Midlevel Android Engineer

is the world's leading software platform for digital assets. Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. Our engineering team is building technologies that are revolutionizing the financial services industry by empowering millions across the globe.

We are looking for a Mid-level Android engineer to join our growing engineering team, to rapidly create, iterate and launch high-quality software that empowers users all over the world. Ultimately, you should be able to adapt easily to meet the needs of our fast growth and the rapidly evolving crypto ecosystem. Our development team is tackling some of the most interesting problems in the crypto space while rapidly and securely scaling a distributed platform that touches millions of people a day.

• Build & Ship:
  Contribute to our industry-leading Bitcoin and crypto wallet – View on App Store. Write reliable, well-tested Kotlin code, collaborate with senior engineers on architecture decisions, and help guide junior teammates when needed.
• Learn & Grow:
  Deepen expertise through code reviews, architecture discussions, and technical deep‑dives. Own medium‑size features end‑to‑end while sharpening skills in mobile security and crypto.
• Collaborate:
  Work closely with designers, product managers, and other engineers to translate user stories into delightful mobile features.
• Own Features:
  Take full responsibility for feature development—planning, debugging, testing, and releasing to production with an eye toward continuous improvement and scalability.
• Stay Curious:
  Explore the latest tools (Kotlin Coroutines/Flow, Jetpack Compose, Tink, etc.), share insights with the team, and champion best practices.

• 2-5 years of professional Android development experience
• Proficiency in Kotlin (and familiarity with Java)
• Comfort with Android Studio, Jetpack Compose/Views, Gradle, and Git
• Hands‑on experience shipping at least one consumer app to Google Play (internal testing tracks, closed/open testing, production release, Play Console management)
• Solid grasp of asynchronous programming (Coroutines/Flow/RxJava) and common architectural patterns (MVVM/MVI)
• Commitment to unit testing and automated CI/CD pipelines
• A growth mindset—you actively seek feedback, iterate rapidly and push yourself to improve
• Clear communication skills and enjoyment of working in diverse, distributed teams

• Experience mentoring or pairing with junior engineers
• Personal interest in crypto or fintech
• Knowledge of advanced app‑security or cryptography concepts
• Familiarity with automated UI‑testing frameworks (Maestro)
• An app or project in Google Play or on Git Hub you can demo
• Exposure to performance profiling and memory‑management tools

Mentorship First:
Regular 1-on-1s, peer design reviews, and open architecture forums help everyone level up. Quality Matters:
We test thoroughly, automate where it counts, and never compromise user trust. Iterate Rapidly:
Small, safe releases get real features into millions of hands—fast. Global Mindset:
Our team spans the globe; clear communication and async collaboration are core skills.

Full‑time salary based on experience and meaningful equity in an industry‑leading company. This is a hybrid role based in our Paris office, with a mandatory in‑office presence three days per week. Work from Anywhere Policy:
You can work remotely from anywhere in the world for up to 20 days per year. Budgets for learning & professional development. Unlimited vacation policy; work hard and take time when you need it. Apple equipment. The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an emerging field. Flexible work culture.

Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation,…