Software Engineer

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

Build the tools that thousands of developers depend on as a Software Engineer working with Git and modern tooling. Trade 3 years of PHP for $66,000 - $96,000 and you also get technology ownership and a Mastercard crew that wants you to win.

Key Responsibilities

• Investigate, diagnose, and fix bugs reported by users and monitoring tools
• Maintain and improve CI/CD infrastructure across KY engineering teams
• Read the Selenium stack traces others skim past, and trace bugs to their root
• Scale data pipelines processing millions of events with Attention to Detail
• Reverse-engineer the slow-to-anger Selenium format Mastercard inherited and never documented
• Document the Elasticsearch system so the next mid-level engineer onboards in days, not weeks
• Pull Accountability telemetry into dashboards Mastercard leaders actually openWrite clean, well-tested code that scales with Mastercard's growing user base

What You'll Bring

• Comfort owning the unglamorous middle of a temporary project
• Solid understanding of technology best practices and industry standards
• The discipline to finish the boring 20% that makes the rest matter
• Strong rapport-building skills and a genuinely positive presence
• 5+ years of Elasticsearch reps, not just Elasticsearch exposure
• A keen eye for quality and consistency in your output
• Roughly 5+ years operating in a similar Software Engineer position

You won't find Mastercard on every billboard, but inside technology circles across KY, this feedback-driven team is well known. Expect a culture where curiosity is rewarded and asking "why" is never seen as a challenge.

Here you earn $66,000 - $96,000 while a dedicated mentor helps you grow from mid-level into ownership, all wrapped in benefits worth keeping.

This posting reflects an open need we are working to close this quarter.