Frontend Software Developer Engineer

Job Description: Design and build scalable, serverless, and event-driven applications on AWS for Client Business's multi-account commerce platform. Responsible for developing mission-critical backend services, APIs, database schemas, business logic orchestration, and frontend components that enable enterprise customers to share negotiated pricing across account networks. Key Responsibilities: Build event-driven orchestration workflows (AWS Step Functions, Lambda, Fargate) Implement RESTful APIs for segment membership, agreement provisioning, and membership management Build React/TypeScript frontend components for internal tooling Write comprehensive unit tests, integration tests, and end-to-end UI test automation Collaborate across 5+ engineering teams with active cross-team dependencies Required Qualifications: AWS Services — Lambda, Fargate, API Gateway, ECS, S3, DynamoDB Messaging/Streaming — SQS, Kinesis Data Streams Orchestration — AWS Step Functions Distributed Systems — microservices, event-driven architecture (EDA), async orchestration API Design — RESTful APIs, service-to-service communication OpenSearch — indexing and search DevOps — Infrastructure as Code (AWS CDK), Git-based workflows React (JavaScript/TypeScript) — frontend (20% of role) Node.js, Vite / Webpack — frontend build systems Unit testing and integration testing (developer responsibility) Cypress and Selenium/DTK — UI end-to-end test automation CI/CD best practices Desired Qualifications: Experience in high-scale distributed systems Experience with AI and agentic tooling (AI-assisted development workflows, prompt engineering, agent frameworks) Familiarity with monitoring tools (CloudWatch) Multi-account data models and B2B procurement domain experience Specific Technology/Platform Experience: AWS serverless (Lambda, Step Functions, Fargate) DynamoDB at scale (millions of records, GSI patterns) Event-driven architecture (SNS/SQS/Kinesis) React/TypeScript frontend development Suppliers who can provide resources physically located in Austin, TX are preferred Prior experience delivering B2B/enterprise SaaS platforms is a plus