Senior Frontend Engineer

Position Overview

• Location Type: Remote-First (Offices in New York and Boston)
• Job Type: Full-time
• Salary: $140,000 - $190,000 (varied on experience and market rate)

Runwise is seeking a highly motivated, results-oriented, and passionate Senior Frontend Engineer to lead the development of high-impact features that improve user experience and drive customer satisfaction. As a Senior Software Engineer, you will design, implement, and iterate on frontend systems that interact with real-time data and control systems. Your efforts will directly increase our customers’ climate control savings, improve tenant comfort, and decrease our collective carbon footprint. Runwise is a fast-paced, customer-focused climate-tech startup that controls and runs the key energy systems (heating, water, etc.) in 6000+ buildings throughout the US. Runwise’s unique hardware and software service significantly reduces energy usage, substantially lowering costs and carbon output.

Responsibilities

• Be a core contributor to our React-based web applications, delivering responsive, reliable, and accessible interfaces.
• Collaborate closely with design, product, and backend teams to build new features that empower our users to monitor and control energy systems.
• Build reusable UI components and libraries with performance and scalability in mind.
• Help define and improve frontend architecture and development standards.
• Monitor performance and address UI-related issues, including usability, speed, and responsiveness.
• Ensure a consistent experience across browsers and devices.

Requirements

• 5+ years of frontend development experience.
• 3+ years of experience with React, including modern React concepts like state management, functional components, and hooks.
• Experience with common React libraries including React Router, Recharts, Redux, Redux Toolkit, and RTK-Query.
• Passion for building great user experiences and working on complex, data-rich applications.
• Strong JavaScript and TypeScript skills.
• Comfort with modern frontend tooling, including Vite, NextJS, Webpack, Babel, and ESLint.
• Experience with frontend automated testing technologies like Vitest, Jest, or Cypress.
• Comfortable working with REST APIs and collaborating with backend teams.
• Experience with Native iOS, Native Android, React Native, or mobile web development is a big plus.

Company Beliefs

• No job is too small.
• Sincerity builds trust.
• Setbacks fuel progress.
• Efficiency is vital.

Benefits

• Medical, dental, and vision insurance
• HSA & FSA options
• Paid Parental Leave
• Access to Talkspace & Health Advocate
• Flexible PTO
• Commuter Benefits
• 401K
• Company-paid life insurance
• Voluntary supplemental life insurance
• Free in-office lunch on Wednesdays
• Hybrid work environment
• Summer Fridays
• Monthly L&D Series
• Employee Resource Groups (e.g., DEIB Committee, Run Club)

Company Information

Runwise (www.runwise.com) is a remote-first product/engineering company with offices in New York and Boston. It is a fast-growing leader in energy efficiency, making a tangible impact on reducing carbon emissions across the country. This is an excellent opportunity to join a talented team and work closely with the co-founder and sales leader.