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Job Title: Senior AI Model Fine-Tuning EngineerJob Description

As a Senior AI Model Fine-Tuning Engineer, you will play a pivotal role in enhancing the adaptability and intelligence of AI models, aligning them with real-world applications. You will employ advanced techniques such as prompt engineering, Reinforcement Learning from Human Feedback (RLHF), and instruction tuning to ensure high-quality, context-aware responses from our models.

Responsibilities

+ Lead the fine-tuning process for large pre-trained models, ensuring they behave appropriately across various contexts, such as instruction following, question answering, and task performance.

+ Design and implement prompt engineering strategies to produce accurate, relevant, and coherent outputs from AI models.

+ Apply RLHF and other behavioral fine-tuning methods to improve model alignment with user needs and ethical standards.

+ Collaborate with data teams to integrate relevant data for continuous model behavior improvement.

+ Conduct model evaluations using performance metrics such as accuracy, bias detection, and user feedback to identify areas for enhancement.

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

+ Monitor model drift to 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 fine-tuning large-scale models like GPT, T5, or BERT, with a focus on behavior and functionality.

+ Expertise in advanced tuning methods such as RLHF, prompt engineering, and zero-shot learning.

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

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

+ Understanding of LLM behaviors, including instruction-following, task completion, and ethical output considerations.

+ Experience in evaluating model performance using metrics such as BLEU, ROUGE, and perplexity.

Additional Skills & Qualifications

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

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

Work Environment

The role requires candidates to work on-site at our Phoenix, Arizona facility, which is a state-of-the-art technology environment. The work setting is highly regulated, prohibiting the use of personal cell phones. Employees benefit from an average of 85+ hours of learning programs annually, focusing on technical training, leadership development, and cross-functional mobility. Additional benefits include health coverage, wellness programs, family care support for childcare, eldercare, and pet care, fitness resources, mental health support, travel-related benefits, and funding for professional development and community service activities.

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 Aug 1, 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.