Front End Developer Job at Mondo, Denver, CO

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  • Mondo
  • Denver, CO

Job Description


Apply now: 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.
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Job Tags

Contract work, Immediate start, Remote work

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