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Job Information

MasterCard Lead Software Engineer Blockchain in Dublin, Ireland

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.

Job Title

Lead Software Engineer Blockchain

Mastercard is looking for brilliant, passionate and innovative Software Engineers to join our Blockchain & Digital Assets group at our Dublin Technology Hub. In this role, you will be a key member of a highly agile engineering team who are playing a critical role in building exciting and innovative products and at global scale.

Our team is built on a foundation of research and development, mining innovation internally, innovating new product lines with emerging technology, managing new products from inception to market validation and engaging strategically with startups to shape the future of commerce with and for our customers. At Mastercard, you will help define the future of commerce globally.


•Successfully leads projects and complex assignments with broad scope and long-term business implications. Create solutions with high level of innovation, cost effectiveness, high quality and faster time to market. Lead day to day system development and maintenance activities of the team to meet service level agreements (SLAs). Collaborate with business and technical partners to identify and scope the opportunities, outline potential value and ROI, identify risks, benefits and constraints. Contribute to the overall strategy and manage complex issues within functional area of expertise.

•Develop overall strategic technical plan and create architecture proposals based on identified solution gaps. As recognised subject matter expert, lead planning, design and implementation of technical solutions. Create solution definition and solution architecture. Assist Management in Business Case Development and Scenario Planning leading to an effective decision making process. Make presentations to the Management, Business Owners and other Stakeholders.

•Assist in examining commercially available and forthcoming industry technologies related to area of expertise. Research on current and upcoming technologies and application appropriate frameworks and provide recommendations to Management. Perform PoCs (Proof of Concept) and help Department in the selection of Technology. Proactively create and maintain solution and technology road maps.

•Partner with Project Managers in implementation of processes per the evolving needs of the team and the solutions. Create detailed cost and time estimates for implementing business solutions, define technical scope and requirements of the project and assist project manager with managing scope during the lifecycle of the project. Identify Quality methodology and define Quality Metrics for the Team. Define and Lead Quality Assurance and Quality Control processes in the department. Assist in vendor selection and RFI/RFP process.

•Lead Quality Assurance and Quality Control processes in the department. Ensure adequate test coverage in Unit Testing, System Testing/Integration Testing and Performance Testing. Perform Quality Inspections and Walkthroughs through out the SDLC including Requirements Review, Architecture Review, Design Review, Code Review and Security Review to ensure compliance with MasterCard standards. Co-ordinate offshore development and manage day to day activities. Support collection and reporting of project and software metrics. Actively look for opportunities to enhance standards and improve process efficiency. Mentor and guide other team members during all phases of the SDLC.

•Lead and guide team through all phases of the SDLC of an application. Successfully lead production incident and problem management, identification of root cause and remediation of the problems. Mentor, coach and assist project team members. Provide Brownbag sessions on new and upcoming technologies, methodologies and frameworks. Provide technical training to the team. Assist with selection of technical resources for the projects.

•Ensure compliance to the defined standards. Actively look for opportunities to modify and enhance standards per the needs of the department. Develop documentation templates, lead and enforce development of documentation through out the development lifecycle of the solution.

•Ensure compliance of Audit Requirements by proactively educating team on Compliance Requirements and Integrating Compliance Requirements in SDLC. Represent team during Compliance Audits.

Must have skills:

•An appreciation & understanding of a positive team culture.

•Fluency in English.

•Excellent communication (verbal and written) with strong collaboration skills.

•Committed team player, driven & highly motivated.

•Ability to embody Mastercard’s Leadership Principles.

•Ability to quickly learn and implement new technologies, frameworks, and tools, support multiple concurrent activities, and interface with external/internal resources, working as a member of a diverse and geographically distributed project team.

•Interested in mentoring and helping grow the skills of the next generation of software developers.

•Show initiative and demonstrate a willingness to take on challenging opportunities.

•Passionate about Software Architecture & Development, code quality and best practices.

Advanced knowledge of the following:

•Software Engineering Concepts and Methodologies. E.g. Agile, TDD, Source Control, CI/CD etc.

•Micro-services/event based architecture and inter process communication protocols.

•Understanding and appreciation of Non Functional Requirements, Quality of Service and Service Level Agreements.

•Object Oriented Programming (Java, C++), Unix Shell Scripting, PL/SQL.

•Spring Framework (Spring Boot in particular).

•API Design & Development (REST, Swagger, OpenAPI specs)

•Application Security including information security principles and realisation, web app security and PCI DSS Compliance

•Optimising code for efficiency, performance and responsiveness

•Cloud native and containerised environments. E.g. Azure, AWS, Docker, K8s.

•Cryptography E.g PKI Infrastructure.

Nice to have:

•Experience with Blockchain & Crypto implementations and concepts. E.g. Ethereum, Smart Contracts/Solidity.

•Professional Certifications . E.g. Java Programming, Cloud Architecture.

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.

Everyone wants easier ways to pay;

we invent them.

Checkout lines are slow;

we speed them along.

Merchants want more sales;

we give them data and insights.

People need financial access;

we connect them.

Corporate purchasing is complicated;

we make it simple.

Commuters are busy;

we speed them on their way.

Governments need greater efficiencies;

we help create them.

Small businesses are virtual;

we give them access to a world of buyers.

Retailers want to fight fraud;

we provide the tools.

Requisition ID: R-167653