Lead Software Engineer

Publicis Groupe; New York (NY); On-site; USD 119,600 - 222,000; Full time

Benefits offered by this job

Flexible time off (FTO)

Comprehensive health coverage

401(k)

Tuition assistance

Professional development

Childcare assistance

Job summary

Publicis Groupe is hiring a Lead Engineer to drive technical strategy for Epsilon Clean Room, focusing on scalable data collaboration solutions. The ideal candidate will design, deliver, and oversee large-scale cloud-native data platforms, working with technologies including AWS, Node.js, and TypeScript.

This role requires significant experience in software engineering and the ability to lead projects while mentoring junior engineers. The position offers a competitive salary and comprehensive benefits.

Qualifications

• 8+ years of software engineering experience designing and maintaining large-scale applications.
• Proven expertise in microservices design and building distributed systems.
• Strong knowledge of cloud platforms like AWS, Azure, or GCP.

Responsibilities

• Deliver cloud-native data platforms primarily on AWS.
• Mentor junior engineers and lead technical initiatives.
• Own the software development lifecycle from gathering requirements to deployment.

Skills

Distributed systems design

Microservices architecture

REST APIs development

Modern JavaScript/TypeScript

Event-driven architectures

Cloud-native applications

Infrastructure as Code (IaC)

Practical experience with AI tools

Education

Bachelor’s degree in computer science, Information Technology

Master’s degree in Computer Science, Information Technology

Tools

AWS

Terraform

Kafka

PostgreSQL

React

Node.js

Job description

Overview

Epsilon is looking for a Lead Engineer to drive the design, delivery, technical strategy, and execution of core capabilities for Epsilon Clean Room, our privacy‑first data collaboration platform. In 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.

Responsibilities

• 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 Node.js, TypeScript, JavaScript, Express.js, 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.

Qualifications

• Education: Bachelor’s 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 (React, Next.js) and server‑side runtimes/frameworks like Node.js, Express.js, 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 (Cursor, Claude Code) to optimize software delivery velocity without compromising on code quality.

Preferred Qualifications

• Education: Master’s 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.

Base Salary

Base Salary: $119,600.00 – $222,000.00 Annually

Compensation

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.

Benefits

• 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 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 [e-mail] to request an accommodation.