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

Sigma Software

United States

Remote

USD 130,000 - 170,000

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 an AI-enabled platform. This remote-friendly role emphasizes cloud-native microservices with TypeScript and Node.js, using AWS serverless tech and AI capabilities.

You’ll implement AI-powered features, ensure tenant data isolation, work with OpenAI APIs, GraphQL, and REST, and contribute to reusable libraries and engineering standards in a distributed international team.

Qualifications

7+ years of commercial experience as a Back-end Developer.
Hands-on experience with TypeScript and Node.js.
Experience building API-first microservice architectures.
Experience integrating AI services, LLM APIs, or AI workflows.
Experience with AWS serverless technologies (Lambda, API Gateway, DynamoDB, EventBridge).

Responsibilities

Develop and maintain high-performance back-end microservices and AI-enabled services.
Design and integrate AI-powered features and LLM-based workflows.
Build scalable serverless solutions with AWS Lambda and API Gateway.
Collaborate on API-first architecture and OpenAPI specs.
Ensure tenant data isolation and comply with AdTech data models.
Contribute to reusable libraries, AI integration patterns, and standards.
Participate in code reviews focused on performance and reliability.
Translate product and AI requirements into scalable technical solutions.

Skills

TypeScript

Node.js

AI integration

Prompt engineering

Multi-tenant architectures

English communication

Tools

AWS Lambda

API Gateway

DynamoDB

EventBridge

OpenAI APIs

GraphQL

RESTful APIs

Terraform

CloudFormation

Vector Databases

Job description

Описание

Are you passionate about building intelligent, scalable, and high-performance platforms powered by AI technologies? We are looking for a Middle/Senior AI & Back-End Developer to join Sigma Software and contribute to the transformation of a global AdTech product into a modern AI-enabled ecosystem. In this remote-friendly role, you will work with cutting-edge cloud-native and AI technologies, helping shape a Platform-First architecture built around reusable microservices, serverless infrastructure, and intelligent automation capabilities. We at Sigma Software value engineering excellence, innovation, and collaboration. You will have an opportunity to work on a product trusted by globally recognized publishers while growing your expertise in AI integrations, cloud platforms, and scalable distributed systems.

CUSTOMER

Our Customer is a Sweden-based AdTech company specializing in advanced self-serve advertising platforms that automate direct transactions between advertisers and premium global publishers. Their solutions improve transparency and operational efficiency in digital advertising and are trusted by globally recognized brands such as TripAdvisor, Bloomberg, The Washington Post, Opera, and Dow Jones. The company processes millions of advertising transactions worldwide and actively invests in AI-driven automation and intelligent data capabilities.

PROJECT

The project focuses on the strategic transformation of an existing AdTech ecosystem toward a Platform-First, AI-enabled architecture. The Customer is transitioning from monolithic and client-specific implementations into a scalable, API-driven, multi-tenant ecosystem powered by reusable microservices and intelligent services. The team is building modern cloud-native solutions using AWS serverless technologies while introducing AI-assisted automation, recommendation systems, workflow optimization, data enrichment, and LLM-powered capabilities across the advertising lifecycle.

Key Technologies

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

Задачи

Develop and maintain high-performance Back-end microservices and AI-enabled services using TypeScript and Node.js
Design, implement, and integrate AI and LLM-powered platform features
Build scalable serverless solutions using AWS Lambda, API Gateway, DynamoDB, and EventBridge
Collaborate with cross-functional teams on API-first architecture and OpenAPI specifications
Ensure tenant data isolation and compliance with established AdTech data models
Contribute to reusable libraries, templates, AI integration patterns, and engineering standards
Participate in code reviews focused on performance, reliability, observability, and service quality
Translate product and AI feature requirements into scalable technical solutions
Support the platform transformation toward automation, standardization, and intelligent reusability
Contribute to continuous improvement initiatives and technical decision-making processes

Требования

7+ years of commercial experience as a Back-end 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 logical data isolation principles
Interest in AdTech products, automation, and AI-driven optimization
Upper-Intermediate or higher English level
Experience with ML and AI experimentation projects
Exposure to recommendation systems or data intelligence platforms
Experience working with vector databases
Familiarity with Infrastructure as Code tools such as Terraform or CloudFormation
Understanding of observability and monitoring practices in distributed systems
Experience working with scalable cloud-native architectures

Additional Information