Senior Mobile

ADN Group; Washington (District of Columbia); Hybrid; USD 180,000 - 240,000; Full time

Job summary

A leading technology firm in Washington, DC is looking for a Senior Principal Mobile & Cloud Full-Stack Engineer to design next-generation mobile-first, cloud-native applications. The ideal candidate should possess extensive experience in mobile app development, cloud backend services, and participate in key Agile frameworks. Competitive benefits and a hybrid work model are offered.

Qualifications

• 7+ years in full-stack engineering with mobile and cloud backend expertise.
• Proficiency in Swift, Kotlin, TypeScript, Java (21+), and SQL.
• Advanced knowledge of AWS services like ECS Fargate, Lambda, API Gateway.

Responsibilities

• Build high-performance native apps for iOS and Android.
• Integrate enterprise identity providers using AWS Cognito.
• Create mobile-optimized microservices using Spring Boot or NodeJS.
• Create event-driven workflows using AWS Lambda and cloud databases.

Skills

Full-stack engineering

Native mobile app development

Cloud backend development

Swift

Kotlin

Java/Spring Boot

NodeJS

AWS ECS Fargate

AWS Lambda

CI/CD

Tools

AWS CodePipeline

Terraform

Apache Camel

Cognito

SQS/SNS

Kinesis

Aurora PostgreSQL

DynamoDB

Apache Camel

Kafka

CloudFormation

CDK

Terraform

Bitrise

AWS CodePipeline

Job description

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.