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.

• Architect and build our end-to-end data platform, including ingestion, transformation, orchestration, quality monitoring, and data access layers. • Lead initiatives that break down data silos and enable seamless collaboration between business domains • Design and develop optimized database architecture and data schemas with strategic partitioning for large scale multi-modal data. • Implement scalable ETL/ELT pipelines that serve experimentation, training, validation, and real-time deployment needs across robotics and AI systems. • Collaborate with ML and robotics engineers to define and deliver the data infrastructure required for cutting-edge model development and real-world deployment. • Establish data governance, reproducibility, and lineage standards to ensure data integrity and traceability at scale. • Develop data contracts and API specifications to ensure reliable data exchange between robotics systems, ML models, and downstream applications. • Write production-grade, maintainable, and well-documented Python and SQL code for critical data workflows. • Help shape our MLOps, observability, and CI/CD practices for continuous learning systems in physical environments.

Role Description Join our Global Professional Services team as a Lead Data Engineer, where you will be instrumental in bridging the gap between client needs, business objectives, and cutting-edge technology solutions, particularly supporting our new Private Cloud clients. This role is for more than just a service provider; we are seeking a consultant-minded go-getter who is client-obsessed, a liquid thinker who thrives at pace, and is bold and brave in challenging the status quo. We are a team that values being part of a successful business and building partnerships based on trust, deep knowledge, respect, and unwavering support. We are passionate about technology, data, and AI and how it can be leveraged to solve our clients' most pressing business challenges. You will be a key player in understanding our clients' world, becoming their trusted partner, and proactively identifying opportunities for innovation and efficiency. Curiosity, accountability, and a positive, questioning mindset are at the core of our team's DNA – we don't just aim to meet expectations, we strive to exceed them. You will work collaboratively with global Circana teams, acting as the vital link to ensure seamless, unified support and strategic technological partnership for our clients. In this role, we are seeking a skilled and motivated Data Engineer to join a growing Global Team based in the UK. You will be responsible for designing, building, and maintaining robust data pipelines and infrastructure on the Azure cloud platform. You will leverage your expertise in PySpark, Apache Spark, and Apache Airflow to process and orchestrate large-scale data workloads, ensuring data quality, efficiency, and scalability. If you have a passion for Data Engineering and a desire to make a significant impact, we encourage you to apply! Duties & Responsibilities - Data Engineering & Data Pipeline Development - Design, develop, and optimize scalable DATA workflows using Python, PySpark, and Airflow - Implement real-time and batch data processing using Spark - Enforce best practices for data quality, governance, and security throughout the data lifecycle - Ensure data availability, reliability, and performance through monitoring and automation - Cloud Data Engineering - Manage cloud infrastructure and cost optimization for data processing workloads - Implement CI/CD pipelines for data workflows to ensure smooth and reliable deployments - Big Data & Analytics - Build and optimize large-scale data processing pipelines using Apache Spark and PySpark - Implement data partitioning, caching, and performance tuning for Spark-based workloads - Work with diverse data formats (structured and unstructured) to support advanced analytics and machine learning initiatives - Workflow Orchestration (Airflow) - Design and maintain DAGs (Directed Acyclic Graphs) in Airflow to automate complex data workflows - Monitor, troubleshoot, and optimize job execution and dependencies - Team Leadership & Collaboration - Lead a team of data engineers, providing technical guidance and mentorship - Foster a collaborative environment and promote best practices for coding standards, version control, and documentation Qualifications - Client-facing role, so strong communication and collaboration skills are vital (Ideally gained in a Consulting organisation) - 8+ years of experience in data engineering with expertise in Azure, PySpark, Spark, and Airflow - Strong programming skills in Python, SQL with the ability to write efficient and maintainable code - Deep understanding of Spark internals (RDDs, DataFrames, DAG execution, partitioning, etc.) - Experience with Airflow DAGs, scheduling, and dependency management - Knowledge of Git, Docker, Kubernetes, Terraform, and apply best practices of DevOps for CI/CD workflows - Excellent problem-solving skills and ability to optimize large-scale data processing - Experience in leading teams and working in Agile/Scrum environments - A proven track record of working effectively with global remote teams Bonus Points - Experience with data modeling and data warehousing concepts - Familiarity with data visualization tools and techniques - Knowledge of machine learning algorithms and frameworks What are we looking for? - An authentic optimist with a genuine passion for solving problems and driving progress - Intensely curious – you love to understand the 'why' and 'how' behind things, especially when it comes to technology and client challenges - Highly accountable for your actions, your deliverables, and the success of your clients - Comfortable and adept at building strong, professional relationships with both external clients and internal technical and business teams - Deeply committed to giving your best for your team and ensuring our technology solutions exceed client expectations - Confident in making informed decisions, weighing options and considering the technical and business implications - Highly organised, with meticulous attention to detail in managing documentation, communication, and time - Passionate about technology, Data, AI, and their application in solving real-world business problems - Previous experience translating client requirements into technical specifications - Previous experience building relationships with clients

• Diseñar y mantener modelos de datos analíticos. • Desarrollar y optimizar procesos ETL y pipelines de datos. • Construir soluciones de reporting y cuadros de mando en Power BI. • Trabajar junto a negocio para entender requisitos funcionales.