Senior Full-Stack Engineer - Schiller Park Illinois

Company: Epsilon Strategy & Insights
Location: Schiller Park, Illinois
Posted On: 04/08/2026

We are seeking an experienced Senior Full Stack Engineer to join our Product Engineering team. This role will work on a team of engineers in all aspects of the software development lifecycle. This person will contribute significantly to both front-end and backend development, maintaining alignment to our quality processes, contributing to component development, and collaborating with the rest of the team for cross-team functionality. Additional responsibilities include but are not limited to: • Contribute to the implementation and maintenance of our platform code and components, spanning both frontend and backend. • Collaborate with platform, operations, and engineering teams across the organization. • Ensure features are well-tested, contributing to our continuous integration environment. • Diagnose performance bottlenecks and tackle critical production issues across the entire stack. • Collaborate in crafting solutions using both backend and frontend technologies. What You’ll Achieve • Deliver high-performance, low-latency software solutions for our platform. • Improve 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. Who You Are: • What you’ll bring with you: o Bachelor’s degree in Computer Science or a related field, or equivalent experience, with 5 years in full stack software development. o Knowledge of high-performance software and clean architecture principles. o Experience with Single Page Applications (SPAs) using TypeScript and Angular or other modern frameworks/technologies. o Strong expertise in backend development with Python or similar languages. o Experience working on low-latency, high-throughput systems. o Familiarity with public cloud providers and technologies like AWS, Azure, Kubernetes, and Docker. o Clear and honest communication are key to success in this role. • Why you might stand out from other talent: o Master’s Degree in Computer Science or a related field o Exposure to working in the Ad Tech industry. o Experience launching tech products across multiple sectors. o Comfortable using tech platforms such as Salesforce, Eloqua, Asana, or similar. o Familiarity with performance metrics and KPIs to assess GTM success. More...

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