Interim Senior Kotlin Engineer - £630 p/d (Inside IR35)

Contract | London (Hybrid) | Investment Banking Technology

We are seeking an experienced Interim Senior Kotlin Engineer to join a high-performing front-office engineering team delivering a next-generation cloud-native issuance platform for global capital markets.

This platform is replacing a legacy bookbuilding system used by investment banking teams worldwide and supports high-volume, real-time workflows during critical trading windows. The engineering environment is collaborative, fast-paced, and strongly aligned to Extreme Programming (XP) principles.

The Role

This is a hands‑on senior engineering position focused on designing, building, and evolving backend services in Kotlin within a modern cloud‑native architecture.

You will work closely with engineers, product specialists, and business stakeholders to deliver resilient, scalable solutions that support real‑ti...