[Remote] AWS Serverless Full Stack Engineer

Note: The job is a remote job and is open to candidates in USA. Capnexus is a comprehensive services provider specializing in retail software development. They are seeking a highly skilled Senior AWS Serverless Full Stack Engineer to design, develop, and deliver cloud-native solutions in the construction industry, focusing on building an intelligent subcontractor pre-qualification platform leveraging AWS services.ResponsibilitiesDesign and develop serverless backend services using AWS Lambda, Step Functions, EventBridge, and API Gateway Build, debug, and maintain Lambda functions in production, including structured logging, CloudWatch Insights, X-Ray tracing, and Lambda Powertools for observability and performance optimizationDesign and develop the Customer 360 API layer to expose unified customer profiles and CDP outputs to downstream applications and dashboardsBuild responsive UI/UX for customer-facing and internal applications including the Customer Portal, preference management center, and campaign management interfacesDevelop and maintain bi-directional integration with NetSuite for lead creation, contact synchronization, and opportunity managementImplement integrations with third-party platforms including Camp Spot, Office 365, Zoom Phones, and Amazon Connect to support omnichannel workflowsBuild customer journey tracking features and front-end components to visualize lifecycle analytics and engagement dataImplement the customer preference management center supporting opt-in/opt-out, communication preferences, and data compliance workflowsDevelop campaign management workflow interfaces integrated with CDP and marketing automation outputsConsume SageMaker and Bedrock model outputs to surface AI-driven insights within applicationsCollaborate with Data/ML and DevOps/MLOps engineers to ensure seamless end-to-end data flows from back-end pipelines to front-end interfacesSupport UAT for application features and contribute to technical documentationSkills5+ years of full stack development experience with demonstrated depth on the backendDeep hands-on experience with AWS serverless services: Lambda (including production debugging and optimization), Step Functions, EventBridge, and API Gateway — architectural depth required, not just familiarityProven experience with Lambda observability in production: structured logging, CloudWatch Logs Insights, AWS X-Ray tracing, and Lambda PowertoolsStrong experience building and consuming RESTful APIs; familiarity with GraphQL or AWS AppSync a plusProficiency in Python or Node.js/TypeScript for serverless function developmentExperience integrating with third-party CRM or ERP systems (NetSuite, Salesforce, or similar)Front-end proficiency in React or equivalent; able to build responsive, accessible UI but with equal or stronger backend capabilityFamiliarity with AWS Cognito (authentication), DynamoDB or RDS (data persistence), and S3 (asset storage)Understanding of data privacy and compliance concepts as applied to application designComfortable working in Agile/Scrum teams alongside AWS Professional ServicesExperience with RAG architectures, agentic workflows, or integrating LLM/AI model outputs into applicationsFamiliarity with Amazon Bedrock or SageMaker inference endpoints consumed from application layerExperience integrating with Amazon Connect or omnichannel communication platformsFamiliarity with Amazon QuickSight embedded analyticsAWS Certification (Developer Associate or Solutions Architect)Background in real estate, property management, or marketing technology platformsCompany OverviewCapNexus is a consulting and IT services company that provides enterprise technology transformation services for companies. It was founded in 2026, and is headquartered in Middletown, New York, USA, with a workforce of 51-200 employees. Its website is https://capnexus.io.