Contract .NET Developer - Energy Trading

Oliver Bernard; England; On-site; GBP 55,000 - 75,000; Full time

Job summary

Oliver Bernard is seeking an experienced .NET Developer to design, develop, and deliver high-quality, test-driven software supporting the full trade lifecycle. You will work across a diverse portfolio, collaborating with Technical Leads, Architects, and key stakeholders to deliver robust solutions.

You will bring strong C# .NET/WebAPI experience, proficiency in SQL Server, and familiarity with modern UI frameworks, Azure DevOps, CI/CD, and IaC. Trading/domain experience is a plus.

Qualifications

• Experience in enterprise C# .NET development and WebAPI in Agile environments.
• Good understanding of Design Patterns and SOLID principles for scalable architecture.
• Proficiency with SQL databases (Microsoft SQL Server); MongoDB experience is a plus.
• Familiarity with modern UI frameworks (Vue.js, Angular, Blazor) is advantageous.
• Experience with Azure DevOps, CI/CD pipelines, and Infrastructure as Code (Terraform).
• Exposure to messaging patterns (RabbitMQ, Kafka) and OAuth2 authentication is beneficial.
• Strong problem-solving skills and ability to work independently and with cross-functional teams.
• Prior trading, financial services, or data-intensive experience is a major advantage.

Responsibilities

• Design, develop, and deliver high-quality C# .NET solutions in a data-driven environment.
• Collaborate with vertical leads and stakeholders to ensure seamless software delivery.
• Participate in code reviews to promote best practices and quality.
• Mentor junior developers and foster continuous learning.
• Optimise performance and reduce technical debt through architectural consistency.

Skills

C# .NET

WebAPI

Agile

SOLID

Design patterns

Problem solving

Cross-functional collaboration

Trading/financial services domain

Tools

Azure DevOps

CI/CD pipelines

Terraform

SQL Server

MongoDB

Vue.js

Angular

Blazor

RabbitMQ

Kafka

OAuth2 authentication

Job description

We’re looking for an experienced .NET Developer to play a crucial role in designing, developing, and delivering high-quality, test-driven object-oriented software that supports the full trade lifecycle. You’ll work across a diverse portfolio of applications and technology stacks, collaborating closely with Technical Leads, Architects, and key business stakeholders to deliver robust and scalable solutions.

Key Responsibilities

• Design, develop, and deliver high-quality C# .NET solutions in a complex trading or data-driven environment.
• Work closely with Vertical Leads (Delivery, Technical, QA, Architecture, and Functional) to ensure seamless software delivery.
• Participate in code reviews to drive best practices and maintain development standards.
• Support and mentor junior developers, fostering a culture of continuous learning.
• Optimise performance and minimise technical debt by driving architectural consistency and adhering to best practices.
• Collaborate with business analysts and stakeholders to translate business needs into technical solutions.
• Contribute to the software development roadmap, advocating for best-in-class development practices.

What You’ll Need

• Strong experience in enterprise development using C# .NET, WebAPI and working within an Agile environment.
• Knowledge of Design Patterns, SOLID principles, and scalable architecture best practices.
• Proficiency with SQL databases (Microsoft SQL Server preferred) – experience with MongoDB is a plus.
• Familiarity with modern web UI frameworks (Vue.js, Angular, Blazor) is advantageous.
• Experience with Azure DevOps, CI/CD pipelines, and Infrastructure as Code (Terraform) is a plus.
• Exposure to messaging patterns (RabbitMQ, Kafka) and authentication methods like OAuth2 is beneficial.
• A strong problem-solver who can work independently while effectively collaborating with cross-functional teams.
• Prior experience in a trading, financial services, or data-intensive environment is a major advantage.