Startups · AI

Technical Lead, SWE

Kastle · San Francisco · On-site

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About Kastle

One platform that keeps originations, fulfillment, and servicing moving 24/7, built for regulated work and connected to the systems you already use. Backed by Y Combinator.

About the role

As Technical Lead, you'll own the technical direction of the systems behind Kastle's real-time AI voice and compliance agents, and lead the engineers who build them. You'll stay hands-on in the code while setting architecture, raising the engineering bar, and turning ambitious product goals into reliable systems running inside bank environments. Found on 1752vc Careers, the job board for startup and VC roles.

What they're looking for

  • 7+ years building high-performance, real-time backend systems (we work primarily in Python)
  • 2+ years leading engineers as a tech lead, staff engineer, or engineering manager, with a track record of shipping large systems through a team
  • Deep understanding of distributed systems, reliability, and fault tolerance
  • Excellent database design and performance optimization skills
  • Hands-on experience running production workloads on Kubernetes and cloud infrastructure
  • Clear written and verbal communication, you can explain trade-offs to engineers, executives, and bank stakeholders alike
More about this role

Kastle is building the AI employee for banks. We work with some of America's financial institutions, helping them scale their contact center and compliance operations with autonomous AI agents that process payments, originate loans, and guide customers through the biggest financial decisions of their lives.

We've processed over $2 billion in transactions, just raised a $24M Series A, and are backed by Insight Partners and Y Combinator. If you want to build AI that works in the real world, where precision, reliability, and performance matter, and help redefine access to credit, read on.

As Technical Lead, you'll own the technical direction of the systems behind Kastle's real-time AI voice and compliance agents, and lead the engineers who build them. You'll stay hands-on in the code while setting architecture, raising the engineering bar, and turning ambitious product goals into reliable systems running inside bank environments.

This is a player-coach role: roughly half your time writing and reviewing code, half designing systems, mentoring, and partnering with product, forward-deployed engineering, and customers.

Set technical direction. Own the architecture of the core platform...

Read the full posting on Kastle's site ↗

Engineering

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