Principal AI Engineer & Tech Lead (Remote)

FullStack; Billings (MT); Remote; USD 96,000 - 165,000; Part time

Benefits offered by this job

Competitive salary

PTO

Remote work

Health insurance

401(k) match

Career advancement

Education opportunities

Job summary

FullStack is seeking a Part-time Principal AI Engineer (Agentic AI) / Tech Lead to join our team. You will work with top-tier clients in two modes: team augmentation or design & build on a FullStack product team, applying your deep expertise in AI systems.

We require 8+ years of experience, strong architecture skills, and advanced English. This role is 100% remote in the United States with no visa sponsorship.

Qualifications

• 8+ years of professional software engineering experience.
• Experience leading engineering teams through end-to-end technical delivery, defining architecture, and translating client requirements into technical roadmaps.
• Advanced English is required.
• Successful completion of a four-year college degree is required.
• Expertise in designing and shipping production-grade agentic AI applications and complex LLM architectures.
• Has integrated LLM provider APIs, autonomous agent frameworks, and custom tool-calling mechanisms into software products.
• Track record of acting as a technical liaison, interfacing with clients/stakeholders to scope technical work and own end-to-end delivery.
• Solid background in system architecture, distributed systems, and modern API integrations.
• Has owned CI/CD deployment pipelines, automated testing, and failure/retry strategies for AI workflows.
• Availability to work 20+ hours per week overlapping with US Pacific Time (PT) business hours.
• Ability to work through new and difficult issues and contribute to libraries as needed.
• Ability to create and maintain continuous integration and delivery of applications.
• Forensic attention to detail.
• A positive mindset and a can-do attitude.
• Experience working on Agile/Scrum teams.
• Meaningful experience working on large, complex systems.
• Ability to take extreme ownership over your work.

Responsibilities

• Team augmentation into our client's team and collaborate with their designers and engineers daily.
• Design & Build: contribute to a FullStack product team to build and deliver a product to clients.

Skills

Leadership

Agentic AI

LLM architectures

API integrations

CI/CD pipelines

Agile/Scrum

English proficiency

System design

Education

Bachelor's degree

Tools

Claude Code

Gemini CLI

Copilot CLI

Codex

Job description

FullStack is seeking a Part-time Principal AI Engineer (Agentic AI) / Tech Lead to join our team. You will work with top-tier clients in two modes: team augmentation or design & build on a FullStack product team, applying your deep expertise in AI systems.

We require 8+ years of experience, strong architecture skills, and advanced English. This role is 100% remote in the United States with no visa sponsorship.