Our client is seeking a Frontend Developer with deep expertise in JavaScript, who can work independently within a small, dynamic startup environment. The ideal candidate is self-driven, proactive, and comfortable handling a broad range of frontend development tasks. This role involves working on a highly innovative project that has already raised Series A funding and is continuing to attract capital.

Key Responsibilities

1. Develop and Maintain Frontend Features. Build and maintain the frontend for a pioneering product, ensuring high performance and responsiveness across devices and browsers.
2. Prototype Development. Work on an evolving prototype, contributing directly to the project’s growth and success.
3. Browser Extension Development. Create and optimize browser extensions with a deep understanding of how different browsers (Chrome, Safari, etc.) handle JavaScript.
4. Bug Management & Self-Assignment. Be responsible for identifying, logging, and fixing bugs without relying on a product manager or external team.
5. Collaborate and Communicate Effectively. Work closely with team members to ensure timely solutions. Proactively communicate when roadblocks arise.

Qualifications

1. Core JavaScript Expertise. Strong proficiency in core JavaScript is a must. If you've used frameworks like React or Angular, it's fine as long as you deeply understand how things work under the hood.
2. HTML/CSS Skills. Strong understanding of web development fundamentals, including the ability to solve a coding challenge using core JS, HTML, and CSS.
3. Browser Extension Experience. Experience in building and optimizing browser extensions is a key requirement.
4. Cross-Browser Knowledge. Solid understanding of how JavaScript implementations vary across browsers like Safari and Chrome.
5. Audio/Video Streaming. Experience with audio or video streaming is highly desirable, especially if you’ve worked with libraries like ToneJS for audio manipulation.
6. Responsive Design. You must be skilled in developing responsive interfaces that work seamlessly across devices.

Ideal Candidate

1. Self-Driven & Proactive. You’re highly motivated, capable of self-managing, and thrive in an environment with minimal supervision.
2. Independent Problem-Solver. In a small, fast-moving startup, you’re expected to manage your own tasks, identify bugs, and find solutions. If you’re stuck on a problem for more than an hour, you’ll need to communicate and seek help.
3. Start-up Enthusiast. Comfortable working in a small team without a formal product manager, excited by the startup pace and ambiguity.

Nice to Have

1. ToneJS Knowledge. Experience with audio libraries like ToneJS, particularly for modifying tone and pitch.
2. Experience in Small Teams or Startups. Familiarity with working in lean environments where adaptability and wearing multiple hats is key.

This role is perfect for a developer who enjoys both the freedom and challenges of startup life, with the opportunity to make a real impact on a groundbreaking product.