Sr. Software Engineer, Agents (AI)

Location: Onsite in Sawtelle, Los Angeles, United States; this is an in-person role with no relocation assistance.

Annual salary: $175,000–$200,000

Company

hirify.global is a marketplace for used electric vehicles, providing instant cash offers backed by battery-health data and real-time dealer bidding. Founded by former Tesla executives in 2023, the company has facilitated over $150M in EV sales and raised a $20M Series A led by Lightspeed Venture Partners.

What you will do

• Build and ship AI agents and multi-agent workflows for operations, dealers, and sellers, including document extraction, inspection and title review, communication, and internal tooling.
• Use LangChain and LangGraph to build agents, with LangSmith or Langfuse for tracing, debugging, and evaluation.
• Create evaluation datasets from real cases, measure accuracy and failure modes, and identify regressions.
• Integrate agents with existing marketplace, pricing, and supporting services through clean APIs and tools.
• Monitor production cost, latency, error rates, and human-review rates; improve prompts, tools, and guardrails.
• Build TypeScript and React review interfaces and backend endpoints when required, and help engineering adopt reusable agent patterns.

Requirements

• 5+ years of full-time industry software engineering experience, including shipping and supporting production features after launch.
• Strong TypeScript or Python skills and the ability to work across APIs, databases, and frontend systems when needed.
• Hands-on experience building production LLM features involving tool use, retrieval, structured output, and evaluation.
• Experience with an agent framework and observability stack, ideally LangChain, LangGraph, LangSmith, or Langfuse; equivalent experience must demonstrate what was built and how it was validated.
• Experience building agent-first tooling such as skills, MCP servers, custom workflows, or evals.
• Ability to work within systems designed by others, communicate design concerns, and ship agreed solutions.
• Strong documentation habits, including design notes, evaluation results, and runbooks.
• Comfort working in a small team through pairing, code review, and knowledge sharing.
• High agency in an ambiguous, fast-moving startup, with a focus on identifying valuable workflows and automating them.
• BS in computer science or a related field, or equivalent experience.

Nice to have

• Experience with document-heavy workflows such as titles, registrations, inspections, lending, or insurance.
• Experience with vehicle, marketplace, or auction products.
• Experience with human-in-the-loop review tools, fine-tuning, or prompt optimization for production LLM features.

Culture & Benefits

• Full-time, salary, exempt position reporting to the Head of Engineering.
• Health, vision, and dental insurance, plus a 401(k) plan and equity.
• Unlimited PTO and ongoing growth and development opportunities.
• Daily lunch and dinner stipend, fully stocked kitchen, dog-friendly office, and onsite EV charging.
• A 30-day remote work from anywhere policy is available, while the position itself remains in-person.
• Visa sponsorship is not offered.