Senior C# / .NET Developer – Front Office, FX & Orchestrade Systems

MARGO GroupLondon

On-site Full-time

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Experience Level

Senior

Qualifications

Qualifications:Proven experience in C# and . NET developmentStrong understanding of FX trading systems and productsExperience with Orchestrade or similar vendor platforms is a plusAbility to work collaboratively in a fast-paced, agile environmentExcellent problem-solving skills and attention to detailStrong communication skills

About the job

Join MARGO in the UK (London)

MARGO is a technology-driven consultancy providing top-tier IT solutions to the financial services sector. Our focus is on sophisticated software engineering, emphasizing performance, reliability, and scalability. Our expertise lies in real-time systems, low-latency architectures, and extensive data processing capabilities.

By becoming a part of MARGO, you will engage in challenging Front Office and Trading IT environments, all while enjoying the benefits of a compact organization that prioritizes personalized support and customized training programs.

Business Context

You will integrate into the FX Risk IT ecosystem of a prestigious tier-1 investment bank. Your team will be responsible for designing and maintaining essential systems that support FX Cash (Forward, Swap, NDF) and FX Derivatives (Options, Carbon Offsets).

Our environment is centered around the Orchestrade platform and necessitates close collaboration with traders, quants, and risk managers to create optimal trading solutions.

Role Overview

We are seeking a Senior C# / . NET Developer who possesses a robust technical background to spearhead the development and integration of FX trading solutions. While familiarity with the Orchestrade platform is a significant advantage, we primarily value a skilled engineer capable of mastering complex vendor APIs and providing technical guidance in a dynamic, agile environment.

Key Responsibilities

Design & Development

- System Evolution: Assess, design, and develop high-performance C# solutions tailored for FX cash and derivative products.

- Orchestrade Integration: Create code for the seamless integration of Orchestrade with associated internal systems, including Sigma, Barracuda, and Deal Hub.

- Architecture: Consult on optimal architectural strategies for integrating vendor products with service-oriented and microservices frameworks.

- Data & Middleware:...

About MARGO Group

MARGO is a tech-centric consultancy focused on delivering exceptional IT services to the financial industry. We excel in complex software engineering, ensuring that our solutions are high-performance, reliable, and scalable for today's demanding financial environments.

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C# / .NET Developer for Front Office Electronic Trading Systems

MARGO Group

Full-time|On-site|London

C# / .NET Developer for Front Office Electronic Trading SystemsJoin MARGO in the UK (London) – Permanent and Contracting OpportunitiesMARGO is a technology-driven consultancy that provides exceptional IT expertise to the financial services sector.We specialize in intricate software engineering environments where performance, reliability, and scalability are …

Jan 12, 2026

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Front Office IT Support Engineer - Trading & Electronic Trading Systems

MARGO Group

Full-time|On-site|London

Front Office IT Support Engineer – Trading & Electronic Trading SystemsJoin MARGO in the UK (London)MARGO is a technology-driven consultancy that provides high-value IT expertise to the financial services sector.We thrive in complex Front Office environments where technology, trading activity, and operational constraints converge. Our team supports and manages mission-critical trading systems utilized by Front Office, trading, and risk teams, ensuring responsiveness, reliability, and a deep technical understanding.Being part of MARGO means engaging in challenging Front Office environments while enjoying a close-knit structure, personalized support, and customized training pathways.Business ContextIn this role, you will be integral to Front Office IT Support and Trading Technology, providing support for live trading operations across various asset classes.Our systems are production-critical, operate in real-time, and demand a strong emphasis on stability, performance, and incident management. You will collaborate closely with traders, sales, risk, development, and infrastructure teams.Role OverviewWe are seeking a Front Office IT Support Engineer to oversee, enhance, and maintain trading and electronic trading systems.This position extends beyond mere reactive support; it requires proactive ownership of Front Office platforms, involvement in change initiatives, and hands-on troubleshooting of production issues in real-time settings.Ideal candidates will have a strong passion for trading systems, production environments, and a desire for progressive technical challenges.Key ResponsibilitiesProduction Support & Operations· Deliver Front Office IT support in live trading environments.· Ensure the availability, stability, and performance of trading systems during market hours.· Collaborate with various teams to identify and resolve issues efficiently.

Jan 12, 2026

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Java Developer for Front Office and Trading Systems

Margo Group

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Java Developer for Front Office and Trading SystemsExciting Opportunities with MARGO in London – Both Permanent and Contract Roles Available! MARGO is a cutting-edge consultancy specializing in providing top-tier IT solutions tailored for the financial services industry. We excel in complex software engineering settings where performance, reliability, and scalability are of utmost importance: think low-latency systems, real-time data processing, distributed architectures, and handling high-volume data flows.Joining MARGO means immersing yourself in challenging Front Office and Risk IT environments, while enjoying a supportive structure, personalized training paths, and close guidance.Business ContextYou will be part of the Front Office / Trading IT team at one of our prestigious tier-1 investment banking clients.Your role will involve designing and maintaining mission-critical Java applications that facilitate electronic trading across various asset classes (including Equities, Fixed Income, Commodities, FX, and Derivatives).The work environment is characterized by:· Real-time and event-driven architecture· High performance and low-latency demands· Close collaboration with trading, quantitative, and risk teams· Rapid delivery cycles with exceptional engineering standardsRole OverviewWe are seeking a skilled Java Developer to contribute to real-time trading and risk management systems.

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Senior C# / .NET Developer – Front Office, FX & Orchestrade Systems

MARGO Group

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Join MARGO in the UK (London)MARGO is a technology-driven consultancy providing top-tier IT solutions to the financial services sector. Our focus is on sophisticated software engineering, emphasizing performance, reliability, and scalability. Our expertise lies in real-time systems, low-latency architectures, and extensive data processing capabilities.By becoming a part of MARGO, you will engage in challenging Front Office and Trading IT environments, all while enjoying the benefits of a compact organization that prioritizes personalized support and customized training programs.Business ContextYou will integrate into the FX Risk IT ecosystem of a prestigious tier-1 investment bank. Your team will be responsible for designing and maintaining essential systems that support FX Cash (Forward, Swap, NDF) and FX Derivatives (Options, Carbon Offsets).Our environment is centered around the Orchestrade platform and necessitates close collaboration with traders, quants, and risk managers to create optimal trading solutions.Role OverviewWe are seeking a Senior C# / .NET Developer who possesses a robust technical background to spearhead the development and integration of FX trading solutions. While familiarity with the Orchestrade platform is a significant advantage, we primarily value a skilled engineer capable of mastering complex vendor APIs and providing technical guidance in a dynamic, agile environment.Key ResponsibilitiesDesign & Development- System Evolution: Assess, design, and develop high-performance C# solutions tailored for FX cash and derivative products.- Orchestrade Integration: Create code for the seamless integration of Orchestrade with associated internal systems, including Sigma, Barracuda, and Deal Hub.- Architecture: Consult on optimal architectural strategies for integrating vendor products with service-oriented and microservices frameworks.- Data & Middleware:...

Jan 30, 2026

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C++ Trading Platform Developer

Wintermute Trading

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About WintermuteWintermute is a pioneering technology firm and one of the largest algorithmic trading companies specializing in digital assets. We excel at providing liquidity across a multitude of cryptocurrency exchanges and trading platforms, offering a wide array of OTC trading solutions, while also bolstering high-profile blockchain initiatives and traditional financial institutions venturing into the crypto space. Additionally, Wintermute operates a ventures arm that invests in promising early-stage DeFi projects.Since our inception in 2017, Wintermute has adeptly navigated through various industry cycles. Culturally, we blend the technological excellence of high-frequency trading firms in traditional markets with the innovative spirit of technology startups. At Wintermute, we are committed to harnessing the transformative potential of blockchain technology. Our long-term vision focuses on the digital asset market, and we strive to play a leading role in establishing an innovative and compliant trading environment. You can learn more about us here.Join Our Team at WintermuteWe are on the lookout for a passionate C++ Trading Platform Developer who possesses a keen interest in both the intricate details of computer hardware and the overarching design of large-scale systems, including data infrastructure. Ideal candidates will have a natural curiosity to explore the inner workings of systems, a solid understanding of data structures, and experience in writing client-server network applications. Additionally, proficiency in writing and optimizing high-performance code is essential. We value both your commercial experience and personal projects that showcase your dedication to technology. A genuine interest in algorithmic and quantitative trading will be considered advantageous.At Wintermute, you will have the opportunity to grow your skills and make a direct impact on our trading activities by developing and enhancing various components of our trading platform, data infrastructure, and related software. You will receive mentorship and insights from seasoned developers and traders, including the founders of the company. Expect a high degree of independence and responsibility from the outset, with a learning curve that is second to none. We do not have legacy systems, excessive approvals, or bureaucracy; all developers report directly to the CTO, who is actively involved in day-to-day operations. Your contributions will be evaluated based on their impact rather than the hours you log.

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