Senior Software Engineer Opportunity @ Netflix! Job posting at http://nflx.it/20E1VH1.

1. Playback Access Team
Enabling Fast, Reliable & Secure Streaming of Netflix Content
Karen Casella
Engineering Leader
(kcasella@netflix.com)

2. World’s Leading Internet TV Network...
● 81+ Million Members
● 1000+ Device Types
● 190+ Countries
● Commercial-free
○ TV
○ Movies
○ Original Content
● 125+ Million Viewing Hours/Day

3. … with HUGE Global Opportunity...
Global broadband households continue to grow:

4. ...at Massive Scale...
Peak Period Applications: North America

5. ...with an Innovative Culture
“Freedom & Responsibility”
Every Netflix employee has the freedom to do their best work and the
responsibility to achieve excellence.
● Values (passion, courage, innovation, selflessness) are what we value.
● We demand high performance.
● We embrace context and avoid control.
● Our teams are highly aligned and loosely coupled.
● We pay top of market.
Netflix Culture Slides: http://www.slideshare.net/reed2001/culture-1798664

6. Playback Access Team
The Playback Access team builds and operates the server-side infrastructure
needed to enable secure access to streaming content:
● Device Activation, Authentication, Authorization
● License Services / Digital Rights Management (DRM)
● Policy Enforcement

7. Team is Critical to Playback Experience
Playback
Access Team
Domain

8. Device Activation...
?
?

9. … for 1000+ Device Types (and growing!)
http://devices.netflix.com

10. Access to Protected Content
… or What happens when you push “PLAY”?
● This user
● This device
● This content
● This resolution
License!
No License
Playback Access Services
● Valid user / device
● Content usage / resolution policies
● Plan / device limits enforcement
● DRM / License generation

11. Challenge: Performance / Availability / Scalability
Playback Access services are in the critical path for the Netflix user experience
● Services must be performant
● Services must be available with a 99.99% SLA
● Services must scale dynamically, e.g., to support Starts Per Second:
Using techniques like Predictive Auto Scaling ( http://techblog.netflix.com/2013/11/scryer-netflixs-predictive-auto-scaling.html)

12. Challenge: Resilience
● The Simian Army is a group of programs
that intentionally introduce errors into our
systems to proactively try and ferret out
problems that typically get detected during
a production alert.
See http://techblog.netflix.com/2011/07/netflix-simian-army.
html and related Netflix technical blog posts for more detail.

13. DevOps Culture
Insights into our systems enables
Operational Excellence

14. Playback Access Technology Stack

15. Developer Tools: Code, Build, Bake, Deploy

16. Current Projects (just a sample!)
● Enabling New Viewing Experiences
● DRM Server Re-architecture
● Subscription Plan Limit Enforcement Enhancements
● Centralized Device / User Authentication Service
● Integrating Netflix on new Device Types
● Further Architectural Decomposition into Micro-Services
● Performance, Reliability, Resilience Enhancements
● Improved Operational Insights / Metrics

17. What Will You Do?
● Develop cloud-based device authentication and content access solutions that are
useful for improving the Netflix user experience
● In partnership with device teams, develop new ways to stream Netflix
● Integrate enhanced DRM capabilities to securely enable faster playback, more HD
content, etc.
● Take end-to-end ownership of major features and components
● Expand your knowledge, working quickly on cutting edge technologies
● Have fun!

18. About You
● Strong object oriented design and programming (Java, C# or C++, ) skills
● Experience delivering scalable distributed systems, preferably in the cloud
● Bonus: exposure to security concerns / technologies and protocols
○ You don’t need to be a security expert to be successful on our team!
● You:
○ Love solving tough problems
○ Enjoy working collaboratively with other engineers
○ Like to ship and support solutions that you design and build
○ Are curious about technology and love to learn and grow as an engineer
○ Consider writing code your craft and you write code for fun

19. Interested?
Job Posting: https://jobs.netflix.
com/jobs/860522
Karen Casella
Engineering Leader
(kcasella@netflix.com)