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Added 10 mins ago
Building System Engineer (2027 New College Graduate)
Global Foundries
Essex Junction, VT
GlobalFoundries in Essex, Vermont is seeking a Building System Engineer to support facilities operations and engineering services for building mechanical systems and equipment. This New…
Added 17 mins ago
Senior QA Engineer
FacilityOS
Annapolis, MD
FacilityOS is a fast-growing company redefining how facilities operate - bringing safety, security, and daily operations into one unified platform used by organizations around the world.
Added 33 mins ago
OT
Sales Engineer - System Design & Estimating
Onpoint Tech Systems
Delray Beach, FL
- $80,000 to $100,000 USD / year
We're looking for an experienced Sales Engineer who can turn a client conversation, a set of plans, and a budget into a complete, accurate, profitable system design and proposal. You will…
Added 36 mins ago
TT
Founding Engineer
True Talent Solutions Partners
New York, NY
- $210,000 to $260,000 USD / year
Join an early-stage healthtech team as its backend-leaning Founding Engineer. You will build and operate the core platform for real-time prescription pricing, claims processing, and…
Added 44 mins ago
DT
AI (ML) Engineer - Colorado Springs, CO
Davidson Technologies, Inc.
Colorado Springs, CO
- $119,000 to $142,000 USD / year
Davidson is seeking an AI (ML) Engineer in Colorado Springs, CO.
Added 44 mins ago
DT
Model Based Systems Engineer (Radar Focus) - Woburn, MA
Davidson Technologies, Inc.
Woburn, MA
- $110,000 to $170,000 USD / year
Davidson is seeking a Model Based Systems Engineer (Radar Focus) in Woburn, Massachusetts.
Added 44 mins ago
(MBSE) Software Systems Engineer - Roy, UT
Davidson Technologies, Inc.
Roy, UT
Davidson Technologies Inc. is seeking a (MBSE) Software Systems Engineer onsite in Roy, UT.
Added 49 mins ago
Electrical Engineer (Hybrid)
BAE Systems
Cedar Rapids, IA
BAE Systems is looking for an entry level Electrical Engineer with a passion for engineering and the desire to be part of an innovative, dedicated team responsible for designing,…
Added 58 mins ago
Senior Associate, Software Engineer
L3Harris
Richardson, TX
…air, land, sea and cyber domains in the interest of national…
Added 59 mins ago
A
Principal Storage Engineer
AT&T
Plano, TX
- $155,400 to $261,100 USD / year
We are seeking a highly skilled and experienced Principal Storage Engineer to serve as a technical leader responsible for the design, engineering, automation, reliability, and lifecycle…
Added 59 mins ago
A
Principal Storage Engineer
AT&T
Dallas, TX
- $155,400 to $261,100 USD / year
We are seeking a highly skilled and experienced Principal Storage Engineer to serve as a technical leader responsible for the design, engineering, automation, reliability, and lifecycle…
Added 59 mins ago
C
Software Engineer Compiler II (Full Time) – United States
Cisco
Austin, TX
- Full-time
As a Compiler Software Engineer II, you will architect, implement, and optimize advanced compilation, code analysis, and debugging toolchains that power Cisco's core networking platforms.…
Added 59 mins ago
RF Support Engineer
Emerson
Austin, TX
…TSEs advocate for our customers by recommending Platform and System improvements to R&D, providing customer insight to sales, and making sure NI is ready to support new Products and…
Added 1 hour ago
Senior Software System Engineer
NVIDIA Corporation
North District, IL
Our Networking System Product Engineering team is looking for an excellent Test Design and Validation Engineer. The position requires an understanding of HW and SW to provide stable,…
Added 1 hour ago
Senior AI Security Researcher
NVIDIA Corporation
South District, IL · North District, IL
…and profoundly impacting society. NVIDIA Networking product security team is looking for an outstanding technical AI red teamer with hands-on safety and security experience to help us…
Added 1 hour ago
Senior System Security Architect
NVIDIA Corporation
South District, IL · North District, IL
NVIDIA's Networking AI Platforms Security group is redefining how security operates at scale by embedding AI at the core of its detection, defense, and engineering workflows. We are seeking…
Added 1 hour ago
Senior ASIC Hardware Design Engineer
NVIDIA Corporation
South District, IL
NVIDIA is building a new group in Israel, this group delivers security engines and risc-V processor IPs to all of NVIDIA product lines working with all NVIDIA groups around the world. We…
Added 1 hour ago
Technical Lead, SWE
Kastle
San Francisco, CA
- Build a self-improving AI system. Design the feedback loops that let our agents get better with every customer interaction and human review.
Added 1 hour ago
Software Architect
NVIDIA Corporation
North District, IL
…networking, and accelerated infrastructure work together as one system. We are looking for an outstanding engineer to join our software architecture group and help shape the next generation…
Added 1 hour ago
Senior Site Reliability Engineer
NVIDIA Corporation
North District, IL
Collect and analyze system and capacity data; develop enterprise-wide capacity plans and coordinate with management to implement appropriate changes.
Added 1 hour ago
Senior Product Security Compliance Architect
NVIDIA Corporation
North District, IL
…networking. We are seeking a proactive, highly technical Product Security Compliance Architect to join the NVIDIA Networking product security team. In this role, you will bridge the gap…
Added 1 hour ago
Senior Software Engineer, BlueField platform
NVIDIA Corporation
North District, IL
We are looking for a Senior Software Engineer to provide broad technical leadership for BlueField ARM processor platform boot, from early firmware through Linux login. Do you enjoy looking…
Added 1 hour ago
Senior System Software Engineer - Signing Platform
NVIDIA Corporation
North District, IL
Hands-on experience with code signing, HSMs, secure boot or software supply chain security.
Added 1 hour ago
Senior Hardware Network Engineer
NVIDIA Corporation
North District, IL
The Networking Application Engineering team at NVIDIA is looking for a motivated, experienced Senior Hardware Engineer who thrives at the intersection of hardware performance, ecosystem…
Added 1 hour ago
Software and System Architect
NVIDIA Corporation
North District, IL
NVIDIA is looking for a passionate and talented SW & System Architect to join our SW Architecture group. The position includes researching new technologies with focus on architecture…

Kastle

Technical Lead, SWE

San Francisco, CA, United States

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Job details

Posting language: English
Posted: Nov 1, 2026

Original job description

ABOUT KASTLE

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.

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.

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.

WHAT YOU'LL DO

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.

WHAT YOU BRING

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.
A bias for ownership and the ability to figure things out in messy, high-velocity environments.

NICE TO HAVE

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
1-day onsite with the team

WHY JOIN KASTLE

Work with a world-class team building a generational AI company that will redefine how every loan in America is made and managed.
Move fast with real impact: add a feature in a few days and ship it to top 10 lenders the next week, reaching millions of customers.
Shape the engineering org: high ownership and direct input on architecture, team culture, and how engineering scales.
Competitive compensation plus meaningful equity at a high-growth company.

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