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Senior React Engineer

Engineering | Framingham, MA | Full Time

Job Description

Recently honored by the Boston Business Journal as one of the 10 fastest-growing private companies in Massachusetts and named THE BEST large company to work for on their Best Places to Work list, Definitive Healthcare is on an incredibly exciting trajectory. The company has more than doubled in size in the past 2 years and has close to 600 employees. Our motivated and high-energy workforce is collaborative, kind, and engaged, which has led to exceptional retention rates.

Our expansion has created the need for an energetic and motivated Senior React Engineer to join our team. If you would like to work at a fast-paced company that is experiencing high growth, keep reading!

Your challenge: 

We are looking for great Javascript engineers who have a specialty in React.js.  Your primary focus will be developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux).  You will ensure that these components and the overall application are robust, and easy to maintain and implement. You will coordinate with the rest of the team working on different layers of the platform.

The Senior React Engineer at Definitive Healthcare:

  • Has more than 6 years of experience in a fast-paced Agile software development environment
  • Ensures software is built, according to business and technical specifications, on top of an error-free and high-performing platform
  • Contributes significantly to architectural decisions
  • Seeks ownership of platform components and projects
  • Performs code reviews
  • Mentors more junior members of the team
  • Participates in Agile ceremonies
  • Is always thinking of better ways to do something
  • Isn’t afraid to fail
  • Cares deeply about quality


  • Developing new user-facing features using React.js
  • Building reusable components and front-end libraries for future use
  • Translating designs and wireframes into high quality code
  • Optimizing components for maximum performance across a vast array of web-capable devices and browsers
  • Work with product team and graphic designers
  • Learn and understand user interactions

Skills required:

  • Strong proficiency in TypeScript, JSX, JavaScript, including DOM manipulation and the JavaScript object model
  • 2+ years of experience with popular React.js workflows (such as Flux or Redux)
  • Expert-level core web fundamentals: HTML, JavaScript, and CSS
  • CSS preprocessors like Sass or LESS
  • JS-based build tools like Grunt, Webpack and Gulp, package management (NPM, lerna, yarn & yarn workspaces)
  • Deep understanding of Azure DevOps Pipelines and Artifact Feeds
  • Thorough understanding of React.js and its core principles
  • Knowledge of isomorphic React is a plus
  • Experience with storybook
  • Familiarity with RESTful APIs and HTTP interactions
  • Knowledge of modern authorization mechanisms, such as JWT
  • Unit testing tools such as jest, chai, mocha, and experience with end-to-end testing
  • Solid understanding of software version management (Git)

Why we love Definitive, and why you will too!

  • Industry leading products
  • Work hard, and have fun doing it
  • Incredibly fast growth means limitless opportunity
  • Flexible and dynamic culture
  • Work alongside some of the most talented and dedicated teammates
  • Definitive Cares, our community service group, gives all of us a chance to give back
  • Competitive benefits package including great healthcare benefits and a 401(k) match

What our Employees are saying about us on Glassdoor: 

 “Great Work atmosphere, great work life balance, excellent company to work for, amazing top notch product, incredible customer service, lots of tools to help you succeed.”

-Business Development Manager


“Great team. Amazing growth. Employees are treated very well.”

-Research Analyst


“I have waited 36 years to work at a dream job for a dream company and I am so happy to have finally got there.”

-Profile Analyst


If you don’t fit all of these qualifications, but believe you’re still a great fit, feel free to apply and tell us why in your cover letter.

Definitive Hiring Philosophy

Definitive Healthcare is an equal opportunity employer that celebrates diversity and is committed to creating an inclusive workplace with equal opportunity for all applicants and teammates. Our goal is to recruit the most talented people from a diverse candidate pool regardless of race, color, religion, age, gender, gender identity, sexual orientation or any other status. If you’re interested in working in a fast growing, exciting working environment – we encourage you to apply!