Job Description

We are a small engineering team and are hiring a Staff Software Engineer to be a force multiplier-someone who can materially raise technical standards, improve delivery momentum, and lead complex engineering efforts through hands-on execution and influence.

This is a Staff-level individual contributor role: no people management, but significant ownership, architectural responsibility, and team impact.

What You'll Do

• Own the architecture and delivery of high-performance backend services and REST APIs (Java), from design through production.
• Design, build, and optimize data-intensive systems, including Spark workloads and performance tuning.
• Deliver cloud-native solutions across AWS, Azure, and GCP, integrating with platforms such as Databricks.
• Raise the engineering bar by leading design reviews, improving code quality and operational practices, and mentoring other engineers.
• Use AI-assisted engineering tools (e.g., coding copilots, test generation, refactoring, design exploration) to increase speed and quality-and help establish team norms for responsible, effective use.

What We're Looking For

• Proven experience building and operating production distributed systems.
• Strong backend expertise in Java and data-driven services at scale.
• Hands-on experience with Apache Spark and modern data tooling (Hadoop/Hive exposure a plus).
• Solid cloud experience (AWS, Azure, or GCP) and modern platform tooling (Kubernetes, Docker; Airflow or equivalents).
• Demonstrated Staff-level behaviors: strong technical judgment, cross-team influence, and the ability to level up others through mentorship and standards.

Our Current Stack

• Backend: Java, RESTful microservices, occasional Python
• Data: Spark, Databricks, PostgreSQL, Scylla
• Cloud: AWS, Azure, GCP
• Platform: Kubernetes, Docker, some AWS Lambda,

Who Thrives Here

You enjoy solving ambiguous problems, care deeply about engineering quality, and lead by building. You're the engineer teams rely on to get unstuck, make sound technical tradeoffs, and ship durable systems.

Additional Information

When You Join Us, We'll Create Something EPIC Together
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.

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 the following:

• Time to Recharge: Flexible time off (FTO), 15 paid holidays
• Time to Recover: 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.

#LI-NK1

Compensation Range: USD $120,800.00 - USD $224,300.00/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. Temporary roles may be eligible to participate in our freelancer/temporary employee medical plan through a third-party benefits administration system once certain criteria have been met. Temporary roles may also qualify for participation in our 401(k) plan after eligibility criteria have been met. For regular roles, the Company will offer medical coverage, dental, vision, disability, 401k, and paid time off. The Company anticipates the application deadline for this job posting will be 8/18/2026.