Software Engineer: Own the Platform & Build Scalable Tools

Egreenservices; Louisville (KY); On-site; USD 66,000 - 96,000; Full time

Job summary

Mastercard in Louisville, KY is hiring a Software Engineer to build the tools developers rely on. You’ll trade 3 years of PHP for a $66,000–$96,000 salary and gain ownership of critical components, mentored by a Mastercard crew that wants you to win.

You’ll fix user-reported issues, improve CI/CD, read Selenium traces, and scale data pipelines with attention to detail, joining a culture that rewards curiosity and results.

Qualifications

• 5+ years of Elasticsearch experience.
• Strong debugging and bug-triage skills.
• Hands-on experience with CI/CD pipelines and tooling.
• Familiarity with Selenium-based workflows and trace analysis.

Responsibilities

• Investigate, diagnose, and fix bugs reported by users and monitoring tools.
• Maintain and improve CI/CD infrastructure across KY engineering teams.
• Read Selenium stack traces, trace bugs to their root cause.
• Scale data pipelines processing millions of events with attention to detail.
• Reverse-engineer the Selenium format Mastercard inherited and undocumented.
• Document the Elasticsearch system to onboard mid-level engineers quickly.
• Write clean, well-tested code that scales with Mastercard's growing user base.

Skills

Elasticsearch

CI/CD

Bug diagnosis

Selenium debugging

Data pipelines

Team collaboration

Ownership mindset

Tools

Selenium

Elasticsearch

Job description

Mastercard in Louisville, KY is hiring a Software Engineer to build the tools developers rely on. You’ll trade 3 years of PHP for a $66,000–$96,000 salary and gain ownership of critical components, mentored by a Mastercard crew that wants you to win.

You’ll fix user-reported issues, improve CI/CD, read Selenium traces, and scale data pipelines with attention to detail, joining a culture that rewards curiosity and results.