Senior Software Engineer – Mobile Fullstack
ButterflyMX
full-time
Posted on:
Location Type: Remote
Location: United States
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Job Level
About the role
- Partner with Product, Design, and other Engineering teams to help design, build, and evolve the APIs, services, and mobile applications that power our products
- Architect and build high-performance, cross-platform mobile applications for iOS and Android using React Native, delivering a native-quality user experience from a shared codebase
- Lead large-scale projects from ideation to launch with a customer-first mindset, spanning both mobile and backend layers
- Design, build, and maintain efficient, reusable, reliable, and testable code across the full stack
- Integrate with native device capabilities (push notifications, Bluetooth/NFC for access control, camera, GPS) using native modules and bridging where necessary
- Identify bottlenecks and bugs across mobile and backend systems, devise solutions and propose optimizations for performance, reliability, and user experience
- Work comfortably across front-end, mobile, and back-end layers of the architecture
- Implement patterns and systems allowing for independently deployable full-stack services at a level of granularity appropriate for team composition and business value
- Own the mobile build and release pipeline, including App Store and Google Play submission processes, code signing, and over-the-air update strategies
- Help maintain code quality, organization, and automatization
- Write new and improve current documentation
- Lead by example for other members of the team as a dedicated, passionate, and flexible technologist who is constantly striving to improve code quality, design, and system architecture
- Help define, document, evolve, and evangelize high engineering standards and best practices across mobile and backend development
Requirements
- 5+ years of professional development experience
- 4+ years of professional development experience in TypeScript, JavaScript
- 2+ years of hands-on experience building and shipping production React Native applications on both iOS and Android
- Strong understanding of React Native internals, navigation patterns (React Navigation), and state management (Redux, Zustand, or similar)
- Experience with mobile app distribution workflows: App Store Connect, Google Play Console, code signing, TestFlight, and OTA updates (e.g., CodePush or EAS Update)
- Strong experience with automated CI/CD pipelines, including mobile-specific CI
- Strong experience working in and advocating for Agile environments
- Deep understanding of testing and what, when, and how to test, including mobile-specific testing strategies (Jest, Detox, or Appium for E2E)
- Extensive experience with developing and maintaining APIs, as well as integrating with 3rd party APIs
- Hands-on experience working in a Distributed/Cloud-based environment (e.g. Amazon EC2/ECS, Lambdas, No-SQL DB, Azure, etc.) within a service-oriented architecture
- Experience working with relational databases and writing SQL queries
- Excellent verbal and written communication and collaboration skills to effectively communicate with both business and technical teams
- Comfortable working in a fast-paced, results-oriented environment
- Experience with the following: GraphQL, IoT device development
- Motivated by the desire to learn and collaborate, to own and improve, and to focus on what helps the business succeed
- Well versed in the disciplines of security, reliability, and scalability
- Well versed with Agile methodology and who believes in the value of a well written and appropriately defined user story
- User-focused with a keen sense of how your code will impact the user’s experience in terms of performance, security, and usability — especially on mobile where latency, battery life, and offline resilience directly affect user trust
- Passionate about frequent value delivery through collaboration with product owners, preferring MVPs and tight build-measure-learn loops to maximize value
- Someone who truly cares about leading and mentoring engineers
- Proven experience with leveraging AI tools in both professional and personal settings. ButterflyMX is an AI-forward organization and the ability to optimize efficiency using AI is crucial in every role.
Benefits
- Comprehensive Medical, Dental and Vision plans (ButterflyMX covers 80% of the cost) starting day 1
- 401(k) plan with a match
- 10 paid holidays, 20 vacation days, 5 sick days, 3 floating holidays
- Basic Life and Accidental Death and Dismemberment Insurance (ButterflyMX covers 100% of the cost)
- Short and Long Term Disability (ButterflyMX covers 100% of the cost)
- Paid Family Leave
- Employee Assistance Program
- Quarterly self-care stipends
- Access to optional benefits including pre-tax flexible healthcare spending accounts (FSA and HSA), Dependent Care FSA, and Commuter Benefits, as well as optional Supplemental Life, AD&D, Hospital Indemnity, Legal, Accident, Critical Illness, Pet, and Personal Liability Insurance
- And more!
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
TypeScriptJavaScriptReact NativeReact NavigationReduxZustandCI/CDSQLGraphQLmobile app testing
Soft Skills
communicationcollaborationleadershipproblem-solvingadaptabilityuser-focusedmentoringcustomer-first mindsetpassion for learningresults-oriented