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Principal Engineer, FinTech Platform Architect (Hybrid UK)

Jobleads-UK | Cardiff, United Kingdom | Posted June 12, 2026

Position Overview

A B2B Fintech company in Cardiff is seeking a Principal Engineer to lead technical direction and mentor engineers. This hybrid role involves collaborating with product teams, engaging with stakeholders, and designing robust APIs and platform functionalities. Candidates should have significant experience in large-scale systems, coding languages such as Java, JavaScript, and Kotlin, as well as a strong focus on user experience and mentoring. Competitive benefits package including flexible working and 25 days annual leave.
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