First Resonance · 19 hours ago
Founding Software Developer in Test (SDET)
Los Angeles
Full-time
Onsite
Senior Level
$155K/yr - $175K/yr
5+ years expFirst Resonance is a company focused on accelerating hardware development for innovative industries. As the founding Software Developer in Test (SDET), you will take ownership of the automated testing ecosystem, architecting frameworks and establishing quality culture within the engineering team.
Industrial AutomationManufacturingOperating SystemsSoftware
No H1B
Responsibilities
Roadmap Definition: Independently define and execute the automation strategy, prioritizing coverage areas (API vs. UI) based on risk and business value
Self-Directed Management: Act as a "team of one" initially—managing your own backlog, setting technical standards, and providing regular status updates to engineering leadership
Process Evangelism: Educate the broader engineering team on BDD practices, helping developers write better feature files and understand the value of the Playwright/Cucumber stack
Architect & Maintain: Own the end-to-end lifecycle of our Playwright and TypeScript framework, utilizing the Page Object Model (POM) and custom Cucumber World contexts
Performance & Scalability: Independently design and execute load testing strategies using K6 to ensure our infrastructure scales with our user base
Tooling & Analytics: Manage our Testomatio integration, ensuring that test reporting provides actionable insights for stakeholders who may not be QA experts
React/Next.js Integration: Use your knowledge of React to dive into the codebase, understand component structure, and ensure our frontend is built with testability in mind (e.g., advising on data-attributes and accessibility roles)
CI/CD Leadership: Take full responsibility for the stability of tests in the CI pipeline, managing parallelization, retries, and @quarantine tags to ensure the build stays green
Qualification
Required
5+ years of professional experience in software testing or development, with at least 3 years in a senior or lead automation role where you had significant input on framework design
Proven track record of working as the sole SDET or leading a testing function in a startup environment where you had to manage yourself
Expert-level proficiency in TypeScript (async/await, OOD) and Playwright
Deep experience implementing Cucumber from scratch, including defining step definition patterns that are scalable
Ability to translate complex technical testing concepts into clear 'business risk' language for engineering leaders
You don't wait for a ticket to fix a flaky test or a slow CI build; you identify the bottleneck and solve it independently
Preferred
A strong interest or background in Frontend Engineering
Comfortable reading React code, understanding hooks/state, and using Browser DevTools to diagnose UI bugs
Benefits
Health Insurance; medical, vision, dental, & life insurance.
Paid Parental Leave.
Employee Stock Option Plan.
Team outings, group lunches, open office, happy hours.
Paid holidays, sick days.
Flexible Friday and PTO.
401K.
Company
First Resonance
First Resonance develops ION Factory OS, a robust manufacturing production software that provides data insights and improves scalability.
11-50 employees
Funding
Current Stage
Growth StageTotal Funding
$34.12MKey Investors
Third PrimeEmerson VenturesCraft Ventures
2024-11-06Series C· $10.82M
2023-09-27Series Unknown· $4M
2021-12-09Series A· $14M
Leadership Team
Tim Gentry
Chief Operating Officer
Recent News
Business Insider
2025-12-25
Company data provided by crunchbase