---
title: 'Senior Researcher at AssemblyAI'
canonical: 'https://feeny.ai/job/senior-researcher-assemblyai-remote-s8jc3bfg6w4h'
type: 'job'
last_seen: '2026-10-16'
---

# Senior Researcher at AssemblyAI

- **Company:** AssemblyAI
- **Location:** Remote
- **Work type:** remote
- **Posted:** 2026-09-01
- **Last confirmed live:** 2026-10-16
- **Apply:** https://job-boards.greenhouse.io/assemblyai/jobs/4729671005

## Job description

## Why AssemblyAI

AssemblyAI builds the best-in-class Voice AI models powering the next generation of voice applications. Our models serve 600M+ inference calls monthly, process 1M+ hours of audio daily, and power 2 billion+ end-user experiences. The Voice AI space is at an inflection point; we’re looking for folks truly excited to join a small team and help define the future of the industry.

We are one of the most capital-efficient AI companies on the planet - with under 100 people generating roughly $600K ARR per employee, we sit among the top 5 most revenue-dense teams within the fastest-growing AI companies today. That's not an accident; it's a deliberate choice to stay lean, move fast, and give every person on the team outsized ownership and impact. With thousands of customers including Granola, Fireflies, Figure AI, and CallRail, the company has real scale - processing over 2 million hours of audio daily and handling more than 1 million API calls every day. This is a rare growth-stage opportunity where the business is proven and the trajectory is steep, but the team is still small enough that your fingerprints are on everything.

If you've ever felt buried under layers of bureaucracy, starved of real ownership, or frustrated watching your work disappear into a slow-moving org, AssemblyAI is built differently. The company operates as a true meritocracy, with no heavy planning or approval processes and no gatekeeping on the tools or information you need. For anyone who genuinely cares about voice AI, not as a trend to chase, but as a technology to build,  this is the place where the most interesting problems at the most interesting scale are being solved by a team small enough that you'll actually know everyone's name.

We’re committed to creating a space where our employees can bring their full selves to work and have equal opportunity to succeed. No matter your race, gender identity or expression, sexual orientation, religion, origin, ability, age, veteran status, if joining this mission speaks to you, we encourage you to apply!

## About the Role

You’ll join the team of researchers and engineers behind AssemblyAI’s foundational speech models. The team trains, fine-tunes, and analyzes these models, and builds the tooling to do that at scale. Your work will become the foundation for every customer around the world who builds Voice AI on our platform.

We’re passionate about Speech AI and the real-world products it makes possible, and we know the field moves fast. Keeping our models ahead means problems can’t stall at team boundaries, so this role is cross-functional by design. You’ll work closely with research, infrastructure, and production engineering. Your job isn’t to hand problems off between those teams. You’ll learn enough of each domain to follow a problem all the way to resolution.

## What You’ll Do

- Research and develop new methods that push the frontier of Speech AI.
- Improve the data our models learn from: investigate quality issues, build tooling that surfaces them, and turn what you find into measurable accuracy gains.
- Analyze the accuracy of production models, build evaluation harnesses, and work out which improvements will matter most to customers.
- Partner with researchers and engineers to turn research prototypes into production-ready systems, modernizing model architectures and inference stacks along the way.
- Find and fix performance bottlenecks across our training stack.

## What You’ll Need

- Hands-on experience training or adapting (e.g., fine-tuning) frontier speech or multimodal language models.
- Discipline in measurement and analysis. You stay skeptical of results, whether they come from you or a coding agent, until they hold up. You treat an unexplained improvement as a problem and dig in until you understand it.
- Appetite for the whole pipeline. You bring deep expertise in your core area, but when a customer issue traces back to a data problem or an evaluation blind spot, you want to chase it down yourself. The people who thrive here went deep in one area first, then kept expanding outward.
- Enthusiasm for building and sharing tools. Working at the frontier means the tools you need often don’t exist yet. You enjoy building your own for performance analysis and data processing, and you share them so their value compounds across the team.
- Self-direction. You find problems on your own, run investigations with a high degree of autonomy, and focus on the work with the highest impact.

Strong Python skills.

Pay Transparency:

AssemblyAI strives to recruit and retain exceptional talent from diverse backgrounds while ensuring pay equity for our team. Our salary ranges are based on paying competitively for our size, stage, and industry, and are one part of many compensation, benefit, and other reward opportunities we provide.

There are many factors that go into salary determinations, including relevant experience, skill level, qualifications assessed during the interview process, and maintaining internal equity with peers on the team. The range shared below is a general expectation for the function as posted, but we are also open to considering candidates who may be more or less experienced than outlined in the job description. In this case, we will communicate any updates in the expected salary range.

The provided range is the expected salary for candidates in the U.S. Outside of those regions, there may be a change in the range which will be communicated to candidates throughout the interview process.

Salary range: $270,000 - $310,000 AI to Interview:

If you’re selected for an interview, please review this [resource](https://www.assemblyai.com/candidate-ai-guidance) to better understand how AssemblyAI approaches the use of AI in our interview process.

GDPR privacy notice:

Candidates from the EU should review [this job applicant privacy notice](https://www.assemblyai.com/legal/gdpr-job-applicant-and-worker-privacy-notice) before applying.

Keep Exploring AssemblyAI:

[Speech-to-text](https://www.assemblyai.com/products/speech-to-text) | [Streaming speech-to-text](https://www.assemblyai.com/products/streaming-speech-to-text) | [Speech Understanding](https://www.assemblyai.com/products/speech-understanding) | [LLM Gateway](https://www.assemblyai.com/products/llm-gateway)[Try the Playground](https://www.assemblyai.com/playground/source) [Our $50M Series C fundraise](https://www.assemblyai.com/blog/announcing-our-50m-series-c-to-build-superhuman-speech-ai-models/) [Check us out on YouTube!](https://www.youtube.com/@AssemblyAI)

## About AssemblyAI

## Company Overview
- **One-liner**: AssemblyAI provides developer-first Voice AI infrastructure to transcribe, understand, and act on human speech.
- **Entity Type**: Private (Series C)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2017
- **Founders**: Dylan Fox

## Core Business
- **Primary industry/industries**: Voice AI, Speech Recognition, Artificial Intelligence Infrastructure
- **Target customers**: B2B – developers, enterprises, and product teams building voice-enabled applications (e.g., meeting assistants, voice agents, contact centers, medical scribes)
- **Mission or purpose statement**: “Advancing and democratizing Voice AI technology for the world” – creating superhuman Voice AI models to unlock new classes of applications leveraging voice data [assemblyai.com/about](https://www.assemblyai.com/about)

## Products & Services
- **Pre-recorded Speech-to-Text API**: Transcribe recorded audio and video with industry-leading accuracy.
- **Real-time Speech-to-Text API**: Live transcription for voice agents, captions, and agent assist.
- **Voice Agent API**: Speech-to-speech agents over a single WebSocket.
- **Speech Understanding API**: Extract structured insights (speaker identification, key information, etc.) from transcripts.
- **Guardrails**: PII redaction, profanity filtering, and content moderation on transcripts.
- **LLM Gateway**: Apply frontier language models to voice workflows.

All offered as APIs with usage-based pricing [assemblyai.com](https://www.assemblyai.com/).

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total Funding – **$158.1M** across five rounds (Seed, Venture, Series A, B, C)
- **Notable Investors/Partners**: Accel (lead in Series A, C), Insight Partners (lead in Series B), Y Combinator, Daniel Gross, Nat Friedman, Patrick and John Collison, Smith Point Capital.
- **Growth Signals**: 
  - Processes over **1M hours of audio daily** and **600M+ inference calls monthly**; powers **2B+ end-user experiences**. [greenhouse.io job board](https://job-boards.greenhouse.io/assemblyai/jobs/4648353005)
  - Universal-Streaming model released mid-2025 drives **25x usage growth in streaming** over six months, now processing ~1.5M streaming hours per week.
  - Headcount of 69 employees (‑12.2% YoY) [LinkedIn](https://www.linkedin.com/company/assemblyai)
  - Annual revenue estimated at $10M (LinkedIn estimate) [LinkedIn](https://www.linkedin.com/company/assemblyai)

## Competitive Advantages
- **Research-oriented organization**: Team includes interdisciplinary research leaders, scientists, and engineers dedicated to advancing state-of-the-art Voice AI [assemblyai.com/about](https://www.assemblyai.com/about).
- **Best accuracy-latency-cost tradeoff** in the industry, especially with the Universal-Streaming model.
- **Developer-first API** with simple usage-based pricing and comprehensive documentation, lowering barriers to adoption.
- Proven at scale with enterprise customers like Zoom, Granola, Fireflies, Cluely, and Calabrio.

## Strategic Focus
- Continue advancing Voice AI models (e.g., promptable speech recognition, multilingual support) to enable entirely new application categories.
- Scale adoption among AI-native startups and large enterprises.
- Maintain velocity in research and product releases (recently shipped Universal-Streaming, keyterms prompting, and multilingual features).

## Why Work Here
- **Remote-first culture** with a global team spanning 16 countries; physical offices in New York and San Francisco [assemblyai.com/careers](https://www.assemblyai.com/careers).
- **Competitive compensation**: market-rate salaries, equity grants for all employees, uncapped PTO, up to 4% 401k match (US-based), $1,000 home office stipend.
- **Premium benefits**: medical/dental/vision with up to 100% premium coverage for employee and family, HSA/FSA, disability, life insurance.
- **Team offsites**: regular company and team retreats in various locations.
- **Engineering culture**: focus on interdisciplinary research, fast shipping, and building one of the next great AI companies. Open roles include Senior Software Engineer (Go – LLM Team), Forward Deployed Engineer, and Developer Relations Evangelist [greenhouse.io](https://job-boards.greenhouse.io/assemblyai/jobs/4648353005).

## Sources
1. [assemblyai.com – About](https://www.assemblyai.com/about)
2. [assemblyai.com – Careers](https://www.assemblyai.com/careers)
3. [assemblyai.com – Homepage](https://www.assemblyai.com/)
4. [LinkedIn – AssemblyAI Company Page](https://www.linkedin.com/company/assemblyai)
5. [Greenhouse – AssemblyAI Job Board](https://job-boards.greenhouse.io/assemblyai/jobs/4648353005)

## Other roles at AssemblyAI

- [Head of GTM, Europe](https://feeny.ai/job/head-of-gtm-europe-assemblyai-london-5tfkwebn5pmh) — London, United Kingdom
- [GTM Recruiter](https://feeny.ai/job/gtm-recruiter-assemblyai-remote-xps2q35grmy8)
- [Sr. Technical Recruiter](https://feeny.ai/job/sr-technical-recruiter-assemblyai-remote-s45f796axg2a)
- [Enterprise Account Executive](https://feeny.ai/job/enterprise-account-executive-assemblyai-san-francisco-s9hfqex99st8) — San Francisco, CA
- [Finance Engineer](https://feeny.ai/job/finance-engineer-assemblyai-united-states-rtsf256mecxk) — United States
- [Head of Sales, Digital Native](https://feeny.ai/job/head-of-sales-digital-native-assemblyai-san-francisco-g47vyfnbxhme) — San Francisco, CA
- [Security Operations Engineer](https://feeny.ai/job/security-operations-engineer-assemblyai-united-states-nhaqyhqyph7q) — United States
- [Senior Software Engineer, Inference](https://feeny.ai/job/senior-software-engineer-inference-assemblyai-united-kingdom-kbxewr0aekfs) — United Kingdom
- [Senior Software Engineer, Inference](https://feeny.ai/job/senior-software-engineer-inference-assemblyai-north-qg84cv6dtfp4) — North, United States
- [Senior GTM AI Engineer](https://feeny.ai/job/senior-gtm-ai-engineer-assemblyai-north-qkm688ebfcyf) — North, United States