Full-Time
Senior Software Engineer
JavaScript, React
Posted on 8/27/2025
Magnite
501-1,000 employees
Independent sell-side platform for programmatic advertising
Compensation Overview
$150k - $180k/yr
Los Angeles, CA, USA + 1 more
More locations: New York, NY, USA
Hybrid
Hybrid schedule (M/F remote, T/W/TH in-office)
 Software Engineering (1) |
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- 4+ years of relevant work experience in software development
- Development experience in JavaScript for front-end development with a strong understanding of asynchronous programming
- Experience building RESTful APIs with other programming languages such as Ruby, PHP, or Python
- Proficiency writing unit tests
- A strong understanding of algorithms, data structures, and an ability to recognize the business and technical trade-offs between different solutions
- Experience with development and CI tools like git, a build management system like Jenkins, Docker, and Jira
- Participate in the full-stack design, development, testing, release, and maintenance of a core product offering as it relates to a critical advertising buying and selling platform (Springserve)
- Manage your own project priorities, deadlines, and deliverables, within a distributed team
- Architect and optimize server- and client-side code in React/Typescript and Ruby on Rails
- 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
- Respond to feature requests, bug reports, performance issues, and ad-hoc questions
- Support operation of services in production
- Mentor and guide engineers, providing technical leadership and fostering a culture of engineering excellence
- Collaborate with cross-functional teams to prioritize features, address technical debt, and improve system reliability
- Participate in and lead design and code reviews
- General Ad Technology experience, ideally with header bidding technologies in a production environment
- Experience with MVC patterns and typed languages
- Postgres or other Relational DB experience with SQL and Table design/optimization
- Ruby, especially Rails
- Experience building UIs with JavaScript libraries such as React
- Typescript
- Knowledge of AWS Infrastructure (ECS, S3, CodeBuild)
- Proficiency with Linux
Magnite helps publishers sell ad space through a sell-side platform that automates programmatic ad transactions across digital and Connected TV. Its technology optimizes inventory for higher yields and provides buyers with scalable, brand-safe inventory and fraud protection. It earns revenue by taking a commission on ad spend and offering premium services like Private Marketplaces, Programmatic Guaranteed, and Auction Packages, while remaining independent to avoid conflicts with clients. Its goal is to maximize publishers' ad revenue and provide reliable, global access to quality inventory for advertisers.
Company Size
501-1,000
Company Stage
IPO
Headquarters
Los Angeles, California
Founded
2007
Simplify's Take
What believers are saying
- CTV segment grows 30% in Q1 2026, reaching 80 million U.S. households via partnerships.
- September 2025 Streamr.ai acquisition bolsters AI tools for small business CTV campaigns.
- NRR near 110% from 1,500 premium publishers underscores sticky revenue dynamics.
What critics are saying
- Trade Desk Kokai erodes SSP share through direct publisher auctions within 6-12 months.
- Adam Soroca's April 8, 2026 exit disrupts AI buyer agent and SpringServe roadmaps.
- Roku's in-house SSP excludes Magnite from 80 million households in 18-24 months.
What makes Magnite unique
- Magnite operates world's largest independent sell-side platform post-2020 Rubicon-Telaria merger.
- ClearLine technology enables programmatic access to AMC's linear, FAST, and streaming inventory.
- ML-driven auctions process 100 trillion ad opportunities annually with direct DSP integrations.
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Benefits
Health Insurance
401(k) Retirement Plan
401(k) Company Match
Paid Vacation
Paid Sick Leave
Paid Holidays
Unlimited Paid Time Off
Hybrid Work Options
Equity and Employee Stock Purchase Plan
Family Planning Benefits
Parental Leave
Disability Insurance
Life Insurance
Cell Phone Subsidy
Fitness and Wellness Reimbursement
Mental Health Support
Company News
Magnite's Chief Product Officer Adam Soroca has stepped down, effective 8 April 2026, with an advisory period through 15 May. He will receive severance under his existing Executive Severance and Vesting Acceleration Agreement. The leadership change introduces execution risk around product roadmaps as Magnite navigates the evolving advertising technology market. However, the short advisory period suggests near-term catalysts, including Q1 2026 results and key CTV and publisher relationships, should remain largely unaffected. Magnite's investment case depends on independent sell-side platforms maintaining relevance as advertising budgets shift across CTV, digital video, audio and in-app formats. The company has a $200 million share repurchase authorisation and ongoing partnerships with Genius Sports and NOVA Entertainment. Analysts project revenue concentration from major CTV streamers remains a primary risk alongside infrastructure spending.
Magnite (NASDAQ: MGNI) Chief Product Officer Adam Soroca to step down. Filing Impact Filing Sentiment Rhea-AI filing summary. Magnite, Inc. reported a leadership change in its product organization. The company announced that Chief Product Officer Adam Soroca will cease serving in that role effective April 8, 2026. He will remain with Magnite as an advisor through May 15, 2026 to support transition activities. In connection with his termination of employment, Mr. Soroca will receive severance benefits under his existing Executive Severance and Vesting Acceleration Agreement, which is described in Magnite's 2025 proxy statement. The filing does not indicate any change to Magnite's core operations or strategy beyond this executive transition. 8-K event classification. Item 5.02 - Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Key figures. 8-K event date: April 7, 2026 CPO role end date: April 8, 2026 Advisor period end: May 15, 2026 Key terms. Chief Product Officer, Executive Severance and Vesting Acceleration Agreement, Proxy Statement, Emerging growth company 04/10/2026 - 04:02 PM Faq. What executive change did Magnite (MGNI) disclose in this 8-K filing? Magnite disclosed that Chief Product Officer Adam Soroca will leave his role effective April 8, 2026. He will continue as an advisor through May 15, 2026, helping manage the transition of product leadership responsibilities during this period. When is Magnite (MGNI) Chief Product Officer Adam Soroca's departure effective? Magnite stated that Chief Product Officer Adam Soroca will cease serving in that role effective April 8, 2026. After that date, he will no longer hold the Chief Product Officer title, but will remain with the company in an advisory capacity for several weeks. How long will Adam Soroca remain as an advisor to Magnite (MGNI)? The filing explains that Adam Soroca will continue as an advisor to Magnite through May 15, 2026. This advisory period provides short-term continuity and support for the company's product function following his departure from the Chief Product Officer role. What severance arrangements apply to Adam Soroca's departure from Magnite (MGNI)? Magnite notes that Adam Soroca will receive severance benefits under an existing Executive Severance and Vesting Acceleration Agreement. The agreement's terms are described in Magnite's 2025 proxy statement, which outlines compensation and vesting provisions for certain executive terminations. Does Magnite's 8-K mention why the Chief Product Officer is leaving? The 8-K filing identifies that Adam Soroca will cease serving as Chief Product Officer but does not state a reason for his departure. It focuses on effective dates, his temporary advisory role, and reference to the applicable executive severance agreement. Filing exhibits & attachments. 3 documents
Magnite has partnered with NOVA Entertainment to enable programmatic advertising across the Nova Retail Network, a major in-store audio network in Australia. The collaboration integrates NOVA's digital audio inventory with Magnite's sell-side technology, allowing advertisers to reach shoppers at point of purchase through automated campaign activation. The partnership follows Magnite's February announcement of deploying the Advertising Context Protocol on its SpringServe platform, which enabled what the company believes is the industry's first agent-to-agent campaign using AI-driven buyer and seller agents. The technology aims to streamline manual processes and increase throughput across existing infrastructure. Magnite is continuing to refine the framework through test campaigns in early 2026, positioning its platform as an anchor for interoperability in an increasingly automated programmatic advertising marketplace.
Magnite enables programmatic access to Nova Retail Network. 12/03/2026 Magnite, the independent sell-side advertising company, has announced a partnership with NOVA Entertainment to power programmatic across the Nova Retail Network, one of Australia's biggest in-store audio networks. The Nova Retail Network reaches millions of shoppers across retail locations nationwide, delivering curated audio content and advertising directly to consumers at the point of purchase. According to the two companies, the collaboration allows advertisers to access the Nova Retail Network's premium digital audio inventory programmatically through Magnite, helping streamline campaign activation and creating new opportunities for brands to reach consumers in high-impact retail environments. "We're excited to be working with Magnite to unlock additional value for our audio offering and bring this innovative opportunity to market," said Nicole Bence, Chief Commercial Officer at NOVA Entertainment. "The Nova Retail Network represents a highly engaging environment where brands can connect with shoppers in real time, and we look forward to being able to deliver greater flexibility, efficiency and scale for our advertising partners." "Programmatic is rapidly transforming the audio landscape, and the growth of in-store audio environments represents an exciting new frontier for brands," said Yael Milbank, Managing Director, Australia and New Zealand at Magnite. "We're thrilled to be working with NOVA Entertainment to bring programmatic capabilities to the Nova Retail Network and help advertisers reach audiences in the moments that matter most - right at the point of purchase." Magnite says the partnership reflects growing demand for automated buying and programmatic activation across audio channels, particularly as 72% of Australian audio buyers purchased audio programmatically in 2025, according to IAB Australia's latest Digital Audio State of the Nation Report.
Granahan Investment Management reduced its Magnite stake by 757,249 shares in the fourth quarter of 2025, an estimated $12.57 million transaction according to a Securities and Exchange Commission filing dated 17 February 2026. Following the sale, Magnite represents 2.17% of Granahan's $2.34 billion in reportable US equity assets under management. The ad tech company reported $714 million in revenue for the year, up 7% year-on-year, with adjusted EBITDA climbing nearly 20% to $232.1 million. Magnite's connected TV segment grew 20%, representing roughly 45% of total contribution ex traffic acquisition costs. The company operates an independent sell-side advertising platform, helping publishers monetise digital advertising inventory across connected TV, websites and mobile properties. Magnite shares were up approximately 6% over the past year.