Lead Software Engineer - Theodo Fintech in Paris

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.

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.

At Theodo Extend, we are always on the lookout for talented individuals to join our dynamic teams. If you don't see your ideal position among our current listings, don't let that hold you back. We firmly believe that every unique talent can contribute to our success!

Join the Success Story of TheodoSince its inception in 2009, Theodo has been at the forefront of helping innovative businesses design, develop, and deploy ingenious digital products, leveraging cutting-edge technology and Lean methodologies.Our distinctive approach is anchored on three core principles:- We have honed recognized expertise in key product design and development technologies;- Regardless of the project stage, delivering value to our clients is our foremost priority in every decision;- We attract top digital talent and nurture their ingenuity through a Lean approach.Theodo has experienced remarkable growth over the past 15 years, bringing together more than 700 passionate Software Engineers dedicated to technology and continuous improvement. As we expand, we have structured our teams into specialized entities focused on technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo aims to achieve €100M in revenue.You will become part of Theodo Extend, a newly formed entity within Theodo, designed to meet a growing market demand: many clients wish to retain control over product management while integrating top-tier developers into their teams.In 2024, we collaborated with over 100 clients, including Carrefour, Dior, and Yves Saint Laurent, with 63 experts dedicated to these projects.Your Mission:As a Software Engineer at Theodo Extend, you will be fully integrated into a client team while enjoying the support of our community of passionate engineers. You will receive training in best practices and ongoing guidance.You will work on tasks such as:- Revamping an existing codebase to ensure reliability, maintainability, and scalability through a complete migration to a modern stack.- Deploying a V1 in a matter of weeks, even in high-pressure contexts.

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: 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.

Discover Theodo and Its Success StorySince 2009, Theodo has been empowering innovative companies in crafting, developing, and deploying ingenious digital products by leveraging cutting-edge technology and a Lean approach.Our unique methodology is built upon three core principles:- We have honed recognized expertise in key product design and development technologies;- At every project stage, our primary focus is creating value for our clients;- We recruit top digital talent and nurture their ingenuity through lean practices.Theodo has experienced exceptional growth over the past 15 years, with our team comprising over 700 passionate Theodoers, primarily Software Engineers dedicated to technology and continuous improvement. As we expand, our organization has structured into specialized entities based on technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Goods). By 2025, Theodo aims to achieve €100M in revenue.Your Responsibilities:As a Senior Full-Stack Software Engineer at Theodo, your mission is to:- Code efficiently and without bugs, utilizing coding assistants (Copilot, Cursor, Windsurf).- Design features by proposing product enhancements and identifying optimal technical strategies, while adhering to our Lean delivery practices.- You will be part of a team of 1 to 3 engineers led by a tech lead and a product manager. The goal is for you to quickly transition into a tech lead role once you’ve mastered our methodology, enabling you to mentor other developers.To Achieve This:- A tech training program lasting 6 to 8 weeks focusing on refactoring, debugging, and testing.- You will be mentored by a Tech Lead, dedicated to the technical progression of their team through...

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.

Role Overview Theodo is hiring a Lead Software Engineer to join its Paris office. This role involves leading a team of developers on impactful projects, shaping software solutions with modern technologies, and setting a high standard for quality. What You Will Do Guide a team of engineers through all stages of software development Work closely with team members to deliver reliable, well-crafted solutions Apply current technologies and development practices to real-world challenges Mentor and support developers in their growth Encourage open communication and foster a collaborative team spirit Who We’re Looking For Strong technical background in software engineering Experience leading or mentoring development teams Clear communicator who can motivate and inspire others Comfort working in Paris or relocating to the city

Join the Theodo Family and Be Part of Our Success StorySince 2009, Theodo has been empowering innovative companies by facilitating the design, development, and deployment of ingenious digital products, leveraging the best of technology and Lean methodologies.Our unique approach is founded on three core principles:- We have developed recognized expertise in key product design and development technologies;- At every project stage, our priority is to create value for our clients;- We attract the finest digital talents and nurture their ingenuity through a Lean approach.Theodo has experienced exceptional growth over the past 15 years, boasting a team of over 700 dedicated Theodoers, predominantly Software Engineers passionate about technology and continuous improvement. As we grow, we have structured our group into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and by industry (Fintech, Govtech, Healthtech, Consumer Goods). By 2025, Theodo aims to generate €100 million in revenue.At Theodo HealthTech, our expert health entity, we support all health stakeholders in the development of tailor-made digital medical devices. Leveraging our expertise in both Lean methodologies and technology, combined with our deep understanding of health, 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 healthcare providers or patients.Your Team:You will join a tech community of over 120 Theodoers including software engineers, tech leads, engineering managers, and architects, all driven by a shared passion for technology and innovation.

Role Overview Theodo is hiring a Lead Software Engineer in Paris. This role involves guiding software development projects and supporting a team of engineers. The position focuses on designing and building reliable, high-performance software that meets client expectations. What You Will Do Lead software projects from planning through delivery Work hands-on with the team to design and implement technical solutions Collaborate with colleagues from different functions to align on project goals Oversee project timelines and ensure milestones are met Mentor junior developers and encourage knowledge sharing Team and Culture This role supports a culture of continuous learning and improvement. The team values technical skill, open communication, and a shared commitment to delivering strong results for clients. Location This position is based in Paris.

Join Theodo as a Sales Executive!Since 2009, Theodo has been empowering innovative companies by designing, developing, and deploying ingenious digital products, leveraging the best of technology and Lean methodologies.With an exceptional growth trajectory over the last 15 years, Theodo has united over 700 passionate Theodoers, primarily Software Engineers dedicated to technology and continuous improvement. As we expand, we have structured our teams 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 generate €100M in revenue.Founded in 2016, Theodo Data & AI is the data and AI entity of Theodo. Our mission is to assist clients in designing and implementing their data strategies while developing cutting-edge artificial intelligence solutions.As a rapidly growing company, Theodo Data & AI has consistently achieved over 30% annual revenue growth, creating exciting new opportunities for Theodoers!

Theodo's Journey and SuccessSince 2009, Theodo has been empowering innovative companies in the design, development, and deployment of ingenious digital products, leveraging the best of technology and Lean methodologies.Our unique approach is based on three core principles:- We have developed recognized expertise in key 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 talents and foster their ingenuity through Lean practices.Theodo has experienced exceptional growth over the past 15 years: our teams consist of over 700 passionate Theodoers, primarily Software Engineers dedicated to technology and continuous improvement. As we expand, the group has structured itself into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) or by industries (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo is projected to generate €100M in revenue.The technical team at Theodo comprises 120 software engineers, tech leads, and architects from top engineering schools, along with 13 Engineering Managers to ensure their success.Your Mission:- Manage and develop Tech Leads: You will support 1 to 4 Tech Leads in their skill enhancement and personal growth.- Ensure technical delivery: You will guarantee code quality (3S: stability, security, speed), milestone adherence, and architecture robustness.- Contribute to business development: Engage in strategic discussions with clients (CIOs, sponsors...), help identify opportunities, and play an active role in pre-sales with our sales team.Your Tools for Success:• Direct management by Theodo's CTO or VP of Engineering• Training in Lean management from top Lean coaches• An ecosystem with 500 tech and product experts• Multiple dojos (hands-on training sessions)

Join Theodo HealthTech as a Full Stack Healthcare Software EngineerSince 2009, Theodo has been at the forefront of supporting innovative companies in designing, developing, and deploying ingenious digital products. We leverage cutting-edge technology and adopt a Lean approach to create value.Our distinctive methodology is anchored in three core principles:- We have developed recognized expertise in key product design and development technologies.- At every project stage, our primary focus is creating value for our clients.- We recruit top digital talents and nurture their ingenuity through the Lean approach.Theodo has experienced exceptional growth over the past 15 years, with a team of over 700 passionate Software Engineers dedicated to continuous improvement. Our organizational structure has evolved into specialized entities focusing on specific 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 €100M.At Theodo HealthTech, we empower all stakeholders in the healthcare sector to develop custom digital medical devices. Our proficiency in Lean methodologies and technology, combined with a deep understanding of healthcare, enables us to create digital medical devices that integrate seamlessly into patient care pathways, such as digital therapies (DTx), virtualized clinical trials, and digitalized care pathways. Our mission is to craft products that transform the lives of their users, whether they are caregivers or patients.Your Team:You will join a vibrant tech community of over 120 Theodoers, including software engineers, tech leads, engineering managers, and architects, who share a passion for technology and innovation.

Join Theodo's Thriving JourneySince its inception in 2009, Theodo has been dedicated to empowering innovative companies through the design, development, and deployment of ingenious digital products, leveraging cutting-edge technology and Lean methodologies.With remarkable growth over the past 15 years, our team has expanded to over 700 passionate Theodoers, primarily Software Engineers focused on technology and continuous improvement. Our structure has evolved into specialized entities based on technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, GovTech, HealthTech, Consumer Products). By 2025, Theodo is on track to generate €100M in revenue.At Theodo GovTech, we partner with clients including ministries, local authorities, and large public operators to design, develop, and maintain accessible, sustainable, and socially beneficial digital products.Joining our adventure means sharing a common ambition: leveraging digital technology to enhance the efficiency of public action and improve the daily lives of agents and users.Your Team:At Theodo, our tech teams work collaboratively in project-based groups tailored to each client's needs. 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 work closely with the client, engaging in regular exchanges to share progress, deepen understanding of their challenges, and evolve the product in alignment with user needs.Your Future Missions:As a Fullstack Software Engineer at Theodo GovTech, your mission will be to design and develop digital products that are useful, high-performing, and sustainable to address the needs of our clients and their users.Throughout your projects, you will receive support to enhance your skills, learn to write quality code, understand product challenges, and contribute effectively to the development process.

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.

Join Theodo and Be Part of Our Success Story!Since 2009, Theodo has been empowering innovative companies in the design, development, and deployment of ingenious digital products, leveraging the best technology and Lean methodologies.Our distinctive approach is founded on three key principles:- We have cultivated recognized expertise in essential product design and development technologies;- Regardless of the project's phase, creating value for our clients is our top priority in every decision;- We recruit the finest digital talents and foster their ingenuity through Lean practices.Theodo has experienced remarkable growth over the past 15 years: our teams comprise over 700 Theodoers, primarily Software Engineers passionate about technology and continuous improvement. With this growth, the group has organized 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.Your Team:You will join a community of over 120 tech enthusiasts at Theodo: software engineers, tech leads, engineering managers, and architects, where you can share ideas, learn, and grow every day. At Theodo, our tech teams work in project groups tailored to the unique needs of each client. 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 through regular communications to share progress, deepen the understanding of their challenges, and evolve the product to meet user needs effectively. Your Future Responsibilities:As a Fullstack Software Engineer at Theodo, your mission will involve designing and developing useful, high-performing, and sustainable digital products to address the challenges faced by our clients and their users.

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 recognized expertise in key technologies for product design and development;- Regardless of project phase, our priority is to create value for our clients with every decision;- We recruit the best digital talent and nurture their ingenuity through our Lean approach.Theodo has experienced exceptional growth over the past 15 years, with over 700 Theodoers, primarily Software Engineers, who are passionate about technology and continuous improvement. As we expand, we have structured our teams into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and by industry (Fintech, Govtech, Healthtech, Consumer Goods). By 2025, Theodo aims to achieve €100M in revenue.Your Future Responsibilities:Join our Business Critical Migration team as we support our clients in migrating legacy systems to modern, robust stacks using LLM and agentic workflows.You will collaborate with product and tech teams of 4 to 6 members, including Software Engineers, AI Architects, and IT Migration Delivery Managers, tackling complex and impactful challenges.As an LLM-Powered Software Engineer, your mission will be to establish and iterate on robust LLM workflows, integrated within the client code lifecycle.Specifically, you will:- Identify the technical components to migrate (e.g., controllers, pages, services…)- Implement LLM workflows or micro-agents to automate or translate code blocks- Generate retro-documentation from existing code- Configure and integrate open-source or internal LLM tools (e.g., cline, GenAIScript)