Lead Full-Stack Engineer

Overview

We are seeking an experienced Full Stack Engineering Lead to join our Product Engineering team. This role will help lead our team of engineers in all aspects of the software development lifecycle. In this role you will serve as an SME for the team and leadership across front‑end and backend development, help drive consistent quality by ensuring thoughtful alignment to development processes, contribute to the design and development of the components for which our team is responsible and collaborate with team leads to help ensure successful cross‑team functionality.

You will:

• Lead the implementation and maintenance of our platform code and components, spanning both frontend and backend.
• Guide platform, operations, and engineering teams through collaborative efforts.
• Ensure features are well‑tested, contributing to our continuous integration environment.
• Diagnose performance bottlenecks and solve critical production issues across the entire stack.
• Collaborate in designing solutions using both backend and frontend technologies.

• Deliver high‑performance, low‑latency software solutions for our platform.
• Enhance the platform with new technologies and techniques in both frontend and backend areas.
• Ensure robust testing and integration to maintain software quality.
• Identify and solve critical issues to maintain platform performance.

• What you’ll bring with you:
  • Bachelor’s degree in Computer Science or a related field, or equivalent experience, with 5+ years in full stack software development.
  • Knowledge of high‑performance software and clean architecture principles.
  • Experience with Single Page Applications (SPAs) using Type Script and Angular or other modern frameworks/technologies.
  • Strong expertise in backend development with Python or similar languages.
• Why you might stand out from other talent:
  • Master’s degree or 10+ years of software development experience.
  • Experience in the Ad Tech industry.
  • Experience working on low‑latency, high‑throughput systems.
  • Familiarity with public cloud providers and technologies like AWS, Azure, Kubernetes, and Docker.
  • Clear and honest communication are key to success in this role.

This role requires a blend of technical expertise, creative problem‑solving, and collaboration to drive the platform's success using innovative frontend and backend technologies.

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Base Salary: $91,500 - $152,500

Actual compensation within the range will be dependent upon, but not limited to the individual’s skills, experience, qualifications, location and application employment laws. The salary pay range is subject to change and may be modified at any time.

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 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 , commonly referred to as the San Francisco Fair Chance Ordinance. Applicants with criminal histories are welcome to apply.