Principal/Staff Software Engineer

Seattlefull timeOn Site

senior

H1B: no

Synthesia The Principal/Staff Software Engineer at Synthesia works on core enterprise platform systems to ensure security, reliability, and scalability for large customers. The role includes ownership of multi-team projects and developing APIs for external creative tools.

Responsibilities

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.
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.

Qualification

Experience owning systems in productionStrong alignment with building reliable

Required

At least seven (7) years of experience as a software engineer, with experience operating at a senior or staff level.
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.
Previous experience leading projects or mentoring other engineers is a plus.