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- Tasks: Design and build robust features across web and mobile applications using Scala and React.
- Company: Join FlexTrade, a leader in innovative trading solutions with a collaborative culture.
- Benefits: Competitive salary, flexible work environment, and opportunities for professional growth.
- Why this job: Make an impact by developing cutting-edge technology in a dynamic team.
- Qualifications: Deep Full Stack expertise with experience in Scala, React, and mobile app development.
- Other info: Mentorship opportunities and a focus on continuous learning in a fun workplace.
The predicted salary is between 36000 - 60000 £ per year.
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 every 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: 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
Job requirements:
- Deep Full Stack expertise
- 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)
- Mobile Capability: Experience building or maintaining cross-platform Mobile Apps
- Architecture & Design: Solid grasp of API design, web & mobile architecture, as well as good UX design.
- Communication: Clear, pragmatic communicator who collaborates well with both engineers and non-engineers.
Full Stack Developer in City of London employer: FlexTrade
Contact Detail:
FlexTrade Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Full Stack Developer in City of London
✨Tip Number 1
Network like a pro! Reach out to current or former employees at FlexTrade on LinkedIn. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.
✨Tip Number 2
Show off your skills! Prepare a portfolio showcasing your best projects, especially those involving Scala, React, or mobile apps. This will help us see your expertise in action during interviews.
✨Tip Number 3
Practice makes perfect! Brush up on your coding skills and be ready for technical interviews. Use platforms like LeetCode or HackerRank to solve problems that might come up.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the FlexTrade team.
We think you need these skills to ace Full Stack Developer in City of London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Full Stack Developer role. Highlight your experience with Scala, React, and any mobile app development you've done. We want to see how your skills align with what we're looking for!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Share your passion for building robust applications and how you can contribute to our FlexONE team. Let us know why you're excited about this opportunity at FlexTrade.
Showcase Your Projects: If you've worked on any relevant projects, make sure to include them in your application. Whether it's a personal project or something from a previous job, we love seeing real examples of your work and how you tackle challenges.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy – just follow the prompts!
How to prepare for a job interview at FlexTrade
✨Know Your Tech Stack
Make sure you’re well-versed in Scala, React, and TypeScript. Brush up on your knowledge of the Play Framework and gRPC as well. Being able to discuss your experience with these technologies confidently will show that you’re a great fit for the role.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in previous projects, especially those involving full stack development. Highlight how you approached these problems and the solutions you implemented, particularly in agile environments.
✨Understand the Company Culture
FlexTrade values collaboration, integrity, and continuous improvement. Familiarise yourself with their mission and values, and think about how your personal values align with theirs. This will help you demonstrate that you’re not just a technical fit, but also a cultural one.
✨Ask Insightful Questions
Prepare thoughtful questions about the FlexONE platform, the team dynamics, and future projects. This shows your genuine interest in the role and helps you assess if the company is the right fit for you too.
