Senior Backend API Engineer - Data Platform, Hybrid Paris

Odaseva; Paris; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid work model in Paris

Job summary

Odaseva, based in Paris, is seeking a Senior Backend Engineer to design, build, and maintain backend services and APIs for our Excalibur Data Platform, enabling secure data and code usage at scale.

In this hybrid, full-time role, you will own complex subsystems across multiple services, drive performance and cost efficiency in the cloud, and mentor the team while leveraging AI tools to improve development workflows.

Qualifications

• 7+ years of hands-on backend development with ownership of significant features from design through delivery.
• Deep expertise in at least one backend language (Node.js/TypeScript, PHP, Go, or Python) with production experience in two or more being a strong plus.
• Proven ability to quickly get up to speed on complex systems and take ownership of key parts, building from scratch or evolving existing.
• Strong fundamentals in software design and distributed systems (event-driven, queues, DB performance, testing).
• Experience with AWS (serverless, containers, IaC) and observability tooling; Salesforce experience is a plus.
• Fluent in English and French, with clear communication and collaborative mindset.

Responsibilities

• Backend Development: Design, build, and maintain backend services and APIs from design to production.
• Architecture & Scale: Own features and subsystems for large data volumes, multi-tenancy, performance, and cloud cost.
• Production Ownership: Investigate issues, profile and optimize production code, anticipate risks.
• AI-Augmented Engineering: Use AI tooling in daily work with sound judgment and critique.
• Technical Leadership: Improve practices and code health via design proposals, code reviews and mentoring.

Skills

Backend development

English & French

Education

Master's degree in Computer Science or related field

Tools

Node.js/TypeScript

PHP

Go

Python

AWS

Observability tooling

Job description

Odaseva, based in Paris, is seeking a Senior Backend Engineer to design, build, and maintain backend services and APIs for our Excalibur Data Platform, enabling secure data and code usage at scale.

In this hybrid, full-time role, you will own complex subsystems across multiple services, drive performance and cost efficiency in the cloud, and mentor the team while leveraging AI tools to improve development workflows.