Sr .Net Developer

Ascendion; Greater London; Hybrid; GBP 60,000 - 90,000; Full time

Job summary

Ascendion in London is seeking a Senior .Net Developer (Electronic Trading) to own delivery, design, and integration across trading systems. You will implement scalable services and APIs, with a focus on performance and reliability.

Work in a hybrid model and collaborate with partner technology teams, contributing to architecture, CI/CD, and automated testing. Strong expertise in .NET Core, REST, microservices, and modern messaging is essential.

Qualifications

• Proven experience in building .NET Core applications and OO design.
• Strong knowledge of RESTful APIs, microservices and asynchronous coding.
• Hands-on with CI/CD and testing frameworks.

Responsibilities

• Take responsibility for software delivery, ensuring quality and scope.
• Own technical design and document system architecture.
• Collaborate closely with partner technology teams.

Skills

.NET

OO Principles

ASP.NET Core

REST APIs

Multithreading

SQL/NoSQL

Microservices

Unit testing

NUnit

Moq

Cucumber

RabbitMQ

TIBCO

SignalR

Git

TeamCity

Tools

Docker

RabbitMQ

SignalR

TIBCO

Git

TeamCity

NUnit

Moq

Cucumber

Job description

Job Title: Senior .Net Developer (Electronic Trading)

Location: London (Hybrid working model)

Job Responsibilities/ Role:

• Take responsibility for the software delivery by ensuring quality and scope expectations are met.
• Contribute and take ownership of the technical design and ensure all aspects of the system architecture are well documented.
• Work closely with partner technology teams and to collaborate effectively.

Technical Skills Required:

• Very deep understanding of .Net/.Net Core and Solid understanding of OO principles.
• Experience in ASP.NET Core Web API and RESTful API techniques
• Solid understanding of and experience with multi-threading and asynchronous programming.
• Familiar with SQL and NoSql databases
• Hands-on experience with containerization solutions like Docker.
• Experience designing and building API based service oriented or microservice architectures.
• Diligent with automated testing i.e. Nunit/Moq/Cucumber etc.
• Strong experience with middleware messaging services like Rabbit MQ, TIBCO, SignalR etc.
• Solid experience with continuous integration and continuous delivery tools like Git, TeamCity etc.

Nice to have Skills:

• Fixed Income product knowledge
• Experience configuring continuous integration and continuous delivery tools.