entire company.

We use React Native, Typescript and Redux for our mobile apps, Golang for our backend, and GraphQL to communicate between them.

This is a remote position open to candidates residing in the US.

You should apply if:

• You want to impact the industries that run our world: The software, firmware, and hardware you build will result in real-world impact—helping to keep the lights on, get food into grocery stores, and most importantly, ensure workers return home safely.
• You want to build for scale: With over 2.3 million IoT devices deployed to our global customers, you will work on a range of new and mature technologies driving scalable innovation for customers across industries driving the world's physical operations.
• You are a life-long learner: We have ambitious goals. Every Samsarian has a growth mindset as we work with a wide range of technologies, challenges, and customers that push us to learn on the go.
• You believe customers are more than a number: Samsara engineers enjoy a rare closeness to the end user and you will have the opportunity to participate in customer interviews, collaborate with customer success and product managers, and use metrics to ensure our work is translating into better customer outcomes.
• You are a team player: Working on our Samsara Engineering teams requires a mix of independent effort and collaboration. Motivated by our mission, we’re all racing toward our connected operations vision, and we intend to win—together.

In this role, you will:

• Drive Technical Direction: Contribute to architectural decisions and strategic planning for the mobile platform, influencing our technical roadmap.
• Develop and Optimize: Build and deliver high-quality, performant, and user-friendly mobile application features. You'll focus on writing clean, maintainable code and optimizing for responsiveness and efficiency.
• Ensure Code Quality: Uphold and promote high standards for code quality through rigorous peer reviews, comprehensive testing, and adherence to mobile development best practices.
• Build Reusable UI Components: Design and implement polished, accessible, and consistent UI components, ensuring an exceptional user experience across our mobile platforms while enabling other teams to move faster by utilizing the components and patterns you create.
• Collaborate Cross-Functionally: Work closely with product managers, designers, and engineers across other teams to translate requirements into robust and scalable mobile solutions.
• Support and Mentor: Share your expertise by mentoring more junior engineers and actively contributing to knowledge-sharing initiatives that elevate the team's capabilities.
• Champion, role model, and embed Samsara’s cultural principles (Focus on Customer Success, Build for the Long Term, Adopt a Growth Mindset, Be Inclusive, Win as a Team) as we scale globally and across new offices.

Minimum requirements for the role:

• 6+ years of software development experience, including 3+ years of hands-on mobile app development with React Native in production environments.
• Deep knowledge of React Native as a mobile-first framework, including a strong grasp of its architecture, native components, and limitations.
• Solid testing and debugging skills in a mobile context, including experience writing unit and integration tests to maintain app stability and quality.
• Strong understanding of mobile architecture, performance, and platform APIs.
• Proficiency in using GraphQL and Redux for efficient data fetching and state management.
• Experience collaborating cross-functionally with product, design, and backend teams to deliver high-quality mobile features.
• Demonstrated experience in mentoring less experienced engineers and leading technical projects from conception to delivery with multiple contributors.

An ideal candidate also has:

• Experience with native mobile development (Swift/Objective-C and Kotlin/Java), including creating native modules or bridging React Native with native iOS and Android code.
• Track record of performance tuning in mobile apps, including using profiling tools and techniques to diagnose and resolve performance issues.
• Hands-on experience ensuring mobile app accessibility compliance, applying best practices to make the app usable by all customers.
• Familiarity with mobile CI/CD pipelines, build tools, and test automation.
• Experience working with microservices.
• Experience shipping and maintaining features over several years, demonstrating long-term ownership.
• Domain experience in logistics, fleet management, or industrial IoT, especially building mobile apps for drivers or field workers.