AWS Developer

We are seeking an AWS Developer for a contract position based in Malvern, Pennsylvania. This role focuses on backend service layer development, building interfaces between upstream data systems and frontend components. The engagement is expected to last 6+ months.

Responsibilities

• Develop and maintain service layer components using Node.js and TypeScript
• Design and implement REST APIs with OpenAPI/Swagger specifications
• Build and deploy serverless and containerized applications on AWS (Lambda, ECS, API Gateway)
• Write infrastructure-as-code using CloudFormation
• Implement and maintain Jest unit tests, working toward and sustaining 100% coverage gates
• Manage secrets and security configurations using AWS Secrets Manager and IAM
• Store and retrieve data using S3
• Collaborate using Git feature-branch and pull-request workflows with CI gates

Qualifications

• Required

• 5+ years of backend development experience

• Node.js and TypeScript as primary development languages

• NestJS or comparable dependency injection framework (Spring Boot experience is transferable)

• REST API design with OpenAPI/Swagger

• AWS services: Lambda, API Gateway, S3, ECS, and Secrets Manager

• CloudFormation or infrastructure-as-code experience

• Jest unit testing with ability to sustain 100% coverage gates

• Git feature-branch and pull-request workflow with CI gate experience

• Preferred

• Authoring and versioning internal npm packages against a plugin interface

• Playwright for end-to-end testing

• Stryker mutation testing

• Feature flag implementations (Gatekeeper or similar)

• OpenTelemetry and distributed tracing (Honeycomb, Splunk)

• Fastify framework

• Redis

• JWT authentication

• Brokerage domain experience: order routing, trade execution, cost basis

• Client experience and Dexter tooling