Senior Software Test Engineer

Company: GFiber
Location: Mountain View
Posted on: February 18, 2026

Job Description:

Job Description Job Description At GFiber, we believe that great internet has the power to drive innovation, strengthen communities, enable the impossible, and do all the everyday things that make all of our world go round. And the job of creating better internet is never done - so we're growing! Our team is committed to building a place where people who want to make a difference can grow their careers and find their spot to belong. GFiber is an Alphabet company that brings Google Fiber and Google Fiber Webpass internet services to homes and businesses across the United States. Our teams are expanding as we connect more cities and people to exceptional internet. The application window will be open until at least February, 20th, 2026 . This opportunity will remain online based on business needs which may be before or after the specified date. Role Description As a Senior Software Quality Engineer at GFiber, you will be the guardian of quality for our most complex enterprise systems and emerging AI implementations. This is a high-impact role that bridges the gap between deep CRM/OSS domain expertise and modern Quality Engineering. You will not only architect advanced automation frameworks in Java or Kotlin but also pioneer testing methodologies for Generative AI and LLMs. Beyond the code, you will serve as a critical bridge to the field, translating high-pressure production issues into long-term business solutions and strategic engineering improvements. In this role, you'll: Enterprise Automation: Architect and scale full-stack automation frameworks (Java/Kotlin) across CRM, BSS, and OSS stacks. Drive E2E validation for UI, API, and backend layers to ensure seamless CI/CD integration and zero-defect delivery. AI Quality Engineering: Pioneer testing strategies for Generative AI and LLMs. Develop rigorous frameworks to mitigate hallucinations, bias, and toxicity, using advanced prompt engineering to align model outputs with business safety standards. Strategic Escalation Lead: Act as the primary technical authority for field escalations. Conduct deep-dive root-cause analysis on production issues and distill complex technical findings into actionable insights for executive stakeholders. Architect and execute end-to-end test strategies across the GFiber software ecosystem, ensuring rigorous quality standards throughout the entire SDLC. Orchestrate complex integration testing for critical business systems, including CRMs (Salesforce), OSS, Billing, and Provisioning, to ensure zero-defect transitions across the customer lifecycle. Design specialized QA frameworks for Generative AI and LLMs, utilizing advanced prompt engineering and evaluation metrics to mitigate hallucinations, bias, and toxicity while ensuring alignment with core business logic. Build and maintain robust, full-stack automation suites using Java or Kotlin, targeting UI, API, and backend layers to accelerate CI/CD pipelines and ensure system stability. Act as the primary engineering lead for field escalations, driving root-cause analysis (RCA) for complex production issues and translating technical defects into clear, actionable executive communications for stakeholders. At a minimum we'd like you to have: 10 years of experience in Software Quality Engineering, including at least 5 years dedicated to architecting and developing automated test solutions. Experience coding in Java or Kotlin for building scalable automation frameworks. Experience in CRM, BSS, and OSS testing, encompassing functional, integration, regression, and performance/load testing. Experience testing AI models and LLM architectures, including the development of prompt-based validation strategies. Experience with SDLC within Agile/Scrum environments, with a focus on modern testing methodologies (TDD/BDD) It's preferred if you have: Salesforce Certifications (Platform Developer or Administrator). Experience coding in Python for AI workflows. Experience with cloud platforms (AWS, Azure, or GCP) for AI model hosting. Experience with load/performance testing and security testing principles. Problem handling skills with the ability to navigate high-pressure field escalation scenarios. The US base salary range for this full-time position is between $136,000 - $198,000 bonus cash award benefits. As pay varies by location, your recruiter will share more about the specific salary range for your targeted location during the hiring process. LI-DNI GFiber is committed to equal opportunity employment regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, gender identity, age, citizenship, marital status, disability or Veteran status. Disclosure is voluntary, and this information will be kept confidential in compliance with Google's Candidate Privacy Policy. For more information please refer to our Equal Employment Opportunity Policy and the EEOC's "Know your rights: workplace discrimination is illegal" (PDF). It's important to us to create an accessible, inclusive workplace for everyone. If you have a need that requires accommodation, please let us know by completing our accommodations for applicants form. Our candidate accommodations team will then connect with you to confidentially discuss your options.

Keywords: GFiber, Carmichael , Senior Software Test Engineer, IT / Software / Systems , Mountain View, California