Senior AI Agents Platform Engineer (Hybrid Paris)

Doctolib; Paris (TX); Hybrid; USD 100,000 - 144,000; Full time

Benefits offered by this job

Health insurance

Paid vacation 25 days + RTT 14 days

Mental health and coaching services

Lunch vouchers

Job summary

Doctolib is seeking a Senior Agents Platform Engineer in Paris to build a scalable agent runtime, a unified GenAI gateway, and robust observability for patient-care teams across Europe. You will own the declarative agent manifest, manage security and sandboxing, and drive reliability with SLOs and incident response while collaborating with cross-functional teams.

You will work on a shared agent runtime powering Consultation Assistant, Phone Assistant, and Health Companion, ensuring compliant,

Qualifications

• 5+ years of software engineering experience, including hands-on production experience with LLM-based agent systems.
• Experience with agent interoperability and tool protocols (MCP, A2A, AG-UI).
• Experience managing cost and capacity for LLM usage via routing, caching, and reserved-capacity planning.
• Security-minded design for sandboxing, permission scoping, and audit trails for autonomous systems.
• Strong communication and collaboration skills; ability to work in a founding role and shape scope.

Responsibilities

• Own the agent manifest and registry with a declarative spec for skills, tools, memory, model, guardrails, sandbox, and security.
• Own the GenAI gateway end-to-end: routing, failover, metering, cost attribution, and guardrails across self-hosted and managed providers.
• Operate infrastructure for long-running, streaming agent interactions with reliable SSE/WebSocket handling and sandboxed execution.
• Implement feature-flagged, progressive rollout for prompts, models, and configs with an emergency kill-switch and audit trail.
• Own platform reliability: define SLOs, on-call, incident response, and runbooks with provider failover.
• Build observability and evaluation: traces, logs, offline evals, and health data audit trails.
• Validate the platform by shipping reference agents and advising product teams.

Skills

Python

LiteLLM

Kubernetes

TypeScript

Go

Security-minded design

SLOs & incident response

Observability

Agent systems

A2A/AG-UI

Tools

MLflow

Datadog LLM Observability

Terraform

Docker

Kustomize

GKE/EKS

Job description

Doctolib is seeking a Senior Agents Platform Engineer in Paris to build a scalable agent runtime, a unified GenAI gateway, and robust observability for patient-care teams across Europe. You will own the declarative agent manifest, manage security and sandboxing, and drive reliability with SLOs and incident response while collaborating with cross-functional teams.

You will work on a shared agent runtime powering Consultation Assistant, Phone Assistant, and Health Companion, ensuring compliant,