Principal Software Engineer

Engineering Budapest, Hungary

Our Purpose

We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation and delivers better business results.


● Responsible for the analysis, design, development and delivery of software solutions
● Defines requirements for new applications and customizations, adhering to standards, processes and best practices


● Work on complex enterprise-wide initiatives spanning multiple services/programs and drives resolution
● Work with business/product owners to architect and deliver complex web applications (React, Ruby)

● Drive the architectural design, including dependent services, service interactions, and policies
● Take ownership to improve the customer experience of cutting edge web applications • Simplify and improve the cost/benefit of a function/service/architecture strategy

● Apply judgment and experience to balance trade-offs between competing interests • Venture beyond comfort zone to take on assignments across different areas of Software Engineering
● Take on organization-wide and public speaking engagements and publishes white papers and blogs on relevant and emerging technical topics

● Consult across teams and across organization lines to identify synergies and reuse opportunities

● Participate and contribute to Principal review architecture meetings and drive resolutions to enterprise-wide challenges and regulatory needs
● Write recommendations for job promotions based on an unbiased view of one's accomplishments
● Conduct technical interviews for hiring engineering staff and raising the performance bar
● Identify and raise awareness to Silo-ed behaviors within the organization and teams

Experience Required;

● Progressively grown career with proven design and development experiences in multiple programming languages, Fullstack technologies (e.g., React, TypeScript, GraphQL, Ruby), secure coding standards (e.g., OWASP, CWE, SEI CERT), and vulnerability management.

● Understands Fullstack web development life cycle and how to design performant, scalable, high traffic, world class progressive web applications.
● Has skills to develop and evangelize on reference architecture and run principles to help teams adopt Engineering Principles from the start (poison pill, active/active/active, auto-scaling, self-healing, others)
● Understands use cases for advanced design patterns (e.g., service-to-worker, MVC, API gateway, intercepting filter, dependency injection, lazy loading, all from gang of four) to implement efficient code
● Understands and implements Application Programming Interface (API) standards and cataloging to drive API/service adoption and commercialization
● Has skills to promote and coach teams on take on full stack development and facilitate end-to-end service ownership
● Has skills to engage engineers across Technology organization to promote standard software patterns and reuse of common libraries and services
● Has experience in leading and coaching teams to perform software planning and estimation for large scale complex programs
● Has skills to drive trade-off discussions to set right development capacity based on value drivers (e.g., regulatory, security, new business, market parity, technical debt)
● Has experience in design and execution of automation across multiple business areas and provides guidance on best methods and tools.
● Has an expert understanding of DevOps best practices to guide developers and abstract application development from underlying hosting platforms and infrastructure
● Performance engineering experience to ensure applications are built to scale, run, and perform for varying demands
● Has skills to evaluate practices, metrics, and roles to continually optimize SDLC methodologies and automate processes to improve lead time and quality

● Has skills to perform architecture and cost analysis for internal, hybrid, and public cloud environments
● Has skills to succinctly articulate architecture patterns of complex systems, with business and technical implications, to executive and customer stakeholders.
 Has skills to define and drive advanced chaos and other operational testing practices to test points of failures, monitors, and system behaviors under adverse conditions (e.g., resource spikes, network congestion, component or infrastructure failure)
● Has skills to implement advanced test set ups in production environment (e.g., A/B testing, canary releases, blue-green deployment, feature flags)

COVID-19 Considerations

We value the safety of each member of our community because we know we’re all in this together. In many locations, which may change over time, we’ve implemented a virtual hiring process and continue to interview candidates by video or phone. In addition, in some locations, only individuals who have been fully vaccinated will be permitted inside Mastercard offices until further notice.

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.

To learn more about the experience of working at Ekata visit:

Ekata prides itself on celebrating diversity, inclusivity, and being an equal-opportunity employer.