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AI Model Fine-Tuning Engineer - Phoenix, AZ

We are actively hiring AI Engineers for our growing Semiconductor Manufacturing facilities in Phoenix, AZ! As a Junior, Intermediate, or Sr. level AI Model Fine-Tuning Engineer, you will play a crucial role in enhancing the adaptability and intelligence of AI models, ensuring they align seamlessly with real-world applications. Utilizing advanced techniques, you will focus on refining model responses to be context-aware and of high quality. This is an excellent opportunity to continue cutting-edge work within both AI and Semiconductor Manufacturing - Two highly competitive and beneficial fields to work in.

Responsibilities

+ Lead the fine-tuning process for large pre-trained models, ensuring they behave appropriately in diverse contexts such as instruction-following, answering questions, or performing tasks.

+ Design and implement prompt engineering strategies to enhance model output accuracy, relevance, and coherence.

+ Apply Reinforcement Learning from Human Feedback (RLHF) and other behavioral fine-tuning methods to improve alignment with user needs and ethical standards.

+ Collaborate with data teams to integrate relevant data and continuously improve model behavior.

+ Conduct model evaluations using various performance metrics, including accuracy, bias detection, and user feedback, to identify areas for improvement.

+ Iterate and experiment with different fine-tuning methods to achieve optimal performance for specific use cases.

+ Monitor model drift and ensure models remain consistent, reliable, and safe over time.

Essential Skills

+ Bachelor's degree in Computer Science, Data Science, or a related field.

+ 5+ years of experience in fine-tuning large-scale models like GPT, T5, or BERT, focusing on behavior and functionality.

+ Expertise in RLHF, prompt engineering, and zero-shot learning.

+ Proficiency in Python and experience with libraries for model fine-tuning such as Transformers and DeepSpeed.

+ Experience with popular transformer architectures and frameworks like Hugging Face, TensorFlow, or PyTorch.

+ Deep understanding of LLM behaviors, including instruction-following, task completion, and ethical considerations.

Additional Skills & Qualifications

+ Experience with ethical AI and safety considerations, including bias minimization and handling adversarial inputs.

+ Experience with model deployment and real-time experimentation, such as A/B testing.

+ Experience levels include:

+ Junior - 0 to 2 years of professional experience, with a strong AI-centered degree and internship experience.

+ Intermediate - 1 to 3 years of relevant professional experience

+ Senior - 3+ years of relevant professional experience

Work Environment

The Arizona fab is state-of-the-art, but still undergoing expansion and construction in some areas, which can create a transitional atmosphere. The environment offers exposure to cutting-edge semiconductor technology and complex systems, which allows engineers and technicians to stay competitive with their skills. Candidates must be willing and able to work on-site at our Phoenix, Arizona facility (relocation assistance is offered). The work environment is highly regulated, with state-of-the-art technology and facilities. Personal cell phones are not permitted on-site. The company allows for an average of 85+ hours of learning programs per employee annually, as well as a strong focus on technical training, leadership development, and cross-functional mobility.

Pay and Benefits

The pay range for this position is $95000.00 - $150000.00/yr.

Medical & Insurance: Health coverage, wellness programs, and supplemental insurance.Family Care: Support for childcare, eldercare, and even pet care (a new addition).Wellness: Fitness, mental health resources, and travel-related benefits.Development & Volunteering: Funding for professional development and community service activities.

Average of 85+ hours of learning programs per employee annually.Strong focus on technical training, leadership development, and cross-functional mobility

Workplace Type

This is a fully onsite position in Phoenix,AZ.

Application Deadline

This position is anticipated to close on Jul 17, 2025.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 30,000 consultants and more than 4,500 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing due to a disability, please email [email protected] (%[email protected]) for other accommodation options.