Lead Software Engineer (Connex)

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

Lead Software Engineer (Connex)

Overview We are seeking a talented Lead Connex Software Development Engineer to join our engineering organisation supporting UK Critical National Infrastructure (CNI) payment products, based in Pune. This role operates within a globally distributed delivery model, partnering closely with established onshore teams to deliver and maintain high-availability, mission-critical systems. The successful candidate will contribute to the ongoing evolution and stability of key payment platforms within a scaled Agile (SAFe) environment.

Role The Software Engineer will be responsible for:

• Agile Delivery (SAFe Framework) Working within an established Scrum team aligned to SAFe, contributing to sprint planning, execution, and continuous improvement initiatives.

• Distributed Team Collaboration Collaborating closely with onshore engineering teams to deliver features, resolve defects, and ensure seamless integration across the delivery lifecycle.

• Application Development & Maintenance Designing, developing, and maintaining solutions across a multi-technology stack.

• Production Support & Reliability Supporting critical live systems, ensuring performance, resilience, and adherence to enterprise standards and controls.

• Continuous Improvement Contributing to engineering best practices, automation, and process enhancements to improve delivery efficiency and quality.

All About You We are looking for a technically strong and collaborative Software Engineer who thrives in a complex, enterprise-scale environment. Key requirements include:

• Highly experienced in Connex on HP NonStop development background.

• Understanding of financial industry hardware such as HSM’s HP Nonstop and related standards and security requirements including PCI and OWASP.

• Understanding of online payment transaction processing.

• Experience of TCP/IP and communication protocols.

• Strong knowledge of TAL, COBOL, SCOBOL and TACL

• Knowledge of HP Non-Stop protocols, security and utilities

• Strong understanding of financial industry protocols including ISO8583, ISO20022, LIS5, VISA, MasterCard or ATM message protocols.

• Knowledge of some of GoldenGate, Electronic File Transfers, Java, UNIX, Spring, Hibernate, XML.

• Proven development experiences a solid background as a developer across various platforms.

• Proven technical testing experience within Agile environments, particularly with BDD methodologies.

• Be comfortable with regular demonstrations to stakeholders and comfortable with pair programming.

• Exceptional communication skills, with the ability to collaborate effectively within a multidisciplinary team.

• Excellent time management and organisational abilities.

• Strong problem-solving skills and a proactive attitude.

• Genuine passion for testing, development, and technology design across diverse full stack platforms.

• Demonstrated experience in both functional and non-functional automated testing.

Desirable experience:

• Hands-on automation testing expertise using open-source technologies such as Selenium, Cucumber, Gherkin, Spring, etc.

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.