Senior React Native Mobile Developer

Job Title : Mobile Apps Developer React Native (2 openings) — Advanced to Fluent English required 100% Remote

Role Description We are seeking a highly experienced

Mobile Apps Developer

with

10+ years of professional experience , with

React Native as the core and mandatory technology . You will lead the development of scalable, high-performance mobile applications and collaborate closely with product managers, designers, and backend engineers to deliver seamless mobile experiences across iOS and Android platforms. Key Responsibilities Design and develop cross-platform mobile applications

using React Native (mandatory) . Optimize, maintain, and refactor React Native codebases for performance and scalability. Integrate

RESTful APIs ,

GraphQL ,

gRPC ,

Firebase , and third-party libraries / services. Develop offline-first capabilities and ensure efficient local data persistence. Apply coding best practices, enforce code quality and testing strategies. Collaborate closely with UI / UX teams to convert design prototypes into polished, responsive interfaces. Stay up to date with evolving React Native ecosystem trends, libraries, and tooling. Required Technical Skills (Mandatory) Fluency in English

(spoken and written) for communication with international teams. 10+ years of professional experience

in

mobile application development . 10+ years of hands-on experience developing mobile applications with React Native . Strong understanding of React Native architecture, state management (Redux, Context, Recoil, etc.), navigation, and modular component patterns. Deep knowledge of app

performance optimization ,

memory management , and

debugging techniques

for mobile apps. Experience with

Firebase

(analytics, crash reporting, app distribution). Solid knowledge of

App Store

and

Play Store

publishing workflows. Experience with

CI / CD pipelines

for mobile applications. Strong proficiency with

Git

and collaborative development workflows. Solid understanding of

mobile security practices , including encryption and secure data storage. Desired / Nice-to-Have (Not Mandatory) Experience with

Flutter

development. Experience with

native iOS development (Swift / Objective-C) . Experience with

native Android development (Kotlin / Java) . Prior experience implementing

native modules

for React Native. Qualifications Bachelor’s degree in Computer Science, Engineering, or equivalent experience. Strong analytical thinking, ownership, and problem-solving abilities. Excellent communication skills and proven collaboration across cross-functional teams. Ability to work independently or in distributed / remote environments.

Job Title : Senior React JS Web Developer — Advanced to Fluent English Required Role Description 100% Remote We are seeking a highly experienced

Senior React JS Web Developer

with

10+ years of professional experience

in modern web development. You will be responsible for designing, building, optimizing, and maintaining scalable and high-performance web applications. This role involves close collaboration with product managers, designers, and backend engineers to deliver seamless, intuitive, and visually engaging user experiences. Key Responsibilities Design, develop, and maintain

web applications

using

React.js . Optimize codebases for performance, scalability, and maintainability. Integrate

RESTful APIs ,

gRPC ,

GraphQL ,

Firebase , and third-party services. Implement solutions for efficient state management (Redux, Context API, etc.). Collaborate closely with UI / UX teams to convert design mockups into clean, responsive, accessible interfaces. Apply best practices in testing, code review, and performance optimization. Stay up to date with the latest patterns and evolutions in the React and frontend ecosystem. Required Technical Skills Fluency in English

(spoken and written) for collaboration with international teams. 10+ years of professional experience

in

web application development . 10+ years of hands-on experience

with

React.js . Strong mastery of React architecture, Hooks, Context API, and reusable component patterns. Deep knowledge of

frontend performance optimization ,

debugging , and

memory management . Strong understanding of

JavaScript (ES6+) ,

TypeScript ,

HTML5 ,

CSS3 , and responsive design. Experience with

CI / CD pipelines , version control workflows (Git), pull requests, branching strategies, etc. Solid understanding of

web security practices

(encryption, secure storage, auth flows, etc.). Differential (Not Mandatory) Experience with

React Native

and / or mobile development (Android / iOS). Familiarity with

native mobile development

(Kotlin / Java or Swift / Objective-C). Experience with App Store / Play Store publishing pipelines (for hybrid app delivery). Firebase for analytics and crash monitoring. Qualifications Bachelor’s degree in computer science, engineering, or equivalent experience. Strong analytical and problem-solving skills. Excellent communication and collaboration abilities. Ability to work both independently and in distributed teams. ✨ If you are passionate about building elegant and high-impact web experiences, join us at Kaspper and help shape the future!