Engineer II, Backend APIs

Engineer II, Backend APIs Reporting & Insights team Los Angeles, CA Broomfield, CO Hybrid Schedule (M/F remote, T/W/TH in-office) West Coast - Remote 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. 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 / streaming, online video, display, and audio. Our tech fuels billions of transactions per day! About this team: Magnite’s Reporting & Insights team powers our flagship analytics product for SpringServe platform and is building the next‑generation Unified Reporting API. We’re adding an engineer to accelerate a high‑impact roadmap, elevate API developer experience, and partner closely with our UI and Data teams to ship features that our publishers and DSPs rely on to understand and optimize campaign performance. In this role you will: Participate in the design, development, testing, release of API’s that power reporting and analytics applications. Collaborate daily with Product, UI, and Data engineers to take features from requirements and delivery. Design and build APIs that are intuitive and easy to consume: clear contracts (OpenAPI), well-documented, versioning strategies, pagination, filtering, batching, and strong SLAs/SLOs. Champion code quality: well‑tested, observable, maintainable code; thoughtful reviews; design docs; and pragmatic documentation. Own services in production: dashboards, alerting, capacity and load testing, cost‑aware design, and reliability improvements. Leverage AI-assisted tools in your development process We’re looking for someone with: 3+ years of software engineering experience. Primary development experience in modern (latest JVM version) Java for high-throughput, low-latency back-end web services. Hands-on experience with Postgres (or other RDBMS): modeling, migrations, indexing, and query optimization. Proficiency with Git/GitHub and modern team practices (reviews, trunk/branch strategies, code ownership). Clear, empathetic communication and a collaborative mindset. Nice to Have: Exposure to cloud providers (AWS, GCP, or Azure) and container orchestration (Docker/Kubernetes). Experience with asynchronous programming patterns, high levels of concurrency, and with frameworks such as Vert.x and Dropwizard is highly desirable. Experience with event‑driven or streaming architectures. Understanding of authN/Z patterns (OAuth2/JWT), rate limiting, and API security. Observability tools and practices (metrics, tracing, logs) and load/perf testing. Knowledge of Real-Time Bidding (RTB), SSPs, DSPs, and ad delivery systems is a strong plus. In CA, the base salary range for this role is $125,000 – $135,000. In CO, the base salary range for this role is $115,000 – $125,000. Actual compensation will be determined based on location, experience, skills, and internal equity. This role is also eligible for: Annual performance-based bonus Equity (NASDAQ: MGNI) Comprehensive benefits package During the interview process, candidates will receive more specific information about the salary range applicable to their experience and location. Perks and Benefits: 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 Monthly Fitness and Reimbursement Career Growth: We support internal mobility, skill development, and leadership pathways through structured career frameworks and learning programs. Company Culture: Magnite’s culture is rooted in collaboration and connection, recognizing that both are essential to success. Our hybrid schedule includes two remote workdays (Monday and Friday) and three in-office days (Tuesday through Thursday), where employees can take advantage of catered lunches, beverages, snacks, training opportunities, and engaging office events that enhance the work experience. In addition, we support our team through meaningful benefits and programs, including community service and volunteer opportunities, company-matched charitable contributions, access to mental health resources, structured career development initiatives and growth frameworks, culture and inclusion programs, and our Bonusly peer-to-peer recognition platform. About Us The world's leading agencies and brands trust our platform to access brand-safe, high-quality ad inventory and execute billions of advertising transactions each month. Anchored in bustling New York City, sunny Los Angeles, mile-high Denver, historic London, and down under in Sydney, Magnite has offices across North America, EMEA, LATAM, and APAC. For Los Angeles-based applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. The material job duties of this specific job position for which Magnite reasonably believes that a criminal history may have a direct, adverse, and negative relationship include: Having access to the Company’s Confidential Information or trade secrets including data related to customers, clients, vendors, business partners, or suppliers Work with cross teams to access datasets, databases, formulas, algorithms, tools, products, prototypes, systems applications, and technologies in any stage of development Magnite is an Equal Opportunity Employer and does not discriminate against applicants due to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, sexual orientation or any other federal, state or local protected class. Our Commitment: We aim to incorporate a wide range of voices into our Magnite culture, cultivating an environment where employees feel welcomed, cared for, and encouraged to freely share ideas. We are committed to employee growth, collaboration, inclusion, and innovation. We invest in Magnite’s local communities. We seek talent from all backgrounds to champion corporate values of seeing the big picture and being catalysts of change. Want to learn more about us? Check out our blog for Magnite announcements and Ad Tech industry news! Recruiting Agency Notice Magnite does not accept agency resumes and is not responsible for any fees related to unsolicited resumes. Magnite was born in 2020 when the programmatic ad pioneers at Rubicon Project teamed up with the CTV experts at Telaria. To accelerate our CTV ambitions, we acquired CTV leader SpotX and ad management platform SpringServe in 2021. Now, Magnite is the industry’s largest scaled, independent CTV/video ad platform. Though CTV and video are now as important to Magnite as ever, we remain committed to our roots as an omnichannel SSP. Thousands of publishers around the globe rely on our technology to sell advertising on their terms and across every channel and format—including CTV, desktop, mobile, and audio. Likewise, we help the world’s leading agencies and brands reach millions of consumers efficiently, safely, and while respecting their privacy. The Magnite team is made up of hundreds of people across North America, EMEA, LATAM, and APAC, and our stock is traded on NASDAQ as MGNI.