New York, New York

Xandr's Invest DSP operates in one of the largest Online Advertising Marketplaces in the world. Every second we process up to 5 million bid requests, which result in over a million transactions, represented in over fifty million rows of hundreds of logs and messages, which we combine, analyze and aggregate on behalf of hundreds of thousands of buyer campaigns into a host of reporting views and real-time signals.

Our Transactions team is seeking an experienced, creative engineer to help us reach our goal of managing this process end-to-end with 100% reliability and 0 discrepancies, while integrating new technologies and facilitating the development of paradigm-busting product initiatives. The ideal candidate has a background in a variety of languages, design styles, and Big Data processing tools, as our stack comprises everything from a performance bidder written in C, legacy PhP APIs, and Apache MapReduce ETL jobs, to modern containerized streaming applications feeding realtime views in MemSQL and PowerBI.

They should also be experienced in dealing with complex problems that span multiple systems, able quickly to explore new code bases, compare datasets, discover root causes and propose solutions that balance the competing needs and priorities of multiple stakeholders. Love of investigation and attention to detail are key.

About the job

  • Define and govern the data model as it is expressed cross-platform
  • Integrate new tools and methods for processing and storage
  • Modernize legacy applications and build self-serve solutions for team contributors
  • Lead and consult on product initiatives that leverage the solutions you pioneer


  • 5+ years of software development experience for production systems
  • 2+ years of system design and development experience
  • Proficiency in multiple languages, especially Java and SQL (also Python, C, PhP, Scala, and Go are plusses)
  • Experience with kubernetes, docker, and helm, as well as public cloud services (AWS, AKS)
  • Knowlege of a variety of data processing tools, serialization formats, and storage solutions (MySQL, Kafka, Protobuf, HDFS, YARN, Hive, Presto, HBase, Apache Spark and MapReduce, Cassandra, Reddis, Vertica, MemSQL, PowerBI, Debezium)

New York, New York

AT&T is bringing it all together for our customers, from revolutionary smartphones to next-generation TV services and sophisticated solutions for multi-national businesses.

For more than a century, we have consistently provided innovative, reliable, high-quality products and services and excellent customer care. Today, our mission is to connect people with their world, everywhere they live and work, and do it better than anyone else. We're fulfilling this vision by creating new solutions for consumers and businesses and by driving innovation in the communications and entertainment industry.

We're recognized as one of the leading worldwide providers of IP-based communications services to businesses. We also have the nation's most reliable 4G LTE network.* We also have the largest international coverage of any U.S. wireless carrier, offering the most phones that work in the most countries. AT&T operates the nation's largest Wi-Fi network** including more than 32,000 AT&T Wi-Fi Hot Spots at popular restaurants, hotels, bookstores and retailers, and provides access to nearly 1 million hotspots globally through roaming agreements.

AT&T U-verse is TV inspired by you. It's TV the way you want it, with tons of cool features and capabilities. AT&T is the only national TV service provider to offer a 100-percent IP-based television service. It's part of our "three-screen" integration strategy to deliver services across the three screens people rely on most - the mobile device, the PC and the TV.

As we continue to break new ground and deliver new solutions, we're focused on delivering the high-quality customer service that is our heritage.

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