Proxima is more than just a business to us; it's a vision of transforming the consumer technology landscape and giving B2C businesses the data they need to make informed decisions that drive highly performant actions. We are empowering our customers to achieve their greatest potential with innovative, data-driven solutions.

We are a first-of-its-kind data intelligence solution that leverages artificial intelligence and a proprietary database of over 60 million (and growing) unique shopper personas to enable businesses to achieve greater scale, efficiency, and financial success across their acquisition, retention, and operational strategies. We’re on a mission to help maximize their performance with AI-powered solutions that have traditionally been out of reach for most companies. We believe profitable growth starts with better data.

About The Role

Proxima has a unique dataset most companies only dream of: real-time, anonymized cross-brand transaction data at scale.

We're looking for a Senior Frontend Engineer to join our team building AI-driven products powered by this data to help level the playing field, helping independent brands find their perfect customers while helping consumers discover their next favorite products from businesses they've never heard of.

You'll be responsible for crafting exceptional user experiences, from designing intuitive AI agent interfaces to building responsive web applications that make complex data insights accessible and delightful. This role is ideal for front-end specialists who obsess over pixel-perfect designs, smooth interactions, and performant web applications.

If you thrive in fast-paced, startup environments and love pushing the limits of modern frontend development with AI assistance, we want to talk to you.

Responsibilities

Build, maintain, and scale frontend applications using TypeScript and React
Design and implement user interfaces for AI agent interactions, data visualizations, and consumer-facing products
Write clean, maintainable, and semantic HTML/CSS/SCSS with a strong eye for design and UX
Create responsive, accessible, and performant web applications that work flawlessly across devices and browsers
Collaborate closely with product and designers to translate mockups and prototypes into production-ready code
Build reusable component libraries and design systems
Optimize frontend performance, including bundle sizes, load times, and runtime efficiency
Work with backend teams to integrate APIs and manage application state effectively
Own frontend architecture decisions and champion best practices across the team
Stay on the cutting edge of modern frontend development, especially around AI-powered user experiences

Qualifications

6+ years of professional frontend development experience
Bachelor's degree (or higher) in Computer Science, Engineering, Design, or a related field
Proven experience working in startup environments—you've shipped products fast and worn multiple hats
Expert-level proficiency with TypeScript and React (including hooks, context, and modern patterns), with a strong ability to design maintainable, strongly-typed APIs
Strong command of CSS/SCSS, including Flexbox, Grid, animations, and responsive design techniques
Experience with modern frontend tooling (Webpack, Vite, ESBuild, etc.)
Solid understanding of web performance optimization and browser APIs
Experience building interfaces for AI-powered applications or complex data-driven products
Daily use of AI-assisted coding tools (e.g., GitHub Copilot, Cursor, Claude Code, etc.) is a requirement
Comfortable owning projects independently in a high-velocity development environment

Nice to Have

Experience with state management libraries (Redux, Zustand, Jotai, etc.)
Familiarity with design systems and component library development (Storybook, Radix, shadcn/ui, etc.)
Knowledge of data visualization libraries (D3.js, Recharts, Plotly, etc.)
Experience with frontend testing frameworks (Jest, Vitest, Playwright, Cypress)
Understanding of accessibility standards (WCAG) and inclusive design principles
Background in UX/UI design or strong design sensibility

Why Join Our Engineering Team

Be part of a lean team building the next generation of AI-native tools and workflows
High autonomy and ownership from day one
Competitive compensation and equity
Remote-first culture with flexible working hours (NYC hybrid optional)
A fast, iterative, and supportive development environment where your work has real impact

This role is open to remote candidates based in the US or hybrid candidates in the New York City area.

Work Authorization: We are not sponsoring visas at this time

Why You'll Love Working Here

Competitive salary

Unlimited PTO

Health benefits for you and your dependents

Annual memberships to OneMedical and Teladoc

Summer Fridays (July 4 – Labor Day)

Weekly in-office team lunch

12 weeks paid parental leave

401(k) program

Pre-tax commuter, HSA, and FSA benefits

Pet-friendly office in the heart of Soho

We value diversity and are proud to be an equal opportunity employer. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

150000 - 190000 USD a year

The actual base salary offered for this position will depend on numerous factors including individual performance, skills and experience. The base salary is just one component of Proxima’s compensation package which includes a wide range of medical, dental, vision and other benefits, as well as equity.

See more open positions at Proxima

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