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Senior Kotlin/Scala Engineer

ARM | City of London, United Kingdom | Posted July 04, 2026

Position Overview

Senior Scala / Kotlin Engineer
6-12 months
Hybrid - London (2-3 days per week on site)
Paying up to £600 per day (Inside IR35)

Overview
We are supporting a global tier 1 bank on the hire of a Scala / Kotlin Engineer to join a high-performing engineering team delivering business-critical systems.
This is a hands-on engineering role focused on building and evolving distributed backend systems in a high-performance environment.

You will be working on a distributed calculation engine used for complex index-level computations based on quantitative models.
Distributed, manager-worker architecture
Built using Scala and Python components
High requirements around:
o Performance
o Accuracy
o Security

This is a feature development role, not BAU/support, with significant scope to influence system design and evolution.

Role Responsibilities
Design, build, and evolve core distributed services
Deliver high-quality code with...

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