> Markdown version of [/jobs/ext/3571639-senior-full-stack-developer-node-js-react-ir-552](https://www.wearedevelopers.com/jobs/ext/3571639-senior-full-stack-developer-node-js-react-ir-552). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

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# Senior Full-Stack Developer (Node.js, React) (IR-552)

- **Company:** Intellectsoft LLC
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Amazon S3, User Authentication, Mobile Application Development, Databases, Relational Databases, PostgreSQL, Node.Js, Object-Relational Mapping, OAuth, PostGIS, Software Architecture, Role-Based Access Control, OpenAI, Search Technologies, Shopify, Software Engineering, Twilio, TypeScript, Openapi, Pinecone, Klaviyo Email and SMS Marketing, Qdrant, Freeform SQL, ReactJS, Retrieval-Augmented Generation, Large Language Models, Backend, Pgvector, AWS Fargate, React Native, Gsuite, Front End Software Development, Claude, Functional Programming, NestJS, Restful APIs, Amazon Simple Queue Service (SQS), Multiplatform, Webhooks
- **Published:** October 3, 2026
- **Apply:** https://arc.dev/remote-jobs/j/redirect/pou6m4tvn9

## About the Role

* 5+ years of professional software engineering experience with TypeScript end-to-end across backend and frontend environments
 * Backend Mastery: Strong production experience with NestJS (Modules, Guards, Interceptors, Pipes) and Node.js
 * Frontend Mastery: Deep experience with ReactJS (hooks, state management, modern UI patterns) and React Native (iOS & Android)
 * PostgreSQL Expertise: Proven experience with relational database design, complex SQL queries, migrations, and ORMs (Prisma or TypeORM)
 * Advanced AI Usage & Vector Search: Proven experience working with LLM APIs / Providers (AWS Bedrock, OpenAI, Anthropic Claude), vector search databases (pgvector, Pinecone, or Qdrant), and RAG architecture
 * AWS & Infrastructure: Hands-on experience with managed AWS services (ECS Fargate, S3, Cognito, EventBridge, SQS, KMS, Secrets Manager)
 * State & Data Fetching: Proficiency with asynchronous data fetching libraries (e.g., TanStack Query / React Query), REST APIs, and typed API client generation
 * Authentication & RBAC: Experience implementing multi-tenant auth workflows (OAuth2, JWTs, SSO federation) and strict permission matrices, * 5+ years of professional software engineering experience with TypeScript end-to-end across backend and frontend environments
 * Backend Mastery: Strong production experience with NestJS (Modules, Guards, Interceptors, Pipes) and Node.js
 * Frontend Mastery: Deep experience with ReactJS (hooks, state management, modern UI patterns) and React Native (iOS & Android)
 * PostgreSQL Expertise: Proven experience with relational database design, complex SQL queries, migrations, and ORMs (Prisma or TypeORM)

## Description

* End-to-End Feature Development: Design, build, and deploy full-stack capabilities across the NestJS API backend and modern React/React Native frontend surfaces
 * Backend Architecture & Domain Logic: Develop modular NestJS domain services, RESTful APIs, OpenAPI specs, and resilient third-party integrations (Twilio, Klaviyo, Google Places/Maps, Attio CRM, Shopify)
 * Frontend Application Engineering: Build complex, high-density administrative interfaces in ReactJS (pnpm/Nx workspace, TanStack Query, typed contracts) and cross-platform mobile app components in React Native
 * Database & Search: Implement relational schemas and query optimizations in Aurora PostgreSQL (TypeORM/Prisma), including spatial proximity search (PostGIS) and vector embedding indexes (pgvector for AI retrieval)
 * Security & RBAC Implementation: Enforce strict staff and member identity controls (AWS Cognito, Google Workspace SSO), resource/field-level authorization guards, and audit mechanisms for sensitive VIP data (passports, KMS-encrypted payment card boundaries)
 * Asynchronous Processing: Support event-driven ingestion and notification workflows powered by EventBridge, SQS, Lambda, and Webhooks

Benefits

 * Udemy courses of your choice
 * Team-buildings, events, marathons & charity activities to connect and recharge
 * Workshops, trainings, expert knowledge-sharing that keep you growing
 * Clear career path
 * Absence days for work-life balance
 * Flexible hours & work setup - work from any of listed locations and organize your day your way


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