Senior Staff Software Developer Jobs (NOW HIRING)

Overview
How You'll Make an Impact
We're looking for an outstanding Senior Staff Software Engineer who can join an established team and lead/support multiple projects. The Senior Staff Software Engineer will use their hands-on expertise in Software development to expand and optimize architecture, data flows, infrastructure, APIs, and automation to support the Epsilon PeopleCloud Platform. A successful person in this role will take ownership of the development, testing, and maintenance of several product features; enforce best practices and lead the development of new components providing insights derived from large data sets in Databricks.
The candidate will work across functional teams and collaborate very closely with engineering and architecture leadership to plan, develop and deploy features. Additionally, the right candidate will have strong experience in distributed architecture, and a proven track record in programming and software development including analysis, design, development, implementation, testing and maintenance.
Click here to view how Epsilon transforms marketing with 1 View, 1 Vision, 1 Voice.
Responsibilities
What You'll Achieve

• Collaborate with the engineering and architecture leadership to plan for new features, architect solutions, develop API data services, and monitor and maintain platform reliability.
• Responsible for writing code and maintaining/enforcing coding standards.
• Candidate will be expected to be involved in several projects and should be comfortable multi-tasking.
• Collaborate with the team for QA automation to define test cases and help resolve code issues.
• Identify areas of opportunity for optimization by eliminating redundancies and improving automation and operational efficiency.
• Lead the engineering team during technical discussions, planning, and code review sessions.
• Collaborate with other engineers, architects, product managers and product support teams.
• Lead evaluation sessions with internal/external vendors/teams to drive enhancements to systems architecture designs.
• Lead communities of practice across various software engineering teams to expand the use of new and leading technologies.
• Oversee, motivate and mentor a small team of developers.

Qualifications
Who You Are

• What you'll bring with you:
• Bachelors or Masters degree in computer science or electrical engineering
• 12+ years hands-on software engineering
• 6+ years in a cloud deployment.
• Must have experience leading/mentoring engineering teams.
• Highly skilled in at least one programming language (Python, Java, or Scala).
• Proficient understanding of cloud computing, distributed computing and scalability principles.
• Must have practical knowledge of at least one major cloud service (AWS, Azure, GCP)
• Expertise in data warehousing, data streaming, and relational databases.
• Strong understanding of SQL
• Strong knowledge of Databricks, Unity Catalog, Delta Lake, Workflows, Live Tables
• Good understanding of Apache Spark
• Strong knowledge of IaC tools like Terraform or Ansible
• Experience with various CI/CD tools
• Strong knowledge of data structures, algorithms, and techniques to tune software for maximum performance.
• Strong understanding of software architecture design.
• Outstanding communication skills and the ability to work well within agile scrum environment and within tight deadlines.
• Experience working with containers in Docker and Kubernetes
• Experience in Test Driven Development Practices.
• Experience working in global agile scrum teams.
• Understanding of AI concepts
• Experience with spec driven AI assisted development
• Experience with:
• RAG (Retrieval Augmented Generation) architectures
• Agentic AI systems (tool using agents, orchestration, multi step reasoning workflows).
• Why you might stand out from other talent:
• Any certifications with the subject matter listed above is preferred.

Additional Information
When you join Epsilon, we'll create something EPIC together. We're 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 8,000 employees.
Check out a few of these resources to learn more about what makes Epsilon so EPIC:
Our Culture: https://www.epsilon.com/us/about-us/our-culture-epsilon
Life at Epsilon: https://www.epsilon.com/us/about-us/epic-blog
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. 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 LeaveofAbsence@epsilon.com 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.
Compensation Range: USD $115,500.00 - USD $214,500.00/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. 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 10/13/2026.