Key skills
AWS Certified Developer AssociateAWS SQSAWS SNSAWS LambdaAWS S3AWS API GatewayAWS EventBridgeAWS DynamoDBAWS ECSAWS EKSAWS CloudWatchBackend development with .NET/C#Backend development with GoBackend development with PythonBackend development with JavaBackend development with Node.jsCloud-native API designEvent-driven workflowsAsynchronous messagingDistributed system designHealthcare EDI transaction processingJSONXMLUnit testing with JUnitUnit testing with xUnitUnit testing with JestUnit testing with pytestGitGitHubAgile methodologiesAwareness of AI limitationsPythonJavaC#CGo.NETAINode.jsJestPytestJUnitIntegration TestingAWSECSEKSLambdaS3DynamoDBCloudWatchSNSSQSAPI GatewayRESTfulAgileScrumKanbanCI/CD
About this role
Elios is hiring a Senior Software Engineer for AWS cloud application development on a major federal healthcare modernization program. The role focuses on building cloud-native application services, APIs, and integrations within an AWS-hosted ecosystem that processes healthcare transactions at scale.
Responsibilities:
- Design, build, and maintain RESTful APIs and backend services that retrieve, transform, and serve healthcare EDI and transactional data
- Build cloud-native services and integrations inside an AWS-hosted environment
- Design event-driven and asynchronous workflows using AWS-managed services and messaging patterns
- Integrate with internal platform APIs, EDI processing pipelines, and cloud data services to deliver live and historical transaction data
- Develop integrations across SQS, SNS, Lambda, S3, EventBridge, API Gateway, DynamoDB, and ECS/EKS
- Write clean, tested, well-documented code and participate actively in peer code review
- Apply unit and integration testing across backend services and API layers
- Use Git and GitHub for branching, pull requests, and collaborative development
Requirements:
- 8+ years of software development experience, mostly backend, with cloud-native AWS work in production
- Backend fluency in one or more of .NET/C#, Go, Python, Java, or Node.js
- Strong understanding of AWS application integration patterns (async messaging, event-driven workflows, API integrations, managed service interactions)
- Hands-on with SQS, SNS, Lambda, S3, API Gateway, EventBridge, DynamoDB, ECS/EKS, and CloudWatch
- Experience designing cloud-native APIs and distributed integrations
- Bachelor's or Master's in Computer Science, Engineering, or a related technical discipline (equivalent practical experience considered)
- Experience consuming and transforming JSON, XML, and EDI transactions in application code
- Direct experience with healthcare EDI formats and transaction processing workflows
- Familiarity with distributed-system concepts: retries, idempotency, async processing, fault tolerance, service resiliency
- Unit and integration testing with JUnit, xUnit, Jest, pytest, or equivalents
- Git/GitHub collaborative development
- Agile delivery (Scrum, Kanban, SAFe, or similar)
- Strong attention to detail around healthcare data accuracy and fidelity
- Sound judgment for when AI-assisted code generation fits and when manual engineering review, security review, or deeper analysis is required
- Awareness of the limitations, risks, and verification requirements that come with AI-generated code in regulated environments
- AWS Certified Developer Associate
- US Citizenship required, with the ability to obtain and maintain a Public Trust clearance
- Healthcare payer/PBM systems, clearinghouses, or pharmacy operations
- Federal healthcare systems, claim attachment workflows (X12 275), or related transaction types
- HIPAA compliance for APIs and healthcare applications
- Containerized application development
- CI/CD workflows and automated testing pipelines