Principal Engineer - Agentic AI Applications

About this role

Serko is a cutting-edge tech platform in global business travel & expense technology. When you join Serko, you become part of a team of passionate travellers and technologists bringing people together, using the world’s leading business travel marketplace. We are proud to be an equal opportunity employer, and we embrace the richness of diversity, showing up authentically to create a positive impact. There's an exciting road ahead of us, where travel needs real, impactful change.

With offices in New Zealand, Australia, North America, and China, we are thrilled to be expanding our global footprint, landing our new hub in Bengaluru, India. With a rapid growth plan in place, we’re hiring people from different backgrounds, experiences, abilities, and perspectives to help us build a world-class team and product.

You will define how autonomous AI agents are designed, orchestrated, and deployed at scale, moving beyond simple wrappers to create robust, deterministic systems out of non-deterministic models. You will partner closely with Product, Research, and Platform teams to turn cutting-edge LLM capabilities into reliable, high-availability products.

This role can be based in West Coast USA - we would be open to candidates in other locations as well with proven experience and expertise.

### Requirements

We aren't just building prototypes; we are building the autonomous backbone of the modern enterprise. As a Principal Engineer, you will lead the technical vision and architecture for our next-generation agentic AI applications.

What You’ll Do

• **Architect the Agentic Runtime:** Own the end-to-end technical architecture for agentic systems, including multi-agent orchestration, memory management, and reasoning pipelines.
• **Engineering for Reliability:** Implement robust infrastructure to handle non-deterministic loops, including automated circuit-breakers, latency-aware orchestration (targeting P99 SLAs), and granular token/cost-observability.
• ...