Kargo creates powerful moments of connection between brands and consumers to build businesses. Every day, our dynamic teams work to radically raise the bar on what agentic AI, CTV, eCommerce, social, and mobile can do to deliver unique ad experiences across the world’s most premium platforms. Taking a Creative Science approach to all we do, we continuously innovate solutions that outperform industry benchmarks and client expectations. Kargo is growing rapidly and currently has offices in NYC, Chicago, LA, Dallas, Sydney, Auckland, London and Waterford, Ireland.

Who We Hire

Techies who want to build the future. Creatives who want to design it better. Communicators to win business. Collaborators to build it. Data pros who turn numbers into insights. Product builders who turn ideas into innovations. Anyone eager to be on a team that doesn’t stop to ask what’s next, because they’re already building it.

The Opportunity

The Kargo Platform organization builds what the rest of the business runs on: Workflow — the system of record holding the operational knowledge the company depends on, powering campaign creation, supply-side setup, and third-party integrations — alongside Self-Service Agentic Ad Buying and Creative Hub. As Principal Engineer you'll be the senior-most individual contributor across all three teams, setting multi-year technical direction, owning the architectural calls that are expensive to reverse, and deciding which things we shouldn't build at all. Your primary output is the capability of the engineers and systems around you.

The Daily To-Do

• Set and socialize the target architecture across Workflow, Self-Service Agentic Ad Buying, and Creative Hub, with a sequenced, incremental path from legacy systems to scalable distributed services
• Provide architectural direction, design review, and unblocking across multiple concurrent initiatives spanning all three teams — creating leverage without becoming the bottleneck
• Own the high-consequence, hard-to-reverse decisions on service boundaries, data ownership, orchestration technology, and build versus buy — and say no, early and clearly, to work that shouldn't happen
• Establish how Kargo builds LLM-backed and agentic features: evals, guardrails, cost and latency envelopes, and failure handling
• Up-level Senior and Staff engineers through design coaching, structured feedback, and pairing, and own the senior technical interview bar
• Identify the shared patterns, services, and infrastructure that should be common across the three domains rather than rebuilt in each
• Partner with engineering and product leadership to translate business strategy into technical strategy, and give an honest read on technical risk