Software Engineer, Android

Blockstream was founded in 2014 by Dr. Adam Back and a group of fellow cryptographers and engineers who were passionate about Bitcoin and its potential to change the future of finance. Focusing on building fundamental Bitcoin infrastructure, Blockstream quickly became one of the industry's leading technology powerhouses.

Blockstream is transforming traditional financial systems by equipping enterprises and consumers with Bitcoin-based solutions that enhance efficiency, security, and scalability. Our vision is to empower the world with tools that strengthen financial security, streamline everyday use, and unlock new opportunities for growth. 

In pursuit of our expansive vision, we’ve built a full stack of innovative products on top of the Bitcoin protocol, from layer-2 projects like Liquid and Core Lightning, to end-user software and hardware wallets like Green and Jade. Our brand stands for innovation in the Bitcoin community, and we’re growing our team to accelerate the future.

We are seeking an experienced Software Engineer, Android to join our mobile development team. In this role, you'll be responsible for designing, building, and maintaining innovative Android applications that interact with Bitcoin, Lightning and Liquid network. The ideal candidate will have deep expertise with modern Android development practices, Jetpack Compose, and a passion for creating secure, user-friendly financial applications.

What You Will Be Doing (Responsibilities):

• Develop and maintain Android applications using Kotlin, Jetpack Compose, and Compose Multiplatform.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Optimize application performance, quality, and responsiveness.
• Identify and resolve bottlenecks, bugs, and stability issues.
• Maintain high code quality, organization, and automation.
• Implement security best practices for Bitcoin and financial applications.

What We Look For In You (Required Qualifications):

• 5+ years of professional Android development experience.
• Strong proficiency in Kotlin.
• 1-2 years experience with Jetpack Compose and Compose Multiplatform.
• Knowledge of code versioning tools (Git).
• Track record of success developing & launching consumer-facing apps with emphasis on user experience and performance.

Nice To Haves (Preferred Qualifications):

• Experience integrating native libraries in Kotlin.
• Solid understanding of the Android application lifecycle.
• Experience developing Bitcoin or payment applications.
• Understanding of Bitcoin technology or financial systems.
• Familiarity with cryptographic principles and secure coding practices.
• Experience with C++ or Rust.
• Knowledge of CI/CD pipelines and deployment processes.