iOS Developer

Ethereum Technologies LLC; McLean (VA); On-site; USD 90,000 - 150,000; Full time

Job summary

Ethereum Technologies in McLean, VA is seeking a Mobile Application Developer (Android and/or iOS) to design, build, and maintain high-quality mobile apps. You will partner with product, design, and backend teams to deliver secure, performant, and user-friendly experiences across mobile devices.

The role requires strong mobile development experience on Android or iOS, familiarity with RESTful APIs, and collaboration in Agile environments.

Qualifications

• Proven mobile development experience on Android and/or iOS.
• Experience consuming RESTful APIs and integrating data.
• Ability to optimize performance and debug across platforms.
• Familiarity with secure storage and privacy-minded implementation.

Responsibilities

• Design, build, test, and maintain Android and/or iOS apps.
• Collaborate with product, design, and backend teams to ship new features.
• Integrate APIs and ensure data reliability and app performance.
• Participate in code reviews and follow engineering best practices.

Skills

Android Kotlin/Java

iOS Swift/Obj-C

RESTful APIs

Agile teamwork

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

We are looking for a Mobile Application Developer (Android and/or iOS) to design, build, and maintain high-quality mobile apps. You'll partner with product, design, and backend teams to deliver secure, performant, user-friendly experiences across mobile devices.

Responsibilities

• Design, develop, test, and maintain mobile applications for Android and/or iOS.
• Collaborate with cross-functional teams to define, design, and ship new features on a regular release cadence.
• Integrate APIs and external data sources; ensure reliable data handling and app performance.
• Troubleshoot, debug, and improve existing functionality; participate in code reviews and follow engineering best practices.

Required qualifications

• Strong mobile development experience: Android (Kotlin/Java) and/or iOS (Swift/Objective-C).
• Experience with mobile app architecture, debugging, and performance optimization.
• Familiarity with consuming RESTful APIs and collaborating in Agile teams.

Preferred skills

• Testing and quality practices: unit/integration testing and CI for stable releases.
• Android: Android Studio, Android SDK, lifecycle components; iOS: key iOS frameworks and App Store readiness.
• Experience building secure apps (authentication, secure storage, privacy-minded implementation)

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.