Senior iOS Developer

We are looking for a Senior iOS Developer to join a highly specialized engineering team building next-generation secure frameworks. This is not a standard UI-focused mobile app role. Instead, you will dive deep into the architectural foundation of iOS, creating robust, modular SDKs and working closely with hardware-level communication. If you thrive on solving complex engineering puzzles, implementing advanced cryptographic protocols, and manipulating bytes and bits to create bulletproof digital solutions, this is the perfect challenge for you.

Responsibilities:

• SDK Development: Design and build modular SDK architectures and distribute them using XCFrameworks / binary frameworks.

• Low-Level Programming: Perform low-level protocol programming, dealing directly with bytes and bits for secure software-to-hardware communication.

• Hardware Integration: Implement and maintain advanced NFC capabilities and secure proximity-based interactions.

• Security & Cryptography: Integrate strong cryptography (AES, EC, RSA) and apply advanced security measures, including code obfuscation, anti-tampering, and runtime checks (e.g., time validation).

• API Integration: Develop robust REST API clients for secure, encrypted backend communication.

• Testing & Quality: Write comprehensive unit tests and collaborate on cross-platform integration testing using Java and Cucumber.

• CI/CD Automation: Build, maintain, and optimize automated delivery pipelines using Jenkins and Bitrise.

Min requirements:

• Core iOS: Deep expertise in Swift and Objective-C using Xcode.

• Low-Level Skills: Proven hands-on experience with low-level programming (bytes and bits manipulation).

• Security/Crypto: Strong practical knowledge of cryptographic algorithms (AES, EC, RSA) and secure data transmission protocols.

• NFC: Practical experience working with iOS NFC frameworks and device-level communication.

• Architecture: Strong understanding of modular architecture and the distribution of binary frameworks (XCFrameworks).

• Automation: Solid experience configuring and maintaining CI/CD pipelines (Jenkins or Bitrise).

• Testing: A strong habit of writing unit tests and maintaining high code coverage.

• Networking: Extensive experience in REST API client development.

Would be a plus:

• Background in developing highly secure, regulated, or compliance-driven applications (where security and data integrity are top priorities).

• Experience with integration testing using Java + Cucumber.

• Familiarity with build automation tools like Maven.

• Advanced knowledge of advanced iOS app obfuscation and reverse-engineering prevention.

We offer:

• Opportunity to work on bleeding-edge projects

• Work with a highly motivated and dedicated team

• Competitive salary

• Flexible schedule

• Benefits package - medical insurance, sports

• Corporate social events

• Professional development opportunities

• Well-equipped office

About us:

Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.