Netflix Playback Access Team

Jun 14, 20175 likes3,002 views

This document describes a senior software engineer opportunity with Netflix's Playback Access team. The team's mission is to enable a secure viewing experience for Netflix members by handling device activation and authentication, user authentication, content licensing through DRM, and license accounting. As a member of the team, the engineer would help develop scalable cloud-based solutions to improve the user experience and integrate enhanced security and DRM capabilities. Candidates should have strong object-oriented programming skills, experience with distributed systems, and an interest in solving challenging problems.

Senior Software
Engineer Opportunity
Playback Access Team
Enabling Fast, Reliable & Secure Streaming of Netflix Content

World’s Leading Internet TV Network
● Opportunity: > 700M Broadband Households
● 100M+ Members
● 190+ Countries
● 2000+ Device Types
● 125M+ Viewing Hours / Day
● Commercial Free
○ TV
○ Movies
○ Original Content

With Continued Growth
Source: https://www.statista.com/chart/9799/netflix-vs-cable-pay-tv-subscribers/

Innovative Culture: Freedom & Responsibility
Every Netflix employee has the freedom to do their best work and the
responsibility to achieve excellence.
Values Are What We Value
● Judgment
● Communication
● Impact
● Curiosity
● Innovation
● Courage
● Passion
● Integrity
● Selflessness
● Diversity & Inclusion
Netflix Culture �ݺ�ߣs

Playback Access Team
Team’s Mission
Enable a secure viewing experience
for our members and protect access
to Netflix content
Core Focus Areas
● Server-side Device Activation & Authentication
● User Authentication and Token Management
● Content Licensing via Digital Rights Management (DRM) server technologies
● License Accounting

Playback Access: Critical to Playback Experience
Playback
Access Team
Domain

For 2000+ Device Types (and growing)
http://devices.netflix.com

Access to Protected Content
Or, what happens when you push PLAY?
● This user
● This device
● This content
● This resolution
License!
Playback Access Services
● Valid user / device
● Content usage / resolution policies
● Plan / device limits enforcement
● DRM / License generation

Challenge: Performance / 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, to support Stream Starts per Second:
Using techniques like Predictive Auto Scaling (http://techblog.netflix.com/2013/11/scryer-netflixs-predictive-auto-scaling.html)

Challenge: Resiliency
The Simian Army is a group of programs that
intentionally introduce errors into our
systems to proactively find 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.

DevOps Culture: Operate What You Build
Insights into our systems enables
Operational Excellence

Developer Tools: Code, Build, Bake, Deploy
https://medium.com/netflix-techblog/how-we-build-code-at-netflix-c5d9bd727f15

What Will You Learn?
● 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!

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

Interested?
Karen Casella
Engineering Leader
kcasella@netflix.com
http://www.linkedin.com/in/kcasella
@kcasella
Current Openings
● Playback Licensing
● Playback & Edge Access Services

This document describes a senior software engineer opportunity with Netflix's Playback Access team. The team's mission is to enable a secure viewing experience for Netflix members by handling device activation and authentication, user authentication, content licensing through DRM, and license accounting. The role involves developing scalable, performant solutions to securely stream Netflix content to over 2000 device types used by over 100 million members globally. Candidates should have strong object-oriented programming skills, experience with distributed systems, and an interest in solving challenging problems through collaborative work.

Playback & Edge Access Services Senior Software EngineerKaren Casella

��

Senior Software Engineer Playback Access Team @ NetflixKaren Casella

��

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Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. Household combustion devices, motor vehicles, industrial facilities and forest fires are common sources of air pollution. Pollutants of major public health concern include particulate matter, carbon monoxide, ozone, nitrogen dioxide and sulfur dioxide. Outdoor and indoor air pollution cause respiratory and other diseases and are important sources of morbidity and mortality. WHO data show that almost all of the global population (99%) breathe air that exceeds WHO guideline limits and contains high levels of pollutants, with low- and middle-income countries suffering from the highest exposures. Air quality is closely linked to the earth’s climate and ecosystems globally. Many of the drivers of air pollution (i.e. combustion of fossil fuels) are also sources of greenhouse gas emissions. Policies to reduce air pollution, therefore, offer a win-win strategy for both climate and health, lowering the burden of disease attributable to air pollution, as well as contributing to the near- and long-term mitigation of climate change.

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US Patented ReGenX Generator, ReGen-X Quatum Motor EV Regenerative Accelerati...Thane Heins NOBEL PRIZE WINNING ENERGY RESEARCHER

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Preface: The ReGenX Generator innovation operates with a US Patented Frequency Dependent Load Current Delay which delays the creation and storage of created Electromagnetic Field Energy around the exterior of the generator coil. The result is the created and Time Delayed Electromagnetic Field Energy performs any magnitude of Positive Electro-Mechanical Work at infinite efficiency on the generator's Rotating Magnetic Field, increasing its Kinetic Energy and increasing the Kinetic Energy of an EV or ICE Vehicle to any magnitude without requiring any Externally Supplied Input Energy. In Electricity Generation applications the ReGenX Generator innovation now allows all electricity to be generated at infinite efficiency requiring zero Input Energy, zero Input Energy Cost, while producing zero Greenhouse Gas Emissions, zero Air Pollution and zero Nuclear Waste during the Electricity Generation Phase. In Electric Motor operation the ReGen-X Quantum Motor now allows any magnitude of Work to be performed with zero Electric Input Energy. Demonstration Protocol: The demonstration protocol involves three prototypes; 1. Protytpe #1, demonstrates the ReGenX Generator's Load Current Time Delay when compared to the instantaneous Load Current Sine Wave for a Conventional Generator Coil. 2. In the Conventional Faraday Generator operation the created Electromagnetic Field Energy performs Negative Work at infinite efficiency and it reduces the Kinetic Energy of the system. 3. The Magnitude of the Negative Work / System Kinetic Energy Reduction (in Joules) is equal to the Magnitude of the created Electromagnetic Field Energy (also in Joules). 4. When the Conventional Faraday Generator is placed On-Load, Negative Work is performed and the speed of the system decreases according to Lenz's Law of Induction. 5. In order to maintain the System Speed and the Electric Power magnitude to the Loads, additional Input Power must be supplied to the Prime Mover and additional Mechanical Input Power must be supplied to the Generator's Drive Shaft. 6. For example, if 100 Watts of Electric Power is delivered to the Load by the Faraday Generator, an additional >100 Watts of Mechanical Input Power must be supplied to the Generator's Drive Shaft by the Prime Mover. 7. If 1 MW of Electric Power is delivered to the Load by the Faraday Generator, an additional >1 MW Watts of Mechanical Input Power must be supplied to the Generator's Drive Shaft by the Prime Mover. 8. Generally speaking the ratio is 2 Watts of Mechanical Input Power to every 1 Watt of Electric Output Power generated. 9. The increase in Drive Shaft Mechanical Input Power is provided by the Prime Mover and the Input Energy Source which powers the Prime Mover. 10. In the Heins ReGenX Generator operation the created and Time Delayed Electromagnetic Field Energy performs Positive Work at infinite efficiency and it increases the Kinetic Energy of the system.

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Netflix Playback Access Team

1. Senior Software Engineer Opportunity Playback Access Team Enabling Fast, Reliable & Secure Streaming of Netflix Content

2. World’s Leading Internet TV Network ● Opportunity: > 700M Broadband Households ● 100M+ Members ● 190+ Countries ● 2000+ Device Types ● 125M+ Viewing Hours / Day ● Commercial Free ○ TV ○ Movies ○ Original Content

3. With Continued Growth Source: https://www.statista.com/chart/9799/netflix-vs-cable-pay-tv-subscribers/

4. At Tremendous Scale

5. Innovative Culture: Freedom & Responsibility Every Netflix employee has the freedom to do their best work and the responsibility to achieve excellence. Values Are What We Value ● Judgment ● Communication ● Impact ● Curiosity ● Innovation ● Courage ● Passion ● Integrity ● Selflessness ● Diversity & Inclusion Netflix Culture �ݺ�ߣs

6. Playback Access Team Team’s Mission Enable a secure viewing experience for our members and protect access to Netflix content Core Focus Areas ● Server-side Device Activation & Authentication ● User Authentication and Token Management ● Content Licensing via Digital Rights Management (DRM) server technologies ● License Accounting

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

8. Device Activation & Authentication ? ?

9. For 2000+ 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! Playback Access Services ● Valid user / device ● Content usage / resolution policies ● Plan / device limits enforcement ● DRM / License generation

11. Challenge: Performance / 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, to support Stream Starts per Second: Using techniques like Predictive Auto Scaling (http://techblog.netflix.com/2013/11/scryer-netflixs-predictive-auto-scaling.html)

12. Challenge: Resiliency The Simian Army is a group of programs that intentionally introduce errors into our systems to proactively find 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: Operate What You Build Insights into our systems enables Operational Excellence

14. Playback Access Technology Stack

15. Developer Tools: Code, Build, Bake, Deploy https://medium.com/netflix-techblog/how-we-build-code-at-netflix-c5d9bd727f15

16. What Will You Learn? ● 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!

17. 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

18. Interested? Karen Casella Engineering Leader kcasella@netflix.com http://www.linkedin.com/in/kcasella @kcasella Current Openings ● Playback Licensing ● Playback & Edge Access Services

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Netflix Playback Access Team

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