Senior Staff Frontend Engineer

DualEntry; Remote; PLN 364,000; Full time

Job summary

A leading AI startup is looking for a Senior/Staff Frontend Engineer in Poland to enhance their product velocity and lead development of their innovative accounting platform. This hands-on role requires 8+ years of frontend experience, particularly with React and Next.js. You'll collaborate closely with founders and product teams in a remote-first environment, where your contributions have a direct impact on the product and customer experience. Enjoy equity options, generous PTO, and a high-trust culture.

Benefits

Equity ownership

15 PTO days + 12 public holidays

Remote-first setup

Visa sponsorship option for relocation

Qualifications

• 8+ years of frontend development experience, particularly with React.
• Strong understanding of UI, accessibility, and usability principles.
• Experience building and testing APIs.
• Clear product thinking and attention to design details.
• Pragmatic mindset: ability to make effective decisions.
• Curiosity and autonomy to solve problems without waiting.

Responsibilities

• Build, ship, and own major parts of the product UI.
• Design interactive experiences for complex workflows.
• Ensure seamless integration between product, design, and backend.
• Help define the frontend system and component library.
• Elevate product quality through user empathy and details.

Skills

JavaScript

React

TypeScript

Next.js

Jest

AWS tools

Git

Github

Agile methodologies

Tools

Postman

Linear

Notion

Job description

Founded in 2024, DualEntry is one of NYC’s fastest-growing AI startups.

DualEntry is changing the future of finance. Our AI-native ERP lets teams achieve more in less time. $5M-ARR businesses and NYSE-listed companies trust DualEntry to automate away busywork and fuel their growth with powerful reporting and insights. We’re making the one-person finance team a reality and putting the pain of legacy ERPs from the 1990s in the past.

We operate with urgency and ownership. We move fast.

Why This Role Matters Now

Since launching 18 months ago, we’ve raised $100M with backing from Lightspeed, Khosla, and Google Ventures. We got there by moving incredibly fast and hiring the best and brightest talent.

To accelerate that momentum, we’re growing our team. Come and join us at one of NYC’s fastest-growing startups and have an impact on our product from day one.

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

This is an intense, hands-on role with full ownership.

You’ll be joining at an early and defining moment. Your work will directly shape our product, customers, and trajectory.

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

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)
• 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

• Significant equity ownership in one of the top AI companies in the world
• You’re joining early and will grow with DualEntry
• Your feedback shapes the product directly
• High-speed culture
• High-trust environment with high expectations
• Ambitious mission
• 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, contribute to a clean and ambitious codebase, and help shape how AI becomes usable at scale, we’d love to hear from you.

Requirements

• JavaScript
• React
• TypeScript
• Next. js
• Jest
• AWS tools
• Linear
• Notion
• Git
• Github
• Agile
• Equity, Start-up environment