AI/LLM Engineer

Gap International; Philadelphia (Philadelphia County); On-site; USD 120,000 - 200,000; Full time

Job summary

Gap International seeks an AI/LLM Engineer to design and implement advanced AI systems centered on large language models. You will lead fine-tuning, RAG, and prompt engineering to tackle enterprise challenges, collaborating with cross-functional teams to integrate AI into internal tools and workflows.

The role emphasizes scaling LLM deployments, architectural leadership, and staying current with NLP advances while mentoring teammates in a high-performance environment.

Qualifications

• Master's degree in Computer Science, Engineering, or related field; PhD preferred; applicants with a Master’s must have at least 2 years of relevant work experience.
• Strong experience developing and deploying LLM-based applications, including fine-tuning and prompt engineering.
• Proficiency in Python and deep learning frameworks (PyTorch or TensorFlow) and Git/GitHub for version control.
• Familiarity with cloud AI services and APIs (OpenAI, AWS, Azure, GCP) and deploying models at scale.
• Solid understanding of NLP, transformer architectures, and evaluation metrics for LLM systems.
• Experience designing end-to-end training pipelines, including data shaping, model tuning, and optimization.
• Excellent communication of complex concepts across teams and to non-technical stakeholders.
• Contributions to AI/ML community through publications, open-source, or thought leadership.

Responsibilities

• Design and implement AI systems using Large Language Models to solve enterprise challenges.
• Fine-tune foundation models and apply RAG and prompt engineering techniques.
• Collaborate with cross-functional teams to integrate AI into internal tools and products.
• Evaluate and experiment with frameworks like Hugging Face, LangChain, OpenAI, Claude, LLaMA.
• Build and deploy scalable LLM solutions across cloud and on-prem environments.
• Lead architectural decisions and reusable frameworks for evaluation, optimization, deployment.
• Design, develop, and optimize autonomous AI agents.
• Apply latest NLP research to practical use cases and stay current.

Skills

LLM development

Prompt engineering

Python programming

Deep learning (PyTorch/TensorFlow)

Cloud AI services (OpenAI/AWS/Azure/G‑

NLP concepts

Training pipelines

Technical communication

MLOps / deployment

Education

Master's degree in Computer Science or Engineering

PhD preferred

Tools

Hugging Face

LangChain

OpenAI

Claude

LLaMA

GitHub

Job description

ABOUT GAP INTERNATIONAL

Gap International is a global consulting firm that partners with executives to achieve breakthrough business results. We’re a team of passionate problem-solvers committed to innovation and transformation. As part of our growth strategy, we’re expanding our AI capabilities to deliver cutting-edge solutions across the enterprise. This role offers the opportunity to work on impactful projects, including dialog-driven learning and business process acceleration.

ABOUT THE ROLE

You will be part of a tight knit, highly collaborative research and development team focused on building real-world AI applications. As an AI/LLM Engineer, you will lead the design and implementation of advanced systems centered on large language models and natural language understanding. Your work will involve techniques such as fine-tuning, retrieval-augmented generation (RAG), and prompt engineering to solve meaningful business challenges.

You will work closely with teams to explore data, shape requirements, and integrate AI capabilities into internal tools and digital products. Your contributions will drive innovation and shape transformative projects across the organization.

RESPONSIBILITIES

• Design and implement AI systems using Large Language Models (LLMs) to solve enterprise challenges and improve operational efficiency.
• Fine-tune foundation models and apply techniques such as retrieval-augmented generation (RAG) and prompt engineering.
• Collaborate with cross-functional teams to integrate AI capabilities into internal tools, workflows, and digital products.
• Evaluate and experiment with frameworks and tools like Hugging Face, LangChain, OpenAI, Claude, and LLaMA.
• Build and deploy scalable LLM solutions across cloud-based and local environments, leveraging container orchestration tools where applicable.
• Lead architectural decisions and guide implementation of reusable frameworks for model evaluation, optimization, and deployment.
• Design, develop, and optimize autonomous AI agents.
• Apply emerging research to practical use cases, staying current with advancements in NLP and generative AI.
• Mentor team members and contribute to a collaborative, high-performance development environment.

REQUIREMENTS

• Minimum Master’s degree in Computer Science, Engineering, or a related technical field (PhD preferred); candidates with a Master’s must have at least 2 years of relevant work experience.
• Strong experience developing and deploying LLM-based applications, including fine-tuning and prompt engineering.
• Proficiency in Python and deep learning frameworks such as PyTorch or TensorFlow, along with version control tools like GitHub.
• Familiarity with cloud-based AI services and APIs (e.g., OpenAI, AWS, Azure, GCP) and experience deploying models in scalable environments.
• Solid understanding of NLP concepts, transformer architectures, and evaluation metrics for LLM systems.
• Experience designing and implementing end-to-end training pipelines, including data shaping, model tuning, and performance optimization.
• Ability to communicate complex technical concepts clearly across teams and to non-technical stakeholders.
• Contributions to the AI/ML community through publications, open-source projects, or thought leadership environment.

GAP INTERNATIONAL ASSOCIATES

• Purposeful people at work impacting companies around the world.
• People who thrive in a learning environment and enjoy learning, growing, and performing at their best; energized to continually push beyond their comfort zone.
• Comfortable with ambiguity; eager to take on things they don't know how to do.
• Curious and flexible when it comes to their own growth and development, as well as receptive to coaching and feedback to maximize their potential.
• Willing to communicate and contribute thoughts, insights and new ideas to senior leaders both internally and externally.

WHAT WE OFFER

• A role with significant impact and visibility within the company.
• Opportunities for professional growth and development in a supportive and collaborative environment.
• Competitive salary commensurate with experience.
• A dynamic and inclusive company culture.

Gap International associates are based out of our corporate office in the Philadelphia metropolitan area. In order to be considered for this role, applicants should be legally authorized to work in the US.