Senior iOS Developer (Remote OK, Onsite DC) AWS/Dynatrace

Infojini Inc; Washington (District of Columbia); Hybrid; USD 120,000 - 190,000; Full time

Job summary

Infojini Inc. is seeking a Sr. Native iOS Mobile Application Developer with AWS and Dynatrace experience in Washington, DC. The role involves building and supporting frontline iOS applications and their cloud services, focusing on reliable passenger workflows and secure mobile integrations.

You will implement offline-first data handling, peer-to-peer synchronization, and reusable UI components, while collaborating with backend teams to ensure API consistency and performance across devices.

Qualifications

• Proficiency in native iOS development with Swift and Objective-C.
• Experience with AWS API Gateway, Lambda, ECS Fargate, Cognito or similar services.
• Dynatrace RUM and accessibility testing experience.
• Experience with offline-first data handling and Core Data.

Responsibilities

• Develop and maintain native iOS features using Swift and Objective-C.
• Implement ticket scanning, passenger/manifest presentation, and safe transaction-state transitions.
• Maintain offline data storage, queues, conflict handling, and peer-to-peer sync patterns such as Ditto/Infinite PeerConnect.
• Integrate iOS clients with REST APIs using OAuth/OIDC and secure storage.
• Create reusable JSON/configuration-driven UI elements and feature-flagged behaviors.
• Improve performance, accessibility, and crash resilience on supported devices.
• Instrument workflows with Dynatrace mobile RUM and telemetry.
• Collaborate with backend teams on API evolution and data models.

Skills

Swift/Obj-C

AWS API Gateway

Dynatrace RUM

OAuth/OIDC REST

Tools

Core Data

Bluetooth/barcode hardware

MDM deployment

REST APIs

Job description

Infojini Inc. is seeking a Sr. Native iOS Mobile Application Developer with AWS and Dynatrace experience in Washington, DC. The role involves building and supporting frontline iOS applications and their cloud services, focusing on reliable passenger workflows and secure mobile integrations.

You will implement offline-first data handling, peer-to-peer synchronization, and reusable UI components, while collaborating with backend teams to ensure API consistency and performance across devices.