Senior Backend Architect — AI-Driven Web Platform

Callimacus

Milano

In loco

EUR 45.000 - 65.000

Tempo pieno

14 giorni+

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Descrizione del lavoro

Callimacus in Milan is seeking a senior backend engineer to shape the platform as production scales. You will own the architecture, design core backend services, and guide API design for multi-modal AI workflows.

You will optimize performance, lead reliability improvements across AWS infrastructure (ECS, RDS, S3, ALB), and shape data models across Aurora/ClickHouse for scalable analytics. Join a small, founder-led team with high ownership and growth opportunities.

Competenze

Strong TypeScript and Node.js — async, concurrency, API design.
Experience with AWS architecture and infrastructure as code.
Experience with relational and analytical stores (Aurora, ClickHouse).
Familiarity with event-driven architectures and streaming systems.
Observability, incident practice, and post-mortems.
Focus on performance and cost optimization; security and reliability engineering.

Mansioni

Set the architectural direction for core backend services and APIs powering multimodal AI workflows.
Own performance end-to-end across services, databases, and infrastructure.
Architect the cloud footprint on AWS with security and cost efficiency in mind.
Design the data layer across Aurora/ClickHouse and data pipelines.
Raise the reliability bar with monitoring, alerting, and incident response.