Senior Kotlin Developer

Senior Kotlin Developer (XP, GCP) – Investment Banking – London/Hybrid

Duration: 6 months

Start: ASAP

My client is looking for an experienced Senior Kotlin engineer to support and extend a cloud-hosted platform used for bookbuilding issuances within Investment Banking Capital Markets. You will join a high-calibre London-based front office engineering team working on a next-generation issuance platform replacing a legacy bookbuilding system.

This is a hands‑on engineering role with a strong emphasis on Extreme Programming (XP) practices, including mob programming, test‑driven development, and continuous refactoring. Engineers are expected to contribute across development, integration, and production support, collaborating closely to maintain high standards of code quality, system reliability, and performance.

• Strong commercial experience building backend services using Kotlin
• Experience with event‑sourced an...