Lead Software Engineer - Fraud Rules & AI (Java/Python/Go)

Mastercard; Tallaght; On-site; EUR 120,000 - 150,000; Full time

Job summary

Mastercard is seeking a Lead Software Engineer to drive modernization of fraud rules engines and related platforms. You will collaborate with cross-functional teams to define requirements, design scalable solutions, and ensure compliance with security and architectural standards.

The role involves mentoring teams, influencing project scope and estimation, and delivering high-throughput, low-latency services across distributed systems. Strong command of Go, Python, and Java is required.

Qualifications

• Bachelor's degree or extensive work experience in IT/computer science.
• Ability to write high-quality, secure code in Go, Python, Java.

Responsibilities

• Lead modernization of platforms related to Fraud Rules/Engines and migrations.
• Collaborate with cross-functional teams and provide technical thought leadership.
• Ensure designs align with architectural patterns, security, and compliance.

Skills

Go

Python

Java

Fraud rules engines

Gen AI / LLMs

Microservices architecture

DevOps practices

Distributed systems

ACID / NoSQL databases

ALM tools

Education

Bachelor's degree in IT or Computer Science

Extensive work experience

Tools

Relational databases

NoSQL databases

Cloud platforms

Job description

Mastercard is seeking a Lead Software Engineer to drive modernization of fraud rules engines and related platforms. You will collaborate with cross-functional teams to define requirements, design scalable solutions, and ensure compliance with security and architectural standards.

The role involves mentoring teams, influencing project scope and estimation, and delivering high-throughput, low-latency services across distributed systems. Strong command of Go, Python, and Java is required.