Code review of the mobile application on React Native

Web Programming — incorrectly specified categories?

156 USD

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We have a mobile application on React Native that has been developed for quite a long time by one developer. We want to have an independent code review, particularly interested in the authorization block and working with tokens during interaction with the backend.

It is necessary to look at the application and provide a detailed response regarding the strengths, weaknesses of the code, and recommendations for improvement.

Proposals 15

Andrii Lyulchenko

7 1

Budget: 7000 UAH Deadline: 3 days

Hello. I am ready to discuss and implement the project. I have extensive work experience.

Roman Tokar

14 0

Budget: 7000 UAH Deadline: 1 day

Good day!
My name is Roman, from the Vilors team. We can conduct an independent code review of your React Native application with a focus on authentication and token handling.

As a result, you will receive a report with the strengths and weaknesses of the code and specific recommendations for improvements.
We can discuss the details of our collaboration in private messages.

Valentin Haritonov

32 0

Budget: 22900 UAH Deadline: 29 days

Good day!
My name is Valentyn, and I represent Arctic Web Agency. We are a team of experienced web developers specializing in creating modern and effective web solutions for businesses. I can provide examples of our similar work in personal messages. We are ready to take your project to work!

Sincerely,
Arctic Web Team
Freelancehunt

Yehor V.

5 0

Budget: 7500 UAH Deadline: 5 days

Hello. I am a Senior React/React Native engineer with over 7 years of commercial experience. I have worked in product teams and service studios on high-load applications, responsible for frontend architecture, secure authorization, and regular code reviews, mentoring the team and implementing security and quality practices.

I am ready to conduct an independent review focusing on authorization and token management. I will check the state and navigation architecture, the correctness of guards and access controls. I will analyze the full lifecycle of access and refresh tokens, storage in SecureStore Keychain Keystore, rotation, handling of 401 errors, session recovery, protection against replay attacks, and compliance with OAuth2 PKCE if needed. I will review the network layer, interceptors, retries with backoff, offline functionality, request queue, time-slicing, and TLS pinning. I will assess the protection of secrets and configs, handling of .env and builds, the possibility of biometrics for sensitive actions, anti-tamper, and root jailbreak detection. I will check the performance of Hermes Flipper memory and bundle size. I will look at test coverage and monitoring through Sentry with PII masking.

You will receive a structured report with an executive summary, risks with priorities, specific recommendations and code examples, as well as separate MRs with fixes for critical areas and a roadmap for improvements.

To get started, I only need read-only access to the repository, a brief build instruction, RN version and key dependencies, a description of the backend authorization flow, test keys or sandbox, and access to error logs or crash reports if available. Please let me know what authentication protocol is currently being used, whether there is a separate refresh endpoint, and how session auto-renewal is organized after the application restarts.