Senior iOS Developer - Columbus, OH

Senior iOS DeveloperLocation: Columbus, OHPosition Type: ContractUS Citizen, Green Card, TN, GC EAD and H4 EAD only. No third-party agencies corp to corp.Job Description:Skills/Experience:• Strong mobile UI design and implementation experience, including prototyping• Exceptional problem-solving skills and logical thinking.• Strong understanding of quickly changing mobile development landscape.• Strong understanding of RX & traditional programming paradigm.• Deep knowledge on evolving Swift programming language.• Experience on Swift UI & Combine is nice to have.• Understanding of market leading CI & CD solutions.• Expertise in application memory management, identifying and fixing leaks, multithreading, networking & security.• Strong understanding of core algorithms and data structures.• Experience in developing test cases for the code is a must have. Automated test development is a nice to have skill.• Knowledge of A/B testing or persona approaches.• Knowledge of Test Driven Development (TDD) would be a nice to have.• Experience and passion to work in a fast-paced Agile environment, delivering functional features in small time durations.• Comfortable working together as a team in estimating and refining user stories and reasoning the estimation.• Experience in data management including access, cache management etc.• Strong in-depth knowledge in iOS SDK, device APIs, objective C/Swift.• Expertise in developing data driven applications.• Expertise in developing custom widgets with flexibility and reusability in mind• Expertise in Publishing mobile applications to Apple App Store - including packaging, signing, certificate generation & management, iTunes portal access.• Expertise in various data exchange protocols like json, soap, protobuff, etc.• Expertise with different source code versioning strategies including branching, forking and merging.Expertise in different mobile app architectures & patterns