Interim Software Engineer, Kotlin £800 p/d

1st Executive

Full-time Other-General
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Location
london, england, United-Kingdom
Posted
June 30, 2026

Job Description

Interim Software Engineer – Kotlin

Rate: £800 p/d (Inside IR35)

Duration: 6-month Contract

Location: London (Hybrid)

Client: Investment Banking Technology

An Interim Senior Software 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, scalabl...