Principal Backend Engineer Jobs

Principal Design Engineer — San Jose, CA. Apply via Workday.

Principal Environmental Engineer Lead — Boise, ID - Main Site. Apply via Workday.

Principal AI & Automation Engineer — PA - Philadelphia, 1800 Arch St. Apply via Workday.

Principal Software Engineer, Type Script, JavaScript - Video Engineering — CO - Englewood, 183 Inverness Dr West. Apply via Workday.

Principal Data Modeler Architect — VA - Reston, 11951 Freedom Dr Ste 900. Apply via Workday.

Principal Adversary Emulation Engineer — PA - Philadelphia, 1800 Arch St. Apply via Workday.

Principal Software Development Engineer — PA - Philadelphia, 1800 Arch St. Apply via Workday.

Principal Architect, Enterprise Architecture - FreeWheel — VA - Reston, 11951 Freedom Dr Ste 900. Apply via Workday.

Principal Software Architect — PA - Philadelphia, 1800 Arch St. Apply via Workday.

Principal Quality Engineer - CST - Memphis, TN (Onsite) — Memphis, Tennessee, United States of America. Apply via Workday.

Principal Automation Software Test Engineer: SDET — Lafayette, Colorado, United States of America. Apply via Workday.

Synthesia is the world’s leading AI video platform for business, used by over 90% of the Fortune 100. Founded in 2017, the company is headquartered in London, with offices and teams across Europe and the US. As AI continues to shape the way we live and work, Synthesia develops products to enhance visual communication and enterprise skill development, helping people work better and stay at the center of successful organizations. Following our recent Series E funding round, where we raised $200 million, our valuation stands at $4 billion. Our total funding exceeds $530 million from premier investors including Accel, NVentures (Nvidia's VC arm), Kleiner Perkins, GV, and Evantic Capital, alongside the founders and operators of Stripe, Datadog, Miro, and Webflow. The opportunity At Synthesia we really care about video generation, especially about human centric avatar video generation. This led us to release models such as EXPRESS-Video , and soon our latest video model - these are the best avatar video models in the world, and we are committed to continuing and double down our efforts in leading that area. Our goal is to get to human centric video models that can generate arbitrary long videos at high resolution with arbitrary actions and events. That means continuously training large generative video models from scratch with the proprietary data pipelines and compute infrastructure to support it at scale. We are looking for a technical leader who owns the full stack end-to-end, someone who bridges pre-training and post-training, sets long-term direction alongside research leadership, and is personally present at the hardest parts of the work. If building foundation model capability from the ground up at a company genuinely committed to leading the field sounds like the right next challenge, this role was written for you. About the role Synthesia's video generation capability is core to everything we ship. It involves roughly 15 people working daily across pre-training a

Principal Software Architect — PA - Philadelphia, 1800 Arch St. Apply via Workday.

Principal Materials Engineer (Combination Devices) — Mounds View, Minnesota, United States of America. Apply via Workday.

Principal Systems Engineer — Skaneateles, NY. Apply via Workday.