Senior Web Developer, Marketing

OnPay; United States; Remote; USD 135,000 - 150,000; Full time

Benefits offered by this job

Health insurance

401(k) match

PTO 4 weeks

Fertility benefits

Parental leave

Remote work

Job summary

OnPay is seeking a hands-on Web Engineer to own the development and technical health of our live marketing site used by small businesses. You’ll combine WordPress development and infrastructure with analytics, integrations, performance, and conversion experimentation.

You will collaborate across marketing and business teams to translate growth goals into reliable web experiences and make independent technical recommendations, practicing strong testing and accessibility standards.

Qualifications

• Five+ years of web development experience on a marketing site or B2B software.
• Proficiency in HTML, CSS/SCSS, JavaScript, PHP, and MySQL; modern JS development.
• Ability to investigate issues, make decisions, and deliver from business goals.
• Strong testing and analytics habits, including tracking data checks and experiment results.

Responsibilities

• Build and maintain the marketing site, landing pages, forms, calculators, and interactive tools, including WordPress themes, blocks, and plugins.
• Deliver campaign pages and web requests, prioritizing work and communicating tradeoffs.
• Set up and quality-check A/B and multivariate experiments; implement winning changes and analyze results.
• Maintain analytics and marketing integrations, tracking pixels, consent settings, and workflow connections (HubSpot, Zapier).
• Improve speed, accessibility, security, and technical SEO (Core Web Vitals, WCAG, schema).

Skills

WordPress

JavaScript

HTML/CSS

PHP

Education

Bachelor's degree in Computer Science

Tools

HubSpot

Zapier

Job description

Role overview

Own the development and technical health of a live marketing website that helps small businesses discover and evaluate services. This hands‑on role combines WordPress development and infrastructure with analytics, integrations, performance, and conversion experimentation. You will work across marketing and business teams, turning growth goals into reliable web experiences and making independent technical recommendations.

Responsibilities

• Build and maintain the marketing site, landing pages, forms, calculators, and interactive tools, including custom WordPress themes, blocks, and plugins.
• Deliver campaign pages and other web requests, coordinating priorities and communicating tradeoffs and delivery status.
• Set up and quality-check A/B and multivariate experiments; implement winning changes and contribute to experiment analysis.
• Maintain analytics and marketing integrations, tracking pixels, consent settings, and workflow connections across tools such as HubSpot and Zapier.
• Improve speed, accessibility, security, and technical SEO, including Core Web Vitals, WCAG practices, CAPTCHA, schema, and indexing.
• Review site architecture and development workflows, and use automation to accelerate implementation, testing, and troubleshooting while checking its output.

Requirements

• At least five years of web development experience; ownership of a marketing website, ideally for a B2B software business, is preferred.
• Proficiency in HTML, CSS or SCSS, JavaScript, PHP, and MySQL; experience with modern JavaScript development is also sought.
• Ability to independently investigate issues, make sound technical decisions, and build from clear business goals.
• Strong testing and analytical habits, including checking tracking data and experiment results for errors.
• Careful attention to details such as broken tags, form validation, accessibility text, and duplicate events.
• Clear communication and collaboration across teams, analytics partners, and agencies; examples of personally built websites, tools, experiments, or integrations are requested.

Nice to have

• A degree in computer science, web development, or a related discipline, or equivalent practical experience.

Benefits and work setup

• Remote within the United States, with an optional Atlanta office location.
• Base salary range of $135,000-$150,000, with bonus and stock options also described.
• Four weeks of paid time off, paid holidays, health and insurance benefits, fertility benefits, parental leave, and a 401(k) with company match.