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Hire Only Senior
React Developers

Trio focuses on finding only Senior React Developers to deliver impact within your team. All of our developers are proven domain experts in their field. Companies choose Trio to scale their teams faster with best-in-class talent.

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Senior React Developer

10 Years of Experience

Trusted by leading brands and startups

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Hire Senior React Developers and Engineers

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    Senior React Developer

    10+ Years of Experience

    Carlos is a Software Engineer with a decade of experience in developing mobile and web applications for various companies situated in Germany, the USA, Israel, and Chile. He has worked across diverse domains, including healthcare, home automation, transport, HR, education, and Augmented Reality, seeking out innovative work settings that allow him to work with cutting-edge technologies, enhance business outcomes, and improve user experience.

    • React Native

    • Next.js

    • React

    • OpenAI

    Hire Carlos

    When I connected with Trio, I had an MVP, and Trio helped me turn my idea into reality. I needed engineering support to come in and give the vision of where the product could go, how it could be scalable, and accessible for hundreds of thousands of users worldwide.

    Cal Brunell

    Co-Founder at Everyday Speech

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    Senior React Developer

    8 Years of Experience

    Sérgio has been a software developer for the past 7 years, specializing in building web applications using Javascript and React. In addition, he possesses experience in developing APIs and mobile apps. His professional experience encompasses working with startups, agencies, and as a consultant. Sérgio is a team player and an effective communicator. He is self-taught, driven by challenges, and always keen to expand his knowledge.

    • React

    • Javascript

    • Node.js

    • HTML

    • CSS

    Hire Sérgio

    Trio's engineers helped us prioritize development so that we could get our platform out to our consumers as fast as possible. I'd describe a Trioneer as creative, committed, and enthusiastic, and I loved working with them because they felt like a member of our team.

    Brianna Socci

    Co-Founder & CPO at UBERDOC

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    Senior React Developer

    5 Years of Experience

    Paulo is an experienced full-stack software engineer. He possesses expertise in developing applications using JavaScript and TypeScript and utilizing popular frameworks such as Node.js, Vue.js, React.js, and Next.js. Paulo is passionate about creating maintainable code that can be easily comprehended and modified by fellow developers, while also prioritizing efficient and scalable architecture.

    • Typescript

    • Node.js

    • Vue.js

    • React.js

    • Next.js

    • HTML

    • CSS

    Hire Paulo

    Their ability to quickly provide us with resumes of great engineers with the specific skills we needed made them an obvious choice for us. Even when we didn't need full additional engineers, Trio was more than willing to let us test out as we scale up over time.

    Craig Zevin


  • Photo of Lucas


    Senior React Developer

    5 Years of Experience

    Lucas is a highly skilled and versatile creative professional with a broad range of expertise developing web, mobile, and backend applications. He’s successfully completed projects of varying scales and catered to diverse clients, including the creation of crypto wallet solutions and military athlete program applications. Known for his efficiency and reliability, Lucas is the go-to professional for achieving exceptional outcomes and consistent results.

    • Typescript

    • Node.js

    • React.js

    • Next.js

    • React Native

    Hire Lucas

    Hiring takes a lot of time and effort, and to be able to have a partner like Trio has been super valuable for Visual Boston. Knowing their quality and how their vetting process is like, as opposed to shopping around not sure of what you are going to get, made Trio our best option.

    Mark Stenquist

    Co-Founder & Engineer Specialist at Visual Boston

  • Dhyego's picture


    Senior React Developer

    12 Years of Experience

    Dhyego is a senior software developer with 12 years of experience in a wide range of projects and complexities. He specializes in software architecture, web development, and technical leadership, and is passionate about innovative solutions that drive business success. With his diverse experience and strong technical skills, he is a reliable and highly competent professional.

    • Senior

    • Software Architecture

    • Full Stack

    • Clear Communication

    • Tech Lead

    • Problem Solving

    • Innovation

    • Complexity

    • Scalability

    • Business Continuity

    Hire Dhyego

    Trio allowed us to find the proper talent needed for our clients' projects without having the burden of trying to interview them and have them on payroll full time internally.

    Alec Harrison

    Co-Founder & Design Specialist at Visual Boston

  • Tuily's picture


    Senior React Developer

    8 Years of Experience

    Tuily is an experienced front-end developer proficient in creating captivating websites and web applications, leveraging a robust expertise in constructing dynamic user interfaces. Beyond programming, he adeptly channels his artistic creativity towards the meticulous craft of 2D and 3D art.

    • React.js

    • Next.js

    • Javascript

    • CSS

    Hire Tuily

    Trio just makes it easy to allocate engineers. They give you very transparent prices upfront for the skill set that you need, so scaling up our project is as easy as reaching out and saying, 'That's what we need!'

    Mark Kimmerman

    Partner and Product Manager at Cosmos

  • Jhonatan's picture


    Senior React Developer

    9 Years of Experience

    Jhonatan is a passionate software engineer with extensive experience in React and React Native, specifically building various front-ends across fintech and health tech. He also has back-end experience and is comfortable with dealing with systems integrations. He enjoys grappling with technical challenges and implementing solutions that positively impact end-users.

    • React.js

    • Javascript

    • React Native

    • Node.js

    • Typescript

    Hire Jhonatan

    The thing that impressed me the most was that Trio was able to very quickly find us qualified candidates. We spent 6 months, and we couldn't hire an iOS or Android engineer, but Trio gave us one of each in 3 weeks.

    Shaun Scovil

    General Manager at Poloniex

  • Start Hiring
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    Senior React Developer

    10 Years of Experience

    Gabriel is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering

    • Javascript

    • Vue.js

    • Node.js

    • NGX

    • HTML

    Hire Gabriel

    The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

    Brandon Chinn

    Sr. Director of Product Engineering @ Tally

Frequently Asked Questions

  • Trio's senior react developers are the highest caliber talent you will find in Latin America. They are experienced professionals who can understand your business goals and product needs and offer long-term stability to your project.

    Trio provides senior React developers with the resources and training they need to continuously improve their skills over time and manage their long-term career growth.

  • The short answer is yes. However, realistically you will need to plan to onboard engineers effectively so we highly recommend that engineers start the week after accepting a Trio engineer in order to start fresh at the top of the week.

    Our experts will support you through the entire process and learn your onboarding processes to better assist you and save time.

  • Trio's process is rooted in years of experience scaling and managing high-performance engineering teams. Understanding your requirements is key for us to be able to provide the right senior React developer for your team based on your current team structure and processes.

    Our interview process ensures that we identify signals that align with your individual requirements and present experienced candidates with an extreme level of detail and transparency.

  • Working with Trio, communication is the most important value when working with our partners to make sure they are getting the value they are looking for.

    You'll have access to the best senior React developers in Latin America along with some of the brightest and most passionate engineering managers to guarantee that every developer allocated to your team is happy, healthy, and exceeding your expectations.

  • Every senior React developer is paired with an engineering manager at no cost to you who is responsible for ensuring that their needs as well as yours are met within the context of week-to-week engineering initiatives.

    These managers are not meant to replace your project or engineering managers but instead support them so they can focus on what matters most for your team, delivering new features on time.

  • You should look for senior React developers who have an advanced understanding of the React library, its ecosystem, and its best practices.

    A senior React developer should possess a solid understanding of core concepts such as state management, component lifecycle, and the virtual DOM. They should also have experience with popular libraries and frameworks e.g Redux/Zustand, GraphQL, and Next.js.

    Also, and be able to write clean, modular, and reusable components. Excellent problem-solving skills are a must along with strong attention to detail when working with designs.

  • React is used to build front-end user interfaces for single-page web applications and mobile apps.

    It's the framework of choice for developers in the front-end community.

  • React is the framework of choice for many front-end developers. Aside from it being easy to learn, it provides a lot of flexibility for structuring web applications along with plenty of third-party libraries to optimize performance, manage state and more.

    React's popularity has allowed it to grow and create an amazing community of developers making it easy to find and hire React developers of any seniority.

    Most front-end challenges have been encountered and solved using React so finding solutions to problems is not at all difficult.

How to Find and Hire the Best Senior ReactJS Developers for Your Team

ReactJS, is the hottest front-end library right now, with over ten-thousand companies using it. Whether you are building an MVP for a new product, updating a legacy codebase, or scaling your current front-end team, hiring a great senior ReactJS developer is not as easy as it may seem.

If you're looking to hire senior ReactJS developers, this guide is going to give you what you need to know about hiring the right way.

ReactJS quick facts

  • Component-based architecture: React uses classes that encapsulate individual pieces of a user interface into larger systems.

  • JSX: React is able to create dynamic HTML elements that handle logic and state within the user interface.

  • Fast and efficient: React uses a virtual DOM to reduce the number of changes to the actual DOM.

  • Stable: React is backward compatible, so developers don't need to go through their codebase every time React releases a new version.

Why ReactJS is so popular

React's easy learning curve allowed it to be embraced quickly by the open-source community beyond Facebook, where it was originally invented and introduced.

  • Easy to use: React's component-based architecture allows developers to abstract and build complex user interfaces in an intuitive way.

  • Large community and ecosystem: With such a rich ecosystem of third-party libraries, tools, and resources, it's easy for developers to get started with React. Finding solutions to problems is much easier due to the size and engagement of the community.

  • Backed by Facebook: React.js was developed inside of Facebook, which had a huge part to play in its initial rise to popularity. Large companies also use React which signals to the developer community that it's worth their time and energy to work with and use in production environments.

Roles and responsibilities of a senior ReactJS developer

Senior ReactJS developers are front-end JavaScript developers responsible for creating and maintaining UIs for web apps and websites. Front-end development describes software development that affects what the user sees and interacts with.

On the more technical side, senior ReactJS developers have the knowledge and expertise to handle complex front-end challenges and come up with production-grade solutions.

When it comes to soft skills, senior ReactJs developers should be ready to mentor their mid-level teammates while balancing their day-to-day work. They are expected to be strong communicators as well as thoughtful and consistent collaborators.

The first step in how to hire a senior ReactJS developer is making sure your potential hires have a proficient grasp of React's deeper technical gotchas and what's required of them for front-end development in general.

The day-to-day activities of a senior ReactJS developer can be quite diverse. Here's a snippet of what you might expect.

  • Developing responsive interactive technology for dynamic web pages such as menu buttons, online forms, gesture-driven actions, etc.

  • Testing and debugging interface software before the application goes live.

  • Working with the client to better understand how to manifest their vision for the app via software development.

    Consulting with back-end engineers and developers to ensure that collaborative user-facing and server-side interactions run without error

The State of JavaScript Survey shows that React places highly for both usage and satisfaction.

Skills to look for in a senior ReactJS developer

To hire the best senior ReactJS developers, you'll need to evaluate them for various front-end-specific skills.

Attention to detail

There's nothing more frustrating than a front-end developer who can't translate a design into a pixel-perfect user interface. No matter how well the front end is built, if it just doesn't look good, you can guarantee that you will drive away users.

You'll want to look for developers who take pride in building interfaces that honor the craft and detail designers put into the UI. Components are designed at the proper ratios and micro-interactions are discussed and developed with care.

State management using Redux and Hooks

Developers must know how to build dynamic user interfaces that respond to interaction and facilitate proper data flow between components. This is done primarily through the use of Hooks and Redux. Regardless of the approach, it's crucial to understand state management in order to build scalable React JS applications.

Familiarity with Node.js

Knowledge of Node.js is not required for senior ReactJS developers however it's good to have some familiarity with Node.js to improve load times through server-side rendering and build more robust React.js applications.

Proficiency in ES6

While senior ReactJS developers should already know JavaScript and even TypeScript, they most certainly should be comfortable with ES6, specifically using high-order functions and making use of destructuring to write cleaner and clearer code.

How much does it cost to hire a senior ReactJS developer

In the United States, the average salary for a React developer across all industries is around $108,175 or $52 an hour. This data was collected from ZipRecruiter which compiles information from employer job postings and other third-party sources.

Senior React developers in the United States can make upwards of $163,000 a year and beyond if they are working in big tech or Silicon Valley. This is due to the costs of living and resources that these companies have.

Many tech companies look to nearshore and offshore countries to find React developers at a lower rate. Outsourcing can be a convenient way for small and medium-sized companies (SMBs) to meet their needs while reducing operating expenditures.

Senior developers who are based in Latin America, for instance, make about $100,000. While this is a great value considering the cost of living in South America, this is relatively inexpensive compared to developer rates in the United States. Again, the cost of living and market economics play a big role here.

Writing the best job description to hire senior ReactJS developers

The best job descriptions are straightforward with relevant details that allow candidates to validate themselves against what you're looking for. You can use the following guidelines when building your own job description to hire senior ReactJS developers.

  • Must-haves and nice-to-haves: Be specific about the technologies and technical skills you're looking for and what types of skills or experience you believe are nice to have for candidates to land on the shortlist.

  • Responsibilities: Every company has a different definition of senior or mid-level and the responsibilities that come with it based on their company size and complexity. Be clear about what their individual responsibilities will be in their day-to-day work.

  • What to expect in X-months: Be upfront about what you'll expect from newly hired developers in 1 month, 3 months, and 6 months. Make sure that it's reasonable.

  • Interview process: If you have an interview process, be transparent about it so that you can reduce candidate attrition.

  • Strong communication: Underrated but never understated, communication makes or breaks most developers' relationships with the teams that they work with. Better to make it explicit to candidates that communication means everything to your team and without it, they will not last long.

Interview questions to hire senior ReactJS developers

With a quality job description, you'll be spending a lot of time screening and interviewing candidates. This is the most time-intensive part of the hiring process and also the most crucial.

Everyone has their own approach to interviewing candidates, and we have ours as well. Over time, the conventions have changed based on feedback from the engineering community and also the experiences gained interviewing over 30,000 developers.

Technical interview modalities change depending on the company. Teams with high standards strongly emphasize data structure, algorithms, and systems design/knowledge questions. Others might focus more on practical knowledge with specific technologies and frameworks.

When it comes to soft skills or cultural fit, the questions that companies will ask will also vary greatly. Some will take an analytical/technical approach, while others will ask questions that are intuitive for them.

There's no right or wrong, only strong or weak signals.

In this section, we'll focus specifically on technical questions geared towards senior ReactJS developers, for a more comprehensive deep-dive on soft-skills interviews check out the guide here.

Keep in mind that a candidate's ability to answer questions does not deliver strong signals about their overall ability to perform well on your team. It simply shows you that they might be able to code their way out of a paper bag with the technology you testing for.

Advanced react.js concepts

Is there a way to cancel an API request inside a useEffect?

Yes, there is a way to do this by using AbortController:

  useEffect(() => {
    const controller = new AbortController();
    const signal = controller.signal;
    fetch('your-api-url', { signal })
      .then(res => res.json())
      .then(res => setData(res))
      .catch(error => {
        if ( !== 'AbortError') {

    return () => controller.abort();
  }, []);

The following code doesn't preserve the component state when isFavorite changes, how can you prevent/fix this?

  import { useState } from 'react';

  export default function App() {
    const [isFavorite, setIsFavorite] = useState(false);
    if (isFavorite) {
      return (
          <Component isFavorite={true} />

    return (
        <Component isFavorite={false} />

  function Component({ isFavorite }) {
    const [number, setNumber] = useState(0);

    let className = 'number';
    if (isFavorite) {
      className += ' isFavorite';
    return (
      <div className={className}>
        <button onClick={() => setNumber(number + 1)}>

When a component is rendered, the state is preserved as long as it's still in the UI tree. Issues can occur if the component is unmounted and then remounted somewhere else in the tree, and the state will be lost.

To prevent this, render the component within the same parent div to ensure that the state is preserved even if moved around in the UI tree. This way, the component can be safely unmounted and remounted without losing its state.

export default function App() {
  const [isFavorite, setIsFavorite] = useState(false);
  return (
      <Component isFavorite={isFavorite} />

For more interview questions for senior ReactJS developers, check out our Interview Questions page.

Why use ReactJS in your application

The user interface is the center point of an end user's experience with an app.

Whether it's a web or mobile application, which visual library you use to power it is important. It's been an age-old debate for years, React vs. Angular vs. Vue, with companies using one or the other.

According to the numbers, the battle for superiority has already been won by React. Let's figure out why by breaking down a few of the advantages of React.js so you can determine whether or not you want to implement it as your new front-end technology.

ReactJS is a visual library for JavaScript created by Facebook to power UI's that are reactive and reflective of each user's individual experience within an app.

Designed to accommodate apps that are highly personalized experiences, it makes complete sense that a company like Facebook which owns some of the largest personalized social networks and communication tools would create something like React.

By dynamically changing the app's UI based on the data that a user inputs, React JS stands out as the ideal choice as a visual library for your project if it has functions and features such as user profiles, curated content, or customizable interfaces.

The way React prioritizes dynamic experiences makes it stand out as an ideal choice if User-Experience (UX) is something you are trying to prioritize with your app.

UX is increasingly becoming one of those things that make or break your app in an industry as competitive as tech, so considering it heavily during your development is vital.

ReactJS has been noted for being a lot more user-friendly from a development angle. It utilizes a Virtual DOM as opposed to a Real DOM, making updating apps and testing performance a lot more approachable for developers.

By making it easy to reuse code in different parts of your development environment, user interfaces can be designed and programmed in a way that favors quick-development, saving lots of time for other aspects of development.

The way React.js is designed allows it to be much more stable than other visual libraries, removing many of the headaches from front-end development.

The ability to quickly deploy dynamic user interfaces in a way that considers both the end-user and developers makes React.js a well-rounded choice for powering your front-end development.

Hire senior ReactJS Developers - Final Thoughts

Hiring senior ReactJS developers isn't easy and will take a considerable amount of your time. Time is not a luxury and as an engineering leader, you will most likely need to balance your work week between optimizing processes and hiring. That type of context switching is not recommended when better alternatives exist to find talent.

More importantly, making the wrong hire is expensive both in time and cost.

To offload the hiring process, rapidly speed up your time-to-hire, and mitigate risk, reach out to us at Trio . Our 3-step interview process was designed specifically to capture senior-level technical and soft-skill signals and hire the right senior ReactJS developers for your team.

With Trio, you can focus on what you love most - deliver great products while we handpick and shortlist from our pre-vetted talent network. We'll enable payroll, benefits, taxes, and local compliance and support you with onboarding and long-term talent management.

Happy hiring! :)

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