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

Wrocław, PolandRemoteFull-time3+ yrs experiencePosted 4d ago

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Job description

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

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 logical data isolation principles
Interest in AdTech products, automation, and AI-driven optimization
Upper-Intermediate or higher English level

WILL BE A PLUS

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

PERSONAL PROFILE

Strong analytical and problem-solving skills
Proactive and ownership-driven mindset
Passion for modern Back-end engineering and AI technologies
Ability to collaborate effectively within distributed international teams
Interest in innovation, experimentation, and continuous learning
Strong communication skills and attention to engineering quality

Job details are sourced from the employer's original posting.

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About the company

Sigma Software

We are looking for a Senior Go Developer to join our dynamic team and work on cutting-edge AdTech solutions. This role offers the opportunity to experiment with AI, LLMs, and emerging technologies while solving complex challenges in large-scale data processing.  CUSTOMER Our customer is a global leader in contextual advertising with more than 500 employees worldwide. They specialize in delivering highly relevant ads by leveraging AI, real-time technology, and large-scale data processing. Operating in the AdTech industry, they are recognized for innovation in Connected TV (CTV) advertising. The team you will join works with the agility of a startup while benefiting from the resources of a global organization. PROJECT You will contribute to the development of a smart advertising platform that processes terabytes of data to understand audiences and deliver precise, contextual ads. The platform combines AI, LLMs, and emerging technologies to push the boundaries of CTV advertising. In this role, you will own innovation end-to-end — from research and prototyping to delivering production-ready solutions.

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Industry: AdTech
Open roles: 49