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Viant Technology

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Sr. Software Engineer, Ad Serving

Viant Technology

Irvine, California, Unit... Engineering 1w ago

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Sr. Software Engineer, Ad Serving

Viant Technology · Irvine, California, United States; Los Angeles, California, United States

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Engineering Irvine, CA Los Angeles, CA Remote Posted May 1, 2026

WHAT YOU’LL DO

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.

THE DAY-TO-DAY

Provide technical expertise to implement and deliver various web and other system projects.
Organize and participate in review sessions, contributing design insights and collaborating in architectural discussions.
Participate in system testing to ensure quality deliverables and address issues through Root Cause Analysis (RCA).
Design, develop, and maintain scalable, high-performance systems with an emphasis on cost, scalability, and fault tolerance.
Contribute to the development and continuous review of existing projects while identifying opportunities for future improvements.
Engage in all phases of the software development lifecycle, from concept to deployment.
Work on optimizing application performance, focusing on low-latency and high-throughput requirements.
Interface with program managers, developers, and cross-functional teams for project-based assignments.

QUALIFICATIONS AND REQUIREMENTS

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.
Experience with AWS and related cloud technologies (e.g., EC2, S3, Lambda, RDS).
Expertise in designing and implementing scalable, high-performance distributed systems, including the ability to develop detailed design specifications.
Familiarity with multithreading, concurrency, and low-latency application development.
Expert ability to effectively identify and resolve project issues in a timely manner.
Ad-tech experience preferred.

LIFE AT VIANT

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.

Base compensation range: $120,000 - $180,000

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 Technology (NASDAQ: DSP) is an exclusively buy-side, AI-powered advertising platform purpose-built for CTV. Viant uniquely combines proprietary content intelligence, household-level identity resolution, and person-level attention signals to connect advertisers with real customers and drive measurable outcomes across the open internet. Through its award-winning AI solutions, Viant is building the future of autonomous advertising, where AI doesn't just assist the campaign, it delivers real results. Learn more at viantinc.com.

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.

By clicking “Apply for this Job” and providing any information, I accept the Viant California Personnel Privacy Notice.

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