Title: Senior Lead Engineer - React Native (Mobile Apps)

Diligent Tec, Inc; Framingham (MA); On-site; USD 120,000 - 150,000; Full time

Job summary

A leading tech company located in Framingham, MA, is seeking a Senior Lead Engineer - React Native to drive the mobile architecture and lead the engineering team. This role involves building high-performance applications using React Native and TypeScript, mentoring other engineers, and implementing best practices for mobile development. The ideal candidate will have extensive experience in mobile architecture and deploying apps to the App Store and Google Play. This position offers an on-site work environment.

Qualifications

• 10+ years of software development experience.
• 6+ years of hands-on mobile development experience.
• 4+ years leading React Native applications in production environments.

Responsibilities

• Provide technical leadership and oversee mobile engineering operations.
• Define and drive the mobile architecture strategy.
• Lead the design and development of scalable mobile applications.

Skills

React Native

TypeScript

Mobile DevOps

CI/CD

Agile environments

Mobile security frameworks

Education

Bachelor’s or Master’s degree in Computer Science, Engineering, or related field

Tools

Expo

Swift

Kotlin

Jest

Fastlane

Job description

Job Title: Senior Lead Engineer - React Native (Mobile Apps)
Location: Framingham, MA - on-site

Job Description:
We're looking for a Senior Lead Engineer - React Native with deep experience designing and building scalable, high-performance mobile applications using React Native, TypeScript, Expo, and modern mobile architecture patterns. This role will play a critical part in shaping the technical direction of our mobile platform, driving architecture decisions, optimizing performance, and delivering enterprise-grade mobile experiences.

What You’ll Be Doing

• Provide technical leadership and oversee the daily mobile engineering operations.
• Define and drive the mobile architecture strategy aligned with business goals.
• Lead the design and development of scalable, high-performance mobile applications using React Native and TypeScript.
• Architect modular, reusable component systems and scalable state management solutions (Redux, Zustand, Context API, etc.).
• Design clean navigation, deep linking, and mobile routing strategies (React Navigation, Expo Router).
• Implement secure authentication flows (OAuth/OIDC, biometrics, secure storage, token lifecycle management).
• Drive native module integrations (Swift, Kotlin) for SDKs such as payments, fraud detection, analytics, push notifications, and device security.
• Optimize mobile performance (startup time, bundle size, memory usage, rendering performance, offline caching).
• Establish CI/CD pipelines for mobile (Fastlane, EAS Build, App Store Connect, Google Play Console).
• Lead app release management, versioning strategy, and store compliance.
• Ensure adherence to mobile security best practices, privacy compliance, and accessibility standards.
• Partner with backend teams to define API contracts and optimize mobile-backend interactions.
• Champion automated testing (Jest, React Native Testing Library, Detox) and code quality standards.
• Mentor engineers and foster a culture of ownership, craftsmanship, and continuous improvement.
• Participate in architecture reviews and roadmap planning for long-term mobile platform scalability.

What You Bring to the Table

• Strong hands-on experience building production-grade apps using React Native and TypeScript.
• Deep understanding of Expo ecosystem (EAS, OTA updates, build pipelines, native configuration).
• Expertise in mobile architecture patterns (Clean Architecture, MVVM, modular architecture).
• Experience integrating native iOS (Swift) and Android (Kotlin) modules into React Native apps.
• Strong understanding of app lifecycle, memory management, threading, and performance tuning.
• Experience implementing push notifications, deep linking, analytics SDKs, and mobile security frameworks.
• Familiarity with authentication flows (OIDC, PKCE, secure token handling).
• Experience with API integrations (REST, GraphQL) and handling network resiliency/offline-first design.
• Strong understanding of mobile DevOps, CI/CD, and release governance.
• Experience collaborating in Agile environments and influencing cross-functional stakeholders.
• Ability to balance hands-on development with strategic architectural leadership.

Basic Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field (or equivalent experience).
• 10+ years of software development experience.
• 6+ years of hands-on mobile development experience.
• 4+ years leading React Native applications in production environments.
• Proven experience delivering apps to both Apple App Store and Google Play Store.
• Experience working with cloud-based backends (Azure, AWS, or GCP).
• Strong experience with CI/CD pipelines, automated testing, and DevOps best practices.
• Demonstrated leadership experience mentoring engineers and guiding technical direction.
• Strong problem-solving skills with the ability to make strategic architectural decisions balancing business and technical needs.