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Front End Developer

Mondo · Denver, CO · Remote

100100

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Front End Developer, Remote. Start date is ASAP for this 6 month contract position.

Job Title

Front End Developer

Location-Type

Remote

Start Date

ASAP

Duration

Contract, 6 months

Compensation Range

$45-49/hr on W2

Benefits

Eligible for Health, Dental, Vision, and 401K

Visa Sponsorship

Not eligible for visa sponsorship

Job Description

The client is seeking a contract React Front End Engineer to maintain, troubleshoot, and enhance an existing subscriber management and billing platform spanning three web applications.

Job Summary

  • Maintain and enhance an existing React application, primarily troubleshooting bugs and implementing targeted improvements.
  • Support payment integrations including ACH, 3D Secure, autopay, and payment processing.
  • Develop and maintain data-heavy admin dashboards, billing screens, forms, tables, and reporting interfaces.
  • Manage front-end security, dependencies, and build environment updates.
  • Own front-end deployments through Azure DevOps, including releases, testing, and rollbacks.
  • Perform regression testing, improve automated test coverage, and maintain technical documentation.
  • Partner closely with the Product Manager and Back End Engineer to prioritize enhancements and resolve issues.

Minimum Requirements

  • 5 years of professional front-end development experience.
  • Strong React experience, including familiarity with older class-component code and modern JavaScript.
  • Proficiency with Redux and React Router.
  • Experience building data-heavy admin interfaces, including tables, forms, filters, and dashboards.
  • Strong HTML, CSS, and responsive design skills.
  • Experience with REST APIs, JWT authentication, Node, Yarn, Webpack, and CI/CD deployment.
  • Proven ability to maintain and troubleshoot an existing production codebase.

Preferred Qualifications

  • Stripe Elements / React Stripe.js experience, particularly 3D Secure, ACH bank linking, and payment flows.
  • Experience with Bootstrap / Reactstrap and CSS-in-JS (Emotion or styled-components).
  • Familiarity with front-end security practices and Content Security Policy.
  • Experience with Jest, React Testing Library, or Playwright.
  • Working proficiency in TypeScript.
  • Knowledge of accessibility standards (WCAG).
  • Background in renewable energy, community solar, or billing platforms.

Skills

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