C# Developer - Post Trade Services

Maven; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A market-leading trading firm in Greater London seeks a skilled developer to design and develop solutions supporting business functions. Ideal candidates are passionate about quality code and can collaborate effectively in a dynamic team. Proficiency in C# and strong analytical skills are essential. The role offers competitive compensation, annual bonuses, and various benefits including private healthcare and gym access.

Benefits

Competitive compensation

Annual discretionary bonus

Fully catered breakfast, lunch and snacks

25 days’ annual leave

Informal dress code

Private healthcare and life assurance

Monthly company events

Private Gym

Qualifications

• Strong analytical and system design skills are crucial.
• Excellent C# programming ability with a focus on testing processes is required.

Responsibilities

• Design and develop solutions supporting critical business functions.
• Craft quality code and automated tests.
• Interact and collaborate with stakeholders and infrastructure engineers.

Skills

Strong analytical and system design skills

Excellent C# ability including strong focus on testing processes

Tools

React

TypeScript

Kafka

RabbitMQ

Prometheus

Grafana

Job description

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.

Core Tech design, builds and runs the Core Platforms and its architecture at Maven. It provides applications, services and libraries upon which the whole business depends. The team’s main responsibility is for middleware and backend services; we also develop full‑stack solutions, including web‑based front‑ends.

The Role

An opportunity to create outstanding solutions within a highly skilled, supportive and multi‑disciplinary team, developing and improving to reach your full potential. You should be passionate about quality, and able to work on fast‑paced projects which have direct impact to our trading activities. Team dynamics are crucial to us whereby we recognise the value of strong individual contributions.

What you’re going to do

• Design and develop sound solutions to support critical business functions with a focus on testability, maintainability, performance and resilience
• Craft great code and tests, using automation as your friend
• Analyse, capture and communicate your design decisions
• Interact and collaborate with stakeholders, SRE’s and Infrastructure engineers

What you’re going to need

• Strong analytical and system design skills
• Excellent C# ability including strong focus on testing processes

Nice to have

• Modern Front‑end UI development experience, especially React and TypeScript
• Event‑driven design, DDD, CQRS and/or EventSourcing experience for Multithreading, distributed design, message queues (e.g. Kafka, RabbitMQ), fault‑tolerance, Prometheus, Grafana

WHAT WE CAN OFFER YOU

• Competitive compensation
• Annual discretionary bonus
• Fully catered breakfast, lunch and snacks.
• 25 days’ annual leave
• Informal dress code
• Private healthcare and life assurance
• Monthly company events
• Private Gym

Maven is committed to creating a diverse and inclusive culture for our employees. It is crucial for us to understand the demographics of our candidate pool to measure our recruitment practices. There is no requirement for any candidate to answer our demographic questions. For candidates who complete the questionnaire, their data will be anonymised and used only in the aggregate to inform our attraction strategy. Maven is an equal opportunity employer and this data will be used for opportunity monitoring purposes.