Associate Full-Stack Dev: AI-Powered SaaS on PERN

Sigma Infosolutions Ltd.; United States; On-site; USD 60,000 - 90,000; Full time

Job summary

Sigma Infosolutions Ltd. is seeking an Associate FullStackDeveloper to join our team in Atlanta, US. This Junior role focuses on building and maintaining a multi-tenant SaaS platform using the PERN/MERN stack, with emphasis on Node.js, React, and scalable REST APIs.

You will collaborate with product, design, and engineering teams to deliver high-quality production-grade code. The candidate should be proficient in PostgreSQL/NoSQL, REST APIs, and modern front-end techniques; familiarity with AI

Qualifications

• Experience building multi-tenant SaaS apps using PERN/MERN stacks.
• Strong React.js with Hooks, Context API, and state management.
• Skilled in designing RESTful APIs and database design (SQL/NoSQL).

Responsibilities

• Develop, enhance, and maintain features for a multi-tenant SaaS platform using PERN stack.
• Implement tenant-aware architecture with RBAC and secure API design.
• Design and optimize scalable REST APIs and responsive front-end components.
• Integrate AI capabilities (LLM APIs, embeddings, RAG) into product features.
• Support CI/CD pipelines, cloud deployments, and environment configurations.
• Monitor logs, troubleshoot production issues, and provide Tier-1/2 support.

Skills

PERN/MERN stack

React.js

Node.js

REST APIs

SQL/NoSQL design

Git

Docker

AWS

GraphQL

AI tooling integration

Tools

Express.js

PostgreSQL

Sequelize

Prisma

Mongoose

Next.js

Redux

Zustand

Job description

Sigma Infosolutions Ltd. is seeking an Associate FullStackDeveloper to join our team in Atlanta, US. This Junior role focuses on building and maintaining a multi-tenant SaaS platform using the PERN/MERN stack, with emphasis on Node.js, React, and scalable REST APIs.

You will collaborate with product, design, and engineering teams to deliver high-quality production-grade code. The candidate should be proficient in PostgreSQL/NoSQL, REST APIs, and modern front-end techniques; familiarity with AI