Sigma Software Group
Sigma Software Group
1,001 – 5,000 Employees
AutomotiveConsultingHealthcare
Sigma Software Group is a multinational technology consulting company founded in 2002. Its teams provide software development, graphic design, testing, and technical support for clients in sectors including automotive, healthcare, telecommunications, aviation, banking, gaming, real estate, and advertising. The company hires IT specialists to work on complex engineering projects and supports professional development through mentoring and continuous learning. Remote work opportunities are part of its working model, with projects serving organizations such as AstraZeneca, Scania, and SAS.

Middle Backend Developer (TypeScript/Node.js, AI) — Germany Remote

Build TypeScript and Node.js microservices, LLM-powered features, and AWS serverless solutions for a global AdTech platform. Help advance automation, standardization, and intelligent reuse across the product.

Description

  • Develop and maintain high-performance backend microservices and AI-enabled services with TypeScript and Node.js
  • Design, implement, and integrate AI- and LLM-powered platform capabilities
  • Create scalable serverless solutions with AWS Lambda, API Gateway, DynamoDB, and EventBridge
  • Partner with cross-functional teams to shape API-first architecture and OpenAPI specifications
  • Maintain tenant data isolation and alignment with established AdTech data models
  • Help develop reusable libraries, templates, AI integration patterns, and engineering standards
  • Review code with emphasis on performance, reliability, observability, and service quality
  • Turn product and AI feature requirements into scalable technical implementations
  • Support the platform’s shift toward automation, standardization, and intelligent reuse
  • Take part in continuous improvement and technical decision-making

Requirements

  • At least three years of commercial experience as a backend developer or AI software developer
  • Strong practical experience with TypeScript and Node.js
  • Experience developing API-first microservice architectures
  • Hands-on experience integrating AI services, LLM APIs, or AI-assisted workflows
  • Practical knowledge of AWS serverless services, including Lambda, API Gateway, DynamoDB, and EventBridge
  • Understanding of RESTful and GraphQL APIs
  • Working knowledge of prompt engineering and AI integration techniques
  • Understanding of multi-tenant systems and logical data isolation
  • Interest in AdTech, automation, and AI-driven optimization
  • Upper-intermediate English or higher
  • Strong analytical and problem-solving abilities
  • Proactive approach with a strong sense of ownership
  • Enthusiasm for modern backend engineering and AI technologies
  • Ability to work effectively with distributed international teams
  • Interest in innovation, experimentation, and ongoing learning
  • Clear communication and a strong focus on engineering quality

Benefits

  • Remote-friendly working arrangement
  • Scope to deepen expertise in AI integrations, cloud platforms, and scalable distributed systems
  • Chance to contribute to a product used by globally recognized publishers
  • Work with distributed international teams
  • Opportunities for continuous learning and experimentation

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