Staff Backend Engineer, Unity Ads

The opportunityUnity is looking for a Staff Backend Engineer to join our Unity Ads team, where we build the real-time systems that power Unity’s global advertising platform. This is a high-scale, low-latency environment — processing billions of requests daily to deliver fast, relevant ads to players around the world. Our backend infrastructure is designed for reliability and scalability, ensuring seamless ad delivery and optimal performance even under heavy traffic.As part of the team, you will work on distributed systems that handle real-time ad requests, impression tracking, and user data analytics with strict requirements for uptime and security. You'll play a critical role in optimizing performance, maintaining service availability, and supporting the development of new monetization features for game developers worldwide. Security, data privacy, and a positive user experience are central to everything we build.You’ll help modernize the legacy tech stack and the core services behind ad delivery, bidding, reporting, and analytics. This is a great opportunity for an engineer who’s excited to work on performance-critical systems, collaborate across teams, and grow in a fast-paced environment, all at a turning point in the company.What you'll be doingDesign, build, and modernise backend services and APIs that support ad deliveryWork on scalable, high-availability systems used across Unity’s ads ecosystemCollaborate with engineers, product managers, and data teams to deliver new featuresImprove performance, observability, and cost-efficiency of current backend systems, modernising the legacy stackContribute to architectural decisions and technical direction of the platformWhat we're looking forExperience building backend services at scaleProficiency in Golang, and relational databases (e.g., MySQL)Familiarity with cloud infrastructure and observability tools (Kubernetes, Ray, etc.)Understanding of API design, distributed systems, and system reliabilityStrong collaboration and communication skills in a remote-first team environmentYou might also haveExperience in ad tech, programmatic advertising, or real-time bidding systemsBackground with infrastructure-as-code (e.g., Terraform)Familiarity with networking, caching, or real-time data pipelinesAdditional informationRelocation support is not available for this position.Work visa/immigration sponsorship is not available for this positionLife at UnityWe offer a wide range of benefits designed to support employees' well-being and work-life balance. You can read more about them on our career page.Unity [NYSE: U] is the leading platform to create and grow games and interactive experiences.  Creators, ranging from game developers to artists, architects, automotive designers, infrastructure experts, filmmakers, and more, use Unity to bring their imaginations to life across multiple platforms, from mobile, PC, and console, to spatial computing.  As of the third quarter of 2024, more than 70% of the top 1,000 mobile games were made with Unity, and in 2024, Made with Unity applications had an average of 3.7 billion downloads per month. For more information, please visit www.unity.com.  Unity is a proud equal opportunity employer. We are committed to fostering an inclusive, innovative environment and celebrate our employees across age, race, color, ancestry, national origin, religion, disability, sex, gender identity or expression, sexual orientation, or any other protected status in accordance with applicable law. Our differences are strengths that enable us to support the growing and evolving needs of our customers, partners, and collaborators.If you have a disability that means there are preparations or accommodations we can make to help ensure you have a comfortable and positive interview experience, please fill out this form to let us know.Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.This position requires the incumbent to have a sufficient knowledge of English to have professional verbal and written exchanges in this language since the performance of the duties related to this position requires frequent and regular communication with colleagues and partners located worldwide and whose common language is English.Headhunters and recruitment agencies may not submit resumes/CVs through this Web site or directly to managers. Unity does not accept unsolicited headhunter and agency resumes. Unity will not pay fees to any third-party agency or company that does not have a signed agreement with Unity.Your privacy is important to us. Please take a moment to review our Prospect and Applicant Privacy Policies. Should you have any concerns about your privacy, please contact us at DPO@unity.com.#SEN #LI-JG1