Frontend Engineer (React, Mid-Level)

DualEntry; Polska; Remote; PLN 255,000 - 530,000; Full time

Job summary

A fast-growing AI startup is seeking a Frontend Developer to enhance its product UI using React. The ideal candidate will have over 5 years of experience and an interest in delivering high-quality user experiences. This position allows for remote work with flexible hours, competitive compensation, and equity options. You'll collaborate closely with a talented team to build an AI-powered accounting platform, contributing to impactful product development.

Benefits

Equity options

15 PTO days

12 public holidays

Visa sponsorship option

Qualifications

• 5+ years of experience in frontend development with React (Next.js a strong plus).
• Strong understanding of responsive UI, accessibility, and usability principles.
• Experience building and testing APIs; comfort with HTTP, Postman, and debugging.

Responsibilities

• 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 teams to ensure seamless integration.

Skills

Frontend development

React

API testing

Responsive UI

Usability principles

Job description

• 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: $70k-$145k USD base + $40k USD equity ($110k-$185k USD total)
• Raised $90M Series A from Lightspeed, Khosla and Google Ventures
• Remote with in-person meetups & daily New York EST timezone overlap
• Founders built & exited prior company at $100M ARR and 300+ people

Why This Role Matters Now

We’re growing our Engineering team and hiring our next 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.

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building a category-defining SaaS product to automate and modernize enterprise accounting - one of the most painful and outdated workflows in finance.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 (HQ in NYC)

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
• Help define our frontend system and component library as we scale
• Elevate the quality of the product through thoughtful details, polish, and user empathy

What Sets You Up for Success

• 5+ years of experience in frontend development with React (Next.js a strong plus)
• 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

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 have freedom to do your best work, with a team that moves fast and thinks clearly
• 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

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.

Frontend Developer - HTML-coder – Middle