Senior Mobile Engineer - Remote

SpruceID builds privacy-preserving, standards-based digital identity and credentialing solutions that give individuals control of their information while enabling governments and enterprises to deliver secure, interoperable services. We partner with public-sector organizations to modernize how identity is issued, verified, and used.

As a Senior Mobile Engineer , you will sit at the intersection of engineering, customer delivery, and digital identity. You will work directly with state governments and other public-sector partners to design, build, and deploy mobile-first identity solutions, often serving as the primary technical representative of SpruceID in the field.

This role combines hands-on mobile development with consulting, systems design, and customer success. While much of our current work leverages Flutter, we are looking for engineers who are comfortable operating across multiple mobile environments-including native (iOS/Android) and cross-platform frameworks such as Flutter or React Native-as our technology stack evolves over time.

You will ensure SpruceID's mobile technology is deployed securely, effectively, and with lasting real-world impact, while contributing to decisions about how our mobile architecture grows and adapts.

This job is fully remote within the US.

What You'll Do

• Lead the design and development of mobile applications for state governments and enterprise customers across native and cross-platform environments (e.g., Flutter, React Native, iOS, Android)
• Work side-by-side with customer delivery leads, backend engineers, and UX designers to ensure successful, end-to-end deployments
• Translate customer and policy requirements into secure system designs and production-ready implementations across mobile and backend components
• Act as a trusted technical advisor to public-sector partners, guiding them through mobile security, identity standards, and platform best practices
• Build and ship privacy-preserving applications that meet public-sector requirements for security, accessibility, and compliance
• Integrate mobile applications with backend identity services, cryptographic libraries, and platform APIs
• Contribute to shared Rust and cross-platform libraries that run across backend services, mobile devices, and the browser
• Support customer deployments, debugging, and operational needs in real-world environments-whatever it takes to ensure success
• Step outside your primary stack when needed, contributing across mobile, backend, and infrastructure as projects evolve
• Represent SpruceID directly with partners during pilots, launches, and ongoing engagements

What we're looking for

• 5+ years of experience shipping production mobile applications
• Strong experience in at least one mobile framework (e.g., Flutter, React Native) and familiarity with native platforms (iOS and/or Android)
• Experience working across more than one mobile environment, or a demonstrated ability to quickly ramp across new frameworks and languages
• Proven ability to lead mobile architecture and deliver secure, production-grade systems
• Experience integrating mobile applications with backend services and APIs
• Solid understanding of mobile security concepts (secure storage, key management, authentication flows)
• Strong engineering fundamentals with the ability and willingness to contribute beyond mobile when needed
• Excellent communication skills and experience working directly with customers, ideally in a consulting or delivery-focused role
• A proactive, "can do / will do" mindset and comfort operating outside your primary area of expertise
• Based in the US and excited to engage directly with state government partners

Bonus Qualifications

• Experience with modern mobile languages and frameworks such as Kotlin, Swift, Objective-C, Dart, or TypeScript , and their associated ecosystems
• Hands-on experience with cross-platform frameworks such as Flutter or React Native in production environments
• Experience with digital identity, verifiable credentials, DIDs, or authentication systems
• Background in cryptography, data privacy, or building secure mobile systems
• Familiarity with platform-specific capabilities such as Keychain (iOS), Keystore (Android), biometrics, and secure enclaves
• Prior experience working on public-sector or government software projects
• Familiarity with Rust or interoperating with Rust-based mobile libraries (e.g., via FFI or shared modules)
• Experience meeting accessibility standards (e.g., WCAG, mobile accessibility best practices )
• Exposure to mobile CI/CD pipelines, app store deployment processes, and release management