Principal/Staff Software Engineer

Synthesia

Software Engineer focusing on secure, reliable, and scalable systems for AI video platform. Collaborating across teams to develop APIs and address enterprise requirements.

Posted 7/9/2026full-timeSeattle • Washington • 🇺🇸 United StatesLead💰 $200,000 per yearWebsite

Tech Stack

Tools & technologies

AWSPythonReact

About the role

Key responsibilities & impact

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.
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.
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

What you’ll need

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

Benefits

Comp & perks

25 days of leave
Local holidays

ATS Keywords

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Hard Skills & Tools

Software EngineeringSystem DesignAPI DevelopmentIncident ResponseReliability ImprovementsMulti-Tenant SystemsData HandlingAccess ControlEnterprise-Grade SystemsScalable Systems

Soft Skills

Cross-Functional CollaborationStakeholder AlignmentProject OwnershipMentoring