Senior Kotlin Engineer – XP, Mob Work, GCP Platform

Salt; Greater London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

Salt is looking for a Senior Kotlin Developer to work on a cloud-hosted platform in Investment Banking. The role emphasizes Extreme Programming practices and involves supporting a high-caliber front office engineering team in London.

As a hands-on engineer, you will help replace a legacy bookbuilding system while ensuring high standards of code quality and system reliability. Ideal candidates will have strong Kotlin experience and cloud expertise, especially with GCP.

Qualifications

• Strong commercial experience building backend services using Kotlin.
• Experience with event-sourced and event-driven architectures.
• Deep familiarity with XP practices and clean code principles.

Responsibilities

• Work primarily in mobs, sharing ownership of design and code.
• Build, test, and evolve services focusing on clarity, simplicity, and maintainability.
• Support the platform in production, improving system design and resilience.

Skills

Kotlin

XP practices

GCP

CI/CD

Tools

GKE

Cloud Run

Cloud SQL

Job description

Salt is looking for a Senior Kotlin Developer to work on a cloud-hosted platform in Investment Banking. The role emphasizes Extreme Programming practices and involves supporting a high-caliber front office engineering team in London.

As a hands-on engineer, you will help replace a legacy bookbuilding system while ensuring high standards of code quality and system reliability. Ideal candidates will have strong Kotlin experience and cloud expertise, especially with GCP.