Senior Full Stack Developer (JS, AWS)

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 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 Have: 

• 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. 

 

"Our Culture": 

At Capnexus, the central principles that we all adhere to, and the glue that holds us together, are our keystones. Our four keystones are: 

• "A Customer Obsessed, Delivery Focused, Culture" 

• We’re driven to exceed our customers’ expectations by listening,