The ad says“Architect and execute complex A/B and multivariate experiments across high-converting marketing flows, partnering with CRO leads and data analysts to design statistically sound, performant test variants”
The ad says“Deep front-end expertise. Expert command of HTML, CSS, JavaScript/TypeScript, accessibility, and web performance, plus several years building production applications”
The ad says“Just as importantly, we want someone who treats AI-assisted development as a core engineering skill”
The ad says“Deep front-end expertise. Expert command of HTML, CSS, JavaScript/TypeScript, accessibility, and web performance, plus several years building production applications”
The ad says“Experience collaborating closely with designers in Figma”
The ad says“Deep front-end expertise. Expert command of HTML, CSS, JavaScript/TypeScript, accessibility, and web performance, plus several years building production applications”
The ad says“Deep front-end expertise. Expert command of HTML, CSS, JavaScript/TypeScript, accessibility, and web performance, plus several years building production applications”
The ad says“Architect and execute complex A/B and multivariate experiments across high-converting marketing flows, partnering with CRO leads and data analysts to design statistically sound, performant test variants”
The ad says“You’ll work across our modern Jamstack stack (Next.js, Sanity headless CMS, React, TypeScript) as well as our traditional headful WordPress platform (PHP, Twig templates), expanding our component libraries and engineering high-performance CRO frameworks.”
The ad says“You’ll work across our modern Jamstack stack (Next.js, Sanity headless CMS, React, TypeScript) as well as our traditional headful WordPress platform (PHP, Twig templates), expanding our component libraries and engineering high-performance CRO frameworks.”
The ad says“You’ll work across our modern Jamstack stack (Next.js, Sanity headless CMS, React, TypeScript) as well as our traditional headful WordPress platform (PHP, Twig templates), expanding our component libraries and engineering high-performance CRO frameworks.”
The ad says“You’ll work across our modern Jamstack stack (Next.js, Sanity headless CMS, React, TypeScript) as well as our traditional headful WordPress platform (PHP, Twig templates), expanding our component libraries and engineering high-performance CRO frameworks.”
The ad says“You’ll work across our modern Jamstack stack (Next.js, Sanity headless CMS, React, TypeScript) as well as our traditional headful WordPress platform (PHP, Twig templates), expanding our component libraries and engineering high-performance CRO frameworks.”
The ad says“You’ll work across our modern Jamstack stack (Next.js, Sanity headless CMS, React, TypeScript) as well as our traditional headful WordPress platform (PHP, Twig templates), expanding our component libraries and engineering high-performance CRO frameworks.”
The ad says“Deep front-end expertise. Expert command of HTML, CSS, JavaScript/TypeScript, accessibility, and web performance, plus several years building production applications”
The ad says“You’ll work across our modern Jamstack stack (Next.js, Sanity headless CMS, React, TypeScript) as well as our traditional headful WordPress platform (PHP, Twig templates), expanding our component libraries and engineering high-performance CRO frameworks.”
We’re looking for a Senior Front-End Developer with deep web experimentation experience — to drive high-velocity A/B and multivariate testing across our web properties while elevating our technical architecture
You’ll work across our modern Jamstack stack (Next.js, Sanity headless CMS, React, TypeScript) as well as our traditional headful WordPress platform (PHP, Twig templates), expanding our component libraries and engineering high-performance CRO frameworks.
CMS familiarity is essential: you’ll build and optimize features across both modern headless APIs and legacy PHP/Twig codebases
This is a senior individual-contributor role with real technical influence: you’ll set experimentation standards, mentor developers, and partner with the Engineering Manager on quality and site performance
Just as importantly, we want someone who treats AI-assisted development as a core engineering skill
We’re actively reshaping how we build — using AI coding agents, MCP-connected tooling, and automated workflows to move faster without sacrificing quality — and we want this person to help lead that evolution, not just keep up with it
Engineer across a hybrid web stack — ship production features in Next.js, Sanity, and React with TypeScript, alongside ongoing support and enhancements for our headful WordPress (PHP/Twig) environment across getjobber.com
Contribute to and extend our shared component library and design system so the team builds faster on consistent, reusable, well-tested foundations
Own performance and accessibility as first-class requirements — Core Web Vitals, semantic and accessible markup, and fast, resilient page loads that directly support conversion
Work seamlessly between headless and traditional CMS architectures — integrate APIs and structured content in Sanity while maintaining Twig-templated components in WordPress as we transition our web ecosystem
Write well-tested, scalable, well-organized code and drive consistent engineering practices through code review
Collaborate with our other developers on best technical practices and project decisions
Use AI coding tools and agents fluently (e.g. Claude, AI-assisted IDEs, agentic workflows) to accelerate development while keeping a critical eye on output quality and reliability
Improve how the team works with AI — building and refining MCP integrations, prompts, and context so our tickets, content, and codebase are AI-ready
Help define and benchmark team standards for AI-assisted development — identifying what works, documenting it, and raising the whole team’s baseline
Architect and execute complex A/B and multivariate experiments across high-converting marketing flows, partnering with CRO leads and data analysts to design statistically sound, performant test variants
Build for experimentation velocity and statistical integrity — minimize flicker, ensure client/server-side rendering accuracy, and reduce time-to-market from test hypothesis to live variant
Support SEO, LLM, and AI-search initiatives with the technical foundations (structured data, performance, rendering) that keep the site discoverable as search evolves
Set patterns and technical direction for how we build, and bring the team along through pragmatic, well-reasoned decisions
Mentor and coach other front-end developers, lifting their skills and holding the team to its engineering principles
Partner with the Engineering Manager on technical standards, code quality, and architecture
Identify and act on opportunities to improve the stack, tooling, and processes, and maintain strong team documentation
Preferred experience
Hands-on AI-assisted development. You actively use AI coding tools in your day-to-day work and have a point of view on where they help, where they don’t, and how to use them responsibly
Deep front-end expertise. Expert command of HTML, CSS, JavaScript/TypeScript, accessibility, and web performance, plus several years building production applications
Strong communication. You collaborate easily with both technical and non-technical partners — designers, marketers, and CRO
Technical leadership without ego. You set standards and mentor others while staying collaborative and open to better ideas
Proven web experimentation & CRO expertise. Hands-on experience architecting and shipping complex A/B, Multivariate Testing, and personalized web experiments with measurable conversion outcomes
Ambitious and humble. You don’t accept the status quo simply because “it’s what we’ve always done” — you push for better, newer, more innovative approaches while staying grounded
Strong Jamstack and modern front-end stack. Mastery of Next.js, React, TypeScript, and modern rendering strategies with a focus on performance and accessibility
Versatile CMS background (Headless Sanity & WordPress/Twig). Experience modeling content in headless CMS platforms (Sanity/Contentful) alongside hands-on proficiency in traditional WordPress, PHP, and Twig templates
Comfort in the grey areas. You’re adaptable, can prioritize amid ambiguity and changing priorities, and break large, complex problems into shippable pieces
A growth and experimentation mindset. You’re comfortable building for measurement and iteration, and you care about the business outcome your code drives
Experience with web experimentation and feature flag platforms (e.g. Kameleoon, Optimizely, VWO, LaunchDarkly) and product analytics tools (e.g. Amplitude, GA4)
Experience working within a design system or maintaining a shared component library
Back-end familiarity. Comfort working beyond the front end: integrating APIs and services, or background experience with full-stack development
Experience collaborating closely with designers in Figma
