Lead Principal AI Engineer

Lead Principal AI Engineer

Job type:
Full Time
· Department: CTO
· Work type:
Remote

United States

We are seeking a Lead Principal AI Engineer who brings a foundational, mathematically

grounded understanding of classical Machine Learning, combined with deep hands‑on

expertise in modern Generative AI, Large Language Models (LLMs), and Agentic Frameworks.

In this role, you will serve as both a technical authority and a strategic leader. You will architect

end‑to‑end AI systems--from dataset curation and fine‑tuning to building agentic workflows

and automated evaluation suites--while working directly with enterprise customers to translate

complex business problems into production‑grade solutions.

At iBase‑t We are building Frontier--the industry’s first true, purpose‑built AI solution for

Aerospace & Defense (A&D) manufacturing. A&D manufacturing represents one of the most

complex, high‑stakes engineering environments in the world, where precision, traceability, and

strict compliance are non‑negotiable.

We are seeking a Lead Principal AI Engineer to pioneer this new vector. You will be a

foundational technical architect for Frontier, combining deep, mathematically grounded

Machine Learning with cutting‑edge Generative AI, LLMs, and autonomous agentic

frameworks.

In this role, you will bridge the gap between advanced AI research and real‑world industrial

impact--architecting agentic workflows, domain‑specific fine‑tuning pipelines, and evaluation

suites designed to solve complex manufacturing, quality engineering, and operational

challenges while interfacing directly with key customer leadership.

AI Architecture & Agentic Frameworks

• Design, build, and deploy production‑grade agentic frameworks and multi‑agent workflows from scratch using clean, scalable Python code.
• Architect custom tool‑use protocols, memory systems, and planning mechanisms for autonomous AI agents.
• Bridge classical ML approaches with generative paradigms to build hybrid, resilient systems.

LLM Lifecycle, Fine‑Tuning & Evals

• Drive dataset curation, data synthesis, instruction‑tuning, and domain‑specific dataset generation pipelines.
• Fine‑tune open‑source and proprietary models using advanced techniques (e.g., LoRA/QLoRA, PEFT, DPO/RLHF).
• Build rigorous, repeatable evaluation frameworks (e.g., benchmark design, LLM‑as‑a‑judge, custom metric scoring) to ensure reliability, safety, and performance.

Technical Leadership & Problem Solving

• Serve as the principal technical lead across cross‑functional engineering efforts, setting coding standards, architecture patterns, and technical strategy.
• Break down complex, ambiguous business challenges into actionable, high‑impact machine learning architectures.
• Mentor senior and mid‑level engineers in production ML best practices.

Customer Engagement & Technical Strategy

• Act as a primary technical lead in client‑facing environments, presenting architectural designs, articulating trade‑offs, and driving integration with customer engineering teams.
• Gather requirement feedback from stakeholders to directly shape product roadmaps and technical specs.

• Education:
  
  Master’s or Ph.D. in Computer Science, Machine Learning, Data Science, Electrical Engineering, or a related quantitative discipline.
• US
  
  Experience:
  
  Minimum 5+ years of professional engineering experience either as ML engineer or AI engineer.
• Core ML First:
  Strong, foundational understanding of core machine learning principles (optimization, statistical modeling, feature engineering, classic supervised/unsupervised learning, and deep learning architectures) prior to LLMs.
• LLM & Fine‑Tuning Mastery:
  Hands‑on experience with dataset curation, parameter‑efficient fine‑tuning (PEFT), and developing comprehensive model evaluation (evals) methodologies.
• Agentic AI Systems:
  Proven track record of designing, building, and deploying AI agent architectures, autonomous workflows, and tool integration frameworks.
• Software Engineering:
  Advanced Python proficiency, with strong software engineering practices (clean code, CI/CD, modular architecture, performance profiling).
• Client‑Facing Leadership:
  Excellent communication and consultative skills with experience interfacing directly with external clients, technical decision‑makers, and executive stakeholders.

• Prior exposure to manufacturing execution systems (MES), PLM/ERP systems, or industrial operations context.
• Experience deploying AI models within secure, air‑gapped, or highly compliant environment constraints (e.g., FedRAMP, ITAR).
• Background in vector databases, hybrid search architectures, and complex graph‑based RAG.