Lead Software Engineer (Combination of strong Java + strong Python Developer)

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 (Combination of strong Java + strong Python Developer)

Who is Mastercard
Mastercard is a global technology company in the payments industry. We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible.
Our mission is 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. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.

Organizational Overview
Mastercard’s Reactive Systems Architecture (RSA) team is looking to onboard a lead software engineering to its growing team. RSA allows Application Teams to focus on the functional business requirements, leaving the task of addressing various non-functional requirements to the underlying framework, platform components and infrastructure. The functional business logic layer deals in messages, the delivery of which is an event that invokes some processing on that message. Specific to Mastercard / payment systems these are typically financial messages. The non-functional requirements include, but are not limited to, security, traffic management, infrastructure-independent deployment, scalability, resiliency, high availability, consistent message delivery, delivery auditing, message delivery for failed/absent consumers, application lifecycle management, live/silent mode testing, stateful stream processing, strong consistency, observability, root cause detection and recovery.
For developers we aim to provide a single manifest deployment and provisioning experience. This allows our developers to declaratively provision the shared services they need, wherever they need them (on-prem, cloud, edge) in a self-service manner so they can focus on solving real business problems and delivering exceptional value to our customers. Our customers can consume our services with as frictionless of an experience as possible to enable them to get up and running as fast as possible with the security and performance they need.
All About You
As a Lead Software Engineer, you will be responsible for designing, implementing, and maintaining Messaging systems, Stateful Event Processing systems and to contribute to observability, autonomics and scalability.
As a Lead Observability Engineer, you will be responsible for designing, implementing, and maintaining our observability platform. You'll work closely with cross-functional teams to ensure our systems are transparent, measurable, and reliable. By leveraging your expertise in observability tools and techniques, you will help us gain deep insights into our applications, infrastructure, and user experiences.

Responsibilities:
• Design and develop robust observability solutions to monitor, analyze, and troubleshoot highly distributed systems, especially message streaming systems, stateful even processing systems
• Familiar with OTEL standards and tools.
• Previous experience working with application teams to implement “self-healing” i.e. alerting that triggers automated remediation.
• Implement and configure monitoring, logging, tracing, and alerting systems to ensure comprehensive coverage of our infrastructure and applications.
• Collaborate with software engineers to instrument code for telemetry data collection and analysis.
• Optimize observability tooling and processes to improve system reliability, performance, and scalability.
• Create dashboards, reports, and visualizations to provide actionable insights into system health and performance.
• Investigate and resolve incidents by analyzing telemetry data and identifying root causes.
• Stay current with industry trends and best practices in observability and recommend improvements to our observability strategy and infrastructure.

Qualifications:
• Bachelor's degree in computer science, Engineering, or a related field (or equivalent experience).
• 5-10 years experience as an Observability Engineer or a similar role in a production environment.
• Deep understanding of observability principles, methodologies, and tools such as Prometheus, Grafana, Jaeger, ELK stack, etc.
• Proficiency in programming/scripting languages like Java, Python, Go, or similar for automation and tooling development.
• Strong practical knowledge on messaging systems like Kafka, Flink, MQ
• Strong knowledge of cloud computing platforms (AWS preferred) and container orchestration systems (e.g., Kubernetes).
• Excellent problem-solving skills and the ability to troubleshoot complex issues in distributed systems.
• Strong communication skills and the ability to collaborate effectively with cross-functional teams.

As a Lead Software Engineer, you will be responsible for designing, implementing, and maintaining Messaging systems, Stateful Event Processing systems and to contribute to observability, autonomics and scalability.

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.