Senior Software Lead - Fraud Rules Engine (Java/Python/Go)

Mastercard; Clondalkin; On-site; EUR 120,000 - 180,000; Full time

Job summary

Mastercard is seeking a Lead Software Engineer to drive modernization of Fraud Rules/Engines and lead cross-functional teams across Java, Python, and Go platforms. You will guide architecture, ensure secure, scalable designs, and mentor a high-performance engineering group.

The role requires 8+ years in software development, experience with microservices, and a track record in large-scale migrations. A strong emphasis on leadership, DevOps practices, and cross-team collaboration is essential.

Qualifications

• 8+ years in software development and microservices architecture.
• Proficiency in Go, Python, and Java.
• Experience with fraud rule engines and large-scale migrations.
• Strong leadership and cross-functional collaboration.

Responsibilities

• Lead modernization of platforms related to Fraud Rules/Engines.
• Collaborate with cross-functional teams to define solutions.
• Ensure designs align with architectural patterns, security, and compliance.
• Mentor development team and drive engineering excellence.
• Hands-on with designing patterns and multi-language implementation.
• Scale global platforms with high throughput and availability.

Skills

Go

Python

Java

Microservices

Distributed systems

APIs

DevOps

Leadership

Security concepts

Database design

Education

Bachelor’s degree in IT/CS

Job description

Mastercard is seeking a Lead Software Engineer to drive modernization of Fraud Rules/Engines and lead cross-functional teams across Java, Python, and Go platforms. You will guide architecture, ensure secure, scalable designs, and mentor a high-performance engineering group.

The role requires 8+ years in software development, experience with microservices, and a track record in large-scale migrations. A strong emphasis on leadership, DevOps practices, and cross-team collaboration is essential.