Senior Software Engineer – Core Video

About Loom:Loom is on a mission to empower everyone at work to communicate more effectively, wherever they are. We are already trusted by over 4M users across 90k+ companies. Our customers are global and use Loom at work at world-class companies including HubSpot, Square, Uber, GrubHub, and LinkedIn.
Founded in 2016, Loom has raised $73 million from top-tier investors including Sequoia Capital, Kleiner Perkins, the Slack Fund, and the founders of Instagram, Figma, and Front.
The Role:Loom is looking for an engineer to join our Core Video team to propel the efficiency, reliability, and speed of our video creation, editing, and viewing experiences forward. As a member of this team, you will create and optimize cross-platform technologies that power our video products. Our small Core Video team builds the technology directly responsible for the magical experience that Loom is known for providing its users, joining it, you will be at the core group of individuals determining our path for innovation.


  • Architect and build features for our native recording layers on our Windows and Mac applications with minimal impact to client-side performance
  • Lead the design and implementation of features that make people reconsider the idea that creating that perfect video has to take a long time
  • Investigate performance and reliability issues within our video pipeline that will directly impact our recording success rates, and therefore the perception of Loom’s overall brand
  • Architect and build an efficient view processing pipeline so that our recordings are instantly available and viewable under various network conditions
  • Work intimately with our infrastructure team to optimize our ingest layer for our global userbase
  • Have ownership and input over the Core Video team’s roadmap and, therefore, significantly impact the company’s strategy
  • Optimize your code for developer efficiency and make it work on all the platforms that Loom offers its recording products on (iOS, Android, Mac, Windows, Chrome Extension)

What We’re Looking For:

  • 4+ years of experience working with media processing and media encoding technologies
  • Passion for opening black boxes to solve an existing problem
  • In-depth understanding of how one or more of the following work: HLS, H.264, Matroska, DASH
  • Experience with languages that require memory management implementation
  • Comfortable with ffmpeg and ffprobe
  • Experience with realtime systems, threading, and concurrency

Perks at Loom:* Competitive compensation and equity package* 99% company paid medical, dental, and vision coverage for employees and dependents (for US employees)* Flexible Spending Account (FSA) and Dependent Care Flexible Spending Account (DCFSA)* Healthcare reimbursement (for International employees) * Life insurance* Long-term disability insurance* 401(k) with 5% company matching* Professional development reimbursement* Mental health and wellness reimbursement* Gym reimbursement* Unlimited PTO * Paid parental leave* Remote work opportunities * Yearly off-site retreats (this year was in Barbados) SF office perks* Daily lunch on-site* Unlimited snacks & drinks* Remote week every other month
Remote-specific perks* Home office & technology reimbursement* Co-working space reimbursement * New-Hire on-boarding in San Francisco (optional)
Loom = Equal Opportunity Employer:We are actively seeking to create a diverse work environment because teams are stronger with different perspectives and experiences.
We value a diverse workplace and encourage women, people of color, LGBTQIA individuals, people with disabilities, members of ethnic minorities, foreign-born residents, older members of society, and others from minority groups and diverse backgrounds to apply. We do not discriminate on the basis of race, gender, religion, color, national origin, sexual orientation, age, marital status, veteran status, or disability status. All employees and contractors of Loom are responsible for maintaining a work culture free from discrimination and harassment by treating others with kindness and respect.
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