Sr. Software Engineer (AI Agents)

Arcadia; San Francisco (CA); On-site; USD 180,000 - 280,000; Full time

Job summary

Arcadia is hiring a Senior Software Engineer (AI Agents) to build the core systems behind an intelligent automation platform. You’ll ship production-grade LLM systems, contribute across the stack, and shape product and technical architecture.

You will own critical components end-to-end in a high-growth startup environment, collaborating with the founding team to deliver impactful solutions at scale.

Qualifications

• 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 operate in ambiguous problem spaces.

Responsibilities

• Build and scale core automation and AI agent systems powering 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 with users to understand workflows and ship high-impact solutions.
• Contribute to architecture discussions and drive key technical decisions.
• Write clean, reliable, maintainable code with strong engineering fundamentals.
• Support roadmap execution and elevate engineering standards as the team grows.

Skills

Senior engineer

AI systems

APIs

Data pipelines

Tools

LLM integrations

Orchestration

Job description

We're hiring for 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