Senior JavaScript Frontend Engineer (Custom Framework + jQuery)
Remote | High Autonomy | Long-Term Product Focus
The Role
We’re hiring a Senior JavaScript Frontend Engineer who can take ownership of complex features in a large, real-world production app. You’ll work directly with our in-house framework built on top of jQuery, contribute to performance improvements, and help prepare the ground for future modernization (e.g., gradual React migration).
What You’ll Do
Build, maintain and refactor UI components in our custom jQuery-based framework
Work with product and backend teams to deliver user-facing features from idea to deployment
Navigate and improve a large, business-critical legacy codebase
Apply deep JavaScript knowledge to keep code performant, readable and stable
Help shape the future of the frontend stack - we aim to evolve carefully, not rebuild blindly
What We’re Looking For
Expert-level JavaScript knowledge (ES5/ES6+), DOM manipulation, browser quirks
Strong experience with jQuery beyond just plugins - ideally in custom frameworks
Confidence working independently - you solve problems and make decisions without hand-holding
Solid understanding of performance, debugging and maintainable architecture
Experience delivering real-world features in a production application
Nice to Have
Experience with React (even better if you’ve migrated from legacy stacks)
Familiarity with build tools like Vite, Webpack, or custom pipelines
Good instincts for UX and clean UI logic
Not What We’re Looking For
WordPress/theme developers
jQuery plugin assemblers without deep JS understanding
(We need an engineer, not a page builder.)
Perks & Benefits
💻 100% Remote - work from anywhere
⏰ Flexible schedule - results matter, not hours
🧠 High autonomy - you’ll own your work and make meaningful decisions
🚀 Long-term product focus - no short-term freelance churn
