LLM-Powered Software Engineer at Theodo | Paris

Join Theodo as an LLM-Powered Software EngineerAt Theodo, we have been at the forefront of digital product development since 2009, empowering innovative businesses to design, develop, and deploy ingenious digital products through cutting-edge technology and Lean methodologies.Our unique approach is grounded in three core principles:- We have cultivated recog…

Discover Theodo's Journey and SuccessSince its inception in 2009, Theodo has been dedicated to empowering innovative companies in the design, development, and deployment of intelligent digital products, leveraging cutting-edge technology and a Lean approach.Theodo has experienced exceptional growth over the past 15 years, with a team of over 700 passionate Theodoers, predominantly Software Engineers, committed to technology and continuous improvement. Our expansion has led to the formation of specialized entities focusing on various technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Products Goods). By 2025, Theodo is projected to generate €100M in revenue.At Theodo FinTech, we aim to make finance more beneficial for individuals, businesses, and society. As the FinTech experts within Theodo, we support our clients—large corporations, ScaleUps, and StartUps—in designing, developing, and maintaining accessible, sustainable, and socially beneficial digital products.As technology experts in financial services, Theodo FinTech delivers exceptional digital products in record time, ensuring zero bugs and high security standards. We excel in integrating APIs from all B2B fintech platforms to create embedded finance solutions.Your Responsibilities:We are currently seeking an Engineering Manager & Architect to oversee complex products and architectures for major accounts, developed by multiple squads at Theodo:- Engineering: Ensure satisfaction of your tech clients (typically CTOs and VPs of Engineering) and business stakeholders by guaranteeing the quality of architectures and code produced by your teams.- Management: Directly manage teams to foster collaboration and productivity while achieving project goals.

Discover Theodo's Journey and SuccessSince 2009, Theodo has been empowering innovative companies in crafting, developing, and launching ingenious digital products, leveraging cutting-edge technology and a Lean approach.Our distinctive methodology is built upon three core principles:- We have honed acknowledged expertise in key technologies for product design and development;- At every stage of the project, our priority is to create value for our clients;- We recruit the finest digital talents and nurture their ingenuity through a Lean approach.Theodo has experienced remarkable growth over the past 15 years, gathering over 700 passionate Theodoers, primarily Software Engineers dedicated to technology and continuous improvement. As we expand, our group has organized into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and by industry (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo aims to achieve a revenue of €100M.Your Future Team:You will join a community of over 120 Theodo tech professionals: software engineers, tech leads, engineering managers, and architects, where you can exchange, learn, and grow daily.At Theodo, tech teams work on project-based teams, tailored to meet each client's needs. You will be part of a small team of Theodoers (4 to 5 members), including Software Engineers, a Tech Lead, and a Product Manager. Together, you will collaborate closely with the client, with regular updates to share progress, deepen understanding of their challenges, and evolve the product to align with user needs.Your Future Responsibilities:As a Fullstack Software Engineer at Theodo, your mission will be to design and develop valuable, high-performance, and sustainable digital products to address the challenges faced by our clients and their users.

Join the Success Story of TheodoSince 2009, Theodo has been empowering innovative companies in the design, development, and deployment of ingenious digital products, leveraging the best of technology and Lean methodology.Our unique approach is built on three core principles:- We have developed recognized expertise in key product design and development technologies;- Regardless of the project stage, our priority in every decision is creating value for our clients;- We recruit the top digital talents and nurture their ingenuity through a lean approach.Theodo has experienced exceptional growth over the past 15 years, with our team of over 700 Theodoers, primarily Software Engineers, who are passionate about technology and continuous improvement. As we grow, the group has structured itself into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) or by industry (Fintech, Govtech, Healthtech, Consumer Products Goods). By 2025, Theodo aims to generate €100M in revenue.Join us at Theodo Extend, the new entity within Theodo, designed to meet a real-world need: more and more clients want to maintain control over product management while integrating top-level developers into their teams.In 2024, we collaborated with over 100 clients, including Carrefour, Dior, and Yves Saint Laurent, with 63 experts engaged in these missions.Your Mission:As a Software Engineer at Theodo Extend, you will be fully integrated into a client team but never alone.You will remain connected to our passionate community of engineers, receive training in best practices, and benefit from continuous support.You will work on:- Migrating an existing codebase to ensure its reliability, maintainability, and scalability through a complete transition to a modern stack.- Launching a V1 in just a few weeks, in high-pressure environments, while mastering the entire process.

Role Overview Theodo is hiring a Lead Software Engineer for its fintech division in Paris. This role centers on guiding a team of developers to build and deliver software products for the financial sector. The position combines hands-on technical leadership with team mentorship and cross-team collaboration. What You Will Do Lead and mentor a team of software engineers focused on fintech projects Drive the design and development of new software applications for financial services Work closely with product, design, and other teams to deliver reliable, high-quality solutions Promote a culture of technical excellence and ongoing improvement within the team Location This position is based in Paris.

Join Theodo: A Leader in Digital SolutionsSince 2009, Theodo has been partnering with innovative businesses to design, develop, and deploy cutting-edge digital products, leveraging the best of technology and Lean methodology.With remarkable growth over the past 15 years, Theodo has assembled a vibrant team of over 700 passionate Software Engineers dedicated to continuous improvement. Our organization has evolved into specialized units focused on technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Goods). By 2025, Theodo aims to achieve a revenue of €100M.Theodo Apps, with over 130 successful projects, specializes in the development of multi-platform applications (mobile, web, and TV). We assist our clients in the design, development, and deployment of applications that enhance user experiences.In just 10 years, Theodo Apps has grown from 2 to 120 employees, generating €24 million in revenue by 2024!We collaborate with a diverse range of clients, including entrepreneurs, innovative SMEs, and large corporations like TF1+, Carrefour, Urgo, and Compagnies des Alpes.Your Team:You will become part of a tech community of over 50 Theodoers, including software engineers, tech leads, engineering managers, and architects, providing opportunities for daily learning and growth.At Theodo, our tech teams are organized based on client needs. You will work in a small team (4 to 5 members) alongside Software Engineers, a Tech Lead, and a Product Manager. Together, you will closely collaborate with the client, regularly sharing progress, deepening problem understanding, and evolving the product to meet user needs effectively.Your Future Responsibilities:As a Fullstack Software Engineer at Theodo Apps, you will...

Join Theodo Apps as a Mobile Software Engineer!Since 2009, Theodo has been at the forefront of innovation, helping businesses design, develop, and deploy ingenious digital products by leveraging cutting-edge technology and Lean methodologies.With remarkable growth over the last 15 years, our team has expanded to over 700 talented Theodoers, primarily consisting of passionate Software Engineers dedicated to continuous improvement. Theodo has structured its operations into specialized entities focusing on technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo is projected to generate €100M in revenue.Theodo Apps, our division specializing in multi-platform application development (mobile, web, and TV), has successfully delivered over 130 projects. We partner with our clients to design, develop, and deploy applications that transform user experiences.In just a decade, Theodo Apps has grown from 2 to 120 employees, achieving a revenue of €24 million in 2024!We collaborate with a diverse range of clients, from innovative entrepreneurs and SMEs to industry giants like TF1+, Carrefour, Urgo, and Compagnies des Alpes.Your Team:The technical team at Theodo Apps consists of 49 software engineers, tech leads, and architects, all from top engineering schools, along with Engineering Managers dedicated to your success.Your Future Responsibilities:As a Mobile Software Engineer, your mission will be to solve strategic challenges for our clients through technology while contributing to the growth of Theodo Apps by enhancing your skills and pursuing continuous improvement.- Design and develop multi-platform applications (mobile, web, TV)

About Theodo Since 2009, Theodo has partnered with companies to design, build, and launch digital products using leading technologies and a Lean approach. Over 700 team members, mainly software engineers, drive continuous improvement and technical excellence. Theodo’s growth has led to specialized groups focused on technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries such as fintech, govtech, healthtech, and consumer products. The company aims to reach €100M in revenue by 2025. AI Modernization at Theodo The AI Modernization practice stands at the center of Theodo’s strategy to lead in AI-driven software development across Europe. This team helps clients move legacy systems to modern languages and frameworks with AI, reducing business, cybersecurity, and compliance risks tied to outdated technology. Using a proven methodology and controlled AI, these projects are delivered up to three times faster than traditional approaches. How the Team Works Theodo’s tech community brings together software engineers, tech leads, engineering managers, and architects. Teams form around project needs, combining engineering and product management skills. Collaboration with clients is close and ongoing: teams share updates, deepen their understanding of client challenges, and adapt products to fit user needs. About the Role: Engineering Manager for AI Modernization The Engineering Manager will join the AI Modernization practice in Paris. This role manages up to four tech leads and oversees the success of four projects, working alongside a Group Project Manager. The position involves supporting technical teams, guiding project delivery, and contributing to Theodo’s mission of accelerating legacy system modernization with AI.

Join Theodo: Pioneers in Digital SolutionsSince 2009, Theodo has been at the forefront of innovation, helping businesses design, develop, and deploy ingenious digital products by leveraging the best technology and Lean methodologies.With exceptional growth over the past 15 years, Theodo now boasts a talented team of over 700 professionals, primarily composed of passionate Software Engineers dedicated to continuous improvement. Our growth has led to specialized entities within the group focusing on various technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Heathtech, Consumer Products). By 2025, Theodo aims to generate 100M€ in revenue.At Theodo FinTech, our mission is to enhance the usefulness of finance for individuals, businesses, and society. We partner with major corporations, ScaleUps, and StartUps within the financial services sector to design, develop, and maintain accessible, sustainable, and socially beneficial digital products.As experts in financial services technology, Theodo FinTech delivers exceptional digital products at lightning speed with zero bugs and high security. Our team excels at integrating APIs from all B2B fintech platforms to create innovative embedded finance solutions.Your Responsibilities:As a Senior Full-Stack Software Engineer at Theodo FinTech, your role will involve:- Rapidly coding without bugs, utilizing coding assistants (Copilot, Cursor, Windsurf).- Designing features by contributing product ideas and identifying optimal technical strategies, while adhering to our delivery practices.

Join Theodo as a Product ManagerAt Theodo, we have been empowering innovative companies since 2009 to design, develop, and launch ingenious digital products by leveraging cutting-edge technology and a Lean approach.Our unique methodology is driven by three core principles:- We have cultivated recognized expertise in key product design and development technologies;- Our top priority is to create value for our clients at every stage of the project;- We attract the best digital talents and foster their ingenuity through a Lean approach.Theodo has experienced exceptional growth over the past 15 years, with a team of over 700 passionate software engineers dedicated to technology and continuous improvement. Our organization has structured itself into specialized entities focused on technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo aims to achieve €100 million in revenue.Your Future Responsibilities:As a Product Manager, your mission is to help maximize product value by prioritizing and delivering high-quality features that enhance customer satisfaction.- Prioritize and deliver high-value features while meeting milestones and commitments to clients.- Demonstrate the value and progress of the team by making work visible and facilitating client decision-making (review decks, daily emails, etc.).- Understand client preferences and organize a swift and appropriate response to issues, leveraging tools such as value models, client surveys, and problem-solving methods.- Manage daily delivery using Lean methodologies: backlog management, writing clear user stories, and sprint planning.

Join Theodo as a Sales Executive in HealthTechSince its inception in 2009, Theodo has been at the forefront of supporting innovative enterprises in the design, development, and deployment of cutting-edge digital products, leveraging the best of technology and Lean methodologies.Our distinctive approach is anchored on three core principles:- Mastery of key product design and development technologies;- Prioritizing value creation for our clients in every project phase;- Recruiting top digital talent and nurturing their ingenuity through Lean practices.Over the past 15 years, Theodo has experienced remarkable growth, now comprising over 700 passionate Theodoers, mostly Software Engineers committed to technology and continuous improvement. Our expansion has led to the formation of specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and by industry (Fintech, Govtech, HealthTech, Consumer Products Goods). By 2025, Theodo aims to achieve €100M in revenue.At Theodo HealthTech, our health-focused division, we assist all health sector stakeholders in developing custom digital medical devices.Combining our expertise in Lean practices and technology with our deep understanding of health, we design and develop digital medical devices that seamlessly integrate into patient care pathways (digital therapies - DTx, virtual clinical trials, digitized care pathways). Our mission is to create products that transform the lives of their users, whether they are healthcare providers or patients.

Join Theodo HealthTech as a Tech Recruiter!At Theodo, we have been empowering innovative companies since 2009 by designing, developing, and deploying ingenious digital products, leveraging the best of technology and Lean methodologies.Our unique approach is built on three foundational principles:- We have cultivated recognized expertise in key product design and development technologies.- Regardless of the project stage, our priority is always to create value for our clients.- We recruit the best digital talents and nurture their ingenuity through Lean practices.Theodo has experienced exceptional growth over the past 15 years, bringing together a team of over 700 passionate Theodoers, primarily Software Engineers dedicated to technology and continuous improvement. As we grow, Theodo has structured itself into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and by industry (Fintech, Govtech, Healthtech, Consumer Products Goods). By 2025, Theodo aims to achieve a revenue of €100M.At Theodo HealthTech, our expert entity in health, we support all health stakeholders in developing tailor-made digital medical devices.Leveraging our experience in Lean and tech, combined with our knowledge of healthcare, we design and develop digital medical devices that integrate into patient care pathways (digital therapies - DTx, virtual clinical trials, digitized care pathways). Our goal is to create products that transform the lives of their users, whether they are caregivers or patients.

Role Overview Theodo Fintech is hiring a Product Manager in Paris. This role guides projects that influence the future of fintech products. The Product Manager works with teams across disciplines to design, build, and launch solutions that address user needs and support business objectives. What You Will Do Define the product vision and set clear goals Develop and manage product roadmaps Oversee the execution of product initiatives from concept through delivery Collaborate closely with engineering, design, and business teams Who We’re Looking For Experience leading product development or management initiatives Comfort working with teams from different backgrounds and specialties Motivation to make a measurable impact in fintech Location This position is based in Paris.

Join Theodo as a Lead AI EngineerAt Theodo, we have been supporting innovative companies since 2009 in the design, development, and deployment of cutting-edge digital products by leveraging the best of technology and Lean methodologies.With 15 years of exceptional growth, Theodo boasts a team of over 700 passionate software engineers committed to continuous improvement. Our organization has diversified into specialized entities focusing on technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo aims to generate a revenue of €100 million.Established in 2016, Theodo Data & AI is dedicated to assisting clients in shaping and implementing their data strategies, alongside researching and developing state-of-the-art artificial intelligence solutions.Our company is thriving: Theodo Data & AI experiences over 30% annual revenue growth, creating exciting new opportunities for our team members!

About Theodo Healthtech Theodo Healthtech builds digital solutions for the healthcare sector from its Paris office. The team focuses on applying artificial intelligence to real-world healthcare challenges. Role Overview: AI-Native Software Engineer This position centers on designing, building, and refining AI-powered applications for healthcare. The AI-Native Software Engineer works closely with colleagues from various disciplines to create tools that support better patient outcomes and more efficient healthcare operations. What You Will Do Collaborate with cross-functional teams to develop AI-driven applications for healthcare Design, implement, and optimize software that supports patient care and streamlines processes What We Look For Solid background in software engineering Strong interest in artificial intelligence technologies Motivation to improve healthcare through technology This role is based in Paris.

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.

Theodo Group: A Journey of Innovation and SuccessSince 2009, Theodo has been dedicated to supporting innovative companies in the design, development, and deployment of ingenious digital products, leveraging the best of technology and Lean methodologies.With over 15 years of exceptional growth, Theodo has expanded to a team of more than 700 passionate software engineers committed to continuous improvement. As we scale, we have structured ourselves into specialized units focused on various technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Products Goods). By 2025, Theodo aims to achieve a revenue of €100 million.Established in 2016, Theodo Data & AI serves as the data and AI division of Theodo. Our goal is to partner with clients in shaping and deploying their data strategies, as well as researching and developing state-of-the-art AI solutions.The company is experiencing rapid growth, with Theodo Data & AI recording an annual revenue increase of over 30%, creating exciting new opportunities for our team!Why We Are Hiring a Lead Data Software Engineer?To contribute to the growth of Theodo Data & AI and to strengthen our Data Software Engineering teams, we are seeking an experienced professional.

Theodo: A Journey of Innovation and SuccessSince 2009, Theodo has been at the forefront of assisting innovative companies in the design, development, and deployment of ingenious digital products, leveraging cutting-edge technology and a Lean approach.Our unique approach is built on three core principles:- We have developed recognized expertise in key technologies for product design and development;- At every stage of the project, our primary focus is creating value for our clients;- We recruit top digital talent and nurture their ingenuity through our Lean approach.Theodo has experienced exceptional growth over the past 15 years: our teams comprise more than 700 Theodoers, primarily Software Engineers, who are passionate about technology and continuous improvement. As we have expanded, the group has structured itself into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and by industry (Fintech, Govtech, Healthtech, Consumer Products Goods). By 2025, Theodo aims to generate €100M in revenue.Your Team:You will join a tech community of over 120 Theodoers, including software engineers, tech leads, engineering managers, and architects, with whom you can exchange knowledge and grow daily.At Theodo, our tech teams work on project teams tailored to each client's needs. You will be part of a small team of Theodoers (4 to 5 people), consisting of Software Engineers, a Tech Lead, and a Product Manager. Together, you will collaborate closely with the client, regularly sharing progress, deepening your understanding of their challenges, and evolving the product to best meet the needs of its users.Your Future Responsibilities:As a Fullstack Software Engineer at Theodo, your mission will be to design and develop useful, high-performing, and sustainable digital products to address the challenges faced by our clients and their users.

Discover Theodo's Journey and SuccessSince 2009, Theodo has been empowering innovative companies by designing, developing, and deploying ingenious digital products, leveraging cutting-edge technology and a Lean approach.Our unique methodology is built on three principles:- We have established recognized expertise in key product design and development technologies;- Regardless of the project phase, our priority in every decision is creating value for our clients;- We attract top digital talent and nurture their ingenuity through a Lean approach.Theodo has experienced exceptional growth over the last 15 years, with a team of over 700 dedicated professionals, primarily Software Engineers, passionate about technology and continuous improvement. As we grow, we have structured into specialized entities focused on technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo aims to generate €100M in revenue.Your Team:You will join a community of over 120 Theodoers: software engineers, tech leads, engineering managers, and architects, with whom you will exchange ideas, learn, and grow on a daily basis.At Theodo, our tech teams work in project-based groups tailored to the specific needs of each client. You will be part of a small team (4 to 5 members) comprising Software Engineers, a Tech Lead, and a Product Manager. Together, you will collaborate closely with clients, regularly sharing progress, deepening understanding of their challenges, and evolving the product to meet user needs.Your Future Responsibilities:As a Fullstack Software Engineer at Theodo, your mission will be to design and develop useful, high-performance, and sustainable digital products to address the challenges faced by our clients and their users.

Discover Theodo and Our Success StorySince 2009, Theodo has been a pioneering force in helping innovative companies design, develop, and launch ingenious digital products, leveraging cutting-edge technology and a Lean approach.Our unique approach is built on three key principles:- We have cultivated recognized expertise in essential product design and development technologies;- At every stage of a project, our priority is to create value for our clients;- We recruit the best digital talent and nurture their ingenuity through Lean methodologies.Theodo has experienced exceptional growth over the last 15 years: our teams consist of over 700 Theodoers, primarily Software Engineers passionate about technology and continuous improvement. With our growth, we have organized into specialized entities focusing on technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Products Goods). By 2025, Theodo is expected to generate €100M in revenue.Your Team:You will join a vibrant tech community of over 120 Theodoers: software engineers, tech leads, engineering managers, and architects, with whom you can exchange ideas, learn, and progress on a daily basis.At Theodo, our tech teams work in project groups tailored to meet each client's needs. You will be part of a small team of Theodoers (4 to 5 members), including Software Engineers, a Tech Lead, and a Product Manager. Together, you will collaborate closely with the client, engaging in regular discussions to share progress, deepen your understanding of their challenges, and adapt the product to meet user needs.Your Future Responsibilities:As a Fullstack Software Engineer at Theodo, your mission will be to design and develop valuable, high-performing, and sustainable digital products that address the challenges faced by our clients and their users.