
Contextual targeting for smarter video advertising
Zefr is a video advertising technology company headquartered in Venice, California, specializing in contextual targeting solutions for brands on platforms like YouTube. With a focus on enhancing brand safety and audience engagement, Zefr serves a diverse clientele, including major brands in the ente...
Zefr offers competitive salaries, equity options, flexible PTO, and a remote work policy that supports a healthy work-life balance....
Zefr fosters a culture of innovation and collaboration, encouraging employees to explore new ideas in the rapidly evolving video advertising landscape...

Zefr • Tel Aviv, Israel
Zefr is hiring a Data Scientist to focus on algorithm development and implementation of natural language processing and computer vision models. You'll work with Python and SQL to build sophisticated AI systems. This role requires a strong background in machine learning and data science.
You have a solid background in data science, particularly in algorithm development and implementation of natural language processing and computer vision models. You are comfortable working with state-of-the-art transformer models, large language models, and vision language models, applying them to analyze tens of millions of social media posts daily. Your experience includes leveraging vector databases to perform semantic and image similarity searches, and you understand the balance between cost and quality in developing high-performing classifiers. You are passionate about keeping up with the latest advancements in machine learning and computer vision, and you thrive in collaborative environments where learning is mutual. You are based in Israel and are looking for an opportunity to contribute to a leading technology company.
Experience with AI technologies and a strong understanding of the data science landscape will be beneficial. Familiarity with working in social media environments and knowledge of content adjacency frameworks will set you apart. You are encouraged to apply even if you do not meet 100% of the qualifications.
As a Data Scientist at Zefr, you will be responsible for developing and implementing advanced algorithms that utilize natural language processing and computer vision techniques. You will work closely with a team of engineers and researchers to build sophisticated AI systems that enhance brand marketing strategies in social media environments. Your role will involve analyzing vast amounts of data from social media platforms, ensuring that the models you develop are both accurate and efficient. You will also be expected to contribute to the ongoing research and development efforts within the company, staying abreast of the latest trends and technologies in the field of data science. Collaboration with cross-functional teams will be key as you work to integrate your models into Zefr's existing technology stack.
Zefr provides a dynamic work environment where innovation is encouraged. You will have the opportunity to work with cutting-edge technologies and contribute to projects that have a significant impact on the marketing industry. We offer competitive compensation and benefits, along with a culture that values diversity and inclusion. Join us in our mission to empower brands with responsible marketing solutions in the evolving landscape of social media.
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