Lead Software Engineer

Why This Role

Epsilon is looking for a Lead Engineer to help drive the design delivery technical strategy and execution of core capabilities for 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 solutions that enable secure data-rich collaboration for enterprise clients.

What Youll Do

• Deliver large-scale cloud-native data platforms primarily on AWS using REST APIs microservices and event-driven applications to build highly scalable and resilient systems.
• Work hands-on across the technology stack including TypeScript JavaScript AWS services event-driven architecture and SQL/NoSQL databases to solve complex engineering challenges and maintain platform excellence.
• 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.
• Lead product-wide technical initiatives focused on performance optimization scalability reliability security governance and cost efficiency.
• Mentor and guide junior engineers fostering a culture of innovation accountability collaboration and technical excellence.

• Education: Bachelors degree in computer science Information Technology or a related technical field.
• Experience: 8 years of software engineering experience designing building and maintaining large-scale production applications.
• Architecture: Proven expertise in distributed systems microservices design and building robust REST APIs.
• Tech-Stack: Strong hands-on proficiency across the modern JavaScript/TypeScript ecosystem including modern frontend frameworks (e.g. React ) and server-side runtimes/frameworks like NestJS or Fastify.
• Data: Comprehensive experience with event-driven architectures and messaging technologies (Kafka RabbitMQ SNS/SQS) alongside broad proficiency across relational and NoSQL databases (PostgreSQL SQL Server Aurora DynamoDB MongoDB Redis).
• Infrastructure: Deep experience building cloud-native applications on a major cloud platform (AWS Azure or GCP) utilizing core services for object storage serverless compute API management and event routing.
• DevOps: Experience with Infrastructure as Code (IaC) tools like Terraform or Ansible CI/CD pipeline automation and comprehensive testing strategies.
• AI: Practical experience leveraging agent-assisted coding tools (e.g. Cursor Claude Code) to optimize software delivery velocity without compromising on code quality.

Preferred Qualifications

• Education: Masters degree in Computer Science Information Technology or a related technical field.
• Experience: 10 years of software engineering experience building enterprise-grade highly scalable distributed systems.
• Data: Hands-on experience with modern big data platforms and processing frameworks such as Databricks Snowflake or PySpark.
• AI: Practical exposure to Generative AI architectures including Large Language Models (LLMs) Retrieval-Augmented Generation (RAG) and autonomous agentic systems.

Who Thrives Here

This is a strong opportunity for a lead engineer who enjoys solving complex technical problems shaping platform direction through hands-on leadership and mentoring others through example. If you are excited by the idea of building scalable privacy-first data systems in a fast-moving environment this role offers meaningful scope and impact.

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

When You Join Us Well Create Something EPIC Together
Epsilon is a global data technology and services company that powers the marketing and advertising ecosystem. For decades weve provided marketers from the worlds 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.

Epsilons 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 9000 employees around the world.

Our pillars arent just words. Theyre how we show up every day.

• People centricity: We focus on employee well-being in an environment where colleagues truly care about each other.
• Collaboration: We work together support one another and collectively achieve goals.
• Growth: There are endless opportunities for growth through learning development and career advancement.
• Innovation: We drive progress through cutting-edge solutions and forward-thinking approaches.
• Flexibility: Weve created a balance between work and personal life and we encourage adaptability to solve problems creatively.

Our values guide us to create value for our clients our people and consumers.

• Act with integrity
• Work together to win together
• Innovate with purpose
• Respect all voices
• Empower with accountability

These pillars and values are our foundationshaping our culture guiding our decisions and uniting us in common purpose.

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 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.

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 needing 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 for employment qualified applicants with criminal histories 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.