Senior Software Engineer, Controller

  • Quantcast
  • London, UK
  • 25/08/2021
Full time Data Science Data Engineering Machine Learning Data Analytics Big Data Data Management Statistics Software Engineering jobs

Job Description

At Quantcast, we use technology to help brands and publishers understand, reach and influence the constantly-changing behaviors of consumers. The Real-time Bidding Platform owns and operates the large scale distributed stack which allocates millions of dollars of advertising budget to billions of bid opportunities streaming into the system. If you’re interested in working on these critical, fast, large scale distributed systems then we’d like to meet.As an engineer on the controller team you will work side-by-side with Modeling & Product to build & maintain intelligent control systems that power our real-time bidding engine. You’ll design and code mission-critical systems that enable accuracy and efficiency in bidding decisions a few million times per second, with an emphasis on reliability and reproducibility. You enjoy working with technical teams on big problems, and you’re a highly motivated quick learner.


    • Build and maintain real-time pipelines and systems that inform bidding decisions within very small latency constraints.
    • Build and maintain mission-critical monitoring and measurement systems
    • Build and maintain datasets and tools to help business customers analyze and/or debug campaign performance
    • Improve development, testing, monitoring and operational tools and processes
    • Support the team by providing regular feedback on code and design
    • Participate in team-wide on-call rotations, mentor junior engineers


    • BS or MS in Computer Science or a related field
    • 4+ years experience developing and working on distributed software systems
    • Passionate about engineering excellence, good practices and continuous improvement thereof
    • Experience delivering improvements in scale, runtime, cost, features or reliability under little supervision
    • Excellent skills in distributed system and software design, concurrent algorithms, data structures and software engineering
    • Hands-on experience creating high performance multi-threaded programs in Java, Scala, C++ or similar object oriented programming language

Bonus Points:

    • Experience in high volume data processing in the online space
    • Experience with Scala and Python mathematical libraries
    • Experience in Machine Learning

Quantcast is an advertising technology company and the creator of an innovative intelligent audience platform that empowers brands, agencies and publishers to know and grow their audiences online. Our solutions are leveling the playing field for our customers when it comes to effectively reaching audiences online and helping them power a thriving free and open internet for everyone. Founded in 2006 and headquartered in San Francisco, Quantcast has employees in 20 offices across 10 countries.
We are committed to building an inclusive and diverse environment where everyone can be their authentic self. We work to ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.
Recognizing the importance of flexible work environments, Quantcast is implementing a hybrid work model which will take effect October 18, 2021. The model gives employees the opportunity to work from home two days a week and work in the office for team collaboration three days a week. Employees can also work remotely for two weeks each year or apply for our fully-remote work program. Additionally, all U.S. employees working from a Quantcast office or who meet clients are required to be vaccinated against COVID-19. Outside of the U.S., vaccination guidelines are dependent on location.