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Zoom SDK Engineer in Des Moines, Iowa

Work Styles at Zoom

In most cases, you will have the opportunity to choose your preferred working location from the following options when you join Zoom: in-person, hybrid or remote. Visit this page for more information about Zoom's Workstyles ( .

About Us

Zoomies help people stay connected so they can get more done together. We set out to build the best video product 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.

Zoom is an award-winning workplace. Our culture focuses on delivering happiness, our commitment to transparency, and the tangible benefits we provide our employees and our customers.

The SDK Engineer will be responsible for cross-platform development, designing new features & and supporting the client & server teams to ensure Zoom Phone SDK is reliable and stable. They will provide continuous enhancements, and work with both internal & external customers on any issues they may have.

Zoom Phone SDK task design & development (40%)

  • Design the overall architecture for Zoom Phone tasks and communicate interfaces with server and client teams

  • This includes 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 make sure roll out features follow the release plan

  • Conduct integration testing with server and client teams.

    Zoom Phone SDK Stability & Improvements (20%)

  • Use Windows Performance Analyzer (WPA) or relevant tool, 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 a process

  • Perform sanity testing to prevent crash and regression issues

    SDK API auto testing and auto testing tool enhancement (10%)

  • Perform SDK API auto testing based on an internal tool

  • Maintain auto testing tools and improve those tools to support more automatic testing scenarios

    Troubleshoot customer issues and fix SDK bugs (15%)

  • Review customer tickets and work with support team, to analyze control flow, SIP flow and determine root cause

  • Examine client problem report on demand, analyze call details, and perform root cause analysis

  • Review bugs with the reporter to understand bugs and reproduced steps, then perform root cause analysis and determine a solution

  • Perform integration testing at the development branch and release branch to ensure the fix has no negative impact

    Work on new features requirements (10%)

  • 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 release and analyze client problem reports (5%)

  • Support client team with fire drill testing before rolling out new releases and check the production crash reports after new release roll-out

  • Work on enhancements for our automatic client report analysis tool

  • Track critical and important issues found in client problem reports

    Basic Qualifications:

  • Minimum 5+ years of work experience

  • BS degree in CS, EE or its related field

  • Solid knowledge of C/C++ and object-oriented programing

  • Good understanding of network communication & Multitask programming & Debugging skills

  • Familiar with network protocols, like TCP/UDP/TLS/RTP/SRTP/RTCP, etc.

  • Experience with VoIP technologies and audio quality control

  • Experience with SIP stacks is preferred (PJSIP , reSIProcate, FreeSWITCH, etc.)

  • Familiar with at least one IDE tool (e.g. Visual Studio) within one or more platforms(WIN/MAC/IOS/ANDROID)

  • Support other teams, follow up, and quickly resolve issues

  • Good teamwork and willingness to help others

  • Excellent communication skills

  • Flexibility and ability to work after hours

    Preferred Qualifications

  • Preferences MS degree in a related field

  • Degree in MIS

We believe that the unique contributions of all Zoomies is the driver of our success. To make sure that our products and culture continue to incorporate everyone's perspectives and experience we never discriminate on the basis of race, religion, national origin, gender identity or expression, sexual orientation, age, or marital, veteran, or disability status. Zoom is proud to be an equal opportunity workplace and is an affirmative action employer. All your information will be kept confidential according to EEO guidelines.

We welcome people of different backgrounds, experiences, abilities and perspectives including qualified applicants with arrest and conviction records and any qualified applicants requiring reasonable accommodations in accordance with the law. If you need any assistance or accommodations due to a medical condition, or if you need assistance accessing our website or completing the application process, please let us know by emailing us at

At Zoom, we care about our employees, their families, and their well-being. As part of our award-winning workplace culture and commitment to delivering happiness, our benefits program offers a variety of perks, benefits, and options to help employees maintain their physical, mental, emotional, and financial health; support work-life balance; and contribute to their community in meaningful ways. To view our benefits, click here ( .

Explore Zoom:

  • Hear from our leadership team (;!!K5ATeMLGHIlgtw!N_9bFG2WvSVHNjvQfjuOpRN_CRuOAVcjK-OUBF5KymSi-XOFAnfRCVoBcyNhxGRFJi6P$)

  • Browse Awards and Employee Reviews on Comparably

  • Visit our Blog (

  • Zoom with us!

  • Find us on social at the links below and on Instagram (

  • View more jobs, sign up for job alerts and join our talent community. Visit the Zoom careers site ( .