Staff Software Engineer

Staff Software Engineer A subsidiary of Publicis Groupe, Epsilon is a leading provider of multi-channel marketing services, technologies, and database solutions. At Epsilon, we help some of the world's biggest brands discover real opportunities inside the data types, delimiters and decimals. We're looking for an outstanding Staff Software Engineer to provide technical leadership across multiple critical initiatives on an established, high-performing team. This is a hands-on engineering leadership role — you will own the design, delivery, and operational health of solutions end-to-end, from architecture through production support. You will lead our progress toward development practices improved by artificial intelligence. You will guide by example with AI-assisted development based on clear specifications while maintaining the engineering rigor our production systems require. The right candidate offers deep expertise in Java/Spring Boot backend services and Databricks/Spark data platforms, the anchors of our current stack. They have a proven ability to mentor engineers, improve code quality, and collaborate with engineering, product, and architecture leadership. Responsibilities Take end-to-end ownership of solutions — from architecture and development through deployment, operations, and client-facing production support. Champion AI-assisted development based on detailed specifications as a core engineering practice across teams. Lead by example using tools like Cursor, Claude Code, and Kiro — and actively drive adoption so the broader engineering organization evolves with the industry. Architect, build, and integrate RAG-based solutions and Agentic AI workflows into enterprise systems. Lead design and delivery of Java/Spring Boot backend services and Databricks/Spark data platform solutions — the two anchors of our current production stack. Provide technical leadership in architecture reviews, sprint planning, and code review sessions; enforce coding standards and engineering guidelines. Mentor and develop engineers across the team. Focus especially on development practices guided by artificial intelligence and production-quality engineering. Collaborate across product, data, platform, and cross-functional teams to plan and deliver features aligned with the Epsilon PeopleCloud Platform. Qualifications Bachelor's or Master's degree in Computer Science, Engineering, or related field 10+ years of hands-on software engineering experience; 5+ years in cloud environments Demonstrated experience leading and mentoring engineering teams Strong expertise in Java (Spring Boot or equivalent frameworks) and Python; Scala a plus Strong knowledge of Apache Spark and Databricks (Unity Catalog, Delta Lake, Workflows, Live Tables) Expertise in SQL, data warehousing, data streaming, and relational/NoSQL databases Solid understanding of REST APIs, microservices, and distributed systems Practical knowledge of at least one major cloud platform (AWS, Azure, or GCP) Experience with IaC tools (Terraform or Ansible), CI/CD pipelines, Docker, and Kubernetes Mandatory hands-on, day-to-day usage of spec-driven AI assisted development using tools such as Cursor, Claude Code, or Kiro Ability to validate, refine, and productionize AI-generated code against explicit technical specifications Mandatory hands-on experience with RAG (Retrieval Augmented Generation) architectures Mandatory hands-on experience with Agentic AI systems (tool-using agents, orchestration, multi-step reasoning workflows) Strong sense of operational ownership — comfortable supporting production systems, resolving incidents, and engaging on client-impacting issues Outstanding communication skills; proven ability to influence technical direction and collaborate across engineering, product, and architecture teams Experience in Test-Driven Development and agile scrum environments Why you might stand out from other talent: Certifications in any of the subject areas listed above Frontend exposure (Angular or similar frameworks) Observability, monitoring, and performance tuning experience Experience working in Unix/Linux environments, including scripting and automation Epsilon operates in 30+ countries across EMEA, the Americas and APAC, with more than 8,000 employees. Epsilon helps brands deliver personalized experiences at scale and build lasting customer relationships by unlocking the full potential of data and identity. Epsilon benefits are subject to eligibility requirements and other terms. Epsilon is an Equal Opportunity Employer. Epsilon's policy is not to discriminate against any applicant or employee based on actual or perceived race, age, sex or gender (including pregnancy), marital status, national origin, ancestry, citizenship status, mental or physical disability, religion, creed, color, sexual orientation, gender identity or expression (including transgender status), veteran status, genetic information or any other characteristic protected by applicable federal, state or local law. Epsilon also prohibits harassment of applicants and employees based on any of these protected categories. Epsilon will provide accommodations to applicants who need accommodations to complete the application process. Please reach out to View email address on click.appcast.io to request an accommodation. Compensation Range: USD $105,000.00 - USD $195,000.00/Annually. This is the pay range the Company believes it will pay for this position at the time of this posting. Consistent with applicable law, compensation will be determined based on the skills, qualifications, and experience of the applicant along with the requirements of the position, and the Company reserves the right to modify this pay range at any time. Digitas