---
title: 'Staff System Test Automation Engineer, AI at Sonatus'
canonical: 'https://feeny.ai/job/staff-system-test-automation-engineer-ai-sonatus-sunnyvale-0mxmt1m3fhb2'
type: 'job'
last_seen: '2026-10-16'
---

# Staff System Test Automation Engineer, AI at Sonatus

- **Company:** Sonatus
- **Location:** Sunnyvale, CA
- **Compensation:** $149k–$204k
- **Posted:** 2026-06-30
- **Last confirmed live:** 2026-10-16
- **Apply:** https://job-boards.greenhouse.io/sonatus/jobs/5177326007

## Job description

At Sonatus, we’re driving the transformation to AI-enabled software-defined vehicles. Traditional automotive software methods can’t keep pace with consumer expectations shaped by the mobile industry—where features evolve rapidly, update seamlessly, and improve continuously. That’s why leading OEMs trust Sonatus to accelerate this shift. Our technology is already in production across more than 9 million vehicles on the road today and rapidly expanding.

Headquartered in Sunnyvale, CA, with 250+ employees worldwide, Sonatus combines the agility of a fast-growing company with the scale and impact of an established partner. Backed by strong funding and proven by global deployment, we’re solving some of the most interesting and complex challenges in the industry. Join us and help redefine what’s possible as we shape the future of mobility.

The Opportunity:

Sonatus is looking for an experienced Staff System Test Engineer with deep expertise in AI testing to lead quality efforts across AI-driven embedded and cloud-connected systems. This role centers on validating AI model testing, deployment, monitoring, and test automation within innovative automotive and cloud environments. This is a hybrid role where you must come into our Sunnyvale HQ office 3 days a week. You will be reporting to our Senior Manager, Engineering (QA Automation - Vehicle).

Role and Responsibility:

- Collaborate with diverse teams to define testing strategies for challenging and innovative projects.
- Develop and execute detailed test plans using both automated and manual testing.
- Triage integration issues, replicate problems, and assist in identifying root causes and solutions.
- Escalate potential issues (Software, Hardware, Resources) to the Project Manager/Executive team.
- Track testing activities, ensuring clear alignment across key stakeholders
- Identify areas for improvement in test coverage and methodology, providing valuable suggestions.
- Act as the gatekeeper for each release, representing the voice of customers and providing constructive feedback.
- Work with the development team to orchestrate AI model deployment, testing, and scoring.

Qualifications:

- A bachelor’s degree (MS preferred) in computer science, computer engineering, electrical engineering, or other related fields is required.
- Minimum 5 years of experience in embedded software in data centers, networking, security, cloud services, or the automotive industry, and minimum 1+ year of experience with AI model development and testing.
- Proficient in test methodologies with experience in system-level testing of physical devices.
- Familiarity with the Linux command line and proficiency in shell scripting.
- Familiarity with Quality Assurance for the Cloud Platform developed on private and public Cloud Infrastructure.
- Strong expertise in AI fundamentals, neural networks, and model deployment and ML flow.
- Strong experience in E2E testing of cloud-controlled / monitored embedded products.
- Review and challenge product requirements, design, and functional specifications.
- Proficient in developing, reviewing, and modifying Python scripts to enhance test coverage.
- Experience with designing and implementing test tools for AI/ML automation and deployment
- Familiarity with common test frameworks such as PyTest, Playwright, Behave, or similar.
- Familiarity with test tools in the data analytics space is a plus.
- Proficiency in JIRA, Jenkins, or similar tools.

Sunnyvale HQ Benefits & Perks Offered:

- Health care plan (Medical, Dental & Vision)
- Flexible and Dependent Care Expense program
- Retirement plan (401k)
- Life Insurance (Basic, Voluntary & AD&D)
- Unlimited paid time off per year, 14+ paid holidays
- Hybrid office work arrangement
- Complimentary lunches, snacks, and beverages during on-site working days
- Wellness benefit allowance
- Phone & Internet reimbursement
- Computer Accessory Allowance

The posted salary range is a general guideline and represents a good faith estimate of what Sonatus ("Company") could reasonably expect to pay for a base salary for this position. The pay offered to a selected candidate will be determined based on factors such as (but not limited to) the scope and responsibilities of the position, the qualifications of the selected candidate, departmental budget availability, geographic location and external market pay for comparable jobs. The Company reserves the right to modify this range in the future, as needed, as market conditions change.

Base Salary Pay Range $148,500—$204,000 USD

## About Sonatus

## Company Overview
- **One-liner**: Sonatus delivers an AI-powered software platform for software-defined vehicles, enabling OEMs and suppliers to reduce costs, accelerate time-to-market, and continuously improve vehicles across their lifecycle.
- **Entity Type**: Private (venture-backed)
- **Headquarters**: Sunnyvale, California, USA
- **Founded**: 2018
- **Founders**: Jeff Chou (CEO) and Yu Fang (CTO)

## Core Business
- **Primary industry/industries**: Automotive software, artificial intelligence, software-defined vehicles (SDVs)
- **Target customers**: Global automakers (OEMs) and Tier 1 suppliers (B2B, Enterprise)
- **Mission or purpose statement**: To simplify and accelerate the digital transformation of the automobile by building AI-native software that spans the full vehicle lifecycle.

## Products & Services
- **Sonatus Foundation**: A flexible vehicle software architecture that provides the foundational platform for building and evolving software-defined vehicles.
- **Sonatus Collector AI**: Enables dynamic, intelligent data collection from vehicles to drive continuous improvements and insights.
- **Sonatus AI Director**: An end-to-end toolchain for developing, deploying, and monitoring in-vehicle edge AI models.
- **Sonatus AI Technician**: AI-powered diagnostic assistants that support pre-production testing through post-sales services.
- **Sonatus Updater**: Secure, predictable management of vehicle software updates with end-to-end traceability.
- **Sonatus Automator AI**: A no-code solution for accelerating time-to-market and enabling rapid innovation.

*All products are software/SaaS or platform-based, delivered as a combination of in-vehicle software and cloud services.*

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed (private company)
- **Key Metric**: Technology deployed in **over 8 million vehicles** globally (as of 2025/2026) – [sonatus.com](https://www.sonatus.com/)
- **Notable Investors/Partners**: Backed by investors in the automotive, semiconductor, and venture capital sectors (specific names not publicly named on the website); partners with leading global automakers and Tier 1 suppliers.
- **Growth Signals**: Rapid expansion with offices in 12+ countries (USA, Canada, Ireland, France, Germany, Poland, India, China, Taiwan, South Korea, Japan, Philippines); ~300 employees (Built In); actively hiring across engineering, AI, and customer success roles.

## Competitive Advantages
- **AI-native from the ground up**: Unlike legacy automotive software providers, Sonatus built its platform specifically for AI-defined vehicles, enabling deeper integration and better performance.
- **Proven scale and trust**: Already deployed in millions of production vehicles from top global OEMs, demonstrating reliability and safety in real-world conditions.
- **Full lifecycle coverage**: Spans pre-production testing, production, and post-sales services – a rare end-to-end offering.
- **Agile integration**: Collaborates closely with OEMs and Tier 1s, using agile methods that complement traditional automotive development processes.

## Strategic Focus
- **Expand AI capabilities**: Continuing to develop agentic AI, data analytics, and automation tools for the vehicle edge and cloud.
- **New revenue streams**: Helping automakers unlock value-added services and business models based on vehicle data.
- **Global scaling**: Deepening presence in key automotive markets (Europe, Asia, North America) while hiring top AI and engineering talent worldwide.

## Why Work Here
- **Mission-driven challenges**: Employees work on cutting-edge AI and automotive problems that directly impact the future of mobility.
- **Hybrid work model**: Offices in Sunnyvale, Dublin, Paris, Seoul, and more; hybrid policy typically requires 3 days in-office per week, with some roles fully remote.
- **Collaborative culture**: Described as "talented and diverse" with specialists from automotive, data centers, semiconductors, and enterprise software.
- **Growth opportunity**: Well-funded and rapidly growing company with a proven product in production, offering the stability of a mature startup with the excitement of scaling.
- **Global presence**: Multiple office hubs and remote-friendly roles across North America, Europe, and Asia provide flexibility.

## Sources
1. [Sonatus Official Website – About](https://www.sonatus.com/company/)
2. [Sonatus Official Website – Products](https://www.sonatus.com/)
3. [Sonatus Careers Page (Greenhouse)](http://job-boards.greenhouse.io/sonatus)
4. [Sonatus Careers Page – Locations](https://www.sonatus.com/company/careers/)
5. [Built In Profile – Sonatus](https://builtin.com/company/sonatus)

## Other roles at Sonatus

- [Senior Embedded AI Engineer](https://feeny.ai/job/senior-embedded-ai-engineer-sonatus-seoul-5h64tmwwe16q) — Seoul, South Korea
- [Staff Cloud Backend Engineer](https://feeny.ai/job/staff-cloud-backend-engineer-sonatus-pune-p3100dj1krxy) — Pune, India
- [Senior Technical Recruiter](https://feeny.ai/job/senior-technical-recruiter-sonatus-sunnyvale-36af432ac39a) — Sunnyvale, CA
- [Senior Software Developer, Vehicle Applications Software](https://feeny.ai/job/senior-software-developer-vehicle-applications-software-sonatus-dublin-ka9a1rtm2jtx) — Dublin, Ireland
- [Senior Staff Technical Program Manager](https://feeny.ai/job/senior-staff-technical-program-manager-sonatus-sunnyvale-3yq3k8p80rmq) — Sunnyvale, CA
- [Senior Compliance Engineer](https://feeny.ai/job/senior-compliance-engineer-sonatus-seoul-fcnjsc3wy7rc) — Seoul, South Korea
- [Staff Machine Learning Engineer](https://feeny.ai/job/staff-machine-learning-engineer-sonatus-dublin-x5darq0g8hs2) — Dublin, Ireland
- [Senior Engineering Manager](https://feeny.ai/job/senior-engineering-manager-sonatus-dublin-hvhhwy3bfr9t) — Dublin, Ireland
- [Senior Manager, Engineering - AI Validation](https://feeny.ai/job/senior-manager-engineering-ai-validation-sonatus-sunnyvale-16f78f7ay03m) — Sunnyvale, CA
- [Software Engineer - Customer Integration](https://feeny.ai/job/software-engineer-customer-integration-sonatus-pangyo-south-ws996fsvxbrk) — Pangyo South, South Korea