[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.

Responsibilities

• Design 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 optimization
• Design and develop the Customer 360 API layer to expose unified customer profiles and CDP outputs to downstream applications and dashboards
• Build responsive UI/UX for customer-facing and internal applications including the Customer Portal, preference management center, and campaign management interfaces
• Develop and maintain bi-directional integration with NetSuite for lead creation, contact synchronization, and opportunity management
• Implement integrations with third-party platforms including Camp Spot, Office 365, Zoom Phones, and Amazon Connect to support omnichannel workflows
• Build customer journey tracking features and front-end components to visualize lifecycle analytics and engagement data
• Implement the customer preference management center supporting opt-in/opt-out, communication preferences, and data compliance workflows
• Develop campaign management workflow interfaces integrated with CDP and marketing automation outputs
• Consume SageMaker and Bedrock model outputs to surface AI-driven insights within applications
• Collaborate with Data/ML and DevOps/MLOps engineers to ensure seamless end-to-end data flows from back-end pipelines to front-end interfaces
• Support UAT for application features and contribute to technical documentation

Skills

• 5+ years of full stack development experience with demonstrated depth on the backend
• Deep hands-on experience with AWS serverless services: Lambda (including production debugging and optimization), Step Functions, EventBridge, and API Gateway — architectural depth required, not just familiarity
• Proven experience with Lambda observability in production: structured logging, CloudWatch Logs Insights, AWS X-Ray tracing, and Lambda Powertools
• Strong experience building and consuming RESTful APIs; familiarity with GraphQL or AWS AppSync a plus
• Proficiency in Python or Node.js/TypeScript for serverless function development
• Experience 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 capability
• Familiarity with AWS Cognito (authentication), DynamoDB or RDS (data persistence), and S3 (asset storage)
• Understanding of data privacy and compliance concepts as applied to application design
• Comfortable working in Agile/Scrum teams alongside AWS Professional Services
• Experience with RAG architectures, agentic workflows, or integrating LLM/AI model outputs into applications
• Familiarity with Amazon Bedrock or SageMaker inference endpoints consumed from application layer
• Experience integrating with Amazon Connect or omnichannel communication platforms
• Familiarity with Amazon QuickSight embedded analytics
• AWS Certification (Developer Associate or Solutions Architect)
• Background in real estate, property management, or marketing technology platforms

Company Overview