Stellenbeschreibung:

About Joom

Joom is a platform for shopping from all over the world. Joom helps consumers to make shopping easy and entertaining and provides access to interesting and unique goods from around the world.



Joom is one of the key businesses of Joom Group, an international group of tech-centric group of e-commerce companies founded in 2016 in Latvia. Joom also includes other businesses: JoomPro, the first end-to-end cross-border B2B marketplace, with successful operations in Brazil and plans to expand to other markets; JoomPulse, a data platform that provides analytics and recommendations for marketplace sellers; and Onfy, a pharmaceutical marketplace in Germany. Joom Group has offices in Latvia, China, Germany, and Brazil, with its headquarters in Lisbon, Portugal. We work as one international team, sharing knowledge and collaborating across countries, businesses and products.



We are currently looking for Senior/Lead ML developers to join:
• Market Intelligence team: working with product content and assortment, comparing products, improving product description translations, and identifying promising products and market segments.


• Marketing Automation team: this team is responsible for automating ad buying and optimizing its performance. We provide the infrastructure and tools for efficient marketing.



Tech stack:
Go, Python, Scala, Spark, modern LLMs, PyTorch, Docker, Kubernetes, Airflow, MongoDB, Cassandra, Kafka, Jenkins.



The role involves not only data analysis, hypothesis creation, modeling, and experimentation, but also writing production code capable of handling high loads.



Requirements
• Strong algorithmic skills: knowledge of fundamental algorithms and data structures, as well as their implementation in standard libraries


• Proficiency in any programming language: experience in developing and debugging distributed, high-load applications, and writing testable code


• Industry experience in Machine Learning: familiarity with key modeling and training approaches (linear models, GBDT, DNN, etc.), knowledge of statistics, and end-to-end ML development experience, including raw data analysis, hypothesis formulation, model creation, experimentation, and deploying results into production



Preferred
• Experience in developing recommendation or search systems


• Experience training neural network models


• Experience working with various data sources: Spark, Cassandra, Mongo, Kafka


• Knowledge of Go



We offer
• Relocation to Lisbon, Portugal: full assistance for a smooth relocation for the employees and their family


• Compensation package: base salary (starting from 80,000 euros gross per year) and performance-based bonuses


• Office-first format: flexible hours with a possibility to work remotely 52 days per year


• Care & Wellbeing: health insurance (including dental care) for employees and their children, daily meal allowance, and 100% paid sick leave


• Team & Growth: collaboration with colleagues across Portugal, Brazil, Latvia and China, with opportunities for promotions, professional trainings, and English & Portuguese courses


• Community & Engagement: annual team building activities, knowledge-sharing workshops, and a strong sense of team work



Before applying for the above position please review our Candidate Privacy Notice here: https://legal.joom.com/recruitment/Joom_Unipessoal_LDA_Job_Applicant_Privacy_Notice.pdf. By responding to the vacancy, you acknowledge that you have read our Privacy notice.

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