Jobs in the United States

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Added 2 mins ago
Senior Engineer TR, Gas Chemical System (GCS)
Samsung Austin Semiconductor, LLC.
1530 FM 973 Taylor, TX
As an Senior Engineer TR, Gas Chemical System (GCS), see roles and responsibilities below.
Added 2 mins ago
Etch Engineer - Process Owner
Samsung Austin Semiconductor, LLC.
1530 FM 973 Taylor, TX
As an Etch Engineer - Process Owner, see roles and responsibilities below.
Added 2 mins ago
Engineer, Analysis Engineering
Samsung Austin Semiconductor, LLC.
Austin, TX
As an Engineer, Analysis Engineering, see roles and responsibilities below.
Added 7 mins ago
DO
Principal Engineer, Water Resources
Department of Water Resources
CA
- $15,263 to $17,336 USD / month
Added 7 mins ago
DO
Engineer, Water Resources
Department of Water Resources
CA
- $6,488 to $12,152 USD / month
Under the direction of the Senior Engineer, Water Resources, incumbent is responsible for performing engineering analyses related to SWP project facilities and the distribution of costs…
Added 34 mins ago
O
Lead Principal Application Software Engineer- Forward Deployed Engineer
Oracle
Pierre, SD
- $104,600 to $264,100 USD / year
Oracle Customer Success Services (CSS) is seeking a Senior Principal Forward Deployed Engineer to lead the delivery of strategic AI and data transformation programs for Oracle's largest…
Added 34 mins ago
Software Test Engineer
WCG Clinical
Pierre, SD
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 39 mins ago
DevOps + Go (Platform Engineer )
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 DevOps + Go (Platform Engineer) based in the United States.
Added 45 mins ago
Engineer-1 - System Control Center
Great Lakes Water Authority
6425 Huber St Detroit, MI
The Engineer performs engineering work for municipal projects. This position administers and manages the design and implementation, and/or delivery and execution of consultant and contract…
Added 45 mins ago
Software Engineer II, Early Career
Google
Mountain View, CA · Kirkland, WA · Los Angeles, CA · Madison, WI · New York, NY · Palo Alto, CA · Pittsburgh, PA · Raleigh, NC · Durham, NC · San Bruno, CA · Seattle, WA · Sunnyvale, CA
During the application process, you will be able to indicate any additional preferred working locations. We encourage all qualified individuals to apply, and we will consider your skills…
Added 1 hour ago
T
Construction Services Inspector / Field Engineer
TKDA
Bloomington, MN
- $67,500 to $84,999 USD / year
…joining our Bloomington team as a Construction Inspector /…
Added 1 hour ago
Desktop Support Engineers
University of Utah
Salt Lake City, UT
Desktop Support Engineer, I: Requires a bachelor’s (or equivalency) + 2 years of directly related work experience or a master’s (or equivalency) degree.
Added 1 hour ago
SW Engineer Intern, AI Engineering
Roku
San Jose, CA
Added 1 hour ago
SO
SENIOR PROJECT SQUAD LEADER (CIVIL ENGINEER IV)
State of Illinois
Effingham, IL
- $6,281 to $9,792 USD / month
Current registration as a Licensed Professional Engineer in the state of Illinois OR current registration as a Licensed Structural Engineer in the state of Illinois.
Added 1 hour ago
ASSISTANT GEOMETRICS ENGINEER (CIVIL ENGINEER IV)
State of Illinois
Effingham, IL
…prepares intersection designs for approval by the Geometrics…
Added 1 hour ago
ASSISTANT BRIDGE AND HYDRAULICS ENGINEER (CIVIL ENGINEER IV)
State of Illinois
Effingham, IL
This position assists the Bridge and Hydraulics Engineer in the design and preparation of plans and reports for bridges and other major drainage structures, and in the review and…
Added 2 hours ago
Enterprise Applications Engineer
United Imaging North America
United States
…solutions, and intelligent solutions that cover the entire process of imaging diagnosis and treatment. From our North American HQ in Houston, we are passionate about expanding our customer…
Added 2 hours ago
P
Machine Learning Engineer - Lendscore
Plaid
New York, NY
- $211,680 to $272,160 USD / year
As a Machine Learning Engineer on the Credit team, you’ll design, build, and deploy scalable machine learning solutions that support LendScore and the future of cash-flow-based…
Added 2 hours ago
J
Senior Software Engineer - Front End (Library of Congress)
Jobgether
Remote, United States
- $100,000 to $135,000 USD / year
…and next steps. Our partner is looking for a Senior Software Engineer - Front End (Library of Congress) based in the United…
Added 2 hours ago
Senior Software Engineer II
Invoca
Remote, United States
Troubleshoot independently across the team's services, contribute to post-incident reviews, and recommend process and monitoring fixes alongside code fixes.
Added 3 hours ago
THIS POSTING IS INTENDED FOR THOSE REGISTERED TO ATTEND THE SOCIETY OF HISPANIC PROFESSIONAL ENGINEERS CONFERENCE, Oct 28 - 31st in Indianapolis, IN
Medtronic
Boston, MA
For Engineer I opportunities, we are looking for a minimum of a Bachelor's Degree, completed by May 2026, with 0+ years of experience.
Added 3 hours ago
Launch Operations Engineer (All levels)
Blue Origin Personnel, LLC
Space Coast, FL
Experience Levels with manufacturing, industrial, or process engineering. (3+ Level II Engineer, 5+ Level III Engineer, 8+ SR Level Engineer)
Added 3 hours ago
Improvement Engineer
Olin Corporation
US-TX-Freeport
The Improvement Engineer leads the plant-level improvement process by gathering and analyzing data, evaluating improvement opportunities, and implementing improvement projects. This role…
Added 4 hours ago
AE
Campus Graduate Masters Summer Internship Program - 2027 AI Engineer, Enterprise Technology Services- Phoenix, AZ
American Express
Phoenix, AZ
- $24.05 to $63 USD / hour
At American Express, we empower future technologists to learn, innovate, and make an impact from day one. As an AI Engineer Intern in Enterprise Technology Services, you’ll join a 10-week…
Added 4 hours ago
AE
Campus Graduate Masters Summer Internship Program - 2027 Software Engineer, Enterprise Technology Services- Phoenix, AZ
American Express
Phoenix, AZ
- $24.05 to $63 USD / hour
At American Express, we empower future technologists to learn, innovate, and make an impact from day one. As a Software Engineer Intern, you’ll join a 10-week Summer Internship Program and…

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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