Senior Front-End Engineer, Proxima

$150-190k

+ Equity

React

CSS

TypeScript

Redux

HTML

D3.js

Cypress

Plotly

Jest

Playwright

Senior and Expert level

New York

Remote from US

More information about location

Predictive data intelligence

Be an early applicant

Predictive data intelligence

21-100 employees

B2BArtificial IntelligenceMarketingAnalyticsSaaSAdvertising

Be an early applicant

$150-190k

+ Equity

React

CSS

TypeScript

Redux

HTML

D3.js

Cypress

Plotly

Jest

Playwright

Senior and Expert level

New York

Remote from US

More information about location

21-100 employees

B2BArtificial IntelligenceMarketingAnalyticsSaaSAdvertising

Company mission

To help modern brands navigate the ever-changing digital landscape and maximize their marketing performance with AI-powered solutions that have traditionally been out of reach for most companies.

Job

Company

Role

Who you are

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
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

Desirable

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

What the job involves

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
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

Our take

Proxima AI addresses the challenge faced by consumer technology businesses in effectively leveraging data intelligence for growth. With a proprietary database of over 65M unique shoppers, it allows companies to navigate the complexities of consumer behaviour to inform their marketing.

Essentially, Proxima AI helps users get their ads in front of "high-intent" shoppers by taking shopper data and generating the right audiences for the right product. It also supplies AI-powered business analytics, contributing to increased customer acquisition, revenue and growth.

Recent funding positions Proxima to accelerate its innovation trajectory with the expansion of its technology platform. It will also pursue broader market reach as it expands its network of connections and works to solidify its position as a leader in the data intelligence space.

Steph

Company Specialist at Welcome to the Jungle

Company

Funding (1 round)

Apr 2024

$12m

SERIES A

Total funding: $12m

Company HQ

SoHo, New York, NY

Leadership

Alex Song

(Founder & CEO)

Co-founder of Grummies, WellPath, Finn and Innovation Department. Previously co-founded DojoMojo. Also worked as an Investment Analyst at Pershing Square Capital Management and as an Associate at Goldman Sachs.

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