Senior Data Scientist - ML

The Role This isn't just another Senior Data Scientist role. It's your chance to be part of something bigger shaping the programmatic future of Out of Home with one of the most exciting, agile teams in the industry. You'll play a key role in delivering real impact - whether it's building strong partnerships, driving innovation, or ensuring seamless execution. You'll be hands-on, strategic, and empowered to bring fresh ideas to the table. What You'll Be Doing Joining our Data Science & Optimisation team, you'll work at the heart of our platform, designing and deploying machine learning models that drive forecasting, pricing, and yield optimisation. You'll be empowered to influence product strategy, introduce innovative modelling approaches, and champion data-driven thinking across the organisation. Build forecasting models to predict supply and demand and integrate with Optimization engine using time series and ML techniques Develop pricing algorithms and models to help media owners maximise profit and manage yield Build the in-house generative AI tool using LLM models to enable efficiency, automation and smart operations Partner with Product to design, build, and integrate new data products into VIOOH's platform. Involve with product strategy and roadmap settings Maintain and scale optimisation engine across multiple markets and products Conduct ad hoc analysis and research to support strategic business decisions Serve as a mentor and technical guide for junior team members, fostering knowledge sharing and skill development Continuously explore and adopt new modelling techniques, tools, and research to enhance our platform's intelligence. Champion ML/AI best practices and serve as a subject-matter expert across teams

You're not afraid to roll up your sleeves, challenge the norm, and dive into the details. You're hungry to learn, you value people, and you thrive in an environment where change is constant, and impact is everything. We're looking for someone who has: 5+ years of industry experience in Data Science, with hands-on work in areas like modeling, analytics, A/B testing, causal inference, or related areas. Experience building end-to-end machine learning models for real-world business applications. Advanced degree (PhD preferred, or Master's with 5+ years of experience) in Computer Science, Statistics, Mathematics, Engineering, or a related field. Strong proficiency in Python and SQL, with experience across the full data processing. Communicates clearly, confidently, and with purposes. Able to explain complex concepts to both technical and non-technical audiences. Self-motivated and adaptable; thrives in a fast-moving, collaborative environment; extreme attention to details. We don't require more, but it would be a plus if you have: Experience in AdTech, Media, eCommerse, or related industries. Experience in cloud data platform (e.g. Snowflake) and cloud services (e.g. AWS) Exposure to operations research and optimization algorithms (e.g., linear programming, integer programming). Exposure to large language models (LLMs), generative AI, or deep learning. Experience in professional software development. Prior client-facing or consulting experience. Record of academic publications or patents.

At VIOOH, we're not just participating in the evolution of programmatic Digital Out of Home (DOOH) advertising - we're leading it. We're here to make OOH smarter, faster, and more connected, with a mission to boost agility and impact for media buyers and sellers around the world. With innovation at our core and integrity in everything we do, we're building a premium marketplace that puts digital OOH in its rightful place - front and centre in omnichannel campaigns. About Us VIOOH (pronounced "view") is a global programmatic marketplace for digital out of home media. Backed by JCDecaux, the world's #1 out-of-home company, and powered by a team of passionate ad tech pioneers, we're unlocking the full potential of DOOH. Headquartered in London and growing fast across the globe, we connect media owners and buyers to trade more efficiently, drive better results, and push the boundaries of what's possible. We live by five values that shape everything we do: Integrity - Do the right thing, even when it's tough. Make it Happen - Action over talk. Always. Team VIOOH - Collaboration, kindness and getting it done together. Be Courageous - Take risks. Learn fast. Think big. Customercentric - If it doesn't help our customers, we don't do it., What You'll Get A fast-moving, collaborative culture where your ideas count The chance to work with smart, kind people from around the world The freedom to innovate and the support to make it happen Access to industry-leading tools and professional development A company that backs you - and gives back Ready to Apply? From your first conversation with us, we promise a respectful, human experience. We'll keep you informed at every step and make sure you're set up for success. VIOOH is proud to be an equal opportunities employer. We celebrate difference and are committed to creating an inclusive workplace where everyone can thrive.