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Senior Software Development Engineer in Test (Senior SDET) - Data Platform Team

New York, New York



At Xandr, our data is our life line - we can only be as good as our data, and great data is critical for business success. Our data pipeline processes tens of billions of log records a day (more than 150TB of data) generated by our real-time bidding engines and ad serving platform. This data is used to generate aggregated analytics reports, pace spend accurately, and drive optimization engines

Our Engineering Team builds technology that identifies and analyzes relevant data to match buyers and sellers such that they each achieve their business initiatives. To do this, engineers partner with our Data Science team to implement, test and deploy probability based heuristics and intuitive, high-performance, real-time solutions for our diverse client base. This is an energizing community of engineers that is committed to building dependable products – the software and systems being built drive our real-time bidding business with a multitude of other core initiatives for Xandr.

About the job:

Because Xandr has a very fast-paced software development lifecycle, we’re on the hunt for a SSDET to play a critical role in driving and automating the quality of Xandr features, functions, products and platforms. The SSDET will be responsible for driving all automated test and quality activities within a strategic software development team. You will strive to detect and fix every bug as close to generation of that bug as possible by encouraging team members to test their code at all levels. You will develop test tools to make testing as efficient as possible. Beyond the code, you will partner with Product and Support to deeply understand how our customer use our products and set up the checks and balances that protect our customers from seeing bugs

You will:

  • Collaborate with Product and Engineering to develop a comprehensive Test Plan that validates product functionality

  • Develop automated tests using Gherkin and Selenium following defined best practices

  • Develop and execute tests at all levels of the testing pyramid (unit tests, integration tests, performance tests, end to end tests, security tests. etc.)

  • Triage and resolve automated test failures with product engineers directly

  • Build and maintain automated testing, test environments (Kubernetes) and test data

  • Drive adoption of CI (continuous integration) and CD (continuous deployment

  • Be a critical participant in the defect management process

  • Evangelize the importance of testing, especially unit testing, within Xandr

About the job:
  • Own core components of data ingestion and integration processing that intakes ~40 billon events per hour with data volume in excess of 6TB per hour
  • Design and implement new features and enhancements to our data platform to advance component architecture towards strategic data governance/management objectives
  • Collaborate with high frequency/low latency design experts to perform in-depth analysis and optimization of data pipeline components; ensure smooth execution within strict time and resource limitations
  • Work closely with product stakeholders and users to understand data and reporting requirements
  • Prioritize bug fixes to ensure critical up-time and reliability of systems
  • Serve as a mentor and guide for other team members


About your skills and experience:

  • BA/BS/MS degree and 5-7+ years of experience (Degree in Computer Science or related field preferred)
  • Progressive experience in software engineering and design, writing performant code, optimizing performance, and test automation
  • Experience with Big Data and distributed systems using technologies such as Hadoop, Hbase, Spark, Python, Java and Scala
  • Advanced experience designing petabyte-scale distributed frameworks and architecture
  • Demonstrated track record of working with large scale data deployments and/or high frequency/low latency projects
  • Familiar with Enterprise Data Management and Governance practices; Data Architecture methodologies are a plus
  • Solid cross-functional collaboration skills, with experience in product, people and stakeholder management

More about you:

  • You are passionate about a culture of learning and teaching. You love challenging yourself to constantly improve, and sharing your knowledge to empower others
  • You like to take risks when looking for novel solutions to complex problems. If faced with roadblocks, you continue to reach higher to make greatness happen
  • You care about solving big, systemic problems. You look beyond the surface to understand root causes so that you can build long-term solutions for the whole ecosystem
  • You believe in not only serving customers, but also empowering them by providing knowledge and tools

Xandr is proud to offer equal opportunity in all aspects of employment. We strive to foster a diverse, inclusive and engaging work environment. We welcome applications from all candidates and look forward to receiving yours!

Job ID 1961190 Date posted 11/19/2019

Big Data Intern


Good experience overall. Colleagues were very helpful. Atmosphere was chilled out and there was no rush to complete the project. Was given ample amount of time to understand the project and contribute.


People are laid back and don't take initiative to do something new or optimize existing stuff. It's not primarily engineering company so if you know how to talk, you will go far longer in career.

Current Employee - Principal Business Manager
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