Senior Engineer of Backend APIs, Magnite

$125-155k

+ Annual variable bonus, equity and Employee Stock Purchase Plan

AWS

Docker

Kubernetes

GCP

Java

Postgres

Azure

Branch

Git

Senior and Expert level

Los Angeles

New York

M/F remote, T/W/TH in-office

Sell-side omnichannel advertisement platform

Be an early applicant

Sell-side omnichannel advertisement platform

501-1000 employees

B2BMarketingDigital MediaSaaSAdvertising

Be an early applicant

$125-155k

+ Annual variable bonus, equity and Employee Stock Purchase Plan

AWS

Docker

Kubernetes

GCP

Java

Postgres

Azure

Branch

Git

Senior and Expert level

Los Angeles

New York

M/F remote, T/W/TH in-office

501-1000 employees

B2BMarketingDigital MediaSaaSAdvertising

Company mission

Magnite's mission is to help the world’s leading advertisement agencies and brands reach millions of consumers efficiently and safely through its omnichannel sell-side advertisement platform.

Job

Company

Role

Who you are

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
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

What the job involves

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
You'll 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

Our take

Due to the rise in mobile and smart devices in recent years, the way in which advertisement publishers must format their ads is changing. A key example of this is TV, advertisements that present immediate calls to action within a Connected TV user interface, but publishing ads in such a format is currently inaccessible to most publishers.

Magnite provides a sell-side omnichannel advertisement platform for publishers, focused on facilitating the selling of advertising on all formats including CTV, mobile, desktop, and audio. In addition to facilitating the buying and selling of omnichannel ads, the company also provides a real-time ad performance dashboard, data protection and compliance tools, and insights into buying and selling patterns.

Whilst other omnichannel advertisement platforms present significant competition to the company, Magnite stands out by providing an end-to-end marketplace for the buying, selling, management, and analysis of ads. Furthermore, by focussing its efforts on cutting-edge formats such as CTV, the company shows great potential to futureproof itself within the advertisement industry.

Kirsty

Company Specialist at Welcome to the Jungle

Insights

5% employee growth in 12 months

Glassdoor (3.9)

Company

Company benefits

Equity and Employee Stock Purchase Plan
Pension and Retirement Savings Plan in Several Countries
Comprehensive Healthcare Benefits for You and Your Family
Generous Time Off, Holiday Breaks and Summer Fridays
Family-Focused Leave Benefits
Cell Phone Subsidy
Performance Management, and Investment in Diversity Initiatives
Bonusly Peer-to-Peer Recognition Program, Turning Recognition into Tangible Perks and Magnite Swag
Community Service Events
Wellness Coach—Meditate and Recharge with an Unlimited User Account for You and a Plus One

Company HQ

Westchester, Los Angeles, CA

Leadership

Michael Barrett

(CEO)

Experience as CEO of Rubicon Project from 2017 to 2020. President and Founder of Ichabod Farm Ventures LLC since 2012.

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