---
title: 'Senior Full Stack Engineer at Mux'
canonical: 'https://feeny.ai/job/senior-full-stack-engineer-mux-united-states-hba8yzyzndvf'
type: 'job'
last_seen: '2026-10-16'
---

# Senior Full Stack Engineer at Mux

- **Company:** Mux
- **Location:** United States
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-10-06
- **Last confirmed live:** 2026-10-16
- **Apply:** https://jobs.ashbyhq.com/mux/bd297d04-e5c5-4ee9-9a3f-db0951825e2d

## Job description

## About Mux

Mux is video for developers. Our mission is to democratize video by solving the hard problems developers face when building video: video encoding and streaming (Mux Video), video monitoring (Mux Data), and more. Video is a huge part of people’s lives, and we want to help make it better. We’re committed to building a healthy team that welcomes diverse backgrounds and experiences. We want people who care about our mission, are ready to grow, believe in our values (from Be Human to Turn Customers Into Fans), and want to improve the people around them. You’ll join a [tight-knit team](https://mux.com/team/) with experience at places like Google, YouTube, Twitch, Reddit, Zencoder, Fastly, and more. Our founders previously started (and sold) Zencoder, an early leader in cloud video technology, and authored Video.js, the biggest HTML5 video player on the web. We organize [Demuxed](https://demuxed.com/), the premier conference for video engineers in the world. We’re backed by top investors like Coatue, Accel, Andreessen Horowitz, and Y Combinator. You’ll get to work with amazing companies: hundreds of startups, plus Strava, Patreon, Vimeo, Robinhood, PBS, and Equinox. Customers, large and small, love working with us and love our team. We are building something big together. We’d love to hear from you!

## About the Role

As a Senior Full Stack Engineer at Mux, you will build and manage scalable and highly available applications and services that can reliably support our products' feature development and growing traffic. The Platform Experience team is focused on providing a consistent, effective platform experience for customers. You will work on ensuring our customer-facing platform is resilient and will also be writing new application code to support product features. We’re looking for engineers that love both systems and application-level challenges across various teams, who will take on strong ownership of critical product infrastructure, and enjoy being part of an inclusive and creative Engineering team.

## What You'll Do

- Work with your team to collaborate and execute on product goals and technical roadmap.
- Develop user-facing, product-focused features in our Elixir and Go backend services and our React frontend.
- Building and scaling our billing and usage platform that supports all Mux products.
- Working on identity and account management product features.
- Working on distributed notifications such as application webhooks and alerting features.

## Who You Are

- We are hiring senior level software engineers (6+ years of experience).
- You’re a strong engineer comfortable working across multiple platforms and environments.
- Solid engineering fundamentals (CS degree a plus).
- Track record of working on hard problems including job scheduling, concurrency, and scaling.
- Experience in JavaScript/TypeScript and React.
- Experience building REST APIs that people enjoy using. Elixir experience is a big plus, but Go, Python, Ruby, Node, or other general-purpose programming languages are also great.
- Experience deploying complex applications on cloud platforms using a container orchestration platform, such as Kubernetes.
- Experience working with SQL databases. ClickHouse experience is a plus.
- You enjoy fast-paced, highly collaborative environments and working across many different areas.
- Video experience is a plus but not required.

We have a supportive culture that cares about both excellent work and work-life balance. We have office spaces in Downtown San Francisco, New York City, and London

U.S. Benefits

- Flexible vacation + 11 company holidays
- Weekly no-meeting days + quarterly focus weeks
- Competitive health, dental, and vision insurance, including fertility
- FSA and HSA available
- Short-term and long-term disability insurance
- Group life insurance
- Travel accident insurance
- 401(k)
- Paid parental leave
- Professional Development program
- Lunch, internet, & ancillary equipment reimbursements

UK Benefits

- Competitive annual leave policy (25 days annual leave plus 8 public holidays)
- Weekly no-meeting days + quarterly focus weeks
- Private medical and dental insurance, and a vision stipend, including fertility
- Short-term and long-term disability insurance
- Group life assurance
- Travel accident insurance
- Matched Pension
- Paid parental leave
- Professional development program
- Team social events
- Lunch, cafe, & ancillary equipment reimbursements

Mux is an Equal Opportunity employer committed to building a diverse company. We believe diversity makes us better, and we strive to be inclusive and equitable. That’s why we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status or disability status.

## About Mux

## Company Overview
- **One-liner**: Mux provides video infrastructure APIs for developers to build, stream, analyze, and enrich video content at scale.
- **Entity Type**: Private (Series D)
- **Headquarters**: San Francisco, California, United States (also London office)
- **Founded**: 2015
- **Founders**: Jon Dahl, Steve Heffernan, Matt McClure, Adam Brown

## Core Business
- **Industry**: Video streaming infrastructure, video analytics, AI-powered video workflows
- **Target Customers**: B2B (developers, product teams at startups to large enterprises)
- **Mission**: Democratize video by solving hard problems developers face when building video: encoding/streaming, monitoring/analytics, and AI enrichment.

## Products & Services
- **[Mux Video](https://www.mux.com/)**: API for video encoding, storage, and streaming (on-demand and live) with low latency (as low as 4 seconds) and support for SRT, RTMP, HEVC. Also includes automated captioning, chaptering, and AI workflows.
- **[Mux Data](https://www.mux.com/)**: Real-time video analytics tracking engagement metrics like views, playing time, retention, and top content. Included with Mux Video.
- **[Mux Robots](https://www.mux.com/)**: Pre-built and custom AI workflows for video – content moderation, summarization, chapter generation, translation, key moment detection, and question-answering.

## Market Standing
- **Valuation**: Not disclosed (conflicting reports – not publicly available)
- **Key Metric**: Total funding $174M (Series D led by Coatue in May 2021)
- **Estimated Revenue**: $12M annually per third-party data ([LinkedIn company profile](https://www.linkedin.com/company/mux))
- **Notable Investors**: Coatue, Accel, Andreessen Horowitz, Y Combinator, Susa Ventures
- **Notable Customers/Partners**: Reddit, Vimeo, Robinhood, CBSi, Discovery, PBS, TED, Patreon, Typeform, Glassdoor, Synthesia, Maestro (Commerce-UI)
- **Growth Signals**:
  - Headcount of ~88 employees (+27.3% YoY, +35 people)
  - 9+ prior funding rounds including a $105M Series D in 2021
  - Launched Mux Robots (AI workflows) natively in the video pipeline in 2025–2026
  - Acquired Stream Club (2021) and Demuxed Foundation (conference)

## Competitive Advantages
- **Developer-first API design**: Clean, well-documented APIs and SDKs that allow building video in “minutes not months.”
- **Low-latency streaming**: Sub-4 second live latency with SRT/HEVC support.
- **Open-source roots**: Founders created Video.js, the most widely deployed HTML5 video player (used by Instagram, Twitter, Microsoft).
- **Community and expertise**: Organizes Demuxed, the premier conference for video engineers; team includes veterans from Google, YouTube, Twitch, Brightcove, Zencoder.
- **Integrated AI**: Video analysis workflows (moderation, summarization, translation, chaptering) built directly into the pipeline, reducing need for third-party tools.

## Strategic Focus
- Expanding AI-native video workflows (Mux Robots) to enable developers to “turn video files into video features” (translate, summarize, moderate, etc.).
- Scaling self‑serve adoption and enterprise partnerships (e.g., Vercel Marketplace, Typeform).
- Continuing to reduce latency and cost for live and on‑demand streaming while maintaining reliability.
- Growing the developer community and open‑source contributions (Video.js, Demuxed).

## Why Work Here
- **Culture**: Values include “Be Human,” “Customers = Fans,” “Be clear and direct,” “Bias for action,” “Care obsessively.” Emphasis on building a diverse and inclusive team.
- **Remote/Hybrid**: “Remote-equal” with physical offices in Downtown San Francisco and London. No‑meeting Thursdays and focus weeks every quarter.
- **Benefits**:
  - Flexible vacation & paid company holidays
  - Competitive health insurance (100% employee, 65% dependents)
  - Family‑friendly: paid leave, funded fertility benefits, SNOO rental
  - Professional development stipends
  - 3‑day/week lunch for both in‑office and remote employees
  - Equipment, SVOD, and cell phone reimbursement
- **Team**: Tight‑knit group of ~88 people with deep video expertise; opportunity to work with customers like Reddit, Robinhood, TED, Patreon.
- **Engineering culture**: Strong focus on quality (“every frame matters”), open‑source contributions, and attending/conferencing (Demuxed).

## Sources
1. [Mux.com](https://www.mux.com/)
2. [Mux Jobs Page](https://www.mux.com/jobs)
3. [Mux Careers (Ashby)](https://jobs.ashbyhq.com/mux)
4. [Mux Team Page](https://www.mux.com/team)
5. [Mux LinkedIn Profile](https://www.linkedin.com/company/mux)

## Other roles at Mux

- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-kpler-greece-0eakbych842n) — Greece
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-h-company-london-hpack26mhfaa) — London, United Kingdom
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-dealpath-san-francisco-8te13yk7n0c9) — San Francisco, CA
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-dealpath-new-york-yvxej2nk4f2s) — New York, NY
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-oddball-washington-9bjcnyf1dxep) — Washington, DC
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-simplisafe-boston-dn4nw76z7xkz) — Boston, MA
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-lilt-washington-b78y6bhxvv28) — Washington, DC
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-nourish-san-francisco-pty5rnhk1g23) — San Francisco, CA
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-bounteous-mexico-twbya6jd6p1z) — Mexico
- [Senior Full Stack Engineer](https://feeny.ai/job/senior-full-stack-engineer-workstream-vancouver-wxes2k8weysn) — Vancouver, Canada