Applied AI Engineer
Assemblyai · San Francisco, New York, London
About this role
**Applied AI Engineer — AssemblyAI** **Why AssemblyAI** AssemblyAI builds best-in-class Voice AI models powering the next generation of voice applications. We run our own proprietary inference environment, serving **500M+ inference calls monthly** and processing **nearly 2M hours of audio daily**. We’re a rapidly scaling team defining the future of the industry—at a company with a super flat, meritocratic culture and real ownership. **About the role** Applied AI Engineers are the technical half of every deal at AssemblyAI. You’ll partner with two Digital Native Account Executives and own the technical side of their book—from the first customer conversation, to winning technical evaluations, to driving successful technical implementations. This is pre-sales engineering, but far more hands-on than a typical SE role. You’ll write code for customers, build MVPs, debug integrations, tune models on real customer audio, and ensure successful deployments. --- ## What you’ll do ### Customer-facing technical work - Join early (often on the first call) and be the developer’s direct line to AssemblyAI (typically via shared channels like Slack) - Help customers evaluate and test products: define success criteria, design fair benchmarks, and catch issues early (wrong model, bad truth files, misconfigured streams) - Tweak configurations and help customers design robust implementations for their use cases - Build demos, prototypes, and proofs of concept in the customer’s stack - Debug customer code and production issues across streaming and async APIs - Earn technical trust by staying close to customers and delivering first-class service - Collaborate with AEs on every account - Meet customers in person, including onsite visits (including international travel) - Stay through production rollout, then hand off cleanly to post-sale Forward Deployed Engineers ### Product and roadmap influence - Influence roadmap by bringing customer learnings to Product, Research, and Engineering; test new models/features before customers see them - Turn customer issues into reproducible cases for Research/Engineering and track patterns across accounts - Contribute to docs, guides, and example code to help developers integrate faster ### Community and events - Represent AssemblyAI at Voice AI meetups, conferences, and customer events - Build developer-facing resources shared publicly --- ## What you’ll need - Strong technical foundation (engineering degree, coding bootcamp, software engineering role, or sales/solutions engineering role) - Strong programming skills in **Python and/or TypeScript/JavaScript**, plus ability to read/debug other languages - Excellent written and verbal communication (you’ll write Slack messages, emails, and technical guides daily) - Experience with **web APIs, WebSockets, and real-time data streaming** - Understanding of audio fundamentals (sample rates, encodings, codecs) or strong drive to learn quickly - Fluency with AI tools (e.g., Claude/Cursor) to prototype, debug, and solve problems fast - High sense of urgency and persistence - Comfort with ambiguity and context-switching across multiple customers/priorities - Must be based in **San Francisco, London, or New York City**; expectation of **3 days/week in-office** and willingness to travel **~10–25%** --- ## Nice to have - Experience at a startup or API-first company - Customer-facing experience as a solutions engineer, sales engineer, or developer advocate - Hands-on work with v
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