Software Engineer Go, Rust or Scala (Infrastructure - Foundation) - Freelance (H/F/X)

Pioneer of online flash sales since 2001 and key player in European e-commerce, Veepee collaborates with over 7,000 brands to offer highly discounted products available for a limited time. Operating across various sectors, including fashion, home, wine, travel or beauty... Veepee achieved a turnover of 3.3 billion euros incl. VAT in 2024 and employs 5,000 staff members across 10 countries. 📄 JOB DESCRIPTION We are looking for a Senior Software Engineer to join our Foundation - Infrastructure Development team. You will contribute across multiple projects depending on needs and priorities, including Gaio (our GenAI Orchestrator), VeepeeCloud (our zero vendor lock-in private cloud), and other internal infrastructure services. You will be embedded in a cross-functional team alongside SREs, DevOps engineers, and Product Owners. Our codebase spans Rust, Go, and Scala, you are expected to work across these languages as the project requires. You are expected to bring solid engineering judgment, operate confidently in high-pressure production environments, and leverage AI coding tools as part of your daily workflow.    Technical Environment: --> Development, Operations and Maintenance of Gaio (GenAI Orchestrator):     LLM provider integration (OpenAI, Anthropic, Gemini, etc.)     Consumer API development and API call translation/routing     LLM consumption accounting and usage metering     Streaming response handling and protocol normalization   --> Development, Operations and Maintenance of VeepeeCloud services (depending on assignment):     Private cloud APIs (Compute, Storage, DNS, Certificates, NLBaaS, etc.)     Terraform provider for internal cloud resource consumption     CLI clients   --> Involvement in production operations:     Support participation and incident response     War room participation during critical production events