CareerPlan

Senior Backend API Engineer

ParisFull-time2026-10-20 → 2026-11-11
Hybrid

Core

Design, build, and maintain backend services and APIs for enterprise data management and security solutions, ensuring high availability and performance for large-scale data volumes.

Role type

Senior Backend API Engineer

Builds

Backend services and APIs for the Excalibur Data Platform

Domain

Enterprise data management and security

Deliverable

production ML models | product features

Required skills

Backend development, distributed systems, event-driven architectures, database performance, AWS, observability, AI tooling

Preferred skills

Node.js/TypeScript, PHP, Go, Python, Salesforce

Technologies

AWS, serverless, containers, IaC, observability tooling

Responsibilities

Design and build backend services and APIs, own complex features and sub-systems for scale and multi-tenancy, investigate and optimize production code, use AI tooling in daily work, raise team practices through design proposals and code reviews

Seniority

Senior, hands-on IC