Job Description

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.

About the Role:

We are looking for a Senior Software Engineer (Full Stack) to help design and build scalable, high-performance platforms that power data-driven marketing and advertising use cases. This is a high-impact role for an engineer who thrives with ownership, understands system-level thinking, and enjoys working across frontend, backend, and data layers.

You will contribute to architecture and implementation, optimize performance and reliability, and collaborate closely with product, design, and platform teams to deliver robust solutions used at scale.

Click here to view how Epsilon transforms marketing with 1 View, 1 Vision and 1 Voice.

Responsibilities

How You’ll Make an Impact

Design, implement, and operate scalable, high-throughput web applications and services
Build and evolve backend services, APIs, and data integrations supporting data-intensive workflows
Develop modern, performant user interfaces and internal tools when needed
Collaborate with product and design teams to translate business requirements into technical solutions
Optimize performance, troubleshoot production issues, and eliminate bottlenecks across the stack
Champion clean code, testing best practices, and CI/CD automation
Contribute to system observability, monitoring, and reliability improvements
Mentor junior engineers and actively participate in design and code reviews

What You’ll Achieve

Deliver reliable, scalable features that support mission-critical marketing and analytics workflows
Build services and interfaces that enable rapid iteration and future platform growth
Improve system performance, stability, and developer productivity
Raise engineering standards through thoughtful design and execution

Qualifications

Strong experience with frontend frameworks (React, Next.js, Angular)
Strong experience with backend development (Java/Spring Boot, Node.js, or Python)
Hands-on experience with SQL and NoSQL databases (MySQL, PostgreSQL, BigQuery, etc.)
Experience building and consuming RESTful APIs (gRPC is a plus)
Exposure to Docker and Kubernetes in production environments
Experience working with cloud platforms (AWS or GCP)
Proficiency with Git and CI/CD tools (Jenkins, GitHub Actions)
Strong problem-solving, debugging, and system design skills

Nice to Have