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Open nowPosted 73 days ago

Sr. Full Stack Engineer

Viant Technology25 open roles

Pay
$150,000 – $180,000 a year
Where
Irvine, California, United States; Los Angeles, California, United States
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Your applicationOpen nowSr. Full Stack EngineerViant Technology · Irvine, California, United States; Los Angeles, California, United States

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The clock on this job

Early applications get read.

11.5% of postings close within 7 days. Measured by our own scanner across the market. Viant Technology postings stay open a median of 42 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.4%3 days
  3. 11.5%7 days
  4. 18.1%14 days
  5. 35.6%30 days
  6. 44.6%60 days
This job: posted 73 days ago

Viant Technology median: 42 days open

The posting

WHAT YOU’LL DO

Viant is looking for a Senior Software Engineer to join the Potens team and help evolve Magnus and Goliath, two internal platforms that power workflow orchestration and large-scale data exploration.

This is a hands-on, full-stack engineering role combining the modernization of mature production systems with the development of new AI-powered capabilities. You’ll work across Java and Go backend services, browser-based JavaScript applications, data platforms, and emerging AI technologies.

A key part of the role will be expanding how users and authorized AI agents interact with our platforms from creating and managing workflows to exploring BigQuery data, generating and executing SQL, and securely accessing platform capabilities through AI tools.

We’re looking for an engineer who enjoys solving complex production problems, working across the stack, and owning software from design through deployment and ongoing support.

Magnus is a visual workflow orchestration platform supporting BigQuery, Cloud Storage, MySQL, REST APIs, email, FTP, conditional routing, parallel execution, Go and JavaScript scripting, YAML workflow definitions, debugging, audit history, and access controls.

Goliath is a lightweight, high-performance BigQuery development interface for writing and executing SQL, browsing datasets and tables, visualizing results, and managing cost and quota allocation without requiring direct access to the GCP Console.

As these platforms evolve, you’ll help expand their AI capabilities, including enabling users and authorized AI agents to:

  • Create, understand, and modify Magnus workflows
  • Discover, execute, and monitor workflows through MCP
  • Explore BigQuery datasets and schemas through Goliath
  • Generate, execute, and interpret SQL using AI
  • Securely access platform capabilities through permission-aware AI tools

THE DAY-TO-DAY

  • Maintain and modernize Magnus Java applications, REST APIs, and Goliath’s JavaScript/jQuery frontend
  • Develop and support backend capabilities using Java and Go
  • Build production AI features and integrations using LLMs, tool calling, guardrails, evaluation, and MCP
  • Integrate with BigQuery, MySQL, GCP services, and internal APIs
  • Diagnose and resolve application, workflow, database, performance, and production issues
  • Build automated tests and deliver reliable, production-quality software
  • Own projects end to end, from technical proposal and implementation through deployment and production support
  • Participate in code reviews and contribute to sound engineering practices across the team

GREAT TO HAVE

  • MCP server/client development and AI agent or tool-calling architectures
  • Go development in production environments
  • GCP and BigQuery
  • Docker, Kubernetes, or GKE
  • MySQL performance optimization
  • CI/CD pipelines, including GitHub Actions
  • Python development
  • Java 8, Tomcat, JSP, CodeMirror, or Chart.js
  • Incremental modernization of mature applications while maintaining production stability

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 and some of our favorite employee benefits include fully paid health insurance, paid parental leave and unlimited PTO and more.

Base compensation range: $150,000.00 - $190,000.00

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.

#LI-TD1

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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