C# Developer - Front Office Trading Systems - Options Market Making

Maven Securities; London; On-site; GBP 60,000 - 100,000; Full time

Job summary

An innovative trading firm is seeking a talented C# Developer to enhance their front-office trading systems. This role offers the chance to work closely with traders, tackling complex challenges in a fast-paced environment. You will design, develop, and maintain critical systems, ensuring high performance and resilience. Join a dynamic team committed to leveraging cutting-edge technologies and making a real impact in the financial markets. If you thrive on problem-solving and delivering high-quality code, this opportunity is perfect for you.

Benefits

Competitive compensation

Annual discretionary bonus

25 days’ annual leave

Informal dress code

Monthly company events

Qualifications

• Expert-level C# skills with a solid understanding of testing processes.
• Strong analytical and system design skills to tackle complex problems.

Responsibilities

• Collaborate with business users to gather and understand requirements.
• Design and develop mission-critical systems focusing on performance.

Skills

C#

Analytical Skills

System Design

Problem Solving

Tools

.NET 8

.NET 9

Docker

Kubernetes

CI/CD Pipelines

Job description

C# Developer - Front Office Trading Systems - Options Market Making

Chicago

ABOUT THE COMPANY:

Maven is a market-leading proprietary trading firm allocating internal capital across discretionary, systematic, and market-making strategies. Our collective expertise spans traders, engineers, and technologists, unified by an unwavering dedication to enhance our efficiency as a premier liquidity provider for globally listed derivatives. We leverage groundbreaking execution and pricing technologies to elevate and improve how financial markets operate.

Overview

Join a high-impact, agile team at the heart of our proprietary trading firm, where innovation drives success. Our Interactive Trading team operates across London, Amsterdam, and Chicago, supporting and developing cutting-edge front-office trading systems used by our options market-making team. We take ownership of proprietary systems, from robust back-end services to intuitive web-based front-ends, ensuring seamless and efficient trading operations.

The Role

We’re looking for a talented Front Office C# Developer to design and implement exceptional solutions within a collaborative and dynamic environment. You'll work directly with traders and business stakeholders, tackling complex challenges in fast-paced, high-stakes scenarios. If you thrive on problem-solving, delivering high-quality code, and making an immediate impact on trading performance, this role is perfect for you.

What You’ll Do

• Collaborate with front-office business users to gather and understand requirements.
• Design, develop, and enhance mission-critical systems with a focus on performance, maintainability, testability, and resilience.
• Write clean, high-quality code and comprehensive tests, leveraging automation to streamline processes.
• Analyse, document, and communicate design decisions effectively.
• Partner with stakeholders, Site Reliability Engineers (SREs), and infrastructure teams to ensure robust system delivery and operation.

What We’re Looking For

• Strong analytical and system design skills, with the ability to tackle complex problems.
• Expert-level C# skills, with a solid understanding of testing processes (currently using .NET 8, transitioning to .NET 9).
• Experience with .NET, CI/CD pipelines, and containerization technologies like Docker and Kubernetes.

Nice to Have

• Experience programming in Python
• Experience using MongoDB and PostgreSQL
• Familiarity with event-driven architectures, Domain-Driven Design (DDD), Command Query Responsibility Segregation (CQRS), or Event Sourcing principles.

Why Join Us?

• Competitive compensation
• Annual discretionary bonus
• 25 days’ annual leave
• Informal dress code
• Monthly company events

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