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Senior Web Developer

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Location: Remote
Compensation: Salary
Reviewed: Tue, Oct 27, 2026
This job expires in: 29 days

Job Summary

Owning the technical development and infrastructure of OnPay's marketing website, the full-time Senior Web Developer will manage WordPress development, integrations, and site performance while collaborating with various teams to enhance user experience and drive growth, all in a remote setting.

Key responsibilities
  • Own the development and maintenance of the marketing website, including landing pages and interactive tools in WordPress
  • Launch campaigns and web requests efficiently while maintaining strong delivery velocity and prioritizing tasks
  • Implement and manage A/B and multivariate tests, ensuring proper tracking and analysis of results
Required qualifications
  • 5+ years of web development experience, preferably managing a marketing website in a B2B SaaS environment
  • Strong proficiency in HTML, CSS or SCSS, JavaScript, PHP, and MySQL, with experience in a modern JavaScript framework like React
  • Hands-on experience with WordPress, including custom themes and plugins, and familiarity with Google Tag Manager and GA4
  • Experience with A/B testing platforms and a solid understanding of conversion rate optimization (CRO)
  • Knowledge of website performance, security, accessibility standards, and SEO best practices

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