Sr. Software Engineer – Mobile Engineer

Ontrac Solutions • Chicago, IL

10d

About The Position

We are seeking a highly skilled and experienced Senior Software Engineer (Mobile) to join a contractor program supporting a critical customer engagement: a state government professional licensing and regulatory compliance platform built on Google Cloud. This role is ideal for a senior mobile engineer who has shipped offline-first React Native applications to production on iOS and Android and can own a feature area end to end with minimal supervision. The successful candidate will work closely with the client technical lead, the backend engineering team, and customer stakeholders to ensure project success from initial definition through final delivery.

Requirements

• 7+ years of professional software engineering experience, including 3+ years with React Native
• At least one production application shipped to the Apple App Store or Google Play, or through enterprise distribution
• Bachelor's degree in Computer Science or equivalent practical experience
• React Native and TypeScript, including the Expo toolchain
• Comfortable working in the native iOS and Android layers (Xcode, Android Studio) to integrate, configure, and debug native modules
• Offline-first architecture: local SQLite storage, encryption at rest, and data synchronization
• Device hardware integration: camera, barcode/QR scanning, signature capture, GPS
• Authentication with OIDC/OAuth 2.0 (Okta or comparable) and secure token storage
• REST API integration against backend services
• Mobile testing with Jest and an E2E framework such as Detox or Maestro

Nice To Haves

• Enterprise tablet deployment and mobile device management
• Familiarity with Google Cloud Platform services
• Experience in government or regulated environments
• Mobile accessibility (WCAG 2.1 AA)
• Mobile CI/CD (EAS, Fastlane, GitHub Actions)

Responsibilities

• Build the offline-first field inspection tablet application on React Native / Expo for iPadOS and Android enterprise tablets
• Implement encrypted local storage for inspection checklists, violation records, and draft reports
• Implement barcode/QR credential scanning and digital stylus signature capture
• Implement photo evidence capture with timestamping and geotagging
• Build the background data synchronization engine between device and backend
• Integrate Okta authentication and secure session handling for field-deployed devices
• Deliver unit and E2E test coverage, participate in code reviews, and maintain the build and distribution pipeline for both platforms

What This Job Offers

• Job Type: Full-time
• Career Level: Senior