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- Tasks: Lead the rebuild of trading systems using C# and React.js in a dynamic environment.
- Company: Join a top trading firm known for innovation and impact.
- Benefits: Competitive salary, hybrid work model, and fast interview process.
- Why this job: Make a real difference by working on mission-critical systems with cutting-edge technology.
- Qualifications: Strong background in C#/.NET and React.js, with a proactive mindset.
- Other info: Collaborate closely with the CTO and a talented engineering team.
The predicted salary is between 48000 - 72000 £ per year.
Location: London (Hybrid: 3 onsite / 2 WFH)
Competitive salary on offer. One of the strongest engineering roles in London right now. Are you looking for influence and autonomy? Join a leading trading firm that is rebuilding its entire core platform from the ground up greenfield, modern, high-impact. You'll be working directly with the CTO on mission-critical systems used across trading and structured products.
What You'll Work On:
- Full greenfield rebuild of legacy trading systems
- Modern full-stack engineering: C#/.NET + React.js
- High-performance, multithreaded architectures
- Close collaboration with product, trading, and a 15+ engineering team
What We're Looking For:
- Strong C#/.NET engineering background
- Solid React.js (or modern JS with willingness to grow fast)
- Experience in financial services / trading systems
- Ownership mindset - hands-on, ideas-driven, and proactive
Interview Process (Fast Turnaround):
- CTO Intro
- Live Technical Test
- HR (Culture & Team Fit)
No visa sponsorship on offer, B2B/B2C contractors, or remote-only applicants. This role requires hybrid working in London.
If this sounds like your next challenge, APPLY NOW!
Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training.
Lead Software Engineer (C# / React.js) - Top Trading Firm! in City of London employer: Robert Half
Contact Detail:
Robert Half Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Lead Software Engineer (C# / React.js) - Top Trading Firm! in City of London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, especially those who work at trading firms. A personal referral can make all the difference in getting noticed.
✨Tip Number 2
Prepare for that technical test! Brush up on your C# and React.js skills. We recommend doing some hands-on coding challenges to get you in the zone before the interview.
✨Tip Number 3
Show your ownership mindset during interviews. Be ready to share examples of how you've taken initiative in past projects. We love to see candidates who are proactive and ideas-driven!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you're serious about joining the team.
We think you need these skills to ace Lead Software Engineer (C# / React.js) - Top Trading Firm! in City of London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your C#/.NET and React.js experience. We want to see how your skills align with the greenfield projects we’re working on, so don’t hold back on showcasing relevant projects!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Tell us why you’re excited about this role and how your ownership mindset can contribute to our mission-critical systems. Keep it engaging and personal!
Showcase Your Problem-Solving Skills: In your application, mention specific challenges you've tackled in past roles, especially in high-performance or multithreaded environments. We love seeing how you approach complex problems!
Apply Through Our Website: We encourage you to apply directly through our website for a smoother process. It helps us keep track of your application and ensures you don’t miss out on any updates from us!
How to prepare for a job interview at Robert Half
✨Know Your Tech Stack
Make sure you brush up on your C# and React.js skills before the interview. Be ready to discuss your experience with these technologies in detail, as well as any projects you've worked on that showcase your expertise.
✨Understand the Trading Domain
Since this role is within a trading firm, it’s crucial to have a basic understanding of financial services and trading systems. Familiarise yourself with key concepts and terminology so you can speak confidently about how your skills can contribute to their mission-critical systems.
✨Showcase Your Ownership Mindset
The company is looking for someone with an ownership mindset. Prepare examples from your past work where you took initiative, drove projects forward, or contributed ideas that made a significant impact. This will demonstrate your proactive approach and fit for the role.
✨Prepare for Technical Tests
Expect a live technical test during the interview process. Practice coding challenges related to C# and React.js, and be ready to explain your thought process as you solve problems. This will help you stand out and show your problem-solving skills.
