Corpay, Inc.
Posted Monday, November 17, 2025 at 12:00 AM
What We Need
How We Work
As a Senior BackEnd Engineer, you will be expected to work in an office environment. Corpay will set you up for success by providing:
Assigned workspace in the Brentwood office
Formal, hands-on training
Role Responsibilities
The responsibilities of the role will include:
Owning and maintaining the legacy Node.js (Express.js) stack, while stabilizing integrations and preparing APIs for modernization.
Debugging, patching, and refactoring backend services running on AWS EC2 and PM2.
Refactoring monolithic backend code into maintainable, modular components.
Designing, implementing, and optimizing RESTful APIs using Express.js.
Migrating hardcoded configurations to AWS Secrets Manager and AWS Systems Manager Parameter Store (SSM).
Implementing observability through structured logging (CloudWatch, X-Ray, Splunk, Dynatrace).
Optimizing MySQL queries, stored procedures, and schema performance.
Supporting queue-based batch processes, cron jobs, and month-end reporting workloads.
Collaborating with frontend, database, and DevOps engineers to ensure consistent architecture and secure integrations.
Partnering with the modernization team to document APIs and ensure migration readiness.
Managing queue scaling across various configurations to ensure reliability and memory efficiency.
Qualifications
& Skills 5+ years of direct, hands-on Node.js (Express.js) backend development. Proven experience debugging and profiling Node.js services using PM2 and Node Inspector. Strong understanding of RESTful API lifecycle, authentication, and error handling. S3 (uploads, signed URLs, static hosting) EC2 and CloudWatch (monitoring, uptime) MySQL expertise: query optimization, schema familiarity, stored procedures. Experience with Linux scripting, cron, and maintenance of legacy codebases. Strong understanding of logging, observability, and performance tuning in production systems. Preferred: Familiarity with AWS Cognito, JWTs, and multi-environment authentication flows. Experience with ExcelJS and other Excel/reporting libraries. Background in financial or accounting systems. Experience refactoring large monoliths incrementally. Exposure to Angular or other frontend frameworks (for end-to-end debugging or integration support). Medical, Dental & Vision benefits available the 1 st month after hire Automatic enrollment into our 401k plan (subject to eligibility requirements) Virtual fitness classes offered company-wide Robust PTO offerings including: major holidays, vacation, sick, personal, & volunteer time Employee discounts with major providers (i.e. wireless, gym, car rental, etc.) Philanthropic support with both local and national organizations Fun culture with company-wide contests and prizes Corpay is an Equal Opportunity Employer. Corpay provides equal employment opportunities to all employees and applicants without regard to race, color, gender (including pregnancy), religion, national origin, ancestry, disability, age, sexual orientation, gender identity or expression, marital status, language, ancestry, genetic information, veteran and/or military status or any other group status protected by federal or local law.If you require reasonable accommodation for the application and/or interview process, please notify a representative of the Human Resources Department. For more information about our commitment to equal employment opportunity and pay transparency, please click the following links: EEOC and Pay Transparency .
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& Skills 5+ years of direct, hands-on Node.js (Express.js) backend development. Proven experience debugging and profiling Node.js services using PM2 and Node Inspector. Strong understanding of RESTful API lifecycle, authentication, and error handling. S3 (uploads, signed URLs, static hosting) EC2 and CloudWatch (monitoring, uptime) MySQL expertise: query optimization, schema familiarity, stored procedures. Experience with Linux scripting, cron, and maintenance of legacy codebases. Strong understanding of logging, observability, and performance tuning in production systems. Preferred: Familiarity with AWS Cognito, JWTs, and multi-environment authentication flows. Experience with ExcelJS and other Excel/reporting libraries. Background in financial or accounting systems. Experience refactoring large monoliths incrementally. Exposure to Angular or other frontend frameworks (for end-to-end debugging or integration support). Medical, Dental & Vision benefits available the 1 st month after hire Automatic enrollment into our 401k plan (subject to eligibility requirements) Virtual fitness classes offered company-wide Robust PTO offerings including: major holidays, vacation, sick, personal, & volunteer time Employee discounts with major providers (i.e. wireless, gym, car rental, etc.) Philanthropic support with both local and national organizations Fun culture with company-wide contests and prizes Corpay is an Equal Opportunity Employer. Corpay provides equal employment opportunities to all employees and applicants without regard to race, color, gender (including pregnancy), religion, national origin, ancestry, disability, age, sexual orientation, gender identity or expression, marital status, language, ancestry, genetic information, veteran and/or military status or any other group status protected by federal or local law.If you require reasonable accommodation for the application and/or interview process, please notify a representative of the Human Resources Department. For more information about our commitment to equal employment opportunity and pay transparency, please click the following links: EEOC and Pay Transparency .
#J-18808-Ljbffr