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Research Engineer
About the role In this role, you will contribute end-to-end to the development of our next generation of Agentic AI Agents, helping deliver features safely and effectively to our customers. These agents power two-way communication experiences within Synthesia using conversational AI technologies. Your work will sit at the intersection of user experience, infrastructure, and machine learning. You’ll contribute across infrastructure development, prompt engineering, and direct interaction with large language models (LLMs). You will take ownership of projects that may span several months, breaking down complex initiatives into smaller deliverables that can be shipped, validated, and improved iteratively. Working closely with the Product Manager assigned to your area, you’ll contribute ideas, focus on solving meaningful business problems, and help shape the future direction of the product. You’ll also be responsible for measuring the impact of your work by leveraging established data pipelines and analytics frameworks, using insights to refine solutions and align outcomes with business objectives. Additionally, you’ll help influence the longer-term direction of the team, ensuring we continue building the engineering capabilities required to address future challenges over the next 6–12 months.
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What we're looking for At least 7 years of software engineering experience, including 3+ years operating at a senior or lead level Experience working within high-performing engineering organizations operating at scale, whether in a fast-growing scale-up or an established company recognized for strong engineering practices Ability to work across the stack, with deep expertise in backend systems, machine learning, and server-side technologies; backend-focused engineers are welcome if comfortable occasionally contributing to frontend initiatives Relevant experience building enterprise-grade SaaS products, particularly in areas such as AI-powered video generation, billing platforms, experimentation frameworks, video delivery systems, online editing tools, real-time collaboration platforms, or similar products Strong focus on business impact and commercial outcomes Previous experience leading smaller engineering teams is considered a plus
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Why join us? We’re living through one of the most exciting periods in the evolution of AI. The next decade will define a new generation of iconic technology companies, and we believe Synthesia is positioned to be one of them.
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