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
CapNexus 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.