Performance Engineer

Energy Innovation Corp; Elgin (IL); On-site; USD 85,000 - 118,000; Full time

Job summary

Grant Thornton in Elgin, IL is seeking a Performance Engineer to own unit testing initiatives and make GraphQL performant enough that users do not notice. You will take full ownership of testing across the stack, applying MySQL expertise and CI/CD guardrails to deliver robust, scalable services.

This contract role emphasizes collaboration with a strong engineering team, code reviews to raise quality, and mentoring peers while expanding testing coverage and reliability in a mid-sized tech

Qualifications

• Must have a proven track record in unit testing initiatives.
• Demonstrated ability to translate tech requirements into testing guardrails.
• Strong communicator with experience presenting to leadership.
• Commitment to improving processes and technical excellence.
• Ability to collaborate across teams and mentor peers.

Responsibilities

• Own unit testing initiatives end-to-end.
• Apply MySQL and unit testing to solve engineering challenges.
• Stitch events into the testing pipeline feeding technology reports.
• Translate compliance rules into unit testing guardrails baked into the build.
• Guard code quality through reviews and pair-programming across teams.
• Architect fault-tolerant distributed systems leveraging Express.js.
• Question fast-moving GraphQL patterns and propose cleaner approaches.
• Collaborate with engineers in Elgin, IL on testing edge cases.

Skills

Unit testing

GraphQL performance

Distributed systems design

CI/CD practices

Tools

MySQL

Express.js

Job description

We're hiring a Performance Engineer for the unglamorous, essential work of making GraphQL fast enough that nobody notices it at all. You'll take full ownership of Unit Testing initiatives, work alongside a strong team, and earn $85,000 - $118,000 in this contract role.

Key Responsibilities

• Slice the heads-down-and-happy technology monolith into Empathy services Elgin, IL can deploy alone
• Apply MySQL and Unit Testing to solve craft-obsessed engineering challenges
• Stitch Conflict Resolution events into the Unit Testing pipeline feeding Grant Thornton's technology reports
• Translate technology compliance rules into Unit Testing guardrails baked into the build
• Guard the Express.js codebase quality through reviews that teach as much as they catch
• Architect fault-tolerant distributed systems leveraging Empathy and Express.js
• Question the fast-moving GraphQL pattern everyone copied and propose something cleaner
• Pair-program tricky Unit Testing edge cases with engineers across Elgin, IL

What You'll Bring

• The humility to revise strong opinions when the data argues back
• Self-direction that survives a quiet Slack channel
• A portfolio that speaks louder than any line on your resume
• Confident communicator across email, calls, and in-person meetings
• Demonstrated comfort presenting to mid-level leadership
• Reliable, accountable, and committed to following through
• A history of leaving technology processes better than you found them

Grant Thornton is a deeply-curious, customer-obsessed technology company proudly built in Elgin, IL. A mid-level engineer and a director debate CI/CD ideas on equal footing in our Elgin standups.

Start strong at $85,000 - $118,000, grow with a mentor, settle into benefits, and enjoy flexibility that finally fits Elgin.

Right now in Elgin, the Performance Engineer chair sits open and the door is unlocked.