Kastle Technical Lead at Kastle responsible for the technical direction of real-time AI voice and compliance systems. Leads engineers, sets architecture, and ensures reliable, high-performance systems in bank environments.
Responsibilities
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 powering real-time AI voice and compliance workflows, and make the key build-vs-buy and design calls.
Lead and grow the team. Mentor engineers (this is a player coach role), run design and code reviews, and help hire the next wave of engineers as we scale after our Series A.
Push performance boundaries. Hold the line on sub-700ms voice latency using event-driven architecture and parallel processing.
Run reliable systems at scale. Deploy, operate, and scale resilient services on Kubernetes and distributed subsystems, with the observability and on-call practices banks expect.
Build a self-improving AI system. Design the feedback loops that let our agents get better with every customer interaction and human review.
Ship fast, ship right. Take projects from whiteboard to live production in bank environments, balancing velocity with security and compliance.
Partner across the company. Work with product, forward-deployed engineers, and customers to turn real lender workflows into technical roadmaps.
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.
Qualification
7+ years building high-performanceExperience trainingExperience in fintechPrevious startup or founder experienceThe interview processWe respect your time
Required
7+ years building high-performance, real-time backend systems
2+ years leading engineers as a tech lead, staff engineer, or engineering manager
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 skills
Bias for ownership and ability to work in high-velocity environments
Preferred
Experience training, designing, or building production AI/ML systems, especially LLM agents or real-time voice (speech-to-text, text-to-speech, telephony).
Experience in fintech, banking, or other regulated industries (SOC 2, PCI, data privacy).
Previous startup or founder experience, ideally scaling a team from early stage through Series A/B.
The interview process
We respect your time. Our process is short and designed to show how you think and lead:
15-min call with our Talent Lead to learn more about the role
1-hour live coding session with a Founding Engineer
1-hour system design and technical leadership conversation with the CTO
