Senior Full Stack Developer, React, Node.js, JS, CSS

Instrumental Group

Senior Full Stack Developer building web applications and HubSpot solutions at a digital agency. Collaborating with cross-functional teams to deliver high-quality digital experiences.

Posted 6/5/2026full-timeRemote • Colorado • 🇺🇸 United StatesSenior💰 $69,000 - $75,000 per yearWebsite

Tech Stack

Tools & technologies

ElixirFirebaseGoGraphQLJavaScriptMongoDBMySQLNode.jsPHPPostgresPythonReactReduxSCSSWordPress

About the role

Key responsibilities & impact

Build and maintain applications using React and Node.js
Develop HubSpot CRM UI Extensions and interactive front-end components
Create serverless functions and custom-coded workflow actions using Node.js
Develop and maintain HubSpot CMS themes, templates, and modules (training provided if needed)
Ensure high-quality, performant, and accessible web experiences
Work within project management tools (ClickUp, Jira, Asana, or Teamwork), Slack, and GitHub
Collaborate with designers and strategists to translate requirements into technical solutions
Stay current with modern web technologies and best practices

Requirements

What you’ll need

5+ years of professional full-stack JavaScript development experience
Strong proficiency in React.js and state management (Redux, Zustand, Context API, etc.)
Solid experience with Node.js (Express, serverless functions, API development)
Strong understanding of modern CSS (SCSS, Tailwind, CSS-in-JS, Grid, Flex, etc.)
Experience working with APIs and data fetching (Axios or similar)
Strong Git workflow experience (branches, pull requests, code reviews)
Willingness to learn HubSpot CMS and CRM development

Benefits

Comp & perks

Comprehensive medical, dental, and vision insurance
Short-term and long-term disability coverage
Accident insurance for additional peace of mind
401(k) retirement plan
15 paid holidays plus generous PTO
Quarterly incentive plan
Collaborative, high-performance team culture
Award-winning workplace recognized by Inc. and Great Place to Work

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

ReactNode.jsJavaScriptReduxZustandContext APICSSSCSSTailwindAPI development

Soft Skills

collaborationcommunicationproblem-solvingadaptability