Senior Software Engineer (AI Agents)

Arcadia; San Francisco (CA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Meaningful equity

Direct collaboration with founders

High-trust environment with autonomy

Job summary

Arcadia is looking for a Senior Software Engineer (AI Agents) in San Francisco. In this pivotal role, you will build core systems for an intelligent automation platform used in operations-heavy industries. Your responsibilities will include designing production-grade LLM systems, collaborating closely with the founding team, and making crucial architectural contributions. The ideal candidate has over 6 years of experience in software engineering, particularly in high-growth environments, and a strong interest in applied AI.

Qualifications

• 6+ years of professional software engineering experience.
• Experience in designing and shipping production backend systems and APIs.
• Hands-on experience with LLM-powered or agent-based systems.

Responsibilities

• Build and scale core automation and AI agent systems.
• Design and deploy agent-based LLM components for reasoning and decision-making.
• Collaborate with users to understand workflows and ship high-impact solutions.

Skills

Software engineering in high-growth environments

Application of AI in complex workflows

0→1 product development

Clear communication and collaboration

Job description

A fast-moving AI startup in the logistics space is hiring a Senior Software Engineer (AI Agents) to build the core systems behind an intelligent automation platform used in highly complex, operations-heavy industries. You’ll design and ship production-grade LLM systems, contribute across the stack, and play a key role in evolving both the product and technical architecture.

This is a high-ownership, high-impact role where you’ll collaborate closely with the founding team, contribute to major architectural decisions, and build technology that solves real-world operational problems at scale.

What You’ll Do

• Build and scale the core automation and AI agent systems that power the platform
• Work across the stack: backend APIs, data pipelines, orchestration layers, and frontend workflows
• Design and deploy agent-based LLM components for reasoning, extraction, and decision-making
• Collaborate directly with users to understand workflows and ship high-impact solutions
• Contribute to architecture discussions and help drive key technical decisions
• Write clean, reliable, maintainable code with strong engineering fundamentals
• Support roadmap execution and help elevate engineering standards as the team grows

Who You Are

• A senior-level engineer with experience in high-growth or startup environments
• Comfortable owning projects end-to-end with minimal oversight
• Strong in 0→1 product development and able to operate in ambiguous problem spaces
• Genuinely interested in applied AI and complex operational workflows
• Pragmatic, execution-focused, and thoughtful about long-term system design

What We’re Looking For

• 6+ years of professional software engineering experience
• Experience designing and shipping production backend systems and APIs
• Hands-on experience building or integrating LLM-powered or agent-based systems
• Ability to design scalable services and data pipelines
• Strong technical judgment and ability to make sound tradeoffs
• Clear communicator who can collaborate cross-functionally and with customers

Bonus Points

• Experience with retrieval pipelines, orchestration frameworks, or structured data extraction
• Background in logistics, operations, or other data-intensive domains
• Prior experience at an early-stage startup

Why You’ll Love This Role

• Meaningful equity and ownership at a high-growth startup
• Opportunity to help shape the core architecture of a category-defining AI platform
• Direct collaboration with founders on product and technical strategy
• High-trust environment with real autonomy
• The chance to modernize a critical global industry with automation and intelligent systems