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# Senior Software Engineer

- **Company:** Mastercard
- **Location:** Arlington, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Automation of Tests, Microsoft Azure, Cloud Computing, Cloud Computing Security, Code Review, Continuous Integration, Distributed Data Store, Python (Programming Language), Node.Js, Scrum Methodology, Systems Development Life Cycle, Reliability Engineering, SONAR (Symantec), Strategies of Testing, TypeScript, Cloud Platform System, ReactJS, Spring-boot, Event Driven Architecture, Containerization, AngularJS, Git Flow, Integration Tests, Checkmarx, Microservices
- **Published:** August 7, 2026
- **Apply:** https://us.experteer.com/career/view-jobs/senior-software-engineer-arlington-va-usa-58829070

## About the Role

deliver monitoring, and incident response * Apply secure coding practices and comply with security standards * Collaborate with Product, Architecture, Site Reliability, and Security teams * Own production health and drive reliability improvements Tasks * Proficiency with Python/TypeScript agentic frameworks * Strong experience with modern web stacks (Angular, React, JavaScript/TypeScript, Node.js) and Java backend * Spring Boot familiarity * Cloud experience (AWS/Azure) and distributed data stores * Security-focused coding and use of analysis tools (Sonar, Checkmarx) * Git-based workflows and peer code reviews * Unit, service, and integration testing expertise * Experience with CI/CD and containerized deployments * Knowledge of SDLC methodologies (Scrum, Kanban, SAFe) and observability practices * Bachelor's degree or equivalent practical experience Key requirements * health insurance * dental and vision coverage * 401k with company match * paid parental leave * vacation and aaaaaa

* days * paid holidays and sick time

## Description

Experteer Overview As a Senior Software Engineer at Mastercard, you will own and shape the design of scalable, secure cloud-native software for the ADUEX team serving SMEs. You'll influence architecture, lead implementation and quality, and drive production reliability across full software lifecycles. You'll work with cross-functional partners to deliver high-performance, secure solutions at scale. This role offers impact through building modern, event-driven and microservices-based systems in a global payments context. Compensation / Benefits * Design scalable, secure software and translate requirements into system designs * Influence architecture decisions and define patterns for APIs, event-driven systems, and cloud-native platforms * Design, build, test, deploy, and maintain software components and services * Lead code reviews and coach peers * Analyze and optimize performance, scalability, and reliability * Define testing strategies and promote test automation * Ensure observability, monitoring, and incident response * Apply secure coding practices and comply with security standards * Collaborate with Product, Architecture, Site Reliability, and Security teams * Own production health and drive reliability improvements Tasks * Proficiency with Python/TypeScript agentic frameworks * Strong experience with modern web stacks (Angular, React, JavaScript/TypeScript, Node.js) and Java backend * Spring Boot familiarity * Cloud experience (AWS/Azure) and distributed data stores * Security-focused coding and use of analysis tools (Sonar, Checkmarx) * Git-based workflows and peer code reviews * Unit, service, and integration testing expertise * Experience with CI/CD and containerized deployments * Knowledge of SDLC methodologies (Scrum, Kanban, SAFe) and observability practices * Bachelor's degree or equivalent practical experience Key requirements * health insurance * dental and vision coverage * 401k with company match * paid parental leave * vacation and personal days * paid holidays and sick time


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