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Mastercard Data & Services

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3 jobs
Mastercard Data & Services
13 hours ago

Lead Software Engineer

NewBe an early applicant EuropeLead
Poland

Hands-on technical lead on Mastercard's Developer Experience team, driving quality strategy and test automation for the Mastercard Developers portal and developer tools. Day to day: building Java automation frameworks, improving CI/CD pipelines, leading root-cause analysis, and mentoring engineers in quality engineering.

API Automation CI/CD Cloud Cloud Native +8 skills
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Mastercard Data & Services
13 hours ago

Software Engineer II

NewBe an early applicant EuropeMiddle
Poland

Mid-level software engineer at Mastercard Data & Services in Warsaw, supporting and building applications through programming, testing, documentation and maintenance of Java backend systems. The role involves automating the SDLC with QA, ensuring security and scalability, and using LLMs/AI responsibly; requires 3-5 years of software engineering experience.

AI Automation Java LLM SDLC
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Mastercard Data & Services
13 hours ago

Lead Software Engineer — Connectivity

NewBe an early applicant EuropeLead
Poland

Lead Software Engineer on Mastercard's Open Finance Europe – Connectivity team in Warsaw, owning end-to-end delivery of secure, scalable API connectivity to financial institutions. Hands-on backend work primarily in C#/.NET on Azure (plus AWS and Java/Spring Boot), covering design, testing, automation, production support, and mentoring.

AI API Api Design Automation AWS +18 skills
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