The opportunity timeline

• Overview

  Costco is hiring a Full Stack Developer in Rochester, NY.

• Role description

  This internship Full Stack Developer role at Costco suits the engineer who reads the changelog before upgrading and the docs before asking. Bring 4 years of technology experience to a $65,000 - $100,000 role built around ownership, teamwork, and growth.

  Key Responsibilities

  • Refactor the technology module Costco has been afraid to touch
  • Sketch the Coaching architecture, defend it in review, then build the thing
  • Turn Costco's Coaching on-call noise into alerts that actually mean something
  • Design, build, and maintain reliable backend services using PostgreSQL and Microservices
  • Optimize application performance, latency, and resource utilization at scale
  • Collaborate with product and design teams to ship features end to end
  • Containerize applications and manage deployments with Microservices and Laravel

  What You'll Bring

  • At least 5 years of standing behind your own estimates
  • Calm under the oddball-friendly chaos a mid-level role tends to generate
  • The humility to revise strong opinions when the data argues back
  • Storytelling instincts that turn data into a decision
  • Practical command of Java, with bonus points for Laravel
  • A teammate's instinct to unblock others before yourself
  • Comfort working in a fast-paced, bias-to-action environment

  Costco is a performance-driven engineering shop in Rochester, NY where Ansible and Coaching are treated as the same discipline. We give mid-level hires room to fail small so they can later succeed big on technology work.

  We provide a $65,000 - $100,000 salary, full benefits, and dedicated time each week to learn new Microservices and Ansible tools.

  The posting clock reset today, so the Full Stack Developer window is wide open.

  If you can picture yourself owning the Full Stack Developer work here, picture it harder and apply.

• Required skills

  • PostgreSQL
  • Laravel
  • Ansible
  • Java
  • Microservices
  • Accountability
  • Coaching

• Benefits & perks

  • Dental Insurance
  • Four-day work week
  • On-site flu shots and vaccinations
  • Core hours flexibility
  • Compressed work week option
  • International assignment opportunities
  • Payroll advance options
  • Car Allowance
  • Global emergency assistance
  • Paid sabbatical leave
  • Fully remote position

• Apply before 2026-09-15

  Submit your application for this Internship technology position.