Senior Full-Stack Engineer (React/Node.js) — Media Products

About the Role We are looking for a Senior Fullstack Engineer to build and own the media format services behind a programmatic advertising platform that serves billions of impressions a year. You will work across the full path of a creative: from video and image ingestion and processing, through APIs, to delivery and rendering inside web players, news sites and e-commerce stores.

Design, build and operate media services end to end: ingestion, processing, APIs and production delivery. Build low-latency, high-throughput backend services that turn large, noisy, real-world data into value. Work hands-on with video and image pipelines, web players and content embedded into third-party interfaces.

Own production quality: security, monitoring, observability and continuous improvement. Collaborate with engineers, product owners and data scientists, and raise the bar for how backend systems are built and run. Iterate fast: changes are safely tested against real traffic, and an idea often reaches validation in days rather than weeks.

Contribute to the next generation of ad products and formats. Use modern AI development tooling as a normal part of your daily workflow.

4+ years of professional software engineering experience, including running production systems. Strong [link] (or a comparable language) with a backend focus. Strong React experience. You will build and maintain the customer-facing interfaces around these services, so this is a fu