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Lorien

.Net Developer

On site

London, United kingdom

Freelance

14-01-2026

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Skills

Communication Python SQL Sales Attention to detail Programming Oral and Written Communication SQL Server .NET .NET Core JS HTML5 NLP

Job Specifications

.Net Developer (E-Trading & Front Office)
12 Month Contract
Location: London (Hybrid)

Lorien's UK leading Investment banking client are currently looking for a highly skilled .NET Developer to join the team on an initial 6-month contract.

Required Skills and Qualifications
Strong core experience working with .NET Core
Familiarity with SQL database technologies, preferably Oracle/SQL Server
Must have experience with multi-threading programming
Experience with asynchronous and event driven programming
Experience developing Real Time applications
Familiar with building distributed systems
Knowledge of networks and topologies
Firm grounding of common algorithms
Excellent oral and written communication skills
Proactive team player with a "can-do" attitude
Excellent analytical problem solver
Attention to detail and thoroughness a must
Ability to design and implement unit tests and integrate into automated build process
End-to-end ownership - ensure the code that you write is carried through to production
Desired Skills/Experience
Experience of working with .NET 5/.NET Core
Experience of .NET stack AI technologies (ML.NET, NLP etc.)
Experience of working with Rx (Reactive Extensions)
Experience of working with Python
Experience of working with HTML5 and JS
A working knowledge of Fixed Income instruments
A working knowledge of eTrading workflows such as RFQ's and IOI's
A working knowledge of Sales workflows and applications
A working knowledge of ION
Experience working in a Front Office team
Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.

About the Company

Lorien is a technology, transformation and telecom talent solutions specialist. We combine tech expertise with the scope, depth and breadth of large-scale talent solutions. Driven by both clients and candidates, covering Europe and the US, we work with all sectors, sizes and tech needs – from start-up to established, tech companies and those who use tech to propel them further - we work with them all. Our unique position in the market means we have the insight to create tailored solutions – keeping our clients ahead of t... Know more