Senior Web Developer, Marketing

OnPay is a fast-growing software company headquartered in Atlanta, offering a modern cloud-based payroll, HR, and benefits solution for small to midsize businesses. We’re currently seeking talented and curious individuals to join our team. We want to hear from you if you are interested in joining an exciting and fast-growing company!

OnPay is looking for a Senior Web Developer, Marketing to own the technical development, infrastructure, and health of , a critical part of how small businesses discover, evaluate, and ultimately choose OnPay.

Reporting to the VP, Growth Marketing, this is a hands‑on role for a strong web developer who can own a live marketing site end to end, from Word Press development, infrastructure, integrations, tracking, and site performance to landing pages, experimentation, and technical support for Growth initiatives.

You’ll work closely with Growth Marketing, Web/CRO, Content, Performance Marketing, Marketing Analytics, Rev Ops, Sales, Product, Partnerships, and other teams across the business. You’ll be expected to make sound technical decisions independently, move quickly from a clear business goal to a working solution, and proactively identify opportunities to improve how the site performs.

The right person is a developer first, but understands that the website is also a Growth engine. You care about clean code, site reliability, security, accessibility, and maintainability, and you’re equally comfortable implementing pixels, launching an A/B test, troubleshooting an integration, or building a new experience that helps turn more visitors into customers.

• Website ownership. Own the development, maintenance, and documentation of OnPay’s marketing website, landing pages, forms, calculators, and interactive tools in Word Press, including custom themes, blocks, and plugins.
• Fast, reliable delivery. Launch landing pages, campaigns, and web requests across Marketing and other business teams efficiently. Prioritize with the VP, flag tradeoffs early, and maintain strong delivery velocity.
• Experimentation. Partner with Web/CRO, Content, Performance Marketing, and Marketing Analytics to turn hypotheses into well-instrumented A/B and multivariate tests. Own technical setup, QA, launch, and implementation of winning experiences, and contribute to experiment design and analysis.
• Tracking. Own the technical implementation and QA of pixels, tags, conversion events, and the data layer using Google Tag Manager and GA4, partnering with Marketing Analytics and Rev Ops on measurement definitions and source-of-truth reporting.
• Integrations and custom code. Build forms, webhooks, integrations, and custom workflow actions across Hub Spot, Zapier, and other systems.
• Technical health. Keep the site fast, accessible, and secure, including Core Web Vitals, WCAG standards, reCAPTCHA, and privacy and consent settings. Work with the SEO and AI Search lead on site structure, schema, and indexing.
• Modern development. Evaluate our site architecture, developer tooling, and workflows and recommend improvements with a clear business case. Use AI and automation to speed up development, QA, testing, and troubleshooting, and review the output before it ships.
• Proactive problem-solving. Proactively identify opportunities to improve site performance, tracking, conversion, and development efficiency. Research solutions, evaluate tradeoffs, and recommend what OnPay should do next rather than waiting for a request.

• Standalone owner. You are comfortable owning the website and its infrastructure. You investigate first, make the technical call, and come back with a recommendation and the specific decisions you need.
• Fast and reliable. You turn basic…