Overview
In this role you design, build, and operate backend microservices powering AI-enabled loyalty, health, and personalization features for pharmacy retail apps. You will connect data, business logic, and AI capabilities to deliver reliable user experiences at scale, leveraging AI coding agents. You’ll embed model lifecycle, safety layers, and CI/CD practices to keep systems robust and compliant. You collaborate with product and AI teams to translate model behavior into solid backend improvements. This is a chance to shape AI-driven backend platforms at scale within a fast-moving team.
Compensaciones / Beneficios
Great team
Competitive Salary
Restaurant Ticket for 170/month
Private Health insurance
Hybrid remote-office workplace
Versátil schedule Responsabilidades
Guide model behavior through feedback loops and evaluation mechanisms
Build and maintain pipelines for fine-tuning and retraining (SFT, Lo RA, DPO) with safe feedback
Develop evaluation tools and safety layers (guardrails, moderation, scoring) for accuracy and compliance
Integrate model lifecycle management into CI/CD workflows including versioning, deployment, rollback, and monitoring




Collaborate with data and platform engineers to enable scalable model serving and observability in Kubernetes
Translate insights from model behavior into systemic backend improvements Requisitos principales
5+ years of backend engineering experience (. NET Core / C#, Go, or Java)
Proven experience building and operating cloud-native microservices (Kubernetes, Docker, Terraform, Argo CD)
Strong understanding of API design, service contracts, and observability (Open Telemetry, Prometheus)
Experience integrating or operating LLM-based APIs (Open AI, Azure Open AI, Anthropic) in production
Solid grasp of CI/CD pipelines, automated testing, and deployment practices
Familiarity with data flows and storage (SQL/No SQL, queues, message buses)
Clear communicator able to reason about model behavior and system design with technical and product stakeholders Clear communicator
Collaborative mindset
Strategic thinking
Backend engineering with. NET Core/C#, Go, or Java
Kubernetes and Docker
Terraform and Argo CD

📌 Ai Backend Engineer (Barcelona)
🏢 Melza Consulting
📍 Barcelona