StockX

Senior Machine Learning Engineer - Search & Recommendations

Sept. 15, 2022

Remote, USA

Help empower our global customers to connect to culture through their passions.Technology @ StockX: Our Technology Team is on a mission to build the next-generation e-commerce platform for the next generation customer. We build world-class, innovative experiences and products that give our users access to the world’s most coveted products and unlock economic opportunity by turning reselling into a business for anyone. Our team uses cutting edge technologies that handle massive scale globally. We’re an internet-native, cloud-native company from day 1 - you won’t find legacy technology here. If you’re a curious leader who loves solving problems, wearing multiple hats, and learning new things, join us! Job Description In the Search & Recommendation team, Applied Scientists and Software Engineers specialize in Machine Learning. We work together to productionalize custom machine-learning models that can drive product vision and customer impact at scale. We are looking for MLE who are product driven, and are passionate about making ML innovations in areas such as; Ranking, Optimization, Natural Language Processing, Information Retrieval, Graph Learning, Reinforcement Learning to help improve the StockX buyer/seller experience! About the Role: Example Projects: Develop online/offline embeddings to collect salient signals of our customers, product, and user interactions. Extract real-time signals and multi-modality data (i.e, content and image) from our 5M+ product catalog images and 1M+ listings. Understand semantic content, aesthetic style, materials for retrieval, ranking and optimization. Build real-time in-session personalization recommendation system. Implement and compare supervised learning models (i.e, LR, GBDT, and DNNs) or ensembles of models, to improve metrics, often with multiple contending objectives (i.e, relevance, degree of personalization, average value of orders, repeated frequencies/purchases). Develop models with custom architecture or objective functions that target StockX-specific problems, such as recommendation system, personalized search, revenue optimization, seller fairness, seasonality, etc. Develop brand-new learning frameworks for query suggestions to understand buyer experience. What You'll Do: Apply the latest advances in deep learning and machine learning to improve buyer and seller experiences on StockX. Prototype, optimize, and productionize large-scale ML models that help deliver key results in search experience. Conduct A/B experiments to validate ML models and pipelines. Work closely with product managers, ML scientists/engineers, full-stack engineers, and designers on product teams to deliver content to tens of millions of users. About You: Experience with object-oriented or functional software development Experience working with AWS or other cloud providers Experience with big data platforms like Spark Experience with machine learning libraries such as TensorFlow, PyTorch, or MXNet You have dealt with data exploration, analysis, and feature engineering You have relentlessly high standards for the products you deliver Work effectively in an agile development process Preferred requirements: You have a postgraduate degree in Computer Science or related engineering fields plus 3+ machine learning experience, or 5+ years of practical machine learning experience. Experience with Kubernetes, Docker, SeldonCore for productionalizing models You have experience in building machine learning systems at scale. You have experience in using AWS Cloud Platform. You have experience in building production search, recommendations, advertising, or general e-commerce systems. About Us StockX is the premier current culture platform for buying and selling authentic, new, sought-after products. Our powerful marketplace connects buyers and sellers for sneakers, apparel, accessories, electronics, collectibles and trading cards around the world. We provide millions of global customers with unprecedented access and market visibility powered by real-time data, allowing them to transact based on true market value. Launched in 2016 in Detroit, Michigan, StockX now employs more than 1,500 people in offices and authentication centers in 11 countries.     We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. This job description is intended to convey information essential to understanding the scope of the job and the general nature and level of work performed by job holders within this job. However, this job description is not intended to be an exhaustive list of qualifications, skills, efforts, duties, responsibilities or working conditions associated with the position. StockX reserves the right to amend this job description at any time.

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