Senior Front-End Engineer

Summary

Join Equilibrium Energy, a Series B clean energy startup, and become a Sr. Staff/Principal Engineer. You will play an instrumental role in shaping the future of energy software by driving critical frontend architecture decisions and strategic initiatives. As a technical leader and mentor, you will guide junior colleagues while collaborating with various teams to align technical strategy with business goals. This role requires expertise in frontend/full-stack engineering at scale, data visualization, AI-augmented software development, and modern testing strategies. The ideal candidate will have a collaborative mentality and strong communication skills. Equilibrium offers a competitive salary, comprehensive benefits, unlimited vacation, flexible work schedule, and remote work options.

Requirements

• A commitment to clean energy and combating climate change
• Proven experience leading frontend/full-stack engineering at scale, including conception, development and ownership of complex, data-intensive UI/UX architectures, large-scale Typescript/React codebases, and performance optimization strategies
• Collaboration-driven mentality: work closely with product managers, designers, backend engineers, and data scientists across multiple teams to align technical strategy with business goals and deliver cohesive user experiences. The strongest candidates will have experience working across domains, using technical leadership to unlock everyone’s productivity
• Demonstrable experience designing and implementing frontend strategies for effectively consuming, visualizing, and interacting with large, complex datasets, including understanding the underlying data models and APIs
• Proficient in AI-augmented software development (e.g. Gen AI and LLMs, agentic tools, Cursor, Windsurf, etc.)
• Good understanding of security best practices, bonus points if it’s in an enterprise environment
• Deep expertise with modern testing strategies for frontend applications, including unit, functional, and end-to-end testing frameworks (e.g. Testing Library, Cypress, and Playwright)
• A track record of elevating team performance, mentoring engineers, and establishing best practices that improve engineering quality and productivity
• Strong communication skills for collaborating within a remote-first company that spans all time zones across EU and the Americas

Responsibilities

• Drive critical frontend architecture decisions and strategic initiatives, shaping the experience for both internal customers and large power companies
• Build a deeply interconnected ecosystem of front end applications within a complex domain, creating software that enables both powerful automation and human agency
• Navigate complex, ambiguous problem spaces and translate intricate domain requirements into elegant, scalable UIs
• Play an important role in the mentorship and growth of junior colleagues, acting as a technical leader and mentor within the engineering team
• Serve as a key voice to drive technical alignment across multiple programs

Preferred Qualifications

• Background in the energy and power systems sector
• Proficiency in Python, with FastAPI and common visualization frameworks (e.g. Plotly) being an additional plus
• Experience with Auth0 to drive user authentication and authorization
• Experience with observability and error-tracking tooling like Sentry, Grafana, Honeycomb, and Prometheus
• Experience building on AWS
• Familiarity with automated build, deployment, and orchestration tools such as CI/CD, Pants, Docker, and Kubernetes
• An advanced degree in computer science

Benefits

• Competitive base salary and a comprehensive medical, dental, vision, and 401k package
• Opportunity to own a significant piece of the company via a meaningful equity grant
• Unlimited vacation and flexible work schedule
• Ability to work remotely from anywhere in the United States, Canada & Europe, or join one of our regional hubs in Boston, SF Bay Area, or London
• Accelerated professional growth and development opportunities through direct collaboration and mentorship from leading industry expert colleagues across energy and tech