Company Name: Sellfire

Job Details: Hiring Remotely in USA Remote 110K-170K Annually Senior level

Job Url: https://builtin.com/job/senior-front-end-engineer/6396377

Job Description: About SellfireSellfire 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.About the RoleWe’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.Key ResponsibilitiesBe 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 teammatesBackground and Experience6+ 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 preferredExperience with Twilio, Chrome extensions, and web application security are nice to have