Sr. Software Engineer, Runtime

Irvine, CA / Los Angeles, CA / Seattle, Washington / San Francisco, CA
Technology & Development – Engineering /
Full-time /

Viant’s customers use the Demand Side Platform (DSP) to set up, run and monitor ad campaigns. As a Sr. Software Engineer on our Runtime team, you will work directly with Viant’s ad server, managing a high-volume, low-latency application that processes billions of unique requests a day. This role offers a great opportunity to work with state-of-the-art technology as part of bid optimization, dynamic performance optimization, as well as develop a self-diagnostic and healing architecture. In this role, you will deliver simple, elegant, scalable, extensible solutions that strike the right balance between short-term and long-term considerations. You will design, develop, maintain, and trouble software features with an eye on cost, scalability, performance, and fault-tolerance. You will participate in design discussions, code reviews and bug triage / Root Cause Analysis (RCA) sessions.
Primarily supporting Viant DSP, you will collaborate with Product, other Engineering and Technical operations teams on the entire lifecycle from ideation to productization and beyond.


    • Provide technical expertise to implement and deliver various web and other system projects.
    • Organize and participate in review sessions and contribute to design insights for the projects.
    • Participate in system testing to ensure quality deliverables.
    • Contribute to the development and continuous review of the existing projects as well as participate in view and scope of future projects.
    • Engage in all phases of software development life cycle.
    • Interface with program managers and other developers for project-based assignments.


    • Minimum B.S in computer science or related fields preferred.
    • Strong foundation in computer science and OOP.
    • 5+ years of professional experience in the software industry.
    • Experience programming in GoLang or Java.
    • Experience with MySQL, Oracle and other database technologies.
    • Able to develop detailed design specifications.
    • Expert ability to effectively identify and resolve project issues in a timely manner.


    • Investing in our employee’s professional growth is important to us, but so is investing in their well-being. That’s why Viant was voted one of the BEST PLACES TO WORK!
    • Some our favorite employee benefits include fully paid health insurance, paid parental leave and unlimited PTO and more. View a list of our benefits here.
$130,000 - $180,000 a year
In accordance with California law, the range provided is Viant’s reasonable estimate of the compensation for this role. Final title and compensation for the position will be based on several factors including work experience and education.

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About Viant

Viant® (NASDAQ: DSP) is a leading people-based advertising technology company that enables marketers to plan, execute and measure omnichannel ad campaigns through a cloud-based platform. Viant’s self-service demand side platform (“DSP”) powers programmatic advertising across Connected TV, Linear TV, mobile, desktop, audio, gaming and digital out-of-home channels. As an organization committed to sustainability, Viant’s Adricity® carbon reduction program helps clients achieve their sustainability goals. In 2023, Viant was recognized by G2 as a Leader in the DSP category and as the Best Software in Marketing & Advertising, earned Great Place to Work® certification, and became a founding member of Ad Net Zero. Viant’s Co-Founders Tim and Chris Vanderhook were also recently named EY Entrepreneurs of the Year. 
Based in Irvine, CA, Viant has more than 334 employees in 10 offices around the U.S.  To learn more, please visit

Viant is an equal opportunity employer and makes employment decisions on the basis of merit.  Viant prohibits unlawful discrimination against employees or applicants based on race (including traits historically associated with race, such as hair texture and protective hairstyles), religion, religious creed, color, national origin, ancestry, physical disability, mental disability, medical condition, genetic information, marital status, sex, reproductive health decision making, gender, gender identity, gender expression, age, military status, veteran status, uniformed service member status, sexual orientation, transgender identity, citizenship status, pregnancy, or any other consideration made unlawful by federal, state, or local laws.  Viant also prohibits unlawful discrimination based on the perception that anyone has any of those characteristics, or is associated with a person who has or is perceived as having any of those characteristics.

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