AI-Driven Backend Engineer (TypeScript/Node.js)

Sigma Software; Województwo dolnośląskie; A distancia; PLN 180.000 - 340.000; Jornada completa

Descripción de la vacante

Sigma Software is seeking a Middle/Senior AI & Back-End Developer to transform a global AdTech product into a modern AI-enabled ecosystem. The role is remote-friendly, focusing on a Platform-First architecture with reusable microservices and serverless infrastructure.

You will work with AWS Lambda, API Gateway, and AI integrations, building scalable services and AI-powered features across the advertising lifecycle. Strong TypeScript/Node.js skills and multi-tenant design are essential.

Formación

• 7+ years of commercial Back-end development experience.
• Strong hands-on with TypeScript and Node.js.
• Experience building API-first microservice architectures.
• Practical experience integrating AI services and LLM APIs.
• Hands-on with AWS serverless tech: Lambda, API Gateway, DynamoDB, EventBridge.
• Understanding of RESTful and GraphQL APIs.
• Knowledge of prompt engineering and AI integration approaches.
• Multi-tenant architectures and data isolation concepts.
• Upper-Intermediate or higher English level.

Responsabilidades

• Develop and maintain high-performance back-end microservices and AI-enabled services.
• Design and integrate AI-powered platform features and workflows.
• Build scalable serverless solutions using AWS Lambda, API Gateway, DynamoDB, EventBridge.
• Collaborate on API-first architecture and OpenAPI specifications.
• Ensure tenant data isolation and comply with AdTech data models.
• Contribute to reusable libraries, templates, and engineering standards.
• Participate in code reviews focusing on performance, reliability, and observability.
• Translate product and AI feature requirements into scalable technical solutions.
• Support platform transformation toward automation and reusability.

Conocimientos

TypeScript

Node.js

API-first microservices

AI integration

LLM APIs

RESTful APIs

GraphQL

Multi-tenant architectures

English proficiency

Herramientas

AWS Lambda

API Gateway

DynamoDB

EventBridge

Terraform

CloudFormation

OpenAI APIs

Descripción del empleo

Sigma Software is seeking a Middle/Senior AI & Back-End Developer to transform a global AdTech product into a modern AI-enabled ecosystem. The role is remote-friendly, focusing on a Platform-First architecture with reusable microservices and serverless infrastructure.

You will work with AWS Lambda, API Gateway, and AI integrations, building scalable services and AI-powered features across the advertising lifecycle. Strong TypeScript/Node.js skills and multi-tenant design are essential.