SDK Engineer

at  Zoom

About the Team:
With eight specialized departments, the engineering team functions as a highly collaborative, diverse powerhouse. Each department mission is to deliver seamless and innovative communication solutions. These range from software development and machine learning to quality assurance teams that work to create and maintain Zoom’s user-friendly interfaces and robust infrastructure. The team continues to push the boundaries of communication technology, bringing people together regardless of their physical distance.

Responsibilities:

• Design the overall architecture for Zoom Phone tasks and communicate interfaces with server and client teams, including detailed control flow at SIP level, specific command requests and responses between client, server, and UI layers.
• Implement new features and unit test cases according to new feature implementation.
• Drive tasks across teams and ensure roll out features follow the release plan.
• Conduct integration testing with server and client teams.
• Use Windows Performance Analyzer (WPA) or relevant tools to prevent memory leaks in SDK code. Use Checkmarx to scan and fix SDK code issues.
• Use User-Mode Dump Heap (UMDH) to capture and analyze heap memory allocations for processes.
• Perform sanity testing to prevent crash and regression issues. Perform SDK API auto testing based on internal tools.
• Maintain auto testing tools and improve tools to support automatic testing scenarios.
• Review customer tickets and work with support teams to analyze control flow, SIP flow and determine root causes.
• Examine client problem reports on demand, analyze call details and perform root cause analysis.
• Review bugs and perform integration testing at the development branch and release branch to ensure the fix has no negative impact.
• Work closely with the product management team to define requirements, create user stories and collect use cases on new features.
• Collaborate with other engineering teams to confirm final design scope and assign task owners.
• Support client teams with fire drill testing before rolling out new releases and check the production crash reports after new release roll-outs.
• Work on enhancements for automatic client report analysis tools. Track critical and important issues found in client problem reports.

What we’re looking for:

• Requires a Bachelor’s degree in Computer Science, a related field, or a foreign equivalent. Must have 5 year of experience in job offered or related occupation.
• Must have 5 years of experience in: C/C++ programing; Object oriented programming; Network communication; Multi‐task programming and debugging; Network protocols such as TCP/UDP/TLS/RTP/SRTP/RTCP; VoIP technologies and audio quality control; SIP stacks (PjSIP, reSIProcate, FreeSWITCH); and IDE Tool (eg. Visual Studio).
• Telecommuting work permitted: position may work throughout various unanticipated locations throughout the US.

Company Name: Zoom Video Communications, Inc.

WAYS OF WORKING

Our structured hybrid approach is centered around our offices and remote work environments. The work style of each role, Hybrid, Remote, or In-Person is indicated in the job description/posting.

ABOUT US

Zoomies help people stay connected so they can get more done together. We set out to build the best collaboration platform for the enterprise, and today help people communicate better with products like Zoom Contact Center, Zoom Phone, Zoom Events, Zoom Apps, Zoom Rooms, and Zoom Webinars.
We’re problem-solvers, working at a fast pace to design solutions with our customers and users in mind. Here, you’ll work across teams to deliver impactful projects that are changing the way people communicate and enjoy opportunities to advance your career in a diverse, inclusive environment.

• Design the overall architecture for Zoom Phone tasks and communicate interfaces with server and client teams, including detailed control flow at SIP level, specific command requests and responses between client, server, and UI layers.
• Implement new features and unit test cases according to new feature implementation.
• Drive tasks across teams and ensure roll out features follow the release plan.
• Conduct integration testing with server and client teams.
• Use Windows Performance Analyzer (WPA) or relevant tools to prevent memory leaks in SDK code. Use Checkmarx to scan and fix SDK code issues.
• Use User-Mode Dump Heap (UMDH) to capture and analyze heap memory allocations for processes.
• Perform sanity testing to prevent crash and regression issues. Perform SDK API auto testing based on internal tools.
• Maintain auto testing tools and improve tools to support automatic testing scenarios.
• Review customer tickets and work with support teams to analyze control flow, SIP flow and determine root causes.
• Examine client problem reports on demand, analyze call details and perform root cause analysis.
• Review bugs and perform integration testing at the development branch and release branch to ensure the fix has no negative impact.
• Work closely with the product management team to define requirements, create user stories and collect use cases on new features.
• Collaborate with other engineering teams to confirm final design scope and assign task owners.
• Support client teams with fire drill testing before rolling out new releases and check the production crash reports after new release roll-outs.
• Work on enhancements for automatic client report analysis tools. Track critical and important issues found in client problem reports