Job Specifications
Senior Engineer — Backend APIs
Los Angeles, CA
New York City, NY
Broomfield, CO
Hybrid Schedule (M/F remote, T/W/TH in-office)
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 group powers our flagship analytics products — Performance Analytics (PA), Prebid Analytics (PBA), and the SpringServe platform's reporting — and is building the next‑generation Unified Reporting API. We’re adding an experienced backend 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
Design, build, and evolve microservice‑based API products that power reporting and analytics applications.
Collaborate daily with Product, UI, and Data engineers to take features end‑to‑end — from requirements and design to rollout, telemetry, and iteration.
Design and build APIs that are intuitive and easy to consume: clear contracts (OpenAPI/gRPC), well-documented, versioning strategies, pagination, filtering, batching, and strong SLAs/SLOs.
Shape data access patterns: schemas, query plans, caching, and performance tuning in read/writes for big data.
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
5+ years of software engineering experience, including 3+ years with Java.
Deep understanding of microservice fundamentals (service boundaries, resiliency, observability, CI/CD) and API design at scale.
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.
Hands-on experience with Postgres (or other RDBMS): modeling, migrations, indexing, and query optimization.
A track record of shipping well‑tested, production‑grade APIs used by UI applications and direct API consumers.
Proficiency with Git/GitHub and modern team practices (reviews, trunk/branch strategies, code ownership).
Clear, empathetic communication and a collaborative mindset.
Our Current Tech Stack
Exposure to cloud providers (AWS, GCP, or Azure) and container orchestration (Docker/Kubernetes).
Familiarity with functional programming concepts.
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.
How We Work
Hybrid collaboration centered on our Los Angeles office with close partnership to US‑based Product, UI, and Data teams.
Pragmatic process: design docs, small PRs, automation over toil, and continuous learning.
A supportive culture that values mentorship, psychological safety, and outcomes over ego.
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
Fitness and Wellness Reimbursement
Company Culture
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
About Us
The world's leading agencies and brands trust our platform to access brand-safe, high-quality ad