iOS Developer

Integration International Inc.; Washington (District of Columbia); Hybrid; USD 140,000 - 210,000; Full time

Job summary

Integration International Inc. seeks a Senior IT Applications Solution Architect to design, develop, and support enterprise-grade mobile apps with native iOS focus and AWS backend integration.

The role emphasizes offline-first architectures, secure OAuth/OIDC authentication, and collaboration with backend teams, delivering scalable mobile solutions for frontline operations.

Hybrid schedule in Washington, DC with onsite attendance for key ceremonies and meetings is required.

Qualifications

• Strong experience in native iOS development using Swift and Objective-C.
• Experience with AWS services such as API Gateway, Lambda, and ECS Fargate.
• Knowledge of REST APIs, OAuth/OIDC authentication, and secure mobile integrations.
• Experience with offline-first architecture, local data storage, transaction management, and synchronization.
• Understanding of mobile application performance, security, and scalable architecture.

Responsibilities

• Design, develop, and maintain native iOS applications using Swift and Objective-C.
• Build mobile features for ticket scanning, passenger information, manifest presentation, check-in, and transaction management.
• Implement offline-first capabilities, local data storage, transaction queues, synchronization, and conflict resolution.
• Integrate iOS applications with REST APIs, AWS services, and backend platforms using secure OAuth/OIDC authentication.
• Develop reusable, configuration-driven UI components, forms, surveys, and feature-flagged functionality.
• Optimize application performance, accessibility, crash resilience, and usability across supported iPhone and iPad devices.
• Implement mobile application monitoring and performance tracking using Dynatrace Mobile RUM.
• Collaborate with backend engineering teams on API integrations, contract testing, data synchronization, and application architecture.

Skills

Swift

Objective-C

AWS

REST APIs

OAuth/OIDC

Offline-first

Security

Performance

Job description

We're Hiring: IT Applications Solution Architect – Senior (Full Stack | Native iOS & AWS)

Location: Washington, DC (Hybrid – Not 100% Remote)

Open Positions: 3

Work Model: Hybrid, with onsite attendance required for important team ceremonies and meetings.

We are looking for an experienced Senior IT Applications Solution Architect with strong expertise in native iOS application development and AWS cloud services to design, develop, and support enterprise-grade mobile applications.

The ideal candidate will have experience building reliable, secure, and scalable mobile solutions, particularly for frontline operational workflows requiring offline capabilities and seamless backend integration.

Key Responsibilities:

• Design, develop, and maintain native iOS applications using Swift and Objective-C.
• Build mobile features for ticket scanning, passenger information, manifest presentation, check-in, and transaction management.
• Implement offline-first capabilities, local data storage, transaction queues, synchronization, and conflict resolution.
• Integrate iOS applications with REST APIs, AWS services, and backend platforms using secure OAuth/OIDC authentication.
• Develop reusable, configuration-driven UI components, forms, surveys, and feature-flagged functionality.
• Optimize application performance, accessibility, crash resilience, and usability across supported iPhone and iPad devices.
• Implement mobile application monitoring and performance tracking using Dynatrace Mobile RUM.
• Collaborate with backend engineering teams on API integrations, contract testing, data synchronization, and application architecture.

Required Technical Skills:

• Strong experience in native iOS development using Swift and Objective-C.
• Experience with AWS services such as API Gateway, Lambda, and ECS Fargate.
• Knowledge of REST APIs, OAuth/OIDC authentication, and secure mobile integrations.
• Experience with offline-first architecture, local data storage, transaction management, and synchronization.
• Understanding of mobile application performance, security, and scalable architecture.

Preferred / Nice-to-Have Skills:

• Experience with Ditto / Infinite PeerConnect or other peer-to-peer synchronization technologies.
• Hands-on experience with Core Data, Bluetooth peripherals, and barcode scanning hardware.
• Experience with Dynatrace Mobile RUM and application performance monitoring.
• Knowledge of VoiceOver, accessibility, App Intents/Shortcuts, and enterprise MDM deployment.
• Experience in transportation, reservation systems, retail ticketing, or other high-availability operational applications.
• SAFe training or experience working in a SAFe environment is preferred.
• Ability to work effectively in a self-managed and self-organizing Agile team.
• Participate in iteration planning, capacity planning, and team commitments.
• Keep the camera available and switched on during most virtual meetings.
• Must be available to travel to Washington, DC, as needed, for important SAFe ceremonies, including PI Planning.

Important:

This is a hybrid opportunity and is not fully remote. Candidates must be comfortable with occasional onsite participation in Washington, DC.