Learn more about our current job openings and benefits of working at FSL.
Detailed reviews and feedback from past and current clients.
Get to know the Management Team behind FullStack Labs.
Our step-by-step process for designing and developing new applications.
Writings from our team on technology, design, and business.
Get answers to the questions most frequently asked by new clients.
Learn about our company culture and defining principles.
A high level overview of FullStack Labs, who we are, and what we do.
A JavaScript framework that allows rapid development of native Android and IOS apps.
A JavaScript framework maintained by Facebook that's ideal for building complex, modern user interfaces within single page web apps.
A server side programming language known for its ease of use and speed of development.
A lightweight and efficient backend javascript framework for web apps.
An interpreted high-level programming language great for general purpose programming.
A JavaScript framework maintained by Google that addresses many of the challenges encountered when building single-page apps.
A JavaScript framework that allows developers to build large, complex, scalable single-page web applications.
A progressive JavaScript framework known for its approachability, versatility, and performance.
A progressive JavaScript framework known for its approachability, versatility, and performance.
A progressive JavaScript framework known for its approachability, versatility, and performance.
A progressive JavaScript framework known for its approachability, versatility, and performance.
A progressive JavaScript framework known for its approachability, versatility, and performance.
A progressive JavaScript framework known for its approachability, versatility, and performance.
A progressive JavaScript framework known for its approachability, versatility, and performance.
View a sampling of our work implemented using a variety of our favorite technologies.
View examples of the process we use to build custom software solutions for our clients.
View projects implemented using this javascript framework ideal for building complex, modern user interfaces within single page web apps.
View projects implemented using this framework that allows rapid development of native Android and IOS apps.
View projects implemented using this backend javascript framework for web apps.
View projects implemented using this high-level programming language great for general purpose programming.
View projects implemented using this server side programming language known for its ease of use and speed of development.
We have vast experience crafting healthcare software development solutions, including UI/UX Design, Application Development, Legacy Healthcare Systems, and Team Augmentation. Our development services help the healthcare industry by enhancing accessibility, productivity, portability, and scalability.
We offer a range of custom software development solutions for education companies of all sizes. We're experts in Education Software Development and specialists in enhancing the learning experience across web, mobile, and conversational UI.
We're experts in developing Custom Software Solutions for the Logistics Industry. Our work offered a whole new and more efficient way for Logistics companies to manage their crucial operations.
We partner with various construction industry organizations to build custom software development solutions. Our Construction Software Development Services allow construction companies to manage projects, resources, and documentation.
We have vast experience crafting healthcare software development solutions, including UI/UX Design, Application Development, Legacy Healthcare Systems, and Team Augmentation. Our development services help the healthcare industry by enhancing accessibility, productivity, portability, and scalability.
We offer a range of custom software development solutions for education companies of all sizes. We're experts in Education Software Development and specialists in enhancing the learning experience across web, mobile, and conversational UI.
We're experts in developing Custom Software Solutions for the Logistics Industry. Our work offered a whole new and more efficient way for Logistics companies to manage their crucial operations.
We partner with various construction industry organizations to build custom software development solutions. Our Construction Software Development Services allow construction companies to manage projects, resources, and documentation.
Learn more about our current job openings and benefits of working at FSL.
Detailed reviews and feedback from past and current clients.
Get to know the Management Team behind FullStack Labs.
Our step-by-step process for designing and developing new applications.
Writings from our team on technology, design, and business.
Get answers to the questions most frequently asked by new clients.
Learn about our company culture and defining principles.
A high level overview of FullStack Labs, who we are, and what we do.
A JavaScript framework that allows rapid development of native Android and IOS apps.
A JavaScript framework maintained by Facebook that's ideal for building complex, modern user interfaces within single page web apps.
A server side programming language known for its ease of use and speed of development.
A lightweight and efficient backend javascript framework for web apps.
An interpreted high-level programming language great for general purpose programming.
A JavaScript framework maintained by Google that addresses many of the challenges encountered when building single-page apps.
A JavaScript framework that allows developers to build large, complex, scalable single-page web applications.
A progressive JavaScript framework known for its approachability, versatility, and performance.
A dynamic programming language used in all sorts of web and mobile applications.
A cross-platform programming language designed to run robust applications on any device.
A UI toolkit used to build natively compiled applications from a single codebase.
A functional programming language that’s ideal for scalability, maintainability, and reliability.
A Customer Relationship Management (CRM) platform that seamlessly integrates with your business operations.
A high-performance programming language that makes it easy to build simple, reliable, and efficient software.
View a sampling of our work implemented using a variety of our favorite technologies.
View examples of the process we use to build custom software solutions for our clients.
View projects implemented using this javascript framework ideal for building complex, modern user interfaces within single page web apps.
View projects implemented using this framework that allows rapid development of native Android and IOS apps.
View projects implemented using this backend javascript framework for web apps.
View projects implemented using this high-level programming language great for general purpose programming.
View projects implemented using this server side programming language known for its ease of use and speed of development.
FullStack Labs is a leading team of React Native developers, engineers, programmers, coders, and architects. Uber, Siemens, and hundreds of other companies have chosen us for their mission critical software development projects.
We’ll review your code base and provide a report that includes quality scores for the following:
NFIB is the largest advocacy group in the United States for small businesses. They were in need of a new mobile application for their users, so they partnered with FullStack to design and build Engage. Engage allows their users (small business owners) to contact their elected representatives, receive action alerts about legislation affecting their businesses, register for events, stay informed on NFIB’s latest work, and share app content via email, text, and social media.
React allows us to build mobile apps with React Native. This means we can write one React app and deploy it to the web, iOS, and Android, reducing cost and saving time.
React is well funded and backed by both major corporations (Facebook) and a large open source community.
The component hierarchy, one way data flow, and heavy adoption of the newest ES spec make React developers happy while keeping the system simple enough to maintain complex applications.
We will work with you to understand your technical needs, team dynamics, and goals.
We’ll send you FullStack React Native developers that match your technical requirements, with links to their FullStack profile page which outlines their work experience and technical abilities, as well as their FullStack technical summary page, which includes a 60 minute video of the developer completing FullStack’s coding challenge, and a plethora of other technical information from their interview with us.
Start the engagement. Work with your new React Native developers for a trial period, ensuring they're the right fit.
We design and build greenfield apps of all shapes and sizes using React Native combined with a Python, Node, or Ruby on Rails backend.
Have a legacy React Native app? We’re here to help. From debugging and maintenance to feature development and DevOps, we'll tailor a development plan to meet your needs.
Need to add a React Native developer to your existing team? We'll seamlessly integrate as many React.js developers as needed, to help you go faster and level up your team's skills
We’d love to learn more about your project.
Engagements start at $75,000.
FullStack Labs is a leading team of React Native developers, engineers, programmers, coders, and architects. Uber, Siemens, and hundreds of other companies have chosen us for their mission-critical software development projects. React Native is a crucial tool to develop your project, here are a few React Native Interview Questions you can use to screen your React Native candidates:
Q: Give an outline of the React Native architecture.
Answer:
High overview:
Explanation:
In the Main thread React Native handles rendering React components to Native views. Hence the word native in React Native.
The business logic runs on the JS thread whenever you need to make a call to any native modules it requires a call over the bridge.
Q: Describe how the React Native bridge works?
Answer:
This bridge allows you to communicate with native modules that are exported via the @ReactMethod annotation on Android and RCT_EXPORT_METHOD() macro on iOS. This extends functionality for features that are better done in the native ecosystem.
Bonus or Other Valid Explanations:
In the JS thread javascript code then gets processed through the virtual machine.
Q: Write a simple animation to scale an element from 1 to 2 using the Animated API.
Answer:
Something along the lines of the following, but it should have Animated.Something and an Animated.View, and use the correct syntax for transform on the style prop.
-- CODE language-jsx keep-markup --
Animated.timing(this.state.scale {
toValue: 2,
duration: 2000
}).start();
{ scale: this.state.scale },
] }}>{ can be anything }
Q: Using ReactNative’s provided API, write an example of how you would store a key value pair on the device.
Answer:
Should look something like this:
-- CODE language-jsx keep-markup --
await AsyncStorage.setItem('@MySuperStore:key', 'I like to save it.');
Q: How do you handle Platform specific code in React Native?
Answer:
Example: modal.android.js and modal.ios.js
Q: What techniques or libraries would you use to implement a splash screen in React Native?
Answer:
Wrong answers are “I don’t or have ever used/implemented splash screens”, not having a splash screen is a bad user experience in most cases
Libraries:
Techniques:
Q: For apps that require an internet connection, what techniques or libraries would you use to handle when a user loses their connection?
Answer:
Libraries
Techniques
Q: What navigation library do you use and why?
Answer:
The answer to this question is opinion based, focus on the rationale behind why they use a specific library.
Q: How do you pass props between screens using the navigation library of your choice?
Answer:
Depends on the library, but some answers might be based around using redux instead
https://reactnavigation.org/docs/params/
For React Navigation, something like this
-- CODE language-jsx keep-markup --
navigation.navigate('Details', {
itemId: 86,
otherParam: 'anything you want here',
});
Q: Does a screen remain mounted when navigating to a different screen in React Navigation and similar libraries? What are the implications either way?
Answer:
For libraries like React Navigation, that model themselves on native navigation, screens remain mounted when navigating. This causes problems with relying on react lifecycle methods like componentWillMount and componentWIllUnMount
https://reactnavigation.org/docs/navigation-lifecycle/
Q: What techniques or libraries would you use to comprehensively test a React Native application for maximal coverage?
Answer:
Q: How do you handle phones with notches?
Answer:
Use SafeAreaView or a library helper like iphone-x-helper
Make sure components like snackbar positions take into account the notch
Q: What steps do you take when debugging an app that is crashing?
Answer:
Lots of possible answers:
Q: What module can you use to run tasks after all animations and interactions have finished?
Answer:
InteractionManager.runAfterInteractions
Q: What techniques or libraries do you use for responsiveness?
Answer:
Lots of possible answers:
Q: How do you make sure the keyboard does not cover form inputs?
Answer:
KeyboardAvoidingView or another library around keeping the input above the keyboard
Q: What is wrong with this component?
Answer:
-- CODE language-jsx keep-markup --
https://assets-global.website-files.com/5d9bc5d562ffc2869b470941/5e013c6d193e334919d6e371_logo-fsl-light-gradient.svg}} />
Images in React Native require a width and height
Q: What techniques might you use to improve the performance of a screen with a lot of elements?
Answer:
Lots of possible answers, but the main one is using Flatlist and lazily loading elements.