The opportunity timeline

• Overview

  Marathon Petroleum is hiring a Process Engineer in Joliet, IL.

• Role description

  Join Marathon Petroleum as a mid-level Process Engineer and spend your days turning metrics-driven requirements into systems that quietly do their job. Own your projects, earn $86,000 - $124,000, and grow with a team that turns 4 years of PostgreSQL into real results.

  Key Responsibilities

  • Track and report on key performance metrics for technology services
  • Build the quietly-excellent REST API feature that wins back the IL accounts Marathon Petroleum lost
  • Respond to on-call rotations and participate in incident postmortems
  • Design, build, and maintain reliable backend services using Kafka and Swift
  • Build the Kafka tooling that makes every other Joliet engineer faster
  • Bridge Kafka and Flask so the two halves of Marathon Petroleum's platform finally talk
  • Design Swift APIs other Joliet, IL teams will still thank you for next year
  • Translate PostgreSQL metrics into the one chart Marathon Petroleum leadership checks each morning

  What You'll Bring

  • 3 years that taught you which corners can be cut
  • Real proficiency with REST API, plus willingness to learn PostgreSQL fast
  • Familiarity with the rhythms of a trust-based hybrid team
  • A communicator who writes the meeting recap nobody asked for but everyone reads

  At its core, Marathon Petroleum is a people-first bet that Joliet, IL can out-build anyone when it comes to REST API. At Marathon Petroleum we hire people we can trust with real decisions and then give them the room to make them.

  At Marathon Petroleum the paycheck opens at $86,000 - $124,000 and the perks, from learning stipends to flexible Joliet, IL hours, only widen from there.

  Updated on the spot, the Marathon Petroleum hiring team is reviewing in real time.

  Send the resume, skip the cover-letter cliches, and let your Unit Testing do the talking.

• Required skills

  • Django
  • Flask
  • Swift
  • REST API
  • Unit Testing
  • PostgreSQL
  • Kafka
  • Change Management
  • Adaptability

• Benefits & perks

  • Equipment and hardware allowance
  • Referral Bonuses
  • Snacks and Beverages
  • LinkedIn Learning access
  • Corporate Rates
  • Structured 30-60-90 day plan
  • Domestic partner benefits

• Apply before 2026-08-05

  Submit your application for this Hybrid technology position.