At a Glance
- Tasks: Design and develop high-performance C#/.NET applications for real-time trading systems.
- Company: Join MARGO, a tech-native consultancy in the financial services industry.
- Benefits: Enjoy competitive pay, skill development, and a supportive work environment.
- Other info: Great opportunities for career growth and technical challenges await you.
- Why this job: Work on cutting-edge technology in fast-paced trading environments and make a real impact.
- Qualifications: Strong C#/.NET skills and experience in performance-sensitive environments required.
The predicted salary is between 36000 - 60000 £ per year.
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.
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
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
C# / .NET Developer Front Office, Electronic & Low Latency Trading Systems in London employer: MARGO
Margo is an exceptional employer, offering a dynamic work environment in London where technology meets finance. With a strong focus on employee growth, you will have the opportunity to engage directly with traders and quantitative teams, ensuring your contributions have a significant impact. The company promotes a balanced role that combines development and production support, alongside tailored training paths to enhance your skills in a high-stakes, fast-paced setting.
StudySmarter Expert Advice🤫
We think this is how you could land C# / .NET Developer Front Office, Electronic & Low Latency Trading Systems in London
✨Tap into Campus Networks
If you're still in uni, don’t forget to engage with your campus's career services and attend finance-related events. Banks often do presentations and recruitment drives on campus, so put yourself out there and make use of these opportunities to show off your passion for the field.
✨Get Certified
Consider pursuing relevant certifications like the CFA or ACCA while you’re job hunting. They not only beef up your CV but also connect you with professional bodies which can lead to networking opportunities and even job openings in banking and financial services.
✨Connect on Professional Platforms
Join finance-focused groups on platforms like LinkedIn and engage in discussions. This can really help you stand out from the crowd, allowing potential employers to see your knowledge and interest in industry trends. Plus, you might stumble upon job postings shared exclusively within the group.
✨Apply Directly and Be Proactive
Don’t shy away from reaching out directly to firms like MARGO. Use their websites and apply through them, but also consider following up with a polite email to express your enthusiasm. Being proactive can make a huge difference in getting noticed in the competitive financial services sector.
We think you need these skills to ace C# / .NET Developer Front Office, Electronic & Low Latency Trading Systems in London
Some tips for your application 🫡
Show Off Your Numbers!:In the banking and financial services world, quantifiable achievements are key. Make sure your CV highlights your grades in relevant subjects, any financial certifications you hold, and specific projects where you've delivered measurable results. Employers love to see how your skills translate into real-world success.
Tailor Your Cover Letter to the Role:When applying for a full-time position, your cover letter should make a direct connection between your experience and the job description. Don't just state your enthusiasm for finance—dive into how your background in banking or financial analysis sets you apart. Let your passion shine through while being specific about what you can bring to MARGO.
Include Relevant Financial Software Experience:If you've worked with financial modelling tools or software like Excel, SAP, or specific analytical tools during your studies or internships, bring that up! Highlighting your proficiency can really make your application pop and show you're ready to hit the ground running in a full-time role.
Research and Reflect:Before hitting that 'apply' button on MARGO's website, do a little digging. Look up their recent projects, values, and culture. Reflecting their ethos in your application can make a huge difference and show you’re genuinely interested in being part of the team!
How to prepare for a job interview at MARGO
✨Brush Up on Financial Analysis Skills
Make sure you're well-versed in financial concepts and analytical techniques relevant to banking and financial services. Get comfortable with tools like Excel for modelling or financial forecasting, as technical questions in this area are common during interviews with MARGO.
✨Prepare for Case Studies
Expect to tackle case studies that demonstrate your problem-solving skills in real-world banking scenarios. Familiarise yourself with the types of problems you might face—think risk assessments or investment evaluations—and be ready to articulate your thought process clearly.
✨Show Your Passion for Finance
Since this is a full-time position, employers at MARGO will be keen to see your genuine interest in finance. Be prepared to discuss recent industry trends or news articles that excite you, showcasing your enthusiasm and engagement with the field.
✨Network with Industry Professionals
Before your interview, reach out to current or former MARGO employees on platforms like LinkedIn. They'll offer unique insights into the company's culture and the interview process, which can give us a delightful edge in showcasing a good fit for the team.
