Software Engineer

CipherTek Recruitment

Greater London

Hybrid

GBP 129,150

Full time

14 days+

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Job summary

A leading technology recruitment agency is seeking an Expert .NET Developer for a major project with an investment bank to modernise their trading systems. This remote position involves leading database initiatives and enhancing performance. Ideal candidates have deep .NET expertise and experience in finance. Competitive daily rates up to £700.

Qualifications

Deep knowledge of .NET 8 and .NET 4.8.
Strong fundamentals in querying, table design, and ETL.
Experience in low-latency, data-driven applications.

Responsibilities

Lead initiatives on DB modernisation and performance optimisation.
Archive legacy data from key tables with precision.
Redesign and refactor high-activity tables for better performance.

Skills

Expert .NET Developer

SQL Server Proficiency

ADO.Net Expertise

Async & Multithreading Mastery

Attention to Detail

Finance Industry Experience

Job description

CipherTek Recruitment provided pay range

This range is provided by CipherTek Recruitment. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from CipherTek Recruitment

Role: Expert .NET Developer – Cross Asset Trading System

Location: Very Flexible. Can offer Remote with occasional travel to London City offices

Contract: 12 months

Rate: Up to £700/day

About the Role:

We are partnering with a leading investment bank on an ambitious programme to modernise and enhance their cross-asset trading systems. This is a technically challenging, hands-on role, ideal for an expert .NET developer with a strong SQL Server background and experience working in financial environments.

You will be joining a highly skilled team focused on performance, reliability, and scalability, tackling complex issues in real-time, data-driven applications. This is purely a tech-heavy role—business knowledge is helpful but not required.

What You’ll Be Doing:

Leading initiatives on DB modernisation and performance optimisation
Archiving legacy data from key tables with precision to ensure smooth migrations
Redesigning and refactoring high-activity tables to improve performance and maintainability
Developing frameworks and tooling for real-time monitoring of trading systems
Modernising and upgrading legacy codebases, driving best practices in .NET development

What We’re Looking For:

Expert .NET Developer: Deep knowledge of .NET 8 and .NET 4.8
SQL Server Proficiency: Strong fundamentals in querying, table design, and ETL processing large datasets (performance tuning not required)
ADO.Net Expertise: Familiarity with EntityFramework or other ORMs is a plus, but not essential
Async & Multithreading Mastery: Experience in low-latency, data-driven applications
Attention to Detail: Ability to spot rare, critical issues before they reach production
Previous experience in the finance industry, ideally in trading systems

Why This Role Is Exciting:

Work remotely while tackling cutting-edge technical challenges
Collaborate with a high-performing team on a strategic, high-impact programme
Influence system design, architecture, and long-term performance improvements
Competitive daily rates up to £700

If you’re a highly skilled .NET developer who thrives in challenging, high-stakes environments and loves working with complex, real-time systems, this is the perfect opportunity to make an impact.

Seniority level

Seniority level
Mid-Senior level

Employment type

Employment type
Contract

Job function

Job function
Engineering, Consulting, and Information Technology
Industries
Investment Banking and Technology, Information and Media

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