Senior Software Engineer

Senior Software Engineer - AI Applications (W/M/NB) Ubisoft is a global leader in gaming with teams across the world creating original and memorable gaming experiences, from Assassin’s Creed, Rainbow Six to Just Dance and more. We believe diverse perspectives help both players and teams thrive. If you’re passionate about innovation and pushing entertainment boundaries, join our journey and help us create the unknown JOB DESCRIPTION Join the Ubisoft AI Initiatives team and architect the future of the information lifecycle at Ubisoft. From advanced hybrid search and RAG pipelines to complex, agentic reasoning, we are engineering the tools that turn raw information into high-velocity decision‑making. This role requires a highly experienced Senior Software Engineer to design and develop scalable back‑end systems that power cutting‑edge AI applications. RESPONSIBILITIES As a Senior Software Engineer – AI Applications, you will play a critical role in designing and building the core services that enable our solutions. You’ll work at the intersection of AI, enterprise cloud‑based applications, large‑scale data processing, and cloud infrastructure. Architect and Develop Back‑End Systems: Design and implement scalable, high‑performance back‑end services to support AI applications. Optimize Performance: Ensure low‑latency, high‑throughput serving of AI models, agents and APIs, optimizing for both speed and reliability. Collaborate Across Teams: Partner with data scientists and ML engineers to integrate AI models and advanced agents into production systems, ensuring seamless deployment and monitoring. Cloud Infrastructure: Build and maintain cloud‑native solutions using platforms like AWS, Azure, focused on scalability, security, and cost‑efficiency. Technical Leadership: Mentor junior engineers, conduct code reviews, and contribute to the overall technical strategy of the team. Stay Ahead of the Curve: Keep up‑to‑date with the latest trends and technologies in AI, cloud computing, and software engineering, and bring innovative ideas to the table. QUALIFICATIONS Must‑Have Qualifications: Experience: Professional and practical software engineering experience, with a focus on back‑end development in compute‑intensive and/or data‑intensive environments. Programming Skills: Expertise in languages such as Python, Java, Rust, or C++. Cloud Expertise: Hands‑on experience with cloud platforms (AWS, GCP, Azure) and containerization technologies (Docker, Kubernetes). AI/ML Integration: Experience deploying and serving machine learning models in production environments. System Design: Strong understanding of system architecture, microservices, and API design. Problem‑Solving: Proven ability to tackle complex technical challenges and deliver innovative solutions. Nice‑to‑Have Qualifications: Familiarity with Deep Learning architectures, Language Models, Vision Models. Understanding of RAG‑based architectures (indexing, embedding, vector databases and search, query processing). Experience building and deploying AI agents and multi‑agent systems, including agent orchestration frameworks (e.g., LangGraph, Strands Agents, CrewAI), tool integration and agentic workflow design. Experience with serverless architectures and event‑driven systems. Contributions to open‑source projects or publications in relevant fields. ADDITIONAL INFORMATION Please submit your application documents in English. Ubisoft's perks Profit Sharing, yearly company saving plan. 25 paid time off + 12 additional paid days off. 50% of transportation pass paid by the company, lunch vouchers (9€/day). Healthcare for you and your family. Maternity leave of 20 weeks, paternity/co‑parental leave of 7 weeks. Hybrid work model: minimum 3 days a week in Saint‑Mandé office, 2 days working from home. Gym available in the building. Recruitment process 30 minutes: phone or visio call with a Recruiter. 60 minutes: interview with the manager of the role and a Recruiter. 60 minutes: interview with members of the AI team. 60 minutes: technical assessments with Ubisoft technical experts. Information about Ubisoft Ubisoft offers the same job opportunities to all, without any distinction of gender, ethnicity, religion, sexual orientation, social status, disability, or age. Ubisoft ensures the development of an inclusive work environment which mirrors the diversity of our gamers’ community. EEO Statement We embrace a hybrid work model helping you stay connected with your team and aligned with business priorities, while giving you the opportunity to maintain your work‑life balance. Note that some roles are fully office‑based and are not eligible for hybrid work. #J-18808-Ljbffr