Senior Software Engineer

See how Epsilon powers connected marketing by unlocking the full potential of data and identity.

At Epsilon we help leading brands use data identity and technology to drive measurable business outcomes. Our Clean Room product enables privacy-first data collaboration audience intelligence and activation at scale combining modern cloud architecture with data-rich capabilities for marketers analysts and data scientists. As our platform evolves we are also investing in agentic and AI-powered capabilities that help users automate complex workflows accelerate insight generation and interact with data and systems more intelligently and efficiently.

Epsilon is looking for a Senior Software Engineer to drive the design delivery technical strategy and execution of key capabilities within the Epsilon Clean Room our privacy-first data collaboration this role you will lead through technical expertise partner closely with Product Architecture and Engineering stakeholders and build scalable secure solutions that enable enterprise clients to collaborate on and derive value from data while preserving privacy. You will play a pivotal role in advancing the platforms Clean Room Insights capabilities while maintaining the highest standards of privacy security and data governance.

• Design develop and maintain large-scale cloud-native applications and platforms on AWS leveraging REST APIs microservices and event-driven architectures to deliver resilient secure and high-performing solutions.
• Work hands-on primarily across APIs microservices and service-layer components collaborating with frontend and data platform teams to deliver end-to-end Clean Room capabilities.
• 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.
• Provide technical guidance and support to team members through design reviews code reviews and collaborative problem-solving.

• Education: Bachelors degree in computer science Information Technology Engineering or a related technical field.
• Experience: 7 years of software engineering experience designing building and operating large-scale production applications APIs microservices and distributed systems.
• Architecture & System Design: Experience designing scalable resilient and secure distributed systems event-driven architectures and APIs with a strong understanding of performance reliability observability and maintainability.
• API & Service Engineering: Strong experience designing developing securing and operating scalable APIs microservices and distributed applications using modern JavaScript/TypeScript technologies.
• Application Development: Experience building cloud-native applications and service-based solutions that support complex business workflows and customer-facing capabilities.
• Messaging & Data Technologies: Experience with event-driven architectures messaging platforms and relational and NoSQL databases supporting scalable applications.
• Cloud Engineering: Proven experience building and operating cloud-native applications on AWS Azure or GCP leveraging services for compute storage API management event routing monitoring and security.
• DevOps: Experience with Infrastructure as Code (Terraform Ansible or similar tools) CI/CD automation automated testing logging monitoring observability and production support for mission-critical services.
• AI-Assisted Development: Practical experience leveraging AI-powered engineering tools such as Cursor Claude Code or GitHub Copilot to improve developer productivity while maintaining high standards of code quality.

When you join Epsilon well create something EPIC together.Were a global leader in data and identity with deep expertise in digital media clean rooms customer data platforms loyalty and marketing services. Positioned at the center of Publicis Groupe Epsilon helps brands deliver personalized experiences at scale and build lasting customer relationships by unlocking the full potential of data and identity. Epsilon operates in 30 countries across EMEA the Americas and APAC with more than 8000 employees.

Check out a few of these resources to learn more about what makes Epsilon so EPIC:

Our Culture: at Epsilon: has five values that define our culture and guide us as we create value for our clients our people and consumers. We seek candidates who align with our company values demonstrate them and make them meaningful in their day-to-day work:

• Act with integrity. We are transparent and have the courage to do the right thing.
• Work together to win together. We believe collaboration is the catalyst that unlocks our full potential.
• Innovate with purpose. We shape the market with big ideas that drive big outcomes.
• Respect all voices. We embrace differences and foster a culture of connection and belonging.
• Empower with accountability. We trust each other to own and deliver on common goals.

Because You Matter

As an Epsilon employee you deserve perks and benefits that put you your family and your finances first. Our benefits encompass a wide range of offerings including but not limited to:

• Time to recharge: Flexible time off (FTO) 14 paid holidays paid sick time
• Family well-being: Parental/new child leave childcare & elder care assistance adoption assistance
• Extra perks: Comprehensive health coverage 401(k) tuition assistance commuter benefits professional development employee recognition charitable donation matching health coaching and counseling

Epsilon benefits are subject to eligibility requirements and other terms.

Epsilon is an Equal Opportunity Employer. Epsilons 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 to request an accommodation.

For San Francisco Bay and Los Angeles Areas: Epsilon will consider qualified applicants with criminal histories for employment in a manner consistent with the City of Los Angeles Fair Chance Initiative for Hiring Ordinance and San Francisco Police Code Sections 4901-4919 commonly referred to as the San Francisco Fair Chance Ordinance. Applicants with criminal histories are welcome to apply. #LI-KM1