Senior Full Stack Developer (JS, AWS)

About this role

About Capnexus

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. With a culture built on outcomes and delivery, Capnexus provides customers with a complete suite of services for software development, system analysis, integration, implementation, and support — including 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 — including a self-service subcontractor portal, risk profiling, and exception management — leveraging AWS services, with a modern frontend and serverless backend. This is an opportunity to work on cutting-edge generative AI solutions that transform manual document review workflows into automated, intelligent processes.

Key Deliverables

• Self-service subcontractor portal web application, including real-time data input verification and status tracking

• Automated Subcontractor Submission Portal with smart forms, document uploads, and an embedded assistant

• Risk Profiler dashboard covering subcontractor risk ratings, submission tracking, and AI-driven follow-up

• Exception Management dashboard with flagged subcontractors, risk scores, and routing/approval workflows

• API integration framework, including Autodesk and CMIC ERP integrations

• Infrastructure as Code (IaC) repository and CI/CD pipeline for deployment

• Role-based access controls (RBAC) and security implementation for multi-party portal access

• Source code repository with IaC templates and application components

• Technical documentation, including architecture diagrams, deployment guides, and operational runbooks

• Security implementation details covering encryption at rest/in transit, VPC design, IAM policies, and audit logging

Responsibilities

• Design and develop the application architecture, UI/UX, and technical requirements during the Discovery & Design phase

• Build and deploy a self-service subcontractor portal enabling real-time data input verification, submission status tracking, and document upload (insurance certificates, bonding letters, financial statements) via smart forms and an embedded assistant

• Develop RESTful and serverless APIs using AWS Lambda and Amazon API Gateway to support frontend/backend integration, including an API integration framework for Autodesk and CMIC ERP

• Configure and integrate AWS SES for automated, personalized subcontractor outreach and response tracking

• Configure Amazon QuickSight to build the Risk Profiler and Exception Management dashboards — including real-time status, risk ratings, and flagged-subcontractor routing/approval workflows — integrated with CMIC ERP data

• Integrate AI-powered document validation and exception management workflows driven by Amazon Bedrock

• Design and implement role-based access controls (RBAC) and security controls for multi-party portal access, including encryption at rest/in transit, VPC design, IAM policies, and audit logging

• Develop and host frontend applications using AWS Amplify, Amazon S3, and Amazon CloudFront

• Build out an Infrastructure as Code (IaC) repository and CI/CD pipeline, and maintain a source code repository containing IaC templates and application components

• 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

• Produce technical documentation (architecture diagrams, deployment guides, operational runbooks) and contribute to knowledge transfer 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, including third-party/ERP API integrations

• Experience implementing Infrastructure as Code (e.g., AWS CDK, CloudFormation, or Terraform) and CI/CD pipelines (AWS CodePipeline, CodeBuild, or equivalent)

• Experience designing role-based access control (RBAC) and security best practices (IAM, VPC, encryption, audit logging) for multi-tenant or multi-party applications

• 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 or construction platform integrations (CMIC, Autodesk Construction Cloud, or similar)

• 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,

Similar jobs

• Senior Full-Stack Software Engineer (JavaScript) — Spgi · Cambridge, MA | New York, NY
• Senior Full-Stack Cloud Developer — Guidehouse · Remote
• Senior Full Stack Developer — Fox Corporation · New York, New York, United States
• Senior Full Stack Developer — Accenturefederalservices · Washington, DC
• Senior Full Stack Developer — "Stride · Remote
• Senior Full Stack Developer — Axle · Rockville, MD
• Senior Full Stack Developer — Accenturefederalservices · Chantilly, VA
• Senior Full Stack Developer — Rockstargames · Carlsbad, California, United States