AI/ML Applied Engineer jobs in United States
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Karumi (YC F25) · 1 month ago

AI/ML Applied Engineer

positionSan Francisco, CA
timeFull-time
remoteOnsite
seniorityMid, Senior Level

Karumi is a fast-growing company focused on building cutting-edge voice AI and browser automation technologies. The AI/ML Applied Engineer will work on creating intelligent agents that interact naturally with users, optimizing AI systems for production reliability, and ensuring high performance in real-time environments.

Artificial Intelligence (AI)Customer ServiceSaaSSales
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H1B Sponsorednote

Responsibilities

Build and optimize voice AI systems using speech-to-text and text-to-speech models
Design browser agents that navigate, understand, and interact with web applications
Implement browser automation with computer vision and DOM understanding
Engineer prompt systems and LLM workflows for consistent, intelligent behavior
Create evaluation frameworks to measure voice quality, agent accuracy, and user experience
Integrate multimodal AI - combining voice, vision, and language understanding
Build real-time AI pipelines where latency and reliability are critical
Manage the AI Infrastructure and take care of it
Monitor and improve AI system performance in production environments

Qualification

Production experience with LLMsHands-on work with speech AIBrowser automationPython skillsPrompt engineeringDebug complex AI behaviorsSoftware engineering fundamentalsExperience building autonomous agentsComputer visionFine-tuning language modelsReal-time audio processingBackground in NLP

Required

Production experience with LLMs (OpenAI, Anthropic, or open-source models)
Hands-on work with speech AI (STT/TTS systems like Deepgram, ElevenLabs, Whisper)
Experience with browser automation (Playwright, Puppeteer, Selenium) or computer vision
Strong Python skills with async programming and real-time systems
Understanding of prompt engineering, retrieval systems, and agent frameworks
Ability to debug complex AI behaviors and build observability tools
Software engineering fundamentals for production AI systems

Preferred

Experience building autonomous agents or multi-step AI workflows
Knowledge of computer vision for UI understanding and visual grounding
Fine-tuning or training language models for specialized tasks
Real-time audio processing and streaming architectures
Background in NLP, machine learning research, or AI systems

Benefits

Meaningful equity stake in a backed, fast-growing company
Gym
Visa sponsorship available

Company

Karumi (YC F25)

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Karumi is an AI agent that can hop on a live video call with your prospects and deliver tailored product demos — 24/7, in any language.
dateFounded in 2025
location
San Francisco, California, USA
people-size2-10 employees
web-link
https://www.karumi.ai/

Funding

Current Stage
Early Stage
Total Funding
unknown
2025-12-03Seed

Leadership Team

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Pablo Muro
Co-Founder
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Company data provided by crunchbase