AI-Driven Backend Engineer - TS/Node.js

Sigma Software; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Sigma Software is seeking a Middle/Senior AI & Back-End Developer to advance a global AdTech platform into a modern, AI-enabled ecosystem. You will work with cutting-edge cloud-native and AI technologies to build scalable microservices and reusable components.

In this remote-friendly role, you’ll contribute to a Platform-First architecture that leverages AWS serverless trends, API-first design, and AI-driven automation.

Qualifications

• 3+ years of commercial experience as a Back-end Developer or AI Software Developer.
• Strong hands-on experience with TypeScript and Node.js.
• Experience building API-first microservice architectures.
• Practical experience integrating AI services, LLM APIs, or AI-assisted workflows.
• Hands-on experience with AWS serverless technologies including Lambda, API Gateway, DynamoDB, and EventBridge.
• Understanding of RESTful and GraphQL APIs.
• Knowledge of prompt engineering concepts and AI integration approaches.
• Understanding of multi-tenant architectures and data isolation principles.
• Upper-Intermediate or higher English level.

Responsibilities

• Develop and maintain backend microservices and AI-enabled services using TypeScript and Node.js.
• Design and implement AI-powered platform features and integrate LLM APIs.
• Build scalable serverless solutions with AWS Lambda, API Gateway, DynamoDB, and EventBridge.
• Collaborate on API-first architecture and OpenAPI specifications.
• Ensure tenant data isolation and compliance with AdTech data models.
• Contribute to reusable libraries, templates, and engineering standards.
• Participate in code reviews focusing on performance and reliability.

Skills

TypeScript

Node.js

API-first architecture

AI integration

AWS serverless

Tools

AWS Lambda

DynamoDB

EventBridge

OpenAI APIs

GraphQL

Terraform

CloudFormation

Job description

Sigma Software is seeking a Middle/Senior AI & Back-End Developer to advance a global AdTech platform into a modern, AI-enabled ecosystem. You will work with cutting-edge cloud-native and AI technologies to build scalable microservices and reusable components.

In this remote-friendly role, you’ll contribute to a Platform-First architecture that leverages AWS serverless trends, API-first design, and AI-driven automation.