xelys jobs xelys jobs

Front End Engineer (Sr./ Staff)

Sundayy

full-remoteseniorpermanentfrontend United States Today via LinkedIn

See how well this job matches your profile

Sign up to get an AI match score and generate a tailored application in seconds.

Get your match score

Tags

ReactTypeScriptFrontend ArchitectureLarge DatasetsData VisualizationAPI IntegrationsTesting LibraryCypressPlaywrightLLMs

About the role

Role Overview

Senior/Staff Front-End Engineer for a remote-first team, helping shape the architecture and build scalable, user-centric interfaces for an energy software platform. You will collaborate with product, design, backend, and data teams to turn complex energy domain requirements into intuitive, high-performance front-end applications.

Responsibilities

  • Participate in critical front-end architecture decisions and strategic initiatives
  • Design and implement scalable, user-friendly interfaces for complex energy applications
  • Partner with product managers, designers, and backend engineers to deliver cohesive user experiences
  • Translate complex domain requirements into elegant UI solutions
  • Develop and maintain large-scale, data-driven front-end components
  • Implement robust testing strategies (unit, functional, and end-to-end)
  • Continuously improve front-end performance, security, and usability
  • Stay current with emerging technologies and apply best practices

Requirements

  • Strong commitment to clean energy and combating climate change
  • Proven experience building front-end or full-stack applications at scale
  • Extensive experience owning complex, data-intensive applications
  • Proficiency with large-scale TypeScript and React codebases
  • Strong collaboration skills with product, design, backend, and data teams
  • Experience designing front-end strategies for visualizing and interacting with large datasets
  • Understanding of data models and API integrations
  • Familiarity with AI-augmented engineering tools (GenAI/LLMs/agentic tools)
  • Knowledge of security best practices in enterprise environments
  • Excellent communication skills for remote collaboration across time zones

Nice to Have / Additional Signals

  • Experience with modern testing frameworks: Testing Library, Cypress, Playwright

Location / Work Mode

  • Remote-first team
  • Preferably based in SF Bay Area or NYC, with flexibility for candidates in the US, Canada, and Europe

About Sundayy

Equilibrium Energy is a clean energy technology company focused on transforming the power sector with innovative software and AI-driven solutions. It is building a first-of-its-kind AI operating system for the energy industry to enable a cleaner, more resilient energy grid. The team brings together technologists, power market experts, and AI researchers to modernize how the power ecosystem operates.

Scraped 8/3/2026