Senior Software Development Engineer in Test; SDET

Position: Senior Software Development Engineer in Test (SDET
About Inworld
At Inworld, we believe that the benefits of AI should extend beyond business workflows to the applications and experiences that we enjoy every day. We began by pushing the frontier of lifelike, interactive characters for games and entertainment, pioneering realtime conversational AI ay, we apply that expertise to provide the multimodal models, pipelines and tools needed to build and evolve consumer‑scale, real‑time conversational AI applications across learning, health, social, assistants, games and media.

We’ve raised more than $125M from Lightspeed, Section 32, Kleiner Perkins, Microsoft’s M12 venture fund, Founders Fund, Meta and Stanford, among others. Our technology has powered experiences from companies such as NVIDIA, Microsoft Xbox, Niantic, Logitech Streamlabs, Wishroll, Little Umbrella and Bible Chat. We’ve also been recognized by CB Insights as one of the 100 most promising AI companies globally and have been named one of Linked In's Top 10 Startups in the USA.

About the Role
We are seeking a skilled Senior Software Development Engineer in Test (SDET), from Senior level and above, to join our team at Inworld AI.

The ideal candidate is someone who has been extremely hands‑on and productive with code throughout their SDET career: writing tests, developing stable test infrastructure, debugging flakes, and so on.

Focus Areas

Inworld Runtime - A cross‑platform library for orchestrating AI computations via graphs. Currently distributed as a NodeJS package, and we have versions for Unreal, Unity, and other platforms in the works. The focus here is on automated testing of the graph and node facilities, which expose common AI building blocks (LLM, TTS, STT, Knowledge/Rag, Memory, etc).

APIs, especially our recently announced TTS API. The focus here is automated testing the API functionality. For example, with TTS, advancing our ability to test voice quality and timestamp accuracy in an automated fashion, even though both are fuzzy problems.

UI tests of our web experience via Playwright.

Automation tools and pipelines related to testing.

Key Responsibilities

Design, create and maintain test cases and suites for our most important priorities, such as the Inworld Runtime, TTS and other APIs. Especially, demonstrate an ability to zero in on the most important things to test when new features or releases happen, and develop the tests quickly.

Expand and improve our test infrastructure, whether it’s in Playwright, Python, C++, NodeJS, Unreal, or Unity. We’ll need this person to increase stability and improve our testing leverage.

Develop and evolve other tools and CI/CD workflows related to our automated tests, including Git Hub actions/workflows.

Collaborate across roles (engineering, product, project management, etc) to ensure our results are high quality and we stay focused on the benefit to our customers and their end users.

Qualifications

5+ years of experience in software/game development with a focus on C++, C#, Python, NodeJS or similar programming languages and test automation.

Hands‑on experience with automation tools and CI/CD processes (Git Hub Actions, Jenkins, etc).

Nice‑to‑have

Background in Quality Assurance and familiarity with performance and stress testing.

Experience with test automation frameworks and tools, e.g. Playwright, Cypress.

Experience with building and testing for multiple platforms, including Android, iOS, and Mac.

Familiarity with LLM models.

Work location:

British Columbia, Canada.

The Canada base salary range for this full‑time position is between C $120,000 - C $160,000 + bonus + equity + benefits. Your recruiter can share more about the specific salary range for your targeted location during the hiring process.

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