AI-Powered TS/Node.js Backend Engineer (Remote)

Sigma Software

United States

Remote

USD 120,000 - 180,000

Full time

5 days ago

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Job summary

Sigma Software is seeking a Middle/Senior AI & Back-End Developer to transform a global AdTech product into a modern AI-enabled ecosystem. This remote-friendly role leverages cloud-native and AI technologies to build a Platform-First architecture with reusable microservices, serverless infrastructure, and intelligent automation.

You will work on AI integrations, cloud platforms, and scalable distributed systems with an international team.

Qualifications

7+ years of commercial Back-end development experience.
Strong hands-on TypeScript and Node.js proficiency.
Experience building API-first microservice architectures.
Practical AI service and LLM API integration experience.
Hands-on AWS serverless tech: Lambda, API Gateway, DynamoDB, EventBridge.
Understanding of RESTful and GraphQL APIs.
Knowledge of prompt engineering and AI integration approaches.
Multi-tenant data isolation concepts.
Interest in AdTech, automation, and AI-driven optimization.
Upper-Intermediate+ English level.

Responsibilities

Develop and maintain high-performance back-end microservices and AI-enabled services.
Design, implement, and integrate AI and LLM-powered platform features.
Build scalable serverless solutions using 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, AI integration patterns, and standards.
Participate in code reviews focusing on performance and reliability.
Translate product and AI requirements into scalable solutions.
Support platform transformation toward automation and reusability.
Engage in continuous improvement and technical decision-making.