Serko Ltd.
Serko Ltd.
201 – 500 Employees
ConsultingLogisticsTravel
Serko Ltd. is a New Zealand-based travel and expense management technology company helping organizations manage corporate travel and expense administration through online tools. Its travel-focused products include Zeno, an AI-enabled platform designed to support personalized travel planning and simplify booking. Serko operates with teams in Australia, the United States, China, and India, serving hundreds of thousands of organizations in more than 180 countries with a global workforce of over 360 people.

Principal Engineer, Agentic AI Applications – Serko (US Remote)

Set the architecture for scalable agentic AI across Serko’s global business travel and expense platform. Build dependable LLM systems, runtimes, and observability infrastructure.

Description

  • Shape how autonomous AI agents are designed, coordinated, and deployed at scale.
  • Set the technical direction and architecture for new agentic AI applications.
  • Own agentic system architecture, from multi-agent coordination and memory to reasoning pipelines.
  • Build infrastructure for non-deterministic loops, circuit breakers, latency-aware orchestration, and token and cost monitoring.
  • Establish engineering patterns, design standards, and development practices for agentic applications.
  • Coach and develop senior engineers.
  • Review architectures and guide consequential technical decisions.
  • Contribute to hiring.
  • Work with AI Operations to build, serve, and monitor agentic workloads.
  • Partner with Product, Research, and Platform teams to deliver reliable, highly available products.

Requirements

  • 12 or more years of software engineering experience.
  • At least 4 years in technical leadership or principal-level positions.
  • Hands-on experience delivering LLM-powered or agentic systems to production.
  • Experience with LangGraph, AutoGen, CrewAI, or custom runtimes.
  • A track record designing distributed, highly available systems.
  • Expertise in Python and modern backend frameworks.
  • Strong knowledge of retrieval-augmented generation (RAG), vector databases, tool-calling APIs, and multi-step reasoning.
  • Ability to turn complex AI concepts into clear technical roadmaps.
  • Interest in shaping engineering culture across the organization.
  • TypeScript and Node.js experience is a plus.

Benefits

  • Competitive base salary.
  • Medical benefits.
  • Discretionary incentive plan tied to individual and company performance.
  • Access to a learning and development platform.
  • Opportunities to shape your career path.
  • Flexible work policy.

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