Middle Typescript/Node.js Developer with AI experience (AdTech)
Sigma Software4 days ago
Remote, PolandMid Level
Responsibilities
- Develop and maintain high-performance backend 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 on API-first architecture and OpenAPI specifications.
- Implement tenant data isolation and support compliance with established AdTech data models.
- Contribute 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 platform transformation toward automation, standardization, and intelligent reusability.
- Contribute to continuous improvement and technical decision-making.
Requirements
- At least 3 years of commercial experience as a backend 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 Lambda, API Gateway, DynamoDB, and EventBridge.
- Understanding of RESTful and GraphQL APIs, prompt engineering, AI integration approaches, multi-tenant architectures, and logical data isolation.
- Interest in AdTech products, automation, and AI-driven optimization.
- Upper-Intermediate or higher English proficiency.
- Preferred: experience with ML and AI experimentation projects, recommendation systems, data intelligence platforms, vector databases, Terraform or CloudFormation, observability and monitoring, and scalable cloud-native architectures.
- Strong analytical, problem-solving, collaboration, communication, ownership, and continuous-learning skills.
Benefits
- Remote-friendly work arrangement.
- Opportunity to work on AI integrations, cloud platforms, reusable microservices, serverless infrastructure, and scalable distributed systems.
- Opportunity to grow expertise while contributing to a global AdTech product used by recognized publishers and brands.
Tech Stack
Categories
About Sigma Software
Sigma Software is a London-headquartered, privately held IT consultancy that designs and builds custom software for startups and enterprises. The company provides end-to-end services—engineering, web and mobile development, .NET/Java platforms, AR/VR, and UI/UX—delivered via outsourcing, managed teams, and consulting. Founded in 2002, it supports long-term product development and modernization projects across multiple industries for global clients.