Senior Mobile Engineer (Android)

1inch; Germany (OH); Remote; USD 80,000 - 100,000; Full time

Job summary

A leading DeFi ecosystem is seeking a Senior Android Developer to join their team for the 1inch Wallet. This role involves building new features and ensuring a secure user experience. The ideal candidate should have extensive Android development experience, particularly with Kotlin, and familiarity with Web3. Competitive pay and unlimited vacation are offered.

Benefits

Unlimited vacation days

Fully compensated work gear

Annual team retreat

Qualifications

• 5+ years of professional Android development experience.
• Strong knowledge of Kotlin and Android SDK.
• Experience building and shipping complex Android apps.

Responsibilities

• Build and maintain features in the 1inch Wallet.
• Write clean, testable Kotlin code.
• Implement crypto-specific flows.

Skills

Android development

Kotlin

Web3 integration

Mobile app architecture

Git

Tools

Android SDK

Jetpack libraries

CI/CD

Job description

1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets - with the self-custody, comprehensive security and the intuitive user experience they need to unlock the potential of true crypto ownership. 1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond.

So if you’re someone who thinks big, moves fast and wants to make an impact right from day one, then get ready to join our industry-changing team.

Location: We hire with a focus on Dubai and Europe. For this role, we prefer candidates who are either based in Dubai or working remotely within +/- 4 hours GST time.

We’re looking for a Senior Android Developer to join the team behind the 1inch Wallet — a non-custodial crypto wallet used by hundreds of thousands of people around the world. You’ll help us build new features, improve performance, and ensure a secure, smooth user experience.

You’ll collaborate with product managers, designers, backend developers, and QA to deliver features from idea to release. We keep our processes lightweight and communication clear. We value engineers who take ownership, write clean code, and enjoy learning new things.

This is a high-impact role where your contributions will be immediately visible to users and will help shape one of the most advanced crypto wallets in the industry.

Responsibilities:

• Build and maintain features in the 1inch Wallet
• Write clean, testable Kotlin code
• Web3 Integration
• Work with blockchain APIs and secure key handling
• Implement crypto-specific flows (e.g. swaps, signing)
• Work with design, backend, and QA to ship features
• Participate in planning, code reviews, and releases
• Ensure performance, stability, and test coverage
• Contribute to architecture and tech improvements

Requirements

• 5+ years of professional Android development experience
• Strong knowledge of Kotlin and Android SDK
• Experience building and shipping complex Android apps
• Familiarity with Jetpack libraries (Navigation, ViewModel, etc.)
• Understanding of mobile app architecture and clean code principles
• Experience with Git, CI/CD, and code reviews
• Good testing practices (unit, integration, or UI testing)
• Proactive mindset, ownership, and strong communication skills

Nice to have:

• Experience with Jetpack Compose
• Understanding of Web3, crypto wallets, or blockchain APIs

Why work with us?

• Join a dynamic, creative team in a fast-paced and supportive environment
• Innovation and Collaboration in web3 tech are core to our success
• We’re open to new ideas— if you’ve got a vision, pitch it and make it happen
• Enjoy competitive pay that matches your skills and experience
• Be part of a company that’s shaping the future of DeFi
• Take time when you need it — we offer unlimited vacation days
• Get fully compensated for your work gear— we’ll set you up for success
• Travel with us! We host an annual team retreat at a top international location