FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a competitive edge. Our globally distributed engineering teams focus on adaptable technology and open architecture to develop highly sophisticated trading solutions that can automate and scale with your business strategies. At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having fun truly makes FlexTrade a wonderful place to work. 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 As Senior Web Developer, be part of our FlexONE team and own critical product surfaces across our web and mobile applications. You'll work end-to-end across a Scala + Play Framework backend, and a React + AG-Grid front-end, using gRPC for communication with our core product's backend systems. You will lead the technical direction as we build our Web app from an MVP to a comprehensive companion to the desktop application, as well as continuing the evolution of our Mobile app. Responsibilities Design & Build: Deliver robust, maintainable features across the stack (Scala/Play backend, React/AG Grid frontend) Mobile Migration: Define the path from Codename One to a JS compatible framework (likely React Native), including architecture, incremental migration strategy, and performance/UX parity Quality & Reliability: Champion code quality, testing, observability (metrics, logs, tracing), and performance across the stack Team Growth: Mentor engineers, assist with hiring, onboarding, and capability development as the team scales. Collaboration: Partner closely with the Desktop application development team to ensure feature compatibility and parity Tech Stack Backend: Scala, Play Framework, REST/JSON and gRPC Frontend: React, TypeScript, AG-Grid Mobile: Current app in CodenameOne, target migration to React Native (or similar JS-based cross-platform framework) Tooling: Jenkins, GitLab, SonarQube, IntelliJ IDEA Qualifications Experience building & deploying production web apps, with significant experience in React and modern TypeScript Strong experience in Scala (or any JVM language including core Java) Experience building or maintaining cross-platform Mobile Apps Solid grasp of API design, web & mobile architecture, as well as good UX design Clear, pragmatic communicator who collaborates well with both engineers and non-engineers 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.
03/02/2026
Full time
FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a competitive edge. Our globally distributed engineering teams focus on adaptable technology and open architecture to develop highly sophisticated trading solutions that can automate and scale with your business strategies. At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having fun truly makes FlexTrade a wonderful place to work. 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 As Senior Web Developer, be part of our FlexONE team and own critical product surfaces across our web and mobile applications. You'll work end-to-end across a Scala + Play Framework backend, and a React + AG-Grid front-end, using gRPC for communication with our core product's backend systems. You will lead the technical direction as we build our Web app from an MVP to a comprehensive companion to the desktop application, as well as continuing the evolution of our Mobile app. Responsibilities Design & Build: Deliver robust, maintainable features across the stack (Scala/Play backend, React/AG Grid frontend) Mobile Migration: Define the path from Codename One to a JS compatible framework (likely React Native), including architecture, incremental migration strategy, and performance/UX parity Quality & Reliability: Champion code quality, testing, observability (metrics, logs, tracing), and performance across the stack Team Growth: Mentor engineers, assist with hiring, onboarding, and capability development as the team scales. Collaboration: Partner closely with the Desktop application development team to ensure feature compatibility and parity Tech Stack Backend: Scala, Play Framework, REST/JSON and gRPC Frontend: React, TypeScript, AG-Grid Mobile: Current app in CodenameOne, target migration to React Native (or similar JS-based cross-platform framework) Tooling: Jenkins, GitLab, SonarQube, IntelliJ IDEA Qualifications Experience building & deploying production web apps, with significant experience in React and modern TypeScript Strong experience in Scala (or any JVM language including core Java) Experience building or maintaining cross-platform Mobile Apps Solid grasp of API design, web & mobile architecture, as well as good UX design Clear, pragmatic communicator who collaborates well with both engineers and non-engineers 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.
FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a competitive edge. Our globally distributed engineering teams focus on adaptable technology and open architecture to develop highly sophisticated trading solutions that can automate and scale with your business strategies. At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having fun truly makes FlexTrade a wonderful place to work. The FlexFX product is used by some of the largest asset managers and hedge funds in the world. Our team is global and is responsible for the direction and development of this product. Software Engineers are involved in several aspects of a project's lifecycle: from working with buy-side and sell-side stakeholders for analysis & design, to implementing the solution, and working with client services and banks for releases and support. This role represents a great opportunity to join our small, highly talented team. You will have influence on key design and architectural decisions and play an important role in continuing to build future generations of our product. Through dealings with high-profile clients and banks you will gain exposure to the FX industry. Responsibilities Formulate business and workflow requirements into technical solutions Utilise your strong technical skills to code and deliver these solutions Work with teams across the firm to continually improve our product and drive future innovation Support our client services teams in their use of FlexFX Work with banks to onboard them onto our platform Qualifications BSc and/or MSc/PhD in Computer Science (or other STEM major with relevant experience) Professional experience in a technical role Experience in software development, including an understanding of data structures, algorithms, software design and core programming concepts. Key languages include C++, Python, JavaScript Linux experience including shell-scripting Knowledge of relational databases and SQL Desire to learn both the business and technical aspects of the financial capital markets in which FlexTrade operates Understanding of the FIX protocol (not essential) Client facing experience in a professional setting Excellent time management skills, ability to multi-task Ability to communicate confidently and concisely 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.
03/02/2026
Full time
FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a competitive edge. Our globally distributed engineering teams focus on adaptable technology and open architecture to develop highly sophisticated trading solutions that can automate and scale with your business strategies. At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having fun truly makes FlexTrade a wonderful place to work. The FlexFX product is used by some of the largest asset managers and hedge funds in the world. Our team is global and is responsible for the direction and development of this product. Software Engineers are involved in several aspects of a project's lifecycle: from working with buy-side and sell-side stakeholders for analysis & design, to implementing the solution, and working with client services and banks for releases and support. This role represents a great opportunity to join our small, highly talented team. You will have influence on key design and architectural decisions and play an important role in continuing to build future generations of our product. Through dealings with high-profile clients and banks you will gain exposure to the FX industry. Responsibilities Formulate business and workflow requirements into technical solutions Utilise your strong technical skills to code and deliver these solutions Work with teams across the firm to continually improve our product and drive future innovation Support our client services teams in their use of FlexFX Work with banks to onboard them onto our platform Qualifications BSc and/or MSc/PhD in Computer Science (or other STEM major with relevant experience) Professional experience in a technical role Experience in software development, including an understanding of data structures, algorithms, software design and core programming concepts. Key languages include C++, Python, JavaScript Linux experience including shell-scripting Knowledge of relational databases and SQL Desire to learn both the business and technical aspects of the financial capital markets in which FlexTrade operates Understanding of the FIX protocol (not essential) Client facing experience in a professional setting Excellent time management skills, ability to multi-task Ability to communicate confidently and concisely 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.
FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a competitive edge. Our globally distributed engineering teams focus on adaptable technology and open architecture to develop highly sophisticated trading solutions that can automate and scale with your business strategies. At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having fun truly makes FlexTrade a wonderful place to work. 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. Responsibilities 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 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 withJava 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.
03/02/2026
Full time
FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a competitive edge. Our globally distributed engineering teams focus on adaptable technology and open architecture to develop highly sophisticated trading solutions that can automate and scale with your business strategies. At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having fun truly makes FlexTrade a wonderful place to work. 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. Responsibilities 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 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 withJava 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.
A financial technology firm in London is seeking a Senior Web Developer to join their FlexONE team. You will be responsible for delivering features across their web and mobile applications, focusing on the transition from Codename One to a JavaScript-based solution. The ideal candidate will possess strong skills in Scala and React, with experience in building production web apps. This role emphasizes team growth and collaboration with the Desktop application team, within a supportive, agile environment.
03/02/2026
Full time
A financial technology firm in London is seeking a Senior Web Developer to join their FlexONE team. You will be responsible for delivering features across their web and mobile applications, focusing on the transition from Codename One to a JavaScript-based solution. The ideal candidate will possess strong skills in Scala and React, with experience in building production web apps. This role emphasizes team growth and collaboration with the Desktop application team, within a supportive, agile environment.
A leading trading solutions provider in Greater London is seeking a Software Engineer. In this role, you will develop execution and order management solutions and influence key technical decisions. Strong programming skills in C++, Python, or JavaScript are required, alongside the ability to communicate effectively with clients. This opportunity offers exposure to high-profile financial institutions, demanding innovation and collaboration to enhance product development.
02/02/2026
Full time
A leading trading solutions provider in Greater London is seeking a Software Engineer. In this role, you will develop execution and order management solutions and influence key technical decisions. Strong programming skills in C++, Python, or JavaScript are required, alongside the ability to communicate effectively with clients. This opportunity offers exposure to high-profile financial institutions, demanding innovation and collaboration to enhance product development.
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. At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having Fun truly makes FlexTrade a wonderful place to work. About You You will be part of a small close-knit team of engineers that work in an Agile and collaborative fashion to build performant software that sits at the core of FlexTrade's business. Working in close collaboration with client-facing teams you will design and develop solutions for complex customer problems raised and assist teams in moving changes to production. KeyRequirements Professional software development experience Professional experience in Java and/or Scala Experience with JavaScript preferred Experience of contributing to the architecture and design (architecture, design patterns, reliability, and scaling) of new and current systems PreferredQualifications Experience with Postgres and MongoDB Knowledge of Ansible, Redux, Akka and Play would be beneficial Deep understanding of agile development for continuous product development and deployment Knowledge of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations 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.
02/02/2026
Full time
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. At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having Fun truly makes FlexTrade a wonderful place to work. About You You will be part of a small close-knit team of engineers that work in an Agile and collaborative fashion to build performant software that sits at the core of FlexTrade's business. Working in close collaboration with client-facing teams you will design and develop solutions for complex customer problems raised and assist teams in moving changes to production. KeyRequirements Professional software development experience Professional experience in Java and/or Scala Experience with JavaScript preferred Experience of contributing to the architecture and design (architecture, design patterns, reliability, and scaling) of new and current systems PreferredQualifications Experience with Postgres and MongoDB Knowledge of Ansible, Redux, Akka and Play would be beneficial Deep understanding of agile development for continuous product development and deployment Knowledge of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations 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.