Senior UI Engineer


North America Region

Job Functions


Corelight is an early-stage cybersecurity startup based in downtown San Francisco, with offices in Columbus, OH and Santa Clara, CA. We secure some of the most sensitive and mission-critical networks in the world, and our rapidly-growing customer base includes eight of the Fortune 50.  We help our customers know their networks better than anyone else, delivering insight that dramatically shifts the way that SOCs react to, and defend against, attacks. Corelight provides vital assistance at every phase, from alert to response and beyond, through rich, structured, pivotable data.

Our culture is open and accepting. We incorporate data, ideas, and evidence from anywhere, and use them to drive success. We take thoughtful risks and build on each other’s work to uncover the best ideas. We serve our customers, the open-source community, and each other.

We are looking for a passionate and dedicated Sr UI Engineer to join the team here at Corelight. You will be tasked with leading the development of new features and maintaining our existing web-based interfaces while working closely with our API team to deliver best in class user experiences. We work mainly with a React/Redux stack, however full stack web development expertise is a strong plus.

Engineers at Corelight are expected to own initiatives from end to end, so strong communication and coordinating skills are crucial. Team members are encouraged to contribute and solve problems wherever they feel their strengths apply.


  • Drive the execution and architecture of the UI for a SaaS-based product
  • Coordinate with product stakeholders and fellow engineers to gather requirements and design solutions
  • Participate in code reviews and lead technical discussions
  • Implement new features while also modernizing the existing codebase when possible
  • Provide mentorship and direction for junior team members 


  • 5+ years production experience contributing to frontend web applications
  • Hands-on experience leading the development of a React-based application
  • Production experience with a Typescript-based application
  • Expert-level knowledge of React
  • Experience working with Redux or other state management library
  • Knowledge of UX best practices and common patterns
  • Strong CSS fundamentals, knowledge of CSS architecture
  • Experience with formal API Specification (OpenAPI, Swagger, json schema)
  • Experience with Javascript unit testing using a framework like Jest or similar
  • Knowledge of web fundamentals - HTTP request/response, authentication, etc
  • Experience working with cloud services such as AWS, tracing tools like NewRelic, or similar
  • Ability to balance production work with planning/coordination efforts
  • Experience working in a SCRUM/Agile methodology environment

A note on experience

We understand that no candidate is perfectly qualified for any job. Experience comes in different forms; many skills are transferable; and passion goes a long way. Even more important than your resume is a clear demonstration of dedication, impact, and the ability to thrive in a fluid and collaborative environment. We want you to learn new things in this role, and we encourage you to apply if your experience is close to what we’re looking for.

We also know that diversity of background and thought makes for better problem solving and more creative thinking, which is why we're dedicated to adding new perspectives to the team.

Working at Corelight

In addition to helping to make networks safer around the world, Corelight is a great place to work. We provide competitive salaries, equity and benefits, but those are just table stakes. No matter where you're based, we aspire to make working here one the best experiences of your career.

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