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 managementBuild React/TypeScript frontend components for internal tooling Write comprehensive unit tests, integration tests, and end-to-end UI test automationCollaborate across 5+ engineering teams with active cross-team dependenciesRequired Qualifications:AWS Services — Lambda, Fargate, API Gateway, ECS, S3, DynamoDBMessaging/Streaming — SQS, Kinesis Data StreamsOrchestration — AWS Step FunctionsDistributed Systems — microservices, event-driven architecture (EDA), async orchestrationAPI Design — RESTful APIs, service-to-service communicationOpenSearch — indexing and searchDevOps — Infrastructure as Code (AWS CDK), Git-based workflowsReact (JavaScript/TypeScript) — frontend (20% of role)Node.js, Vite / Webpack — frontend build systemsUnit testing and integration testing (developer responsibility)Cypress and Selenium/DTK — UI end-to-end test automationCI/CD best practicesDesired Qualifications:Experience in high-scale distributed systemsExperience 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 experienceSpecific 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 developmentSuppliers who can provide resources physically located in Austin, TX are preferredPrior experience delivering B2B/enterprise SaaS platforms is a plus