Mobile Engineer, Digital Identity (Fully Remote)
Spruce Systems
Remote
USD 120k-200k / year + Equity
Posted on Dec 17, 2025
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 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 Flutter development with consulting, systems design, and customer success. You will ensure SpruceID’s mobile technology is deployed securely, effectively, and with lasting real-world impact.
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 using Flutter
- Work side-by-side with customer delivery leads, backend engineers, and UX designer to ensure successful deployments
- Translate customer and policy requirements into secure mobile architectures and production-ready implementations
- Act as a trusted technical advisor to public-sector partners, guiding them through mobile security, identity standards, and best practices
- Build and ship privacy-preserving mobile 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 or cross-platform libraries that run across backend services, mobile devices, and the browser
- Support customer deployments, debugging, and operational needs in real-world environments
- Represent SpruceID directly with partners during pilots, launches, and ongoing engagements
Qualifications
- 5+ years of experience shipping production mobile applications
- Strong experience building Flutter applications for iOS and Android
- Proven ability to lead mobile architecture and deliver secure, production systems
- Experience integrating mobile apps with backend services and APIs
- Familiarity with mobile security concepts (secure storage, key management, authentication flows)
- Excellent communication skills and experience working directly with customers, ideally in a consulting or delivery-focused role
- Based in the US and excited to engage directly with state government partners
Bonus Qualifications
- Experience with digital identity, verifiable credentials, DIDs, or authentication systems
- Background in cryptography, data privacy, or secure mobile systems
- Prior experience working on public-sector or government software projects
- Familiarity with Rust or interoperating with Rust-based mobile libraries
- Experience meeting accessibility standards (WCAG, mobile a11y)
120000 - 200000 USD a year
The actual base salary offered will depend on a variety of factors, including the candidate’s experience, qualifications, skill set, and work location. Compensation may also include additional components such as performance-based bonuses and/or equity, along with a benefits package.