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Software Engineer Fullstack AI-Modernisation - CDI Paris - Theodo

Paris💼 Full-time🗓 2026-03-25 → 2026-09-26

Core

Fullstack Software Engineer focused on AI-accelerated modernization of legacy systems for scale-ups and large enterprises.

Role type

Fullstack Software Engineer (AI Modernization)

Builds

Modernized digital products and legacy system migrations for clients like Qonto, Doctolib, and Carrefour.

Domain

Software Engineering, AI-assisted development, Legacy System Modernization

Deliverable

production ML models | product features

Required skills

Fullstack development, code quality standards, debugging, technical investigation, LLM usage, GenAI knowledge, continuous improvement mindset

Preferred skills

Top engineering school background, team collaboration, value creation orientation, structured work approach

Technologies

Node.js, Nest, Vue, React, Loopback2, Express, GenAI tools

Responsibilities

Design and develop digital products, write quality code with tests and refactoring, conduct technical investigations and debugging, work with LLMs to accelerate development, collaborate closely with clients

Seniority

Mid-level to Senior, potential for growth into Tech Lead or Architect

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