Senior Full Stack Developer JS, AWS - Capstone Integrated Solutions

Capnexus is a comprehensive services provider. Our team consists of outstanding professionals, highly experienced in designing, building, and supporting retail software. We see ourselves as a build-as-a-service provider who follows a repeatable business pattern that can be applied to a variety of platforms and verticals. Having a culture built on outcomes and delivery at the core of the business, Capstone is providing its customers with a complete suite of services for software development, system analysis, integration, implementation, and support, as well as the option to engage a single team to perform all the services they require.

Who You Are and What You'll Do:

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.

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.

Qualifications:

• 5+ years of full stack software development experience, with at least 2+ years working in AWS cloud environments.
• Proficiency in modern fr