Middle/Senior Typescript/Node.js Developer with AI experience (AdTech)
Sigma Software1 day ago
Remote, PolandSenior
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 with AWS Lambda, API Gateway, DynamoDB, and EventBridge.
- Contribute to API-first, multi-tenant platform architecture and OpenAPI specifications.
- Create 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 requirements into scalable technical solutions.
- Support automation, standardization, intelligent reusability, and continuous technical improvement.
Requirements
- At least 7 years of commercial experience as a backend developer.
- Strong hands-on experience with TypeScript and Node.js.
- Experience building API-first microservice architectures and scalable cloud-native systems.
- 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.
- Knowledge of RESTful and GraphQL APIs, prompt engineering concepts, and AI integration approaches.
- Understanding of multi-tenant architectures and logical data isolation principles.
- Experience with ML or AI experimentation projects, recommendation systems, data intelligence platforms, or vector databases is a plus.
- Familiarity with Terraform or CloudFormation and observability practices in distributed systems is a plus.
- Upper-Intermediate or higher English proficiency is a plus.
- Strong analytical, problem-solving, communication, collaboration, ownership, and continuous-learning skills.
Benefits
- Remote-friendly role with collaboration across distributed international teams.
- Opportunity to work on a global AdTech product used by recognized publishers and brands.
- Opportunity to grow expertise in AI integrations, cloud platforms, scalable distributed systems, and intelligent automation.
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.