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Associate Software Developer (Java/Scala)

  • London, England, United Kingdom
Engineering & Development

Job description

About Us:

FlexTrade Systems is a global leader in high performance multi-asset execution management and order management systems for equities, fixed income, foreign exchange, futures, and options. A pioneer in the field, FlexTrade is internationally recognized for introducing FlexTRADER®, the world’s first broker-neutral, execution management trading system, which allows clients to completely control and customize their execution workflows through a comprehensive ability to search/access liquidity while maintaining the confidentiality of their trading strategies.

The Team

We are looking for an amazing developer to join our team building FlexTrade’s OEMS platform, FlexONE, which is our state-of-the-art, fully integrated Order Management System and Execution Management System. This system was built from the ground up starting in 2013 and is written entirely in Scala.

The FlexONE team is split between our Milwaukee office, where the product was first developed, and our London office, which is now predominantly responsible for development of the UI for the application.

The London team is an experienced group of Java and Scala developers, with a deep understanding of UI and UX design. We deliver our software using agile methodologies, and we encourage best practices such as TDD, code reviews and pair programming for knowledge sharing and learning. Our team owns all aspects of the features they work on, from designing solutions to meet customer or product requirements, through implementation, QA and delivery. Each team member works on every part of the system.

About You

FlexTrade are seeking a skilled Scala or Java developer to join the FlexONE London team. The successful candidate will be someone with a passion for development who can complement what we do and bring interesting ideas and approaches. We believe that a great software engineer can pick up any technologies they need as they go, but some experience with the libraries and tools we use would be an advantage to any candidate.


  • Work within the team’s agile Kanban process to develop new features and bug fixes
  • Discuss feature requirements with account managers and design suitable solutions
  • Implement new features from the product roadmap
  • Implement performance enhancements in the core product
  • Design and build user interface components using Swing, considering good UX
  • Build unit tests using JUnit and Mockito
  • Support CI/CD processes using Docker and Jenkins

Job requirements

Must have

  • Proficiency with Java and/or Scala software development
  • Experience with building interactive UIs and/or applications
  • Excellent knowledge of both object-oriented and functional programming concepts
  • Excellent communication skills to articulate ideas, problems and solutions
  • Motivation and determination to learn and grow

Nice to have

  • Experience with Java Swing
  • Experience with React
  • Experience of the Akka framework
  • Experience with gRPC
  • Experience with Financial Services

FlexTrade Systems, Inc. is an equal opportunity employer and makes employment decisions without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or any other status protected by law.

FlexTrade UK Ltd. conducts a pre-employment screening which consists of a Criminal History, Background and Credit Check for successful candidates.


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