Jobs in the United States

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Added 6 mins ago
Integrity Engineer
Marathon Petroleum Corporation
Cadiz, OH
This position will service as a Facilities Mechanical Integrity Engineer focused on Inspection Program Management for NG&NGL along with overseeing inspection services for their assigned…
Added 7 mins ago
Supervisor OT Network Security - Cyber Security & TSOC
FirstEnergy Corp
Akron, OH
…opportunities. This position is within FirstEnergy's Cyber Security Operations and reports to the Manager of Cyber Security Technologies. We're looking for a strategic, technically skilled…
Added 7 mins ago
Cyber Security Systems Administrator - Cyber Security & TSOC - Akron FirstEnergy Headquarters
FirstEnergy Corp
Akron, OH
…opportunities. This position is within FirstEnergy's Cyber Security Operations and reports to the Manager of TSOC Technologies. As a Cyber Security Engineer supporting the Transmission…
Added 7 mins ago
Lead Product Forward Deployed Engineer (pFDE) - Products & Platforms
Deloitte
Cincinnati, OH
…product-market fit. This role is focused on Fund & Investment Operations, an integrated, AI-enabled platform delivering oversight of fund and investment operation, transparency into service…
Added 7 mins ago
BF
Senior Full Sack & GenAI Developer
BC Forward
Cincinnati, OH
- $65 USD / hour
…experience in full stack development, GenAI and agentic AI, cloud infrastructure, and enterprise integrations, and a proven ability to deliver end-to-end enterprise-grade applications from…
Added 8 mins ago
Field Engineer - Electrical
Kiewit
Cleveland, OH
The Field Engineer provides technical and construction support for large-scale power, energy, and industrial projects. This role works closely with engineering, construction management,…
Added 8 mins ago
Malware Reverse Engineer
Accenture
Cleveland, OH · Cincinnati, OH · Columbus, OH
…analysis and operational intelligence capability. You will reverse engineer complex malware, unpacking sophisticated samples to uncover behavior, infrastructure, and adversary tradecraft.…
Added 8 mins ago
Data Resilience Engineer (P3)
American Chemical Society
Columbus, OH
…discoveries. Position Summary CAS is seeking a Data Resilience Engineer. Primary Responsibilities - Administer and optimize Commvault and related enterprise backup and recovery platforms,…
Added 17 mins ago
TT
Senior Software Engineer
True Talent Solutions Partners
San Francisco, CA
- $200,000 to $240,000 USD / year
…develop systems that bring workforce, financial, and field operations together, supporting the teams that deliver essential infrastructure and…
Added 29 mins ago
O
Data Center Controls Engineer (BMS / EPMS)
OpenAI
San Francisco, CA
- $325,000 to $490,000 USD / year
As a Data Center Controls Engineer, you will program, configure, integrate, and commission the controls systems that support high-density AI data centers. You will work hands-on with…
Added 41 mins ago
Software Engineer (Multiple openings) in Irving, TX.
U.S. Bank National Association
Irving, TX
…operational governance using Rancher and containerized cloud infrastructure. Will accept experience gained before, during or after Master’s program. Employer will accept experience gained…
Added 1 hour ago
Kafka Engineer
Social Security Administration
Woodlawn, MD
Summary IT Specialist (APPSW) Kafka Engineer positions are being filled through the Office of Personnel Management's delegated Direct Hire Authority, open to all U.S. citizens. Selections…
Added 1 hour ago
T
Network Engineer And Trainer
TEKsystems
Annapolis, MD
- $65 to $75 USD / hour
Network Engineer / Technical Training LeadPosition Summary
Added 1 hour ago
Software Development Engineer, Ads AI Core Infra (ACI)
Amazon.com Services LLC
Seattle, WA
…world class CI/CD pipelines to deploy our service automating infrastructure provisioning, high volume load testing and first-rate monitoring so our engineers can keep their heads down…
Added 1 hour ago
BIM Systems Engineer, Design Services (DS)
Amazon Data Services, Inc.
Austin, TX · Herndon, VA
…engineers and designers dedicated to revolutionizing data center infrastructure. We pride ourselves on our expertise in designing, building, and optimizing innovative data center solutions.…
Added 1 hour ago
Sales Compensation Analyst (Commercial Modeling & Governance Automation)
S&P Global
Hightstown, NJ · New York, NY · Virtual, CO · Virtual, CT · Virtual, DC · Virtual, IL · Virtual, NC · Virtual, NJ · Virtual, NY · Virtual, TX · Virtual, VA
…controls into automated, audit-ready data models - building the infrastructure that makes accuracy scalable and compliance systematic. If you combine deep technical fluency in SQL, Python,…
Added 1 hour ago
AWS Cloud Systems Engineer
Systems Engineering Solutions Corporation
Hanscom Air Force Base, MA
This role supports the U.S. Air Force Cloud One Architecture and Common Shared Services contract and currently has an opening for an AWS Cloud Systems Engineer.
Added 1 hour ago
AWS Cloud Systems Engineer
Systems Engineering Solutions Corporation
Boston, MA
This role supports the U.S. Air Force Cloud One Architecture and Common Shared Services contract and currently has an opening for an AWS Cloud Systems Engineer.
Added 1 hour ago
O
Junior DevSecOps Engineer (Python, CI/CD)
OpenDataJobs
Washington, DC
- $80,000 to $95,000 USD / year
…and continuous delivery (CI/CD) pipelines, and secure cloud infrastructure that keep federal systems running. But we hire people, not seats. As the work evolves, you will move to where the…
Added 1 hour ago
Research Engineer - Formal Methods
Galois, Inc.
Boston, MA
We are a community of researchers, engineers, and operations people dedicated to creating trustworthiness in critical systems in every functional area of the organization. Our unique…
Added 1 hour ago
Senior Software Engineer
Greywright Inc
Boston, MA
Greywright is hiring a Senior Software Engineer to lead the build-out and improvement of ground control systems and the software running on our autonomous vehicles. You will own the…
Added 1 hour ago
TT
Fullstack Software Engineer
True Talent Solutions Partners
San Francisco, CA
- $160,000 to $200,000 USD / year
- Develop revenue and payments infrastructure for service authorization, billing, adjudication, and provider payments.
Added 2 hours ago
Consulting BI Architect
HCA Healthcare
Nashville, TN
Partner with data analysts and engineering teams to resolve architectural or performance issues identified during validation, UAT, and production operations.
Added 2 hours ago
Senior Network Engineer
Brunel
CA
Brunel has partnered with SB Energy to hire an Senior Network Engineer to support the development and execution of large-scale power generation and data center infrastructure projects…
Added 2 hours ago
TT
Senior Platform Engineer
True Talent Solutions Partners
New York, NY
- $175,000 to $220,000 USD / year
Join a platform engineering team at a public safety technology company, building and operating the cloud infrastructure and data systems behind large-scale information retrieval. You will…

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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