Senior React Frontend Engineer

Mastercard; Helena (MT); On-site; USD 120,000 - 160,000; Full time

Job summary

Mastercard is seeking a Senior Software Engineer (React JS) to join a global engineering team. You will design, build, and govern reusable UI experiences using modern frameworks while aligning with product goals and security standards.

You will collaborate across global teams, mentor others, and contribute to end-to-end delivery with a focus on performance, reliability and customer journey improvements.

Qualifications

• Proficient in Java, JavaScript and TypeScript with strong API design.
• Experience with secure coding practices and CI/CD tooling.
• Embed quality checks and automated tests in delivery.

Responsibilities

• Own software delivery tasks across code development, test, deployment and release.
• Refactor existing code for performance, readability and quality.
• Participate in agile ceremonies and collaborate with product owners.
• Automate build, deployment, and run aspects of software delivery.
• Mentor junior engineers and contribute to reusable patterns.

Skills

Java

JavaScript

TypeScript

SQL

Education

Bachelor's degree in CS/SE

Tools

Jenkins

Gitflow

AWS/Azure pipelines

Sonar

Checkmarx

Job description

Mastercard is seeking a Senior Software Engineer (React JS) to join a global engineering team. You will design, build, and govern reusable UI experiences using modern frameworks while aligning with product goals and security standards.

You will collaborate across global teams, mentor others, and contribute to end-to-end delivery with a focus on performance, reliability and customer journey improvements.