Principal/Staff Software Engineer

Synthesia•Seattle, WA

About The Position

You will work on core enterprise platform systems, focusing on services that ensure Synthesia is secure, reliable, and scalable for our largest customers. You will contribute to our new suite of APIs that will unlock our market leading Avatar technology to be utilised by external creative tools. We are an AI native company and use the most powerful assistant tools on a daily basis to increase our speed of development, automate repetitive tasks and widen the scope of what the team can worked on. This includes Claude and Cursor. You will have ownership of projects that span months and multiple teams, requiring you to break down complex, ambiguous problems into clear steps that can be delivered and validated iteratively. Engineers within Synthesia are empowered to contribute heavily to product discussions and build with both user and business considerations in mind. Impact is key to everything we do here. You will work closely with product, security, legal, and infrastructure partners, and will be expected to translate business and regulatory requirements into scalable technical solutions. You will evaluate your work through system health and reliability metrics, leveraging observability and monitoring to ensure systems meet performance, reliability, and compliance expectations. You will consider the long-term direction of the platform, ensuring that the systems we build today can support future scale, enterprise requirements, and evolving regulatory needs.

Requirements

At least seven (7) years of experience as a software engineer, with experience operating at a senior or staff level.
Experience building and operating systems at scale, ideally within platform or enterprise-focused teams.
Strong expertise in development and system design.
Experience across the stack is a plus, our tech stack is Python, React & AWS.
Relevant engineering experience for teams building enterprise-grade systems; this may include areas such as security, compliance, data handling, access control, multi-tenant systems, or platform services.
Experience owning systems in production, including observability, incident response, and reliability improvements.
Ability to work across teams and functions, aligning with stakeholders and driving technical initiatives end-to-end.
Strong alignment with building reliable, scalable systems that support long-term product and business goals.

Nice To Haves

Previous experience leading projects or mentoring other engineers is a plus.

Responsibilities

Work on core enterprise platform systems, focusing on services that ensure Synthesia is secure, reliable, and scalable for our largest customers.
Contribute to new suite of APIs that will unlock market leading Avatar technology to be utilised by external creative tools.
Have ownership of projects that span months and multiple teams, requiring you to break down complex, ambiguous problems into clear steps that can be delivered and validated iteratively.
Contribute heavily to product discussions and build with both user and business considerations in mind.
Work closely with product, security, legal, and infrastructure partners, and will be expected to translate business and regulatory requirements into scalable technical solutions.
Evaluate work through system health and reliability metrics, leveraging observability and monitoring to ensure systems meet performance, reliability, and compliance expectations.
Consider the long-term direction of the platform, ensuring that the systems we build today can support future scale, enterprise requirements, and evolving regulatory needs.