At a Glance
- Tasks: Design and develop high-performance C# / .NET applications for electronic trading systems.
- Company: Join MARGO, a tech-native consultancy in the financial services industry.
- Benefits: Competitive salary, tailored training, and opportunities for career progression.
- Other info: Human-sized consultancy offering close support and challenging engineering assignments.
- Why this job: Work on cutting-edge technology in a dynamic trading environment with real impact.
- Qualifications: Strong C# / .NET experience and familiarity with real-time systems required.
The predicted salary is between 59400 - 72600 £ per year.
- C# / . NET Developer – Front Office, Electronic & Low Latency Trading Systems
- Join MARGO in the UK (London) – Perm & Contracting Opportunities
MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry.
We specialise in complex software engineering environments where performance, robustness and scalability are critical: real-time systems, low-latency architectures, distributed computing and high-throughput data processing.
Joining MARGO means working in demanding Front Office and Trading IT environments, while benefiting from a human-sized structure, close follow‑up and tailor‑made training paths.
Business Context
You will join the Front Office / Trading IT environment of one of our tier-1 investment banking or trading partners.
The teams design and maintain mission-critical C# / .
NET systems supporting electronic trading, real-time risk and analytics platforms across multiple asset classes (Equities, Fixed Income, Commodities, FX, Derivatives).
These systems operate close to trading desks and electronic trading platforms, with strong constraints on performance, reliability and production stability.
- Real-time and event-driven architectures
- Low-latency and high-throughput processing requirements
- Strong production and stability constraints
- Close interaction with trading, quantitative and risk teams
- High engineering standards and short delivery cycles
Role Overview
We are looking for an experienced C# / . NET Developer to work on real-time, electronic trading and risk systems.
The role is primarily technical and engineering-driven, focused on performance, scalability and robustness rather than business analysis.
Candidates are expected to have prior exposure to Front Office, Trading or Risk environments, regardless of the underlying asset class.
Key Responsibilities
- Design & Development
- Design, develop and maintain high-performance C# / . NET applications
- Work on real-time data processing including market data, pricing, orders, analytics and risk calculations
- Implement concurrency and parallel programming patterns adapted to performance-sensitive systems
- Participate in system design, architecture discussions and technical specifications
- Continuously optimise performance including latency, throughput and memory usage
- Engineering & Delivery
- Contribute to the full software lifecycle: design, development, testing and release
- Produce clean, maintainable and well-tested code
- Participate in sprint planning, estimations and technical reviews
- Collaborate closely with developers, quant and infrastructure teams
- Production & Support
- Provide 3rd line support on production systems when required
- Participate in production releases including occasional out-of-hours interventions Contribute to system stability, monitoring and incident prevention
- Technical Environment
- Core Technologies
- C# / . NET (expert level)
- Concurrency and parallel programming
- Asynchronous and multithreaded models
- Memory management and performance profiling
- Distributed and event-driven architectures
- Windows and/or Linux production environments
- Performance monitoring and profiling tools
- Valued Technical Exposure
- Electronic trading or low-latency trading systems
- High-throughput or real-time architectures Messaging middleware (Kafka, Solace or equivalent)
- FIX or other market connectivity protocols
- RESTful or service-oriented architectures
- High Performance Computing (HPC) or grid computing concepts
- Required Experience & Skills
Essential
- Strong experience as a C# / . NET Developer in performance-sensitive environments
- Proven background in real-time or high-throughput systems
- Solid understanding of concurrency, parallelism and memory optimisation
- Experience working in Front Office, Trading or Risk IT environments Strong production mindset and system ownership
- Clear communication and structured problem-solving skills
- Valued (but not restrictive)
- Exposure to electronic trading platforms or low-latency environments
- Experience across one or more asset classes (Equities, Fixed Income, Commodities, FX, Derivatives)
- Familiarity with distributed, grid or event-driven systems
- Interaction with C++ low-latency or HFT-adjacent components
- Why Join MARGO
- Access to multi-asset Front Office, Trading and Electronic Trading environments
- Highly technical and challenging engineering assignments
- Clear positioning between HFT and non-HFT trading systems
- Strong emphasis on skill development and long-term career progression
- Human-sized consultancy with close support and high-quality missions
Please note - We do not offer visa sponsorship for this position.
- Interested? Motivated? Apply on our website or at staff. uk@margo. com
- #J-18808-Ljbffr
C# / .NET Developer – Front Office, Electronic & Low Latency Trading Systems employer: MARGO
MARGO is an exceptional employer for those seeking to make a significant impact in the financial services sector, particularly within the dynamic realm of Fixed Income Algo Trading. With a focus on real-time analytics and a supportive, human-sized consultancy culture, employees benefit from tailored career paths, flexible exposure to various roles, and a collaborative environment that fosters rapid feedback and growth opportunities. Located in London, MARGO offers a unique chance to work closely with traders and production teams, ensuring that your contributions directly influence trading and risk management strategies.
StudySmarter Expert Advice🤫
We think this is how you could land C# / .NET Developer – Front Office, Electronic & Low Latency Trading Systems
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at MARGO or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to MARGO.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like MARGO.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like MARGO that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace C# / .NET Developer – Front Office, Electronic & Low Latency Trading Systems
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at MARGO.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at MARGO and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at MARGO
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If MARGO uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
