Senior Frontend Engineer

About the role

The Integrity team safeguards trust in HackerRank’s assessments, ensuring customers can rely on results without worrying about misuse or integrity gaps. With the rise of LLMs and other tools designed to game online evaluations, building robust and scalable integrity solutions has never been more critical.

As a Senior Frontend Engineer, you’ll play a key role in designing and building the platform that powers trustworthy assessments for millions of developers worldwide. You’ll craft solutions that not only detect and prevent misuse but also deliver a seamless, world-class developer experience. These systems must scale to support over 100K concurrent users, balancing performance, reliability, and usability. Your work will directly shape how candidates, recruiters, and hiring managers experience HackerRank.

What you’ll do

• Improve workflows and user experiences for candidates, recruiters, interviewers, and hiring managers - in collaboration with product and design.
• Build reusable, scalable frontend components that integrate seamlessly across HackerRank products.
• Champion frontend engineering best practices - performance, accessibility, testing, and code quality.
• Regularly measure and optimize key web performance metrics.
• Collaborate with cross-functional teams to raise product quality and user experience.
• Mentor and guide junior engineers and interns.

Who you are

• An experienced frontend engineer with 4+ years building production-ready React applications.
• Strong in JavaScript, HTML, and CSS, with a sharp eye for accessibility and detail.
• Familiar with the modern frontend ecosystem - from Webpack and Babel to build tooling and bundlers.
• Someone who treats testing and debugging as part of the craft, not an afterthought.
• Confident in browser fundamentals, performance tuning, and building responsive interfaces.
• Open to AI-native tools that help you move faster, write better code, and raise the bar.

Even better if you have

• Experience with frontend security and protecting user trust.
• Exposure to TypeScript and frameworks beyond React.
• Comfort working with backend APIs and platform-level integrations

You will thrive in this role if

• You lead with product thinking and bring deep empathy for real customer problems.
• You turn ambiguity into clarity through structured problem-solving and crisp, high-quality execution.
• AI tools are part of your workflow - helping you move faster, solve smarter, and raise the bar on craftsmanship.