Senior Mobile

Job Title: Senior Mobile & Cloud Full-Stack Engineer Location: Washington, DC (Hybrid – Onsite presence required) Work Type: Hybrid Client: Amtrak Note: No H1B for this position Position Overview Client, in partnership with a leading transportation client, is seeking a Senior Principal Mobile & Cloud Full-Stack Engineer to design and develop next-generation, mobile-first, cloud-native applications supporting both operational and passenger systems. This is a high-impact hybrid role based in Washington, DC, requiring expertise across native mobile app development (iOS/Android) and cloud backend (AWS-based microservices). The ideal candidate will have deep experience with Swift, Kotlin, Java/Spring Boot, NodeJS, AWS ECS Fargate, and Lambda. The role operates within a SAFe Agile framework, involving collaboration across product, architecture, and middleware teams, and participation in key SAFe ceremonies (e.g., PI Planning). Key Responsibilities Mobile Development: Build high-performance native apps for iOS (Swift/SwiftUI) and Android (Kotlin/Jetpack Compose), including Apple Watch and Wear OS integrations. Security & Authentication: Integrate enterprise identity providers using AWS Cognito, MSAL (Azure AD), and other SSO tools. Edge Computing & Offline-First: Develop features using CoreLocation/ARKit, BNNS/NNAPI, and P2P APIs to support low-bandwidth or offline environments. Backend for Frontend (BFF) Architecture: Build mobile-optimized microservices using Spring Boot (Java 21+) or NodeJS (22+) on AWS ECS Fargate. Data Integration: Aggregate data from enterprise sources (MuleSoft, Oracle, SQL Server) into mobile APIs using REST, GraphQL, or AppSync. Cloud Microservices: Create event-driven workflows using AWS Lambda, with hybrid persistence layers (Aurora PostgreSQL, DynamoDB, Redis). Enterprise Integration: Implement routing and messaging logic via Apache Camel, Kafka, Kinesis, SQS, and SNS. DevOps & CI/CD: Manage build/deployment pipelines with AWS CodePipeline and Bitrise; define IaC with CloudFormation/CDK or Terraform. Agile Collaboration: Participate in SAFe ceremonies, PI Planning, and cross-functional collaboration. Monitoring & Observability: Develop secure, observable architectures leveraging AWS CloudWatch, CloudTrail, X-Ray, and Dynatrace. Required Qualifications Experience: 7+ years in full-stack engineering with expertise in native mobile and cloud backend development. Languages & Frameworks: Proficiency in Swift, Kotlin, TypeScript, Java (21+), and SQL; strong knowledge of SwiftUI, Jetpack Compose, Spring Boot, and ExpressJS/NestJS. Cloud Skills: Advanced experience with AWS ECS Fargate, Lambda, API Gateway, Cognito, SQS/SNS, Kinesis, Aurora PostgreSQL, DynamoDB. Integration: Hands-on experience with Apache Camel and event streaming (Kafka/Kinesis). DevOps/IaC: Proficiency with CI/CD tools (Bitrise, AWS CodePipeline) and IaC frameworks (CloudFormation, CDK, Terraform). Agile Methodology: Experience in SAFe or large-scale Agile environments. Preferred Skills Familiarity with Intune MDM and enterprise mobility management. Experience designing low-latency, offline-first mobile applications. Strong communication, collaboration, and problem-solving abilities. Strategic, mobile-first mindset and self-organized approach.