Senior Frontend Engineer

Runwise is looking for a Senior Frontend Engineer who is highly motivated, results-oriented, and passionate about building intuitive and performant user experiences that customers love..

Runwise (www.runwise.com) 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. As of today, Runwise’s technology takes the equivalent of 50,000 cars worth of carbon emissions off the road each year. Runwise has offices in New York and Boston but is a remote-first product/engineering company, and has been since its creation.

We’re seeking a 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.

Responsibilities will include, but are not limited to:

• Being a core contributor to our React-based web applications, delivering responsive, reliable, and accessible interfaces
• Collaborating closely with design, product, and backend teams to build new features that empower our users to monitor and control energy systems
• Building reusable UI components and libraries with performance and scalability in mind
• Helping define and improve frontend architecture and development standards
• Monitoring performance and addressing UI-related issues, including usability, speed, and responsiveness
• Ensuring a consistent experience across browsers and devices

Who you are:

• You have 5+ years of frontend development experience, including 3+ years with React. Familiarity with modern React concepts, including state management, functional components, and hooks, is essential.
• Experience with common React libraries including React Router, Recharts, Redux, Redux Toolkit and RTK-Query.
• You are passionate about building great user experiences and working on complex, data-rich applications
• You have strong JavaScript and TypeScript skills, and are comfortable with modern frontend tooling, including Vite, NextJS, Webpack, Babel, and ESLint
• You are experienced with frontend automated testing technologies like Vitest, Jest, or Cypress
• You’re 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

Salary: $140,000-$190,000 (varied on experience and market rate)

What you believe:

• 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 LD Series
• Employee Resource Groups (e.g. DEIB Committee, Run Club)

This is an excellent opportunity to join a fast-growing company, one of the true leaders within energy efficiency in the Northeast. You will be surrounded by talented people, including working very closely with our co-founder and sales leader. Your success will also make a tangible impact on reducing carbon emissions across the country, within the cities where we operate.