Founding Real-Time AI Backend Engineer

Kastle (YC S24); San Francisco (CA); On-site; USD 130,000 - 200,000; Full time

Benefits offered by this job

Competitive salary

Early-stage equity

High ownership and autonomy

Job summary

Kastle (YC S24), located in San Francisco, is looking for a talented engineer to architect and own core systems that power real-time AI voice and compliance workflows. You will leverage expertise in high-performance backend systems, especially in Python, to deliver innovations shaping consumer lending. With a competitive salary ranging from $130K to $200K and significant early-stage equity, this role offers a unique opportunity to be part of a dynamic, fast-paced environment alongside a world-class founding team.

Qualifications

• Strong fundamentals in building high-performance, real-time backend systems.
• Deep understanding of distributed systems, reliability, and fault tolerance.
• Excellent database design and performance optimization skills.

Responsibilities

• Architect and own core systems that power real-time AI voice and compliance workflows.
• Push performance boundaries, delivering sub-700 ms latency leveraging event-driven architecture.
• Deploy, operate, scale, and maintain resilient systems.

Skills

High-performance backend systems

Distributed systems

Database design

Python

Fault tolerance

Tools

Kubernetes

Job description

Kastle (YC S24), located in San Francisco, is looking for a talented engineer to architect and own core systems that power real-time AI voice and compliance workflows. You will leverage expertise in high-performance backend systems, especially in Python, to deliver innovations shaping consumer lending. With a competitive salary ranging from $130K to $200K and significant early-stage equity, this role offers a unique opportunity to be part of a dynamic, fast-paced environment alongside a world-class founding team.