Sr. QA​/Tester

AI/LLM Test Engineer

We are seeking an experienced AI/LLM Test Engineer who combines strong troubleshooting expertise, prompt engineering knowledge, and software testing experience to help validate and optimize AI‑driven applications. This role focuses on identifying issues, improving model performance, and ensuring high‑quality software delivery across complex systems.

• Investigate and resolve complex technical issues through systematic debugging techniques.
• Analyze application and system logs to identify root causes and recommend solutions.
• Perform performance profiling and diagnostics to improve application efficiency and reliability.
• Support incident response activities, including issue triage, analysis, and resolution.

• Design, develop, and optimize prompts for various AI models, user personas, and business use cases.
• Apply few‑shot and zero‑shot prompting techniques to guide model behavior and improve output quality.
• Create prompts that enable seamless interaction with APIs, databases, and external tools.
• Evaluate and refine prompt performance to support accuracy, consistency and user experience.

• Execute end‑to‑end functional testing for AI‑enabled and traditional software applications.
• Utilize test management and automation tools such as Jira, qTest, Merlin, Selenium, and WebdriverIO.
• Track, document, and manage defects throughout the testing lifecycle.
• Collaborate with development teams to ensure quality standards are met across releases.
• Apply strong knowledge of the Software Development Life Cycle (SDLC) and Software Testing Life Cycle (STLC) to support testing strategy and execution.

• 5+ years of experience in troubleshooting, debugging, and production support.
• 2+ years of experience in prompt engineering or working with generative AI/LLM‑based solutions.
• 5+ years of experience in functional testing and quality assurance.
• Hands‑on experience with test management, automation, and defect‑tracking tools.
• Strong analytical and problem‑solving skills with the ability to identify root causes and drive resolution.
• Excellent communication and collaboration skills in cross‑functional environments.

• Experience testing AI, machine learning, or generative AI applications.
• Familiarity with API testing and integrations.
• Exposure to cloud‑based applications and modern software development practices.
• Experience working in Agile environments.

EEO

Employer:

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law.

Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.