Sr. Full-Stack Mobile

Role:
Sr. Full-Stack Mobile & Cloud Engineer (Native iOS/Android + AWS/Azure BFF)
Location:
Washington, DC (Hybrid)
Duration:
Long term
Important Note

• We have shifted to adopting SAFe and
• Encourage Contractors trained in SAFe
• Request that contractors have camera available and on majority of the time
• Set expectations that they are part of Agile team on which we need them to embrace self-management and self-organization in terms of their iteration commitments, capacity planning, capacity allocation, etc.
• As long as they can come DC on need basis and attend the important SAFe ceremonies like PI onsite.

Overview
Amtrak Digital Technology is seeking a Senior Full-Stack Mobile & Cloud Engineer experienced in designing and developing native iOS and Android applications that interface with modern AWS and Azure-based back-end architectures. This role focuses on delivering mobile-first, cloud-native solutions that power the next generation of Amtrak's operational and passenger applications for conductors, onboard staff, and customer service agents. The ideal candidate combines hands-on experience with Swift/SwiftUI, Kotlin/Jetpack Compose, and AngularJS/Angular front-end development with experience in AWS ECS Fargate, Lambda, Aurora PostgreSQL, and Back-End for Front-End (BFF) frameworks such as Spring Boot, NodeJS, and Apache Camel.

Key Responsibilities
Mobile App Development (iOS & Android)

• Design and develop native iOS (Swift, SwiftUI) and Android (Kotlin, Jetpack Compose) applications.
• Integrate with AWS Cognito User & Device Pools, MSAL (Azure AD), and enterprise SSO.
• Implement peer-to-peer communication APIs (MultipeerConnectivity, Nearby Connections).
• Build indoor wayfinding experiences using CoreLocation, iBeacon, ARKit (iOS) and ARCore (Android).
• Extend functionality to Apple Watch and Wear OS devices using SwiftUI and Compose frameworks.
• Leverage BNNS (Basic Neural Network Subroutines) and Android NNAPI for on-device intelligence.

BFF (Back-End for Front-End) Architecture

• Architect and develop BFF microservices using Spring Boot (Java 21+) or NodeJS (22+) running on AWS ECS Fargate.
• Shape and aggregate data from multiple sources (MQ, MuleSoft, Oracle, SQL Server, DataBricks) into mobile-optimized JSON APIs.
• Use GraphQL, REST, or AppSync patterns to deliver adaptive payloads to client apps.
• Implement Apache Camel for routing, transformation, and integration with Kafka, Kinesis, SQS, and SNS.
• Manage API versioning, schema evolution, and delta synchronization optimized for low-bandwidth environments.

Cloud and Data Integration

• Build and maintain AWS Lambda (NodeJS & Java) microservices for real-time and event-driven workflows.
• Work with Aurora PostgreSQL, DynamoDB, and Redis for hybrid persistence and caching layers.
• Develop streaming integrations using AWS Kinesis and Kafka for event ingestion.
• Design secure, observable, and scalable cloud architectures using AWS CloudWatch, CloudTrail, and X-Ray.

DevOps & CI/CD- Implement automated build and deployment pipelines using AWS CodeBuild, CodeDeploy, CodePipeline, and Bitrise for native iOS and Android.

• Manage container orchestration on AWS ECS Fargate.
• Define and monitor CloudFormation/CDK or Terraform infrastructure as code.
• Apply continuous integration and delivery practices aligned with Amtrak's enterprise DevSecOps standards.
• Experience with Dynatrace for end-to-end application monitoring (nice to have).

Agile / SAFe Collaboration

• Operate within a SAFe Agile framework, contributing to PI Planning, backlog grooming, sprint execution, and retrospectives.
• Collaborate with Product Owners, Architects, and Middleware teams to ensure alignment between mobile UX and backend capabilities.
• Participate in technical design reviews, security assessments, and architecture councils.

Required Technical Skills

• Languages: Swift, Kotlin, TypeScript, Java 21+, NodeJS 22+, SQL/PLpgSQL
• Frameworks: SwiftUI, Jetpack Compose, Spring Boot, ExpressJS/NestJS, AngularJS/Angular
• Cloud Services: AWS ECS Fargate, Lambda, API Gateway, Cognito, SQS/SNS, Kinesis, Redis, Aurora PostgreSQL, DynamoDB, CloudWatch, CloudTrail, Azure AD/MSAL
• Integration: Apache Camel, Kafka, MuleSoft, REST, GraphQL, AppSync
• DevOps: AWS CodeDeploy, CodePipeline, CloudFormation/CDK, Bitrise, GitHub Actions, Azure DevOps, Dynatrace (nice to have)
• Tools: JIRA, Confluence, XRay, GitHub Enterprise, Postman, Docker

Required Experience

• Experience integrating mobile apps with real-time operational systems (e.g., seat reservations, onboard data capture, safety/aware systems).
• Proven ability to bridge mobile UI with complex enterprise middleware (AWS/Azure/MuleSoft).
• Familiarity with Intune MDM and enterprise mobility management (eMD device management).
• Experience with P2P, offline-first, and low-latency design patterns for mobile field operations.
• Strong understanding of AWS and Azure hybrid cloud interoperability.Soft Skills & Mindset
• Strategic, mobile-first thinker with a passion for cloud innovation and modern DevOps.
• Collaborative and adaptable thrives in large, multi-disciplinary Agile programs.
• Detail-oriented and proactive in identifying risks, optimizations, and scalability opportunities.
• Clear communicator capable of translating technical designs into actionable user stories and deliverables.