ZEFR

Title: Senior Data Engineer Location: Marina del Rey, CA Employment Type Full time Location Type Hybrid Department: Technology Job Description: What we do: Zefr is the leader in AI-powered content classifications for brands and advertisers. Zefr’s platform is purpose built for multi-modal content understanding on open platforms like YouTube, TikTok, Meta and Snap, with pre-bid activation and verification solutions. Our products safeguard media and AI investments, while maximizing performance and efficacy on those channels. Headquartered in Los Angeles with global offices across New York, Chicago, London, Toronto, Singapore, and more, Zefr is redefining what trust and transparency means for social media in the age of AI. What you’ll do: We are looking for a passionate data engineer to collaborate and grow alongside our experienced data engineering team. The team is responsible for a broad range of systems and technologies: - Design, build, and operate data transformation pipelines in Snowflake and dbt - Design, build, and operate complex workflows using Apache Airflow and Python - Work on our roadmap for AI-assisted data visualization and analysis tools What we’re looking for: - Bachelor’s or Master’s degree in an engineering discipline (BEng/MEng) - 8+ years of experience in software engineering, data analysis, and/or data engineering - Expert in building workflows using dbt and SQL. - Strong experience with Python - Knowledge of systems engineering principles and product lifecycle management - Strong communication and collaboration skills Benefits (for US-based employees): - Flexible PTO - Medical, dental, and vision insurance with FSA options - Company-paid life insurance - Paid parental leave - 401(k) with company match - Professional development opportunities - 13 paid holidays off - Summer Fridays (we leave early) - In-office, hybrid, and fully-remote work options available - In-office lunches and lots of free food - Optional in-person and virtual events (we like to celebrate!) Compensation (for US-based employees): The anticipated salary for this position is between $160,000 and $180,000. Within the range, individual pay is determined by factors such as job-related skills, experience, and relevant education or training. If your compensation expectations fall outside of this range, it may still be worth having a conversation. Zefr is an equal opportunity employer that embraces diversity and inclusion in the workplace. We are committed to building a team that represents a variety of backgrounds, skills, and perspectives because we know this only makes us better. We strongly encourage women, persons of color, LGBTQIA+ individuals, persons with disabilities, members of ethnic minorities, foreign-born residents, and veterans to apply even if you do not meet 100% of the qualifications.

• We are hiring a Data Scientist focused on algorithm development and implementation of natural language processing and computer vision models. • These models are applied to tens of millions of social media posts daily! • You will be working with state of the art transformer models, as well as large language models and vision language models, to build sophisticated compound AI systems. • We work with semantic and image similarity search, leveraging vector databases storing hundreds of millions of content embeddings to find relevant data! • You will be expected to work with all of these components, balancing cost and quality to develop the best performing classifiers possible!

• Assist clients & testing partners with the implementation and integration of our products which may include training, troubleshooting and proactive follow up. • Be the day-to-day contact for your clients, responsible for fielding incoming requests from them, proactively engaging them as well as building and expanding relationships. • Provide strategic advice and assist in meeting primary KPIs on clients’ advertising investment by working closely with them in a consultative role. • Provide operational and strategic support for test clients, ensuring smooth onboarding & proper testing structure along with post-test reporting. • Support customers through technical and strategic challenges while also expressing client needs to internal teams to improve the overall product experience. • Proactively monitor campaign performance, identify optimization opportunities, and provide recommendations for improvement. • Analyze client data to showcase value, create actionable solutions and lead initiatives to drive performance and reduce costs. • Identify common customer challenges and partner with cross-functional internal team members to interpret business and product needs. • Understand the full suite of Zefr products and services to identify and deliver on opportunities for additional Zefr-driven value.