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Senior Backend Engineer for AI Infrastructure & APIs
Spain | Oct. 19, 2026
Company: Telekom
Country: Spain
Salary: $100,623 - $122,984
Type: Onsite
Employment: Full-time
Description: T-Systems Iberia is seeking a Lead Senior Backend Engineer to design and maintain scalable backend platform services behind AI inference endpoints. You will architect multi-tenant systems for authentication, API key management, usage metering, billing, and request proxy. Responsibilities include building core services with Python (FastAPI), implementing telemetry, security, and CI/CD pipelines, and collaborating with ML infrastructure teams to ensure secure, observable, and high-performance J-1…
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