Engineer II, Backend APIs

Engineer II

Join the Reporting & Insights team at Magnite, based in Los Angeles, CA or Broomfield, CO, with a hybrid schedule. Magnite is the world's largest independent sell-side advertising platform, powering billions of transactions per day. This team develops the next-generation Unified Reporting API and is looking for an engineer to accelerate its roadmap and enhance API developer experience.

In this role, you will:

• Participate in the design, development, testing, and release of APIs for reporting and analytics applications.
• Collaborate with Product, UI, and Data engineers to deliver features from requirements to delivery.
• Design and build intuitive APIs with clear contracts, well-documented, versioning strategies, pagination, filtering, batching, and strong SLAs/SLOs.
• Champion code quality through well-tested, observable, maintainable code, thoughtful reviews, design docs, and pragmatic documentation.
• Own services in production, including 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 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 frameworks such as Vert.x and Dropwizard.
• 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.

In CA, the base salary range for this role is $125,000 – $135,000. In CO, the base salary range is $115,000 – $125,000. Actual compensation will be determined based on location, experience, skills, and internal equity. This role is also eligible for an annual performance-based bonus, equity, and a comprehensive benefits package.

Perks and benefits include comprehensive healthcare coverage, generous time off, holiday breaks, quarterly wellness days, equity and employee stock purchase plan, family-focused benefits, parental leave, 401k retirement savings plan with employer match, disability and life insurance, cell phone subsidy, monthly fitness reimbursement, career growth opportunities, and a supportive company culture.