Overview About BU The Architecture Team plays a pivotal role in the end-to-end design, governance, and strategic direction of product development within Epsilon People Cloud (EPC). As a centre of technical excellence, the team ensures that every product feature is engineered to meet the highest standards of scalability, security, performance, and maintainability. Their responsibilities span across architectural ownership of critical product features, driving techno-product leadership, enforcing architectural governance, and ensuring systems are built with scalability, security, and compliance in mind. They design multi cloud and hybrid cloud solutions that support seamless integration across diverse environments and contribute significantly to interoperability between EPC products and the broader enterprise ecosystem. The team fosters innovation and technical leadership while actively collaborating with key partners to align technology decisions with business goals. Through this, the Architecture Team ensures the delivery of future-ready, enterprise-grade, efficient and performant, secure and resilient platforms that form the backbone of Epsilon People Cloud. We are looking for a highly skilled Lead Software Engineer with strong expertise in Java, real-time streaming systems (Kafka), distributed databases, and AWS cloud technologies. The ideal candidate will also have exposure to large-scale data pipelines and experience working with NoSQL technologies such as HBase or Aerospike (nice-to-have). In this role, you will provide technical leadership, design scalable architectures, mentor engineers, and drive high-quality delivery across mission-critical data and streaming platforms. Click here to view how Epsilon transforms marketing with 1 View, 1 Vision and 1 Voice. Responsibilities Technical Leadership & Architecture Lead the design and development of scalable, resilient, and high-performance backend services using Java/Spring Boot. Architect real-time streaming solutions based on Apache Kafka, including producers, consumers, stream processing, and event-driven microservices. Ensure strong data modeling and optimal usage of relational and NoSQL databases. Drive engineering best practices: code quality, design reviews, CI/CD, observability, and performance optimization. Backend & Streaming System Development Build microservices and distributed systems with strong APIs (REST or gRPC). Implement event-driven architectures, streaming ETL, and stateful stream processing. Design and maintain Kafka infrastructure (topics, partitions, schemas, offset management). Ensure data consistency, idempotency, and scalability across services. Data Engineering & Storage Collaborate with data engineering teams to design and optimize pipelines. Work with large datasets using relational & NoSQL stores (MySQL, Postgres, DynamoDB, HBase, Aerospike, etc.). Integrate data pipelines with backend services, ensuring high throughput and reliability. Cloud & DevOps Build and deploy services on AWS (EC2, ECS/EKS, Lambda, S3, DynamoDB, RDS). Implement observability using tools like CloudWatch, Prometheus, ELK, Grafana. Work with Docker/Kubernetes for containerization and orchestration. Optimize infrastructure cost, performance, resilience, and scalability. Team Leadership & Collaboration Mentor and guide engineers in architecture, design patterns, and scalable system design. Facilitate technical discussions, backlog grooming, sprint planning, and cross-team coordination. Work closely with Product, Data, and DevOps teams to translate requirements into system designs. Take end-to-end ownership from design → development → deployment → monitoring. Qualifications Core Skills 8–12+ years of hands-on backend engineering experience. Strong proficiency in Java (Collections, Concurrency, Streams, Spring Boot). Deep experience with Apache Kafka (core, Streams, Connect). Strong understanding of distributed systems, event-driven architecture, and streaming guarantees. Experience with AWS cloud services (EC2, ECS/EKS, S3, Lambda, CloudWatch, RDS). Solid experience in SQL and relational databases (MySQL, PostgreSQL). Familiarity with microservices design, API best practices, and system decomposition. Experience in performance tuning, memory optimization, and high-throughput system design. Nice-to-Have Skills Experience with HBase, Aerospike, or similar NoSQL key-value/columnar stores. Exposure to Spark, Flink, or streaming ETL frameworks. Knowledge of Terraform or IaC tools. Experience with monitoring and alerting systems. 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. #DNI