Backend Software Engineer Java Kotlin AWS

Client Server; London; Hybrid; GBP 72,000 - 85,000; Full time

Job summary

A trading firm in London is seeking a Backend Software Engineer skilled in Java and Kotlin. You'll collaborate on a core trading platform, focusing on code quality and utilizing modern cloud-based technologies. This role offers a salary up to £85k with hybrid working options. Candidates should have a degree in Computer Science and strong Agile experience.

Benefits

Salary to £85k

Bonus

Hybrid working

Learning and career development opportunities

Qualifications

• Strong Java and Kotlin development experience required.
• Experience with Agile processes and TDD.
• Thorough understanding of Computer Science fundamentals.

Responsibilities

• Collaborate with Lead Engineer on core trading platform.
• Design and develop web-based trading platforms.
• Emphasize code quality across the full development lifecycle.

Skills

Java

Kotlin

Agile processes

TDD

OOP

Design Patterns

Data Structures

Algorithms

Scala

React

Education

Degree in Computer Science or similar STEM discipline

Tools

Spring Boot

AWS

Oracle

Redis

Kubernetes

Docker

Linux

Job description

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Backend Software Engineer Java Kotlin AWS, London

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Client:

Client Server

Location:

London, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

8c36bc25559e

Job Views:

9

Posted:

12.08.2025

Expiry Date:

26.09.2025

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Job Description:

Backend Software Engineer / Developer (Java 17 Kotlin AWS) London / WFH to £85k

Are you a technologist Backend Software Engineer with strong Java skills looking to progress your career, working with a modern cloud based infrastructure and a range of technology?

You could be joining a hugely successful and growing commodities trading firm that specialise in trading silver and gold.

As a Backend Software Engineer you'll collaborate with the Lead Engineer on the core trading platform as the company looks to scale the platform and introduce new features. There's an emphasis on code quality; designing and developing highly complex web based trading platforms working across the full development lifecycle.

The technology stack includes Java 17, Kotlin, Spring Boot and AWS amongst others; you'll be encouraged to expand your skillset using the latest technologies and choosing the best tool for the job in a friendly Agile team environment.

WFH Policy:

You'll join the team in the West London office with flexibility to work from home twice a week.

About you:

• You are degree educated, having achieved a 2.1 or above gained in Computer Science (or similar STEM discipline) from a top tier university (e.g. Russel Group) backed by A's at A-level
• You have strong Java and Kotlin development experience
• You have experience with Agile processes and TDD
• You have a thorough understanding of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms
• Other tech in the stack includes Scala, React, Spring, Oracle, Redis, Kubernetes, Docker and Linux so previous exposure to any of these would be beneficial
• You're collaborative with good communication skills

What's in it for you:

As a Backend Software Engineer / Developer you will earn:

• Salary to £85k
• Bonus
• Hybrid working (x3 days in London per week)
• Learning and career development opportunities

Apply now to find out more about this Backend Software Engineer / Developer (Java 17 Kotlin AWS) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.