Senior Frontend Engineer

About Density:

Density’s mission is to measure and improve our footprint on the world. 

We help companies understand how their workplaces are used. We do that by observing behavior in the office through our highly accurate and always anonymous sensors. In other words: where are people actually spending their time? We translate that data into actionable, opinionated insights that help companies increase the financial and experiential performance of any workplace. 

Today, we work with companies from Fortune 500s to high growth innovators in technology, financial services and healthcare, occupying more than a billion square feet worldwide. And we’re in it for the long game: what if we knew more, created better spaces, and could build cities that worked and felt better?

That’s where you come in...

About The Role:

As a Senior Frontend Engineer on our team, you will play a key role in building and refining web applications that transform how people interact with workspaces. Leveraging your expertise in React and modern front-end development, you will create innovative, responsive features for applications that surface IoT data and enhance how people interact with data. You will focus on delivering high-quality front-end solutions that perform seamlessly across a variety of devices, including large-screen, in-office touchscreens, while also supporting mobile functionality with React Native.

In this role you will:

• Develop and maintain robust, scalable web applications using React, ensuring performance and responsiveness across desktop and large-screen displays.
• Continue to perform with sub-second latency for person entry/exit events in physical spaces..
• Collaborate closely with designers, product managers, and backend developers to ensure front-end features align with user needs and technical requirements.
• Build reusable front-end components and libraries for future use, promoting best practices in code efficiency and modularity.
• Integrate with backend services and APIs to deliver seamless user experiences and data interactions in real time.
• Optimize applications for maximum performance and scalability, delivering a consistent experience across various devices, including interactive, large-screen applications.
• Support mobile features using React Native, integrating React components with native modules as needed.
• Establish a test-driven development culture, writing and maintaining unit, integration, and end-to-end tests to ensure code quality and reliability.
• Implement and maintain automated testing and CI/CD pipelines using tools like GitHub Actions, enabling automated test runs as part of the pull request flow.
• Drive cross-browser and cross-device testing to ensure consistent user experiences on all platforms.
• Maintain and update front-end build processes to support faster development cycles and efficient deployment.

The ideal candidate will have:

• 5+ years of professional experience in front-end development, with a strong focus on React and web-based applications.
• Proven experience building and optimizing responsive, high-performance web applications.
• Knowledge of mobile development in React Native is a plus, with a focus on supporting cross-device functionality when needed.
• Strong understanding of front-end architectures and design patterns, ensuring scalable and maintainable codebases.
• Proficiency in integrating APIs and managing data flow between the front end and back end.
• Expertise in test-driven development (TDD) and the ability to create and execute comprehensive tests, including unit, integration, and functional tests.
• Proficiency in setting up and managing CI/CD pipelines, particularly with GitHub Actions for automated testing and deployment.
• Familiarity with responsive design principles and cross-browser compatibility, ensuring a consistent experience across all devices.
• Strong collaboration and communication skills, working effectively with cross-functional teams to deliver high-quality products.
• Attention to detail and a passion for quality, ensuring that applications are robust, user-friendly, and performant.

Bonus:

• Experience with augmented reality (AR) technologies and integrating AR features into applications.

Job Compensation Range:

Salary Range: $150,000 - $225,000

Preferred Primary Location: Commuting distance to San Francisco

This is a hybrid role that requires a minimum in office 4 days a week in office in SF: Monday, Tuesday, Thursday & Friday

#LI-Hybrid

We offer: