Middle Typescript/Node.js Developer with AI experience (AdTech) at SigmaSoftware2

Department: BU004 (TLTaT)Seniority in posting: senior

Language

Setup: Remote
Location: Wrocław, Lower Silesian Voivodeship
Type: Full-time
Level: senior
Posted: Sep 25, 2026

Description

Sigma Software is hiring a Middle/Senior AI & Back-End Developer to help transform a global AdTech product into a scalable, AI-enabled platform. The role focuses on building TypeScript and Node.js microservices, integrating LLM and AI services, developing AWS serverless solutions, designing API-first architectures, and supporting multi-tenant data isolation and engineering standards. The position is remote-friendly and requires at least three years of commercial back-end or AI software development experience, along with strong TypeScript, Node.js, AWS, API, and AI integration expertise.

Required Skills

TypeScript
Node.js
AWS Lambda
API Gateway
DynamoDB
EventBridge
OpenAI APIs
GraphQL
RESTful APIs
Terraform
CloudFormation
Prompt engineering

Additional Information

Required Previous Experiences: At least 3 years of commercial experience as a Back-End Developer or AI Software Developer
Hands-on experience with TypeScript and Node.js
Experience building API-first microservice architectures
Experience integrating AI services, LLM APIs, or AI-assisted workflows
Hands-on experience with AWS serverless technologies
Understanding of RESTful and GraphQL APIs
Knowledge of prompt engineering and AI integration approaches
Understanding of multi-tenant architectures and logical data isolation principles
Preferred Qualifications: Experience with ML and AI experimentation projects
Exposure to recommendation systems or data intelligence platforms
Experience working with vector databases
Familiarity with Terraform or CloudFormation
Understanding of observability and monitoring practices in distributed systems
Experience working with scalable cloud-native architectures
Translation Company Name: Sigma Software