Senior Typescript Engineer (Wallet Experience) - FinTech / Crypto

Hey! Nice to see you!

At Incubly, we believe that great people want to work with great people, so we started to build a company that will attract great minds and that we can achieve everything not by feeling that we work, but just having fun. Our mission is to mainly support tech companies and startups (scaleups) in fast and high-quality scale-up of their teams and boost their product development, testing, and deployment; so, we can succeed together.

We are currently working with a French company which is a leader in security and infrastructure solutions for cryptocurrencies and blockchain applications. It has a team of more than 400 professionals developing a variety of products and services to safeguard cryptocurrency assets, including worldwide leading hardware wallets.

As a Senior Typescript Engineer, you will join an international team responsible for developing and maintaining Ledger Live, our application for managing blockchain-backed assets. You will take ownership of building and optimizing the portfolio and account management UI flows, collaborate closely with other developers and hardware engineers, and contribute to delivering a reliable, secure, and user-friendly experience across web and mobile platforms.

Your daily responsibilities

• Contribute within a modern AI-enabled engineering workflow utilizing tools such as Claude Code, Cursor, and Gemini
• Own the technical development of Ledger Live on desktop and mobile platforms
• Drive improvements and propose smart, scalable technical solutions
• Build features following best practices, from unit tests to end-to-end testing
• Ensure the quality, performance, and consistency of our UI/UX framework
• Participate in code reviews and help maintain high standards across the codebase
• Mentor colleagues, encouraging growth and fostering a culture of technical excellence
• Contribute 100% to open-source projects within ledger-live monorepo

We need you to have

• Minimum 5 years of experience in software development
• A curious mindset and positive attitude, ready to thrive in a highly collaborative team
• Proficient in JavaScript and TypeScript
• Strong experience in React.js development, including relevant tools and libraries
• Experience with React Native and/or Electron
• Solid understanding of testing strategies
• Good knowledge of UI/UX best practices in software development
• Professional fluency in English

Would be great if you have

• Experience in Web3 topics and technical stack.
• Experience in maintaining a library of shared components.
• Experience with module federation & repack

Our offer

In addition to great company and challenging projects, we can offer much much more, i.e.

• Agile and friendly atmosphere, non-violent communication, and full respect for diversity
• Possibility to choose from onsite (in Lodz, Poland) or hybrid work (2-3 days a week in our office in Łódź city centre). Business trips to Paris as needed, typically once every three months
• Remuneration on B2B: 1300- 1500 zł net/ MD