Jobs in the United States

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Added 12 mins ago
Infrastructure Engineer II
AF Group
Kalamazoo, MI
SUMMARY:nnThe Infrastructure Engineer II role is responsible for the operations of secure and highly available computing platforms, servers, and networks. This role is responsible for…
Added 12 mins ago
Manufacturing Engineer - Press & Automation
General Motors
Warren, MI
As a Press and Automation Manufacturing Engineer, you will help design, implement, and optimize the press and automation systems that support our stamping operations. In this role, you will…
Added 12 mins ago
Battery Lab Test Systems Engineer
General Motors
Warren, MI
…Pontiac, Warren, and Milford, Michigan. The Test Site Systems Engineer will directly support the Global Battery Systems Lab (GBSL), the Wallace Battery Cell Innovation Center (WBCIC), and…
Added 12 mins ago
Software Test Engineer
WCG Clinical
Lansing, MI
The Software Test Engineer is a member of the Quality Engineering team, responsible for supporting the testing, validation and delivery of WCG namedproducts and systems.The role applies…
Added 21 mins ago
Sr. Software Engineer, Falcon NG-SIEM, FrontTier Expansions (Hybrid)
CrowdStrike, Inc.
Austin, TX
CrowdStrike is seeking a Senior Software Engineer to help design and build the software systems that power our global LogScale/NG-SIEM infrastructure footprint. The FrontTier Expansions…
Added 21 mins ago
Sr. Engineer - Cloud (Remote)
CrowdStrike, Inc.
Remote, United States
You have a passion for reliability and quality
Added 21 mins ago
Engineer III - Cloud (Remote)
CrowdStrike, Inc.
Remote, United States
You have a passion for reliability and quality
Added 21 mins ago
Sr. Platform Engineer - Kubernetes (Remote)
CrowdStrike, Inc.
Remote, United States
CrowdStrike is hiring for a Sr. Platform Engineer to help with continued global expansion of the Falcon platform. We are looking for a highly technical, hands-on Engineer with experience…
Added 21 mins ago
Cloud Engineer III, Exposure Management (Hybrid, Sunnyvale)
CrowdStrike, Inc.
Sunnyvale, CA
…role requires a strong focus on distributed systems, service reliability, scalability, and cloud architecture across AWS and…
Added 22 mins ago
Principal Engineer, Data Platform
Jobgether
Remote, United States
As Principal Engineer, Data Platform, you will shape the technical direction and build the capabilities behind a large-scale, cloud-native data ecosystem supporting a distributed…
Added 40 mins ago
Senior Engineer
Tenneco
Parwanoo, IN
Quality & Compliance: Ensure adherence to IATF standards, PFMEA, and control plans for process reliability.
Added 41 mins ago
Data/Visualization Engineer SME
Leidos
Albuquerque, NM
Leidos is seeking a highly skilled Data Visualization Engineer SME specializing in data visualization to join our team in Fort Belvoir, VA or Albuquerque, New Mexico. The primary focus of…
Added 54 mins ago
Principal Engineer, Agentic AI
Jobgether
Remote, United States
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Principal Engineer, Agentic AI based in the United States .
Added 1 hour ago
Architectural Engineer
Vertiv
Pelzer, SC
Serve as Architectural Engineer (AE) to provide conceptual and detailed design of building architecture in post sales stage.
Added 1 hour ago
Silicon Validation Product Engineer, Google Cloud
Google
Sunnyvale, CA
Experience collaborating with silicon vendors, contract manufacturers, and supply chain partners to improve test quality, reliability, and yield.
Added 1 hour ago
Software Engineer - AI Tooling Infrastructure
Jobgether
Remote, United States
We are looking for an experienced Software Engineer to build, operate, and scale the backend infrastructure powering innovative AI-driven developer tools. In this role, you will take…
Added 1 hour ago
J
Senior/Staff DevOps Engineer, Federal
Jobgether
Remote, United States
- $180,000 to $240,000 USD / year
We are seeking an experienced Senior/Staff DevOps Engineer to build, deploy, and maintain secure, reliable infrastructure supporting federal, government, and national security technology…
Added 1 hour ago
Senior Mission Operations Engineer
Blue Origin Personnel, LLC
Reston, VA · Denver, CO
As a Senior Mission Operations Engineer, you will serve as the Mission Operations Lead for a deep space mission that will cruise to Mars, insert into orbit, and then serve for years as a…
Added 1 hour ago
Lead Platform Engineer
The Guardian Life Insurance Company of America
NY
We are looking for a Lead Platform Engineer to improve the engineering experience across Guardian by identifying opportunities, partnering with engineering teams, and delivering reusable…
Added 1 hour ago
Senior RF/Microwave Design Engineer
Keysight Technologies, Inc.
Santa Rosa, CA
As an RF/Microwave Design Engineer, you will be part of Keysight Labs' mm-Wave Subsystems Design Group. Our team develops industry-leading mm-wave front-end products addressing a wide range…
Added 1 hour ago
Senior Electrical Engineer
Devens
Devens, MA
The Senior Electrical Engineer, Site Infrastructure serves as a technical owner and subject-matter expert for the site's critical electrical infrastructure. This individual will own and…
Added 1 hour ago
Sr Software Engineer (Product Engineering Background)
Jobgether
Remote, United States
…and next steps. Our partner is looking for a Senior Software Engineer (Product Engineering Background) based in United…
Added 1 hour ago
Sr Consultant, Software Engineering - Forward Deployed Engineering
Nationwide Life and Annuity Insurance Co
OH · AZ · IA
…has operational accountability for the production readiness, reliability, supportability, lifecycle health, and measurable outcomes of the AI solutions within its…
Added 1 hour ago
Consultant, Software Engineer - Platform Engineering
Nationwide Life and Annuity Insurance Co
OH · AZ · IA
Engineering and operational excellence practices focused on reliability, observability, security, and cost controls, including monitoring, logging, distributed tracing, incident management,…
Added 1 hour ago
Consultant, Software Engineer - Forward Deployed Engineering
Nationwide Life and Annuity Insurance Co
OH · AZ · IA
As a Software Engineer, you’ll focus on mentoring and guiding others to deliver high-quality, cost-effective technology solutions to business partners by crafting new software applications…

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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