Junior Software Developer (Java)

LMAX Broker Ltd.; London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading financial technology firm in London seeks a Software Developer to join a dynamic team. You will work with high-performance Java systems and be involved in various technologies from backend components to data analytics. The role emphasizes collaboration, quality code delivery, and personal development opportunities, including tech talks and conferences. Competitive benefits include 25 days of holiday and comprehensive health coverage.

Benefits

25 days of holiday

Bonus

Pension contribution

Private medical, dental, and vision coverage

Life assurance

Critical illness cover

Wellness contribution program

Qualifications

• Experience in a collaborative development environment.
• Strong coding skills with a focus on performance.
• Ability to learn and adapt technologies quickly.

Responsibilities

• Develop high-performance and reliable software.
• Participate in pair programming with teammates.
• Engage in continuous learning and professional development.

Skills

Passion for software development

Dynamic environment adaptability

Pair programming

Performance analysis

Tools

Java

MySQL

Kafka

Python

Docker

JUnit

Jenkins

Job description

Overview

LMAX is renowned for its high-performance, ultra-low latency (we measure in microseconds) exchange written in core Java. We constantly push technology further than most, especially in our greenfield projects, driving the financial industry in new directions.

What you should expect:

• Collaborative office environment with constant pairing and plenty of social activities
• Work across the stack to solve a problem – You might be working with a performance critical component, integrating a new blockchain, or designing a greenfield cloud based system
• Regular opportunities to learn and develop yourself with internal tech talks, ability to travel to conferences, and dedicated time for your personal development

What you’ll be working with:

• Backend: Distributed, event-driven core Java (90% of the code-base), MySQL, Kafka
• Data analytics: Python & Jupyter notebooks, Parquet, Docker
• Testing: JUnit, JMH, JCStress, Jenkins, Selenium, many in-house tools...
• OS: Linux (Fedora for development, Rocky in production)

The LMAX way is to use the right tool for the job so this is just a flavour of what you’ll be working with, and isn’t a list of requirements!

Responsibilities

Requirements:

• Be passionate about software development. Bad code offends you!
• Work in a dynamic environment enabled by fast feedback; the heart of our ethos
• Pair programming in small teams of developers and testers (who also write code)
• Share knowledge and learn from like-minded peers
• Work across a variety of teams covering a wide range of technologies
• Write performant, reliable, and well tested code – shipping only when it’s ready

Benefits

• 25 days of holiday
• Bonus
• Pension contribution
• Private medical, dental, and vision coverage
• Life assurance
• Critical illness cover
• Wellness contribution program with access to ClassPass