Senior Full Stack Engineer (React / Node.js) CIAM Platform
Location: Remote (United States)
Employment Type: 6 + Month Contract
Position Summary
We are seeking a Senior Full Stack Engineer to join our Customer Identity & Access Management (CIAM) platform team. This is a hands-on engineering role focused on designing, building, and supporting high-volume, customer-facing applications using React and Node.js.
The ideal candidate is an experienced full stack developer who has built scalable web applications capable of supporting millions of users and high transaction volumes. Experience developing authentication and identity capabilities is important, but this is primarily a software engineering role, not an IAM administration role.
The successful candidate should be comfortable owning features end-to-end from responsive UI development through backend APIs, security, performance optimization, cloud deployment, and production support.
Primary Responsibilities
Design, develop, and maintain modern React and Node.js applications.
Build scalable, secure, and resilient customer-facing applications.
Develop RESTful APIs and backend services.
Design solutions capable of supporting high transaction volumes and large user populations.
Optimize application performance, scalability, and reliability.
Develop reusable UI components and backend services.
Participate in architecture, design, and code reviews.
Troubleshoot production issues and implement performance improvements.
Collaborate with product owners, architects, UX designers, and QA teams.
Follow secure software development best practices throughout the SDLC.
Required Technical Skills : Front-End
Expert experience with React.js
TypeScript / JavaScript (ES6+)
HTML5 / CSS3
Responsive web application development
State management (Redux, Context API, etc.)
Component-driven architecture
REST API integration
Unit and integration testing
Back-End
Strong experience with Node.js
Express.js or similar frameworks
REST API design and development
Microservices architecture
API security
Database design and integration (SQL and NoSQL)
Asynchronous programming and event-driven architectures
Cloud & DevOps
Microsoft Azure experience
Azure Kubernetes Service (AKS) preferred
Docker
Kubernetes
Azure DevOps or GitHub Actions
CI/CD pipelines
Git
High-Volume Application Experience (Required)
Candidates should have demonstrated experience developing applications that support:
High transaction volumes
Large customer populations
High availability and resiliency
Performance optimization
Horizontal scalability
Distributed systems
API performance tuning
Caching strategies (Redis or similar)
Monitoring and observability
Production troubleshooting
Experience building customer-facing applications supporting hundreds of thousands or millions of users is highly desirable.
CIAM Domain Knowledge
Experience implementing customer identity capabilities is required, including familiarity with:
Customer Registration
Authentication
Authorization
Multi-Factor Authentication (MFA)
Session Management
User Profile Management
Forgot Username / Forgot Password
Password Reset
Account Recovery
Self-Service Profile Management
Administrative User Management
Working knowledge of the following standards is preferred:
OAuth 2.0
OpenID Connect (OIDC)
JWT
SAML
Passwordless Authentication
Qualifications
8+ years of software engineering experience
5+ years developing enterprise applications using React
5+ years developing backend services using Node.js
Experience building cloud-native applications
Experience deploying applications to Kubernetes
Experience building and supporting production systems
Strong understanding of secure application development
Experience working in Agile/Scrum teams
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