Senior Engineer; Springserve Ad Server

Senior Software Engineer

Broomfield, CO

Buffalo, NY

New York City, NY

Los Angeles, CA

Hybrid Schedule (M/F remote, T/W/TH in‑office)

We are looking for a Senior Software Engineer to join our Spring Serve Ad Server team, where you will work on a globally distributed ad serving system that handles hundreds of billions of requests a day. You have the opportunity to take on project initiatives to improve the delivery of our systems, tackle hard technical challenges, and contribute to a small team of passionate individuals.

Magnite (NASDAQ: MGNI) is the world’s largest independent sell‑side advertising platform. Publishers use our technology to monetize their content across all screens and formats, including CTV, online video, display, and audio. Our tech fuels billions of transactions per day! At Magnite, we cultivate an environment of continuous growth and collaboration. Our work impacts what millions of people read, watch, and buy, and we’re looking for people to help us tackle that responsibility with creativity and focus.

• Participate in the back‑end design, development, testing, release, and maintenance of critical ad‑serving applications
• Manage individual project priorities, deadlines, and deliverables with your technical expertise
• Be a creative problem‑solver able to design and implement reliable and maintainable solutions to challenging problems
• Translate business requirements into technical designs and project plans
• Write production‑ready code and unit tests that meet both system and business requirements
• Respond to feature requests, bug reports, performance issues, and ad‑hoc questions
• Work collaboratively with multiple teams to deliver quality software
• Leverage AI‑assisted tools in your development process
• Support the operation of services in testing environments and production
• Perform design and code reviews

• BA/BS degree in Computer Science or related technical field, or equivalent practical experience.
• 5+ years of relevant work experience in software development
• Primary development experience in Java for high‑throughput, low‑latency back‑end web services. Experience with asynchronous programming patterns, high levels of concurrency, and with frameworks such as Vert.x and Dropwizard is highly desirable.
• A strong understanding of algorithms, data structures, and an ability to recognize the business and technical trade‑offs between different solutions
• Familiarity with AI‑assisted development using tools such Git Hub Copilot, Cursor or Claude
• Experience with development and CI tools like Maven, git, containerization with Docker, a build management system like Codebuild or Jenkins, and Jira
• Experience writing unit tests
• Postgres or other relational DB experience with SQL and table design
• Ability to context switch and manage competing priorities

• General Ad Technology experience, ideally with header bidding technologies in a production environment

• Comprehensive Healthcare Coverage from Day One
• Generous Time Off
• Holiday Breaks and Quarterly Wellness Days
• Equity and Employee Stock Purchase Plan
• Family‑Focused Benefits and Parental Leave
• 401k Retirement Savings Plan with Employer Match
• Disability and Life Insurance
• Cell Phone Subsidy
• Fitness and Wellness Reimbursement

We believe collaboration is essential to success. Magnite’s hybrid schedule includes two days worked remotely (Monday and Friday) and three days on‑site (Tuesday, Wednesday and Thursday). Our offices provide catered lunches, beverages, snacks, training and development, and office events to support your work week. We also understand you have appointments, families, hobbies, and other commitments. Magnite strives to maintain a healthy work/life integration for all employees so you can bring your best every day – both at work and at home.

• Community Service and Volunteer Events
• Company‑Matched Charitable Contributions
• Wellness Coach and Mental Health Support
• Career Development Initiatives and a Career Growth Framework
• Culture and Inclusion Programs
• Bonusly Peer‑to‑Peer Recognition Program

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