Senior Full Stack Developer (JS, AWS)

Capnexus•New York, NY

2d•Remote

About The Position

Capnexus is looking for a highly skilled Senior AWS Full Stack Developer to design, develop, and deliver a cloud-native application for a 12-week AI-powered modernization engagement in the construction industry. You will serve as a hands-on full stack developer building an intelligent subcontractor pre-qualification platform leveraging AWS services including Amazon SES, QuickSight, Lambda, and API Gateway, with a modern frontend and serverless backend. This is an exciting opportunity to work on cutting-edge generative AI solutions that transform manual document review workflows into automated, intelligent processes.

Requirements

5+ years of full stack software development experience, with at least 2+ years working in AWS cloud environments.
Proficiency in modern frontend frameworks (React, Angular, or Vue) and backend development using Python, Node.js, or TypeScript.
Hands-on experience with AWS serverless architecture including Lambda, API Gateway, S3, and Amplify.
Experience building and configuring Amazon QuickSight dashboards and data visualizations.
Familiarity with Amazon SES for transactional and automated email workflows.
Strong understanding of RESTful API design, data modeling, and cloud-native integration patterns.
Experience with CI/CD pipelines and DevOps practices (AWS CodePipeline, CodeBuild, or equivalent).
Solid skills in frontend/backend integration, application testing, and deployment automation.
Excellent problem-solving, communication, and collaboration abilities within Agile/Scrum teams.

Nice To Haves

Experience with Amazon Bedrock, Amazon Textract, or other AWS AI/ML services.
Familiarity with ERP systems or API integrations (CMIC or similar construction/enterprise platforms).
AWS Certification (Developer Associate or Solutions Architect).
Experience with CloudFront CDN configuration and S3 static site hosting.
Background in construction, insurance, or financial services industries.

Responsibilities

Design and develop the application architecture, UI/UX, and technical requirements during the Discovery & Design phase.
Configure and integrate AWS SES for automated email delivery and Amazon QuickSight for executive-facing dashboards.
Build and deploy a document upload portal enabling subcontractors to submit insurance certificates, bonding letters, and financial statements.
Develop RESTful and serverless APIs using AWS Lambda and Amazon API Gateway to support frontend/backend integration.
Create real-time status and risk profiling dashboards in Amazon QuickSight integrated with CMIC ERP data.
Integrate AI-powered document validation and exception management workflows driven by Amazon Bedrock.
Build and manage automated subcontractor outreach features including personalized email generation and response tracking via Amazon SES.
Develop and host frontend applications using AWS Amplify, Amazon S3, and Amazon CloudFront.
Participate in CI/CD pipeline setup, automated testing, and deployment to production environments.
Collaborate with cross-functional team members including AI/ML, DevOps, and Data Engineering resources.
Conduct integration testing, support user acceptance testing (UAT), and develop user training materials.
Contribute to knowledge transfer documentation and post-deployment operations guides.