Senior Frontend Engineer (React)

Madfish; Remote; GBP 82,000 - 132,000; Full time

Job summary

A fast-growing AI startup is seeking a Staff Frontend Engineer to enhance their product velocity and own features end-to-end. With a focus on building a revolutionary accounting platform, the role involves developing the UI with React and Next.js, collaborating closely with product, design, and backend teams to ensure seamless integration. This is a remote-first position offering competitive compensation, equity, and significant autonomy in a high-impact environment.

Benefits

15 PTO days

12 public holidays

Visa sponsorship for relocation to NYC

High-trust, high-autonomy work environment

Qualifications

• 8+ years of experience in frontend development, particularly with React.
• Strong understanding of JavaScript, TypeScript, and responsive design principles.
• Experience building and testing APIs.

Responsibilities

• Build and optimize product UI in React and Next.js.
• Collaborate with product, design, and backend teams.
• Ensure seamless integration and performance across browsers.

Skills

Frontend development

React

JavaScript

TypeScript

Responsive UI design

API testing

Job description

👀 TL;DR

• Elite team of FE engineers building complex AI accounting & fintech product
• Huge momentum, growing fast, huge product & AI roadmap
• High-speed development - one of the fastest teams on the planet
• Comp: $110k-$175k USD base + $40k USD equity ($150k-$215k USD total)
• Backed by top San Francisco & New York VCs
• Remote with in-person meetups & daily New York EST timezone overlap
• Founders built & exited prior company at 100M ARR and 350+ people

Why This Role Matters Now

We’re growing our Engineering team and hiring our next Staff Frontend Engineer to increase our product velocity, own features end-to-end and bring DualEntry’s AI-powered accounting platform to the world’s fastest-growing companies.

About DualEntry

Founded in 2024, DualEntry is one of NYC’s fastest-growing AI startups, backed by top-tier VCs and 30+ unicorn founders.

Our team previously built a $100M ARR business from scratch, scaled it to 300+ people, and led a successful exit. Now, we’re building a category-defining SaaS product to automate and modernize enterprise accounting — one of the most painful and outdated workflows in finance.

We move fast, build with precision, and care deeply about what we ship.

📍 Location: Remote-first with overlap to US EST working hours.

Where You’ll Create Impact

• Build, ship, and own major parts of the product UI in React + Next.js
• Design and optimize interactive experiences that make complex workflows simple
• Work closely with product, design, and backend to ensure seamless integration and clarity
• Contribute to architecture, performance, accessibility, and responsiveness across browsers
• Help define our frontend system and component library as we scale
• Elevate the quality of the product through thoughtful details, polish, and user empathy

How You’ll Work

You’ll collaborate with:

• Founders, to understand vision and user context
• Product & Design, to shape intuitive, elegant workflows
• Backend Engineering, to align on data structures and performance

You’ll operate with full ownership: deploy daily, make fast decisions, and always aim for clarity.

What Sets You Up for Success

• 8+ years of experience in frontend development with React (Next.js a strong plus)
• Solid grasp of JavaScript and TypeScript: scoping, closures, context, prototypes, classes, etc.
• Strong understanding of responsive UI, accessibility, and usability principles
• Experience building and testing APIs; comfort with HTTP, Postman, and debugging
• Clear product thinking, eye for polish, and attention to design details
• Pragmatic mindset: you move forward, make calls, and optimize for impact
• Curiosity and autonomy — you dig in, learn fast, and solve problems without waiting

Why You’ll Thrive Here

• You’ll own large parts of the UI in a fast-growing product
• You’ll work closely with experienced founders who value product and engineering equally
• You’ll build systems, not just features — and see your work go live, fast
• You’ll have freedom to do your best work, with a team that moves fast and thinks clearly

Compensation & Benefits

• Base salary: $110K–$175K USD
• Equity: ~$40K+ USD
• Option for B2B or full-time permanent position
• Remote-first setup
• 15 PTO days + 12 public holidays
• Visa sponsorship option for relocation to NYC within 2+ years
• High-trust, high-autonomy team with real ownership

We currently have only one remaining seat for a Senior/Staff Frontend Engineer.

If you're looking to work on meaningful product challenges, ship product incredibly fast, contribute to a clean and ambitious codebase, and help shape how AI becomes usable at scale — we’d love to hear from you.