Senior Full Stack Engineer, Sponsored Ads

Chewy Chewy · Retail · Boston, MA

Senior Full Stack Engineer for Chewy's Sponsored Ads platform, focusing on building scalable, high-performance advertising systems. Responsibilities include leading frontend development, designing and implementing low-latency services, developing APIs, building resilient systems with observability, and collaborating with product managers and data scientists. Requires 5-10 years of experience in backend and frontend development with modern languages and frameworks, and experience integrating AI/ML models.

What you'd actually do

  1. Lead project delivery and system architecture for full stack services, while mentoring junior engineers and promoting engineering excellence across the team.
  2. Design and implement scalable, low-latency services in Typescript, Java, Python, powering core advertising capabilities such as auction processing, targeting, and performance tracking.
  3. Develop robust and well-documented RESTful APIs to support campaign management, reporting, and integration with advertiser-facing tools.
  4. Build resilient systems with strong observability, leveraging automated testing, monitoring, and CI/CD pipelines using infrastructure-as-code tools like Terraform.
  5. Collaborate closely with product managers, data scientists, and fellow engineers to build systems that support real-time and asynchronous workflows.

Skills

Required

  • 5-10 years of experience as a Software Engineer
  • strong focus on backend development
  • modern languages and frameworks including Typescript, Java, Python, SpringBoot, NextJS and React
  • Proven experience building scalable, highly available systems
  • Experience integrating AI/ML models working alongside Data Science team
  • Ninja coding and debugging skills
  • Passion for data-driven development, observability, and metrics
  • Solid understanding of CS fundamentals: object-oriented design, algorithms, and problem-solving
  • Excellent verbal and written communication skills

Nice to have

  • Experience in Ad Tech and/or e-commerce
  • Experience with Scrum, XP or other agile methodologies
  • Experience with full stack development
  • Familiarity with AWS cloud services, including serverless computing, data processing, and storage solutions

What the JD emphasized

  • Experience integrating AI/ML models working alongside Data Science team