Senior Software Engineer, Machine Learning

Appnexus Inc. New York, NY
Senior SoftwareEngineer,Machine LearningAppNexus’ mission is to build a better Internet. We develop a technology platform that powers the real-time sale and purchaseof digital advertising. Our platform is engineered to provide one of the fastest, most reliable, and massively scaled advertising systems in the industry. As a transparent and independent partner for some of the largest publishers and advertisers,AppNexushelps ensure that the Internet stays open and free.AppNexusis seeking a Machine Learning Engineer to join the Creative team.Creatives (or ads) are the transactional unit of online advertising: they are what the user sees. Over the past 3 years, we haveseen50% year-over-year growth in the number of creativesadded, and we currently manage over 90MM creatives. We are working on solutions to classify creatives with 99.9% accuracy usingpre-trainedimage feature extraction models and deep learning.Future projects will tackle problems inNLP,text classification, optimization, and anomaly detection.The most exciting part about working atAppNexusis the enormous potential for personal and professional growth. You will be joining a small team that is only starting to scratch the surface on how we can leverage machine learning to enhance our offering.About the job:Develop infrastructure and tools toproductionizenewalgorithmsin a repeatable mannerEnhancecurrentcreative classifier to increase coverage while maintaining accuracyCollaborate with Data Scientiststo prototype newalgorithmsand designexperimentsfor evaluationIdentify opportunities to apply machinelearningmethodologiesto solve new problemsParticipate in design discussions about new features and approaches to implementing new servicesAbout your skills:BA/BS degreeand 5+ yearsof experience OR MS/Ph.Ddegree and 3+ years of experience in software engineering (Degree inMachine Learningor related field preferred)Experience building machine learning systems at scaleExperience with Pythonandscikit-learnpreferredExperience with Machine Learning APIs and libraries;KerasandTensorFlowpreferredKnowledge of databases preferredMore about you:You care about finding the right solutionsto problems. You can recognize when machine learning should be used and when it shouldn’t be.You are passionate about a culture of learning and teaching. You love challengingyourself to constantly improveand 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 believe in not only serving customers, but also empowering them by providing knowledge and tools.Hiring Manager:Mike CenRecruiter:Elcio Salgado