React Native Developer

Remote opening

min 3.5 years

What you’ll do:

You will be working as a senior software engineer within the healthcare domain, where you will focus on module level integration and collaboration across other areas of projects, helping healthcare organizations achieve their business goals with use of full stack technologies, cloud services & DevOps. You will be working with Architects from other specialties such as cloud engineering, data engineering, ML engineering to create platforms, solutions and applications that cater to latest trends in the healthcare industry such as digital diagnosis, software as a medical product, AI marketplace, amongst others. Focuses on module level integration and collaboration across other areas of projects

Role & Responsibilities:

We are looking for a Full Stack Developer who is motivated to combine the art of design with programming.Responsibilities will include translation of the UI/UX design wireframes to actual code that will produce visual elements of the application. You will work with the UI/UX designer and bridge the gap between graphical design and technical implementation, taking an active role on both sides and defining how the application looks as well as how it works.

• Develop new user-facing features

• Build reusable code and libraries for future use

• Ensure the technical feasibility of UI/UX designs

• Optimize application for maximum speed and scalability

• Assure that all user input is validated before submitting to back-end

• Collaborate with other team members and stakeholders

• Would be responsible to provide stable technical solutions which are robust and scalable as pe business needs

Skills expectation:

• Must have

o Frontend:

 Proficient understanding of web markup, including HTML5, CSS3

 Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS

 Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery

 Good understanding of at least one of the advanced JavaScript libraries and frameworks such as AngularJS, KnockoutJS, BackboneJS, ReactJS etc.

 Familiarity with one or more modern front-end frameworks such as Angular 15+, React, VueJS, Backbone.

 Good understanding of asynchronous request handling, partial page updates, and AJAX.

 Proficient understanding of cross-browser compatibility issues and ways to work

around them.

 Experience with generic Angular testing frameworks

About the Role

We are looking for a highly skilled and experienced Senior React Native Developer to join our team and take the lead on developing our cross-platform mobile application. You’ll play a critical role in building, launching, and scaling a high-performance mobile app that runs seamlessly on both iOS and Android platforms from a single codebase.

If you’re passionate about mobile technologies, have a strong command of React Native, and are excited about creating a high-quality product from the ground up, we’d love to hear from you.

Responsibilities

• Lead the end-to-end development of a cross-platform mobile application using React Native.
• Collaborate with product managers, designers, and backend engineers to deliver high-quality user experiences.
• Build reusable components and front-end libraries for future use.
• Optimize app performance for speed and scalability across devices and OS versions.
• Ensure the app complies with design standards and platform-specific guidelines (Apple App Store & Google Play).
• Set up CI/CD pipelines for automated builds, testing, and deployment (e.g., using Fastlane, EAS, or similar).
• Integrate RESTful APIs and third-party services.
• Handle app store submissions and updates.
• Mentor junior developers and enforce best practices in mobile development.

Requirements

Must-Have:

• 5+ years of experience in mobile application development.
• 3+ years of hands-on experience with React Native.
• Strong understanding of JavaScript (ES6+), TypeScript, and React architecture.
• Deep knowledge of iOS and Android mobile app development lifecycle.
• Experience with mobile UI/UX best practices and performance optimization.
• Familiarity with native build tools (Xcode, Android Studio).
• Experience integrating REST APIs and handling network latency issues.
• Proficient with Git, GitHub/GitLab, and agile development practices.
• Experience with push notifications, in-app purchases, deep linking, and analytics SDKs.

Preferred:

• Experience with Expo or EAS for managed workflows.
• Familiarity with mobile CI/CD pipelines (Fastlane, Bitrise, etc.).
• Experience with native modules (Objective-C/Swift and Java/Kotlin) as needed.
• Knowledge of automated testing frameworks (Jest, Detox).
• Published apps in both the App Store and Google Play.
• Prior experience in startups or high-growth environments.

What We Offer

• Opportunity to lead and build a product from the ground up.
• Work with a dynamic and talented team in a fast-paced environment.
• Flexible working hours and remote-first culture.
• Competitive salary and equity options (if applicable).
• Learning and development budget.

• Meeting with the development team to discuss user interface ideas and applications.
• Reviewing application requirements and interface designs.
• Identifying web-based user interactions.
• Developing and implementing highly responsive user interface components using react concepts.
• Writing application interface codes using JavaScript following react.js workflows.
• Troubleshooting interface software and debugging application codes.
• Developing and implementing front-end architecture to support user interface concepts.
• Monitoring and improving front-end performance.
• Documenting application changes and developing updates.

We are looking for a React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

Responsibilities
Build pixel-perfect, buttery smooth UIs across both mobile platforms.
Leverage native APIs for deep integrations with both platforms.
Diagnose and fix bugs and performance bottlenecks for performance that feels native.
Reach out to the open-source community to encourage and help implement mission-critical software fixes—React Native moves fast and often breaks things.
Maintain code and write automated tests to ensure the product is of the highest quality.
Transition existing React web apps to React Native.

Skills
Firm grasp of the JavaScript, TypeScript, ClojureScript language and its nuances, including ES6+ syntax Knowledge of functional or object-oriented programming
Ability to write well-documented, clean Javascript code
Rock-solid at working with third-party dependencies and debugging dependency conflicts
Familiarity with native build tools, like XCode, Gradle Android Studio, IntelliJ
Understanding of REST APIs, the document request model, and offline storage
Experience with automated testing suites, like Jest or Mocha

Brief Overview:

Through your work at Vauld, you will have the opportunity to change money for the 21st century. We’re a leading cryptocurrency platform and are passionate about increasing economic freedom around the world.

We are looking for a Lead frontend engineer who has hands-on experience with Angular/React in the front end responsibilities. You'll be involved with bringing features from idea to completion and mentoring an incredibly talented group of peers.

If you are looking for a challenging work environment where you can grow and deepen your technical skills as a frontend engineer and architect, we’d love to chat with you!

Key Responsibilities:

• Working with designers, product managers to collaboratively own the front-end layer for Vauld’s web and mobile applications.
• Architect, develop, maintain, and improve our front-end libraries.

Requirements:

• You have 5 years or more of front end development experience with expertise in designing and implementing high-performance web applications.
• You are aware of Javascript design patterns and can architect a fairly complex UI without feeling the need for a framework.
• You are capable of writing high-quality code that conforms to the standards and best practices in a particular language/framework.
• You have experience building a product using a mainstream library or framework.
• Experience in any of React/AngularJs/Vue js
• You have a deep understanding of javascript coding methodologies and can rightly judge/implement solutions to complex problems.
• You love to own end to end responsibility, starting from defining the problem statement (either yourself or alongside your peers), development (PoC if needed), testing, releasing in staging & then production environment, and finally monitoring.

Preferred:

• Previous work experience in product-based (B2B/B2C) startups and fintech firms.
• Experience working with Visualisation/graphs/gaming
• Experience building for mobile platforms
• Understands the cryptocurrency landscape

Working at Vauld:

You will join a fun and intellectually stimulating work environment. If you’re excited by the idea of making a real impact and joining a team where we pride ourselves on being disruptive and ambitious, a career with Vauld is perfect for you.

About our organization background: http://sportsit.net/" target="_blank">http://sportsit.net/ 

SportsIT A London headquartered global technology firm specializing in working with technology firms and IT organizations in the emerging technologies such as Web 2.0, SaaS, Cloud, Open-source, BI/DW, Mobility, Automation, DevOps and Big Data. 

We work only on the Sports, Games, Betting and Gambling industry.   

Job Description: React.JS Developer role

Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.

Thorough understanding of React.js and its core principles.

Experience with popular React.js workflows (such as Flux or Redux)

Familiarity with newer specifications of ECMAScript.

Experience with data structure libraries (e.g., Immutable.js)

Knowledge of isomorphic React is a plus.

Familiarity with RESTful APIs.

Knowledge of modern authorization mechanisms, such as JSON Web Token.

Familiarity with modern front-end build pipelines and tools.

Experience with common front-end development tools such as Babel, Webpack, NPM, etc.

Ability to understand business requirements and translate them into technical requirements.

A knack for benchmarking and optimization.

Familiarity with code versioning tools.