Senior Mobile Frontend Engineer – Bilingual RTL

99brightminds; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

99Bright Minds is seeking a highly skilled Senior Frontend Mobile Developer to ensure a seamless, high-performance mobile experience across bilingual platforms. You will build mobile-first interfaces, implement RTL Arabic and English LTR support, and optimize performance, security, and usability on iOS and Android.

Collaborating with design, QA, backend, and DevOps, you will deliver cross-platform features, reuse APIs, and document release steps for the client's team, while mentoring junior

Qualifications

• 5 years of frontend development with a strong focus on mobile.
• Strong JavaScript/TypeScript, HTML5 and CSS3, with deep responsive and mobile-web experience.
• Hands-On experience with a cross-platform framework (React Native or Flutter) and/or progressive web apps.
• Proven delivery of bilingual Arabic/English interfaces with RTL support.
• Experience consuming REST/GraphQL APIs and handling authentication.
• Experience testing on real devices and fixing cross-browser issues (Safari iOS, Chrome Android).
• At least one delivered project for a client in Saudi Arabia.
• Proficient in Arabic and English.

Responsibilities

• Build mobile-first, responsive interfaces for iOS and Android.
• Develop mobile frontend features that reuse the website’s APIs and content.
• Implement Arabic RTL and English LTR support on mobile, including gestures and forms.
• Optimize mobile performance, image delivery, caching, and offline behavior.
• Integrate with backend services, CMS and third-party systems through APIs.
• Apply mobile security practices: secure storage, token handling and data protection.
• Collaborate with UI/UX and QA for testing on devices.
• Document builds, configuration and release steps for the client’s team.

Skills

Mobile Development

JavaScript/TypeScript

React Native

RTL Arabic support

Tools

REST APIs

GraphQL

Job description

99Bright Minds is seeking a highly skilled Senior Frontend Mobile Developer to ensure a seamless, high-performance mobile experience across bilingual platforms. You will build mobile-first interfaces, implement RTL Arabic and English LTR support, and optimize performance, security, and usability on iOS and Android.

Collaborating with design, QA, backend, and DevOps, you will deliver cross-platform features, reuse APIs, and document release steps for the client's team, while mentoring junior