Senior Software Engineer

Overview About Business Unit: The Product team forms the crux of our powerful platforms and helps connect millions of customers worldwide with the brands that matter most to them. This team of innovative problem solvers develops and builds products that position Epsilon as a differentiator, encouraging an open and balanced marketplace built on respect for individuals, where every brand interaction holds value. Our full-cycle product engineering and data teams chart the future and set new benchmarks for our products, by using industry standard methodologies and sophisticated capabilities in data, machine learning, and artificial intelligence. Driven by a passion for delivering smart end-to-end solutions, this team plays a key role in Epsilon’s success story. Why are we looking for you? At Epsilon, we run on our people’s ideas. It’s how we solve problems and exceed expectations. Our team is now growing, and we are on the lookout for dedicated individuals who alwaysset the standardr by constantly challenging themselves and are experts in building customized solutions in the digital marketing space. So, are you someone who wants to work wpioneeringedge technology and enable marketers to create data-driven, omnichannel consumer experiences through data platforms? Then you could be exactly who we are looking for. Apply today and be part of a creative, innovative, anexperienceded team that’s not afraid to push boundaries or take risks. What will you enjoy in this role? As a Senior Software Engineer in the Cleanroom team, you will be driving delivery, and execution for critically important data systems. You will define engineering standards, implement the best practices, mentor junior engineers, and ensure the Cleanroom platform scales securely and reliably to support sustained business growth. Click here to view how Epsilon transforms marketing with 1 View, 1 Vision and 1 Voice. Responsibilities Deliver large-scale cloud-native data platforms primarily on AWS using Databricks and distributed processing frameworks to build highly scalable and resilient systems. Work hands-on across the technology stack - including Python, PySpark, Apache Spark, Databricks, AWS services, event-driven architectures, and SQL/NoSQL databases - to solve complex engineering challenges and maintain platform excellence. Partner closely with global engineering, product management, architecture, and business stakeholders to align technical solutions with strategic business objectives. Own the end-to-end software development lifecycle, including requirements gathering, solution design, development, deployment, observability, and documentation. Design and develop reusable, maintainable and scalable components and actively participate in the architecture discussions, technical design reviews, code reviews. Mentor and guide junior engineers, fostering a culture of innovation, accountability, collaboration, and technical excellence. Qualifications B.E/B.Tech/M.Tech/MCA in Computer Science, Information Technology or a related field. 5-8 years of strong software engineering experience, with significant expertise in large-scale data engineering and distributed systems architecture. Experience in Data Warehousing, Data Lakes, Delta Lake architecture, and modern big data ecosystem designs. Deep hands-on expertise in Databricks, Python, PySpark, and Apache Spark, with proven experience building high-performance distributed data processing solutions. Strong experience with AWS services such as S3, Glue, Athena and Lambda for building scalable and reliable cloud-native data platforms. Experience with messaging technologies such as Kafka and RabbitMQ, along with strong expertise in relational and NoSQL databases including SQL Server and MongoDB. Experience implementing robust testing strategies, including unit, integration, and regression testing, while adhering to engineering best practices. Strong understanding of CI/CD and DevOps practices using tools such as Jenkins, GitHub/GitLab, Bitbucket, and automated deployment pipelines. Strong critical thinking and analytical skills, with the ability to diagnose, troubleshoot, and solve complex technical problems effectively. Nice to have: AWS and Databricks certifications. Experience working with Azure and/or Google Cloud Platform (GCP). Exposure to Generative AI technologies including LLMs, RAG architectures, and Agentic AI systems, with experience designing and deploying AI-driven solutions. Additional Information Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. For decades, we’ve provided marketers from the world’s leading brands the data, technology and services they need to engage consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. And 1 Voice to harmonize engagement across paid, owned and earned channels. Epsilon’s comprehensive portfolio of capabilities across our suite of digital media, messaging and loyalty solutions bridge the divide between marketing and advertising technology. We process 400+ billion consumer actions each day using advanced AI and hold many patents of proprietary technology, including real-time modeling languages and consumer privacy advancements. Thanks to the work of every employee, Epsilon has been consistently recognized as industry-leading by Forrester, Adweek and the MRC. Epsilon is a global company with more than 9,000 employees around the world. Our pillars aren't just words. They're how we show up every day. People centricity: We focus on employee well-being in an environment where colleagues truly care about each other. Collaboration: We work together, support one another, and collectively achieve goals. Growth: There are endless opportunities for growth through learning, development and career advancement. Innovation: We drive progress through cutting-edge solutions and forward-thinking approaches. Flexibility: We’ve created a balance between work and personal life, and we encourage adaptability to solve problems creatively. Our values guide us to create value for our clients, our people and consumers. Act with integrity Work together to win together Innovate with purpose Respect all voices Empower with accountability These pillars and values are our foundation—shaping our culture, guiding our decisions, and uniting us in common purpose. Epsilon is an Equal Opportunity Employer. Epsilon is committed to promoting diversity, inclusion, and equal employment opportunities by using reasonable efforts to attract, recruit, engage and retain qualified individuals of all ethnicities and backgrounds, including, but not limited to, women, people of color, LGBTQ individuals, people with disabilities and any other underrepresented groups, traits or characteristics.