G2i Inc.
FullStack Developer - On Site in San Francisco
G2i Inc., San Francisco, California, United States, 94199
Principal / Senior Full-Stack Engineer (AI Agents) – San Francisco
Location:
San Francisco, CA (4th & King) —
100% on-site, 5 days/week Employment Type:
Full-time Salary Range: Principal Engineer:
$225k–$275k + meaningful equity
Senior/Staff Engineer:
Flexible depending on autonomy and experience
About the Company
We are a fast-growing, 10-person startup based in San Francisco, building next-generation
AI agents
powered by the latest models from OpenAI and Anthropic. Since January 2023, the team has been designing, testing, breaking, and refining agent architectures—developing rare and deeply practical expertise in the space. We offer a highly collaborative environment with significant ownership, rapid iteration, and the opportunity to shape core parts of the product. The Opportunity
We are hiring
5–10 Full-Stack Engineers
over the next 12 months to accelerate the development and scalability of our AI Agent platform. We’re looking for highly autonomous engineers with deep technical experience who thrive in ambiguous, fast-paced environments. Responsibilities
Design, develop, and maintain full-stack features using
TypeScript .
Build and optimize
AI agents
using state-of-the-art LLMs.
Work with
GCP (primary)
or AWS, infrastructure-as-code, and deployment pipelines.
Take full ownership of projects—from ideation and architecture to implementation and maintenance.
Develop reusable tools, prompts, and frameworks for rapid agent creation.
Proactively identify problems, propose solutions, and execute independently.
Contribute to architectural decisions and engineering best practices.
Ideal Candidate Profile
Experience
10+ years of engineering experience , used as a proxy for deep ownership—not just tenure.
Strong experience in
B2B SaaS
environments.
Full-stack background with a focus on
TypeScript .
Cloud experience with
GCP
(preferred) or AWS.
Prior AI agent experience is a plus but
not required .
Technical Skills
Full-stack TypeScript (frontend + backend).
Strong system design and architectural skills.
Experience with IaC, CI/CD, deployment workflows.
Familiarity with LLMs and genuine enthusiasm for AI innovation.
Mindset
Extreme ownership:
Takes responsibility for outcomes end-to-end.
High agency:
Proactively finds and solves the right problems.
Comfort with ambiguity:
Thrives where specs evolve quickly and iteration is constant.
Not a good fit:
Engineers who need rigid scope, structure, or step-by-step direction.
Compensation & Benefits
Competitive salary: Principal: $225k–$275k
Senior/Staff: flexible based on autonomy and performance
Meaningful equity , benchmarked against Pave and Color.
Health, dental, and vision insurance ( basic plan fully covered ).
Commuter benefits (parking & train).
Catered meals and office snacks.
High-impact role within a small, senior team.
Interview Process
Hiring Manager Screen
(remote)
Coding Challenge
(remote)
Onsite in SF: 45 min: System Design
45 min: Past Projects Deep Dive
45 min: Founder Conversation / Collaboration
Offer stage
after references
#J-18808-Ljbffr
Location:
San Francisco, CA (4th & King) —
100% on-site, 5 days/week Employment Type:
Full-time Salary Range: Principal Engineer:
$225k–$275k + meaningful equity
Senior/Staff Engineer:
Flexible depending on autonomy and experience
About the Company
We are a fast-growing, 10-person startup based in San Francisco, building next-generation
AI agents
powered by the latest models from OpenAI and Anthropic. Since January 2023, the team has been designing, testing, breaking, and refining agent architectures—developing rare and deeply practical expertise in the space. We offer a highly collaborative environment with significant ownership, rapid iteration, and the opportunity to shape core parts of the product. The Opportunity
We are hiring
5–10 Full-Stack Engineers
over the next 12 months to accelerate the development and scalability of our AI Agent platform. We’re looking for highly autonomous engineers with deep technical experience who thrive in ambiguous, fast-paced environments. Responsibilities
Design, develop, and maintain full-stack features using
TypeScript .
Build and optimize
AI agents
using state-of-the-art LLMs.
Work with
GCP (primary)
or AWS, infrastructure-as-code, and deployment pipelines.
Take full ownership of projects—from ideation and architecture to implementation and maintenance.
Develop reusable tools, prompts, and frameworks for rapid agent creation.
Proactively identify problems, propose solutions, and execute independently.
Contribute to architectural decisions and engineering best practices.
Ideal Candidate Profile
Experience
10+ years of engineering experience , used as a proxy for deep ownership—not just tenure.
Strong experience in
B2B SaaS
environments.
Full-stack background with a focus on
TypeScript .
Cloud experience with
GCP
(preferred) or AWS.
Prior AI agent experience is a plus but
not required .
Technical Skills
Full-stack TypeScript (frontend + backend).
Strong system design and architectural skills.
Experience with IaC, CI/CD, deployment workflows.
Familiarity with LLMs and genuine enthusiasm for AI innovation.
Mindset
Extreme ownership:
Takes responsibility for outcomes end-to-end.
High agency:
Proactively finds and solves the right problems.
Comfort with ambiguity:
Thrives where specs evolve quickly and iteration is constant.
Not a good fit:
Engineers who need rigid scope, structure, or step-by-step direction.
Compensation & Benefits
Competitive salary: Principal: $225k–$275k
Senior/Staff: flexible based on autonomy and performance
Meaningful equity , benchmarked against Pave and Color.
Health, dental, and vision insurance ( basic plan fully covered ).
Commuter benefits (parking & train).
Catered meals and office snacks.
High-impact role within a small, senior team.
Interview Process
Hiring Manager Screen
(remote)
Coding Challenge
(remote)
Onsite in SF: 45 min: System Design
45 min: Past Projects Deep Dive
45 min: Founder Conversation / Collaboration
Offer stage
after references
#J-18808-Ljbffr