Cartesia

Cartesia delivers real-time multimodal intelligence and ultra-realistic, low-latency voice AI for developers and teams building interactive applications. The platform uses State Space Models to power…

AI VoiceLow-latencyPlatformReal-timeSSMText-to-SpeechVoice AIVoice Cloningcartesia.ai

Cartesia

AI VoiceLow-latencyPlatformReal-timeSSMText-to-SpeechVoice AIVoice Cloningcartesia.ai

HQSan Francisco, US

Team Size114

Open Jobs9

Total Funding$191M

Latest Fundraise8 months ago

TL;DR

Headquarters: San Francisco

Product focus: Real-time, low-latency multimodal AI (notably TTS/voice) and developer APIs (Sonic)

Founding background: Founded by Stanford AI Lab PhD researchers

Employee count: 103

Known investors: Kleiner Perkins; Greycroft

Company Overview

Problem Domain

Low-latency, real-time multimodal AI (speech TTS, speech-to-text, long-context efficiency) for developers and enterprises.

Founded

2023

Industry

Artificial Intelligence

Tech Stack

State space models (SSMs)

Real-time TTS/voice AI

Streaming developer APIs

Funding Track Record

Series A- December 2024

$22M

Tech reporting states this round brought total raised to $27M as of the report.

$100M

Dealroom entry reports a $100M raise related to Sonic-3/SSM development.

Investor Signal

“Kleiner Perkins; Greycroft”

Founders

What we do

Join the Team

Technical Account Manager

On-SiteSan Francisco, CA, US

On-Site • San Francisco, CA, US

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About Cartesia Our mission is to architect AI that learns from and interacts with the world like humans do.

We're pioneering the model architectures that will make this possible. Our founding team met as PhDs at the Stanford AI Lab, where we invented State Space Models or SSMs, a new primitive for training efficient, large-scale foundation models. Our team combines deep expertise in model innovation and systems engineering paired with a design-minded product engineering team to build and ship cutting edge models and experiences.

We're funded by leading investors at Index Ventures and Lightspeed Venture Partners, along with Factory, Conviction, A Star, General Catalyst, SV Angel, Databricks and others. We're fortunate to have the support of many amazing advisors, and 90+ angels across many industries, including the world's foremost experts in AI.

About The Role We're looking to hire a Technical Account Manager to own the enterprise customer technical relationship from signed contract through production and beyond. As a key member of our early GTM team, you'll drive customers to go-live, keep them healthy, and grow their usage over time— scoping problems, removing blockers, bringing the right people, and driving to conclusion.

Your Impact

Own the full post-sale technical relationship for a book of enterprise accounts, from pre-go-live scoping through post-launch stabilization and expansion.

What You Bring

6+ years of experience in technical account management, customer success, solutions engineering, or a related customer-facing technical role at a high-growth B2B company
Genuinely technical: can read API docs, understand system architecture, triage integration issues, and hold a real conversation with an engineer

Nice-To-Haves

Experience in voice AI, real-time audio/video, or telephony infrastructure
Background where technical account management was a revenue-driving function, not a support function
Infrastructure, developer tools, or API-first product experience
Experience scaling from Series A/B through growth stage and adapting the customer motion as the business evolves.

More Details 🏢 In-office policy: We’re an in-person team based out of offices in 🇺🇸 San Francisco, 🇬🇧 London and 🇮🇳 Bangalore. We love being in the office, hanging out together, and learning from each other every day.

🌎 Visa sponsorship: We provide visa sponsorship support and assess each circumstance on a case-by-case basis. However, visa sponsorship is dependent on many factors, including the role you are applying for, and the location you are going to be based, and so we can't always guarantee success. Your Recruiter will work with you to understand your visa sponsorship needs from the first call.

🚢 We ship fast. All of our work is novel and cutting edge, and execution speed is paramount. We have a high bar, and we don’t sacrifice quality or design along the way.

🤝 We support each other. We have an open & inclusive culture that’s focused on giving everyone the resources they need to succeed.

Our Benefits (US Employees Only) 💰 Compensation. Competitive base salary alongside attractive equity package.

🩺 Health Insurance. Fully covered medical insurance along with dental and vision for you and your family.

🏦 401(k) 🚆 Commuter Allowance . A monthly stipend to help you get to and from the office.

🏖️ Flexible PTO . Take as much time as you need to recharge your batteries.

🍲 Meals & Snacks . Lunch, dinner and plenty of snacks, provided daily.

🦖 Your own personal Yoshi.

Startup jobs. A lot of them.

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Drive customers to go-live with urgency and precision: define success criteria with senior technical stakeholders, design implementation strategy per customer, run daily standups and 30/60/90 onboarding reviews, and project manage the rollout end-to-end.

Independently triage customer technical issues — distinguishing product bugs, integration failures, and customer-side misconfigurations — and route to the right internal owner on the first try.

Lead FDEs through implementation: set direction, manage scope, and serve as the primary technical counterpart for the customer, not a project manager with a spreadsheet.

Translate customer needs into crisp internal documentation like clear bug reports, feature requests with full context, and scope change docs, not vague Slack threads.

Monitor account health proactively, identify at-risk customers before problems escalate, and drive consumption and usage growth across the book.

Surface expansion opportunities to AMs with specific context. Flag upsell-ready accounts, build the handoff, and understand the revenue connection between customer health and growth.

Build the TAM playbook as a byproduct of execution: 30/60/90 framework, escalation paths, go-live checklists, and technical champion management.

Partner with Product and Engineering as the voice of the customer — turn customer pain into platform improvements and close the feedback loop.

Proven ability to manage a complex multi-stakeholder book simultaneously: know which fires to fight and which to watch, with prioritization judgment over process compliance

Strong project management instincts without being a "project manager" — can run a complex implementation end-to-end and keep 15 accounts moving at once

Excellent problem scoper: hears "it's broken" and turns it into a clear problem statement, routes it correctly on the first try, and drives to resolution

Strong communicator across altitudes — can run a daily standup with engineers and a QBR with a VP without losing substance in either direction

Commercially aware: sees the connection between customer health and revenue growth and actively drives consumption, retention, and expansion — not just satisfaction

High ownership, high autonomy: comfortable making decisions without asking permission and being accountable for customer outcomes

Fluent with AI agents and tools to manage account load, automate status tracking, and focus time on judgment-intensive work