Senior Front End Engineer

Sellfire is the #1 solution for high-velocity sales. We unlock consistently great performance for results-driven leaders at companies of all sizes. Are you interested in working with team on a mission to help customers put coins into a predictable machine and get dollars out?

We are a team of experienced CEOs, CROs, operators and technologists who live and breathe high-velocity sales. The way we work is guided by our values: Here to win championships, Have your back, Elevate your game.

We’re looking for a Senior Frontend Engineer to deliver clean, scalable, and performant product interfaces across our product ecosystem. You will play a pivotal role in developing our React-based frontend architecture and collaborating closely with our product, design, and backend teams. You will leverage AI in your day-to-day and use it to power customer experiences. Your impact will be felt in every user interaction.

This is a remote position with some required travel to New York City and open to candidates residing in Eastern - Pacific timezones.

• Be accountable for the frontend experience across the Sellfire platform — from component architecture to performance and code quality.

• Work closely with QA, backend, design, and product teams to build new features.

• Understand how our customers think and work — and translate that into great UI.

• Maintain and foster a learning mindset, researching new technologies and sharing knowledge with teammates

• 6+ years of experience building modern, production-grade frontend applications in start-up environments.

• At least 3 years using React (functional components, state management, performance optimization).

• Proven track record of success delivering high-quality, highly available, scaled solutions.

• Comfort working across the stack, especially when debugging or integrating APIs.

• Strong proficiency with TypeScript, Next.js, and styled-component.

• Practical experience with technologies such as GraphQL, application performance monitoring, and feature flagging strongly preferred

• Experience with Twilio, Chrome extensions, and web application security are nice to have