Senior Software Engineer - (Full Stack-Java, React.Js)

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Senior Software Engineer - (Full Stack-Java, React.Js)

Overview
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Are you a passionate software engineer looking to take on a senior contributor role in a fast-paced environment? Do you thrive on solving complex problems and driving technical excellence?
This is a great opportunity to join the team behind Crypto Secure, a powerful risk assessment tool that helps banks gain greater visibility of crypto spend, transaction volumes, and AML risk exposure through a simple, intuitive dashboard.
As a Senior Software Engineer, you will play a pivotal role in shaping the technical direction of the product, ensuring high-quality code, and mentoring engineers. You’ll be hands-on in development while also leading architecture discussions, removing technical roadblocks, and driving best practices across the team.
Role
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Technical Execution & Delivery
- Design, develop, and maintain scalable applications using Java, Spring Boot, React, PostgresDB, Apache NiFi, Hadoop, Snowflake, and other modern technologies.
- Break down high-level requirements into well-defined technical solutions and estimates.
- Drive technical decision-making, ensuring alignment with architecture and security best practices.
- Contribute to technical refinements, provide accurate work estimates, and manage technical dependencies.
- Identify and remove technical roadblocks, ensuring smooth team execution.
- Take ownership of non-functional requirements (performance, security, scalability, etc.).
Mentor & Guide the Team
- Provide technical guidance, mentoring, and coaching to engineers of all levels.
- Conduct code reviews and ensure adherence to best practices.
- Foster a culture of continuous learning and innovation within the team.
Collaborate Across Teams
- Partner with Product Managers and System Architects to align technical and business priorities.
- Work closely with Quality Engineers, Business Analysts, and other stakeholders to ensure well-defined and actionable backlog items.
- Support project managers in identifying and managing technical dependencies.
- Lead demos and contribute to stakeholder presentations.
- Consult on customer incidents and ensure swift resolution of issues.
Champion Engineering Excellence
- Advocate for clean, maintainable, and testable code.
- Stay up to date with industry trends and emerging technologies, continuously improving engineering practices.
- Promote DevOps and CI/CD best practices for efficient and reliable software delivery.
- Drive adoption of accessibility (A11y), internationalization (i18n), and performance best practices.
All About You
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Technical & Engineering Skills
- 8+ years of experience developing enterprise-grade applications.
- Strong full-stack experience with Java, Spring Boot, React, and relational databases (PostgresDB preferred).
- Knowledge of big data technologies like Hadoop, Snowflake, and Apache NiFi.
- Experience designing and building scalable, high-performance systems.
- Proficiency in API development, microservices, and cloud platforms (Azure, AWS, PCF).
- Deep understanding of security, performance, and non-functional requirements.
- Strong debugging, troubleshooting, and problem-solving skills.
Leadership & Collaboration
- Proven experience mentoring and guiding engineers.
- Strong communication skills—able to translate complex technical concepts for non-technical stakeholders.
- Experience working in Agile/Scrum/SAFe environments.
- Ability to manage expectations across product and technology teams, ensuring clarity and alignment.
Mindset & Approach
- Ownership mentality—you take pride in delivering high-quality solutions.
- Detail-oriented but able to see the bigger picture—balancing technical excellence with business needs.
- Passionate about innovation—always looking for better ways to build software.
Why You’ll Love This Role
- Join a talented team and influence the technical direction of a critical security product.
- Work closely with experienced Software Architects to deepen your understanding of software architecture and design principles.
- Work on challenging, high-impact problems at the intersection of crypto risk, finance, and cutting-edge technology.
- Have a direct impact on product success through both hands-on coding and strategic leadership.
- Be part of a company where your ideas matter, and your work makes a difference.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

• Abide by Mastercard’s security policies and practices;

• Ensure the confidentiality and integrity of the information being accessed;

• Report any suspected information security violation or breach, and

• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.