Freelance Developer – PWA Code Review & Security/Compatibility Update (React Native + Java)
Budget: $15 – $25 CAD
Project Type: Freelance / Contract
Location: Remote
Start Date: Immediate
Duration: Estimated 15–25 hours (depending on codebase complexity)
Overview:
We are seeking a skilled freelance developer to review and update the codebase of a Progressive Web App (PWA) built with React Native (frontend) and Java (backend). The app is fully web-based and not OS-specific but must meet modern security and compatibility standards across Android and iOS browsers.
This includes reviewing the backend code, ensuring secure API integrations, verifying PWA functionality (offline support, responsiveness, service workers), and updating code as necessary.
⸻
Responsibilities:
• Perform a comprehensive audit of the frontend and backend code
• Identify and fix:
• Security vulnerabilities (e.g. outdated dependencies, unsafe API calls)
• Compatibility issues with the latest Android/iOS mobile browsers
• PWA-specific features, including caching, service workers, and installability
• Review and secure Java backend/API integrations
• Ensure the app aligns with current web performance and security standards
• Make all changes via GitHub, using branch-based updates and proper commit documentation
• Provide a summary of findings, implemented changes, and recommendations for ongoing maintenance
⸻
Requirements:
• Experience with React Native for web/PWA applications
• Solid knowledge of Java backend development (especially RESTful APIs)
• Deep understanding of PWA architecture and browser compatibility
• Strong background in web security protocols (CSP, HTTPS, CORS, OAuth, etc.)
• Proficient with Git and GitHub, including pull requests, branching strategy, and version control best practices
• Comfortable working independently with clear deliverables
⸻
Nice to Have:
• Familiarity with Docker or container-based environments
• Experience deploying PWAs to production
• Exposure to Firebase, AWS, or similar platforms
⸻
To Apply:
Submit a short proposal including your relevant experience, GitHub profile or code samples, estimated timeline, and hourly or project-based rate.
Location: Remote
Start Date: Immediate
Duration: Estimated 15–25 hours (depending on codebase complexity)
Overview:
We are seeking a skilled freelance developer to review and update the codebase of a Progressive Web App (PWA) built with React Native (frontend) and Java (backend). The app is fully web-based and not OS-specific but must meet modern security and compatibility standards across Android and iOS browsers.
This includes reviewing the backend code, ensuring secure API integrations, verifying PWA functionality (offline support, responsiveness, service workers), and updating code as necessary.
⸻
Responsibilities:
• Perform a comprehensive audit of the frontend and backend code
• Identify and fix:
• Security vulnerabilities (e.g. outdated dependencies, unsafe API calls)
• Compatibility issues with the latest Android/iOS mobile browsers
• PWA-specific features, including caching, service workers, and installability
• Review and secure Java backend/API integrations
• Ensure the app aligns with current web performance and security standards
• Make all changes via GitHub, using branch-based updates and proper commit documentation
• Provide a summary of findings, implemented changes, and recommendations for ongoing maintenance
⸻
Requirements:
• Experience with React Native for web/PWA applications
• Solid knowledge of Java backend development (especially RESTful APIs)
• Deep understanding of PWA architecture and browser compatibility
• Strong background in web security protocols (CSP, HTTPS, CORS, OAuth, etc.)
• Proficient with Git and GitHub, including pull requests, branching strategy, and version control best practices
• Comfortable working independently with clear deliverables
⸻
Nice to Have:
• Familiarity with Docker or container-based environments
• Experience deploying PWAs to production
• Exposure to Firebase, AWS, or similar platforms
⸻
To Apply:
Submit a short proposal including your relevant experience, GitHub profile or code samples, estimated timeline, and hourly or project-based rate.
Related categories:
Business, Accounting, Human Resources & Legal
JavaScript
Mobile App Development
Android
React Native