About the job
Theodo at a Glance
Since 2009, Theodo has partnered with forward-thinking companies to design, build, and launch digital products. The team combines technology expertise with Lean methodology to deliver results that matter.
Theodo’s approach stands on three principles:
- Deep expertise in essential technologies for product design and development
- Consistent focus on creating value for clients at every project stage
- Recruiting top digital talent and fostering their growth through Lean practices
Over the past 15 years, Theodo has grown to a team of more than 700, with most roles in software engineering and a shared drive for continuous improvement. The group is organized into specialized units by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and by industry (Fintech, Govtech, Healthtech, Consumer Products Goods). Theodo aims to reach €100M in revenue by 2025.
About the AI Modernization Practice
The AI Modernization team leads Theodo’s efforts to become a European leader in applying AI to software development. This practice focuses on using AI to migrate legacy systems to modern languages and frameworks. The goal: reduce business, cybersecurity, and compliance risks tied to outdated systems. By combining controlled AI with a proven approach, the team delivers critical projects up to three times faster than traditional methods.
The Team Structure
Join a community of over 350 Theodoers: software engineers, tech leads, engineering managers, and architects. Theodo encourages daily learning and knowledge sharing across this network.
Project teams are tailored for each client. As a Lead Software Engineer - AI Modernization, you’ll work in a small group of 4 to 5 people, typically including Software Engineers, a Tech Lead, and a Product Manager. Teams collaborate closely with clients, sharing updates, exploring challenges, and adapting products to user needs.
The field of software engineering is changing with AI. This is a chance to develop as an AI-Native Tech Lead.
Location
Role based in Paris.

