Staff Mobile Software Engineer (React Native / Flutter) - Remote

Staff Mobile Software Engineer (React Native / Flutter) - 4-month contract to hire - 100% Remote

Optomi, in partnership with a national leader in rail transportation and logistics, is seeking a Staff Software Engineer to join a high-impact engineering team responsible for building next-generation mobile applications that integrate with real-world devices and field hardware. This role will play a critical part in designing and developing mobile solutions from the ground up, translating business requirements and UX concepts into scalable, production-ready React Native applications, with a long-term focus on Flutter.

What the Right Candidate Will Enjoy:

• Leading the development of brand-new mobile applications from existing web platforms
• Influencing architecture, system design, and mobile strategy decisions
• Working on applications that interact with real-world devices such as sensors, cameras, and GPS hardware
• Owning solutions end-to-end across mobile front end, backend services, and integrations
• Helping shape the long-term transition toward Flutter as the strategic mobile platform

Qualifications:

• Strong experience developing mobile applications using React Native and/or Flutter
• Experience designing and delivering mobile applications from scratch
• Solid system design and architecture experience, including scalable mobile and backend integrations
• Experience translating business requirements and UX concepts into technical solutions
• Experience working with device integrations such as sensors, cameras, GPS, or other hardware-connected systems
• Strong understanding of mobile application performance, scalability, and maintainability best practices

Responsibilities:

• Design and develop mobile applications using React Native and Flutter
• Lead architecture and system design for new mobile platforms built from existing web solutions
• Translate business and UX requirements into scalable technical implementations
• Build full-stack capabilities, including backend services and integrations where needed
• Integrate mobile applications with field devices such as sensors, cameras, and GPS systems
• Collaborate with product, UX, and engineering teams to deliver high-quality user experiences
• Establish best practices for mobile development, testing, and deployment
• Contribute to long-term mobile strategy, including Flutter adoption and modernization efforts