Full Stack C# .NET Developer | Post-Trade Operations | ETD | Up to £140,000 | AWS | Financial Services | Hybrid, London

A Full Stack C# .NET Developer is required to join a high-performing operations technology team within one of London's most technology-driven financial services firms, operating across global commodity and derivatives markets

.
This is a full stack role with a strong C# .NET backend focus, working on operationally critical systems that support the post-trade processing of Exchange-Traded Derivatives (ETD). You'll be working across the full stack from React front-ends through to C# .NET services and data layers in a highly data-driven environment where accuracy, traceability and consistency are paramoun

t.
This is a rare opportunity for a strong technologist to move into financial services at a firm that genuinely treats technology as a core part of its business rather than a support function. Domain knowledge is not a prerequisite what matters most is full stack engineering depth, a methodical approach to data and a desire to work on complex, high-integrity systems. With a global footprint spanning 40+ offices, access to 60 exchanges, and a team of over 3,200 people, the investment in engineering talent, modern tooling and cloud-native infrastructure is substantial and ongoi

ng.
The

Team
The ETD Operations Technology team sits at the heart of the firm's post-trade ecosystem. They design and maintain the systems responsible

for:
Building and maintaining full stack C# .NET and React applications supporting post-trade operational wor
kflowsProcessing and validating high-integrity transactional and position data across C# .NET se
rvicesSupporting deliveries processing, segregation movements and settlement wor
kflowsHandling commission and fee calculations and operational adjus
tmentsEnsuring exchange-traded activity is accurately reflected across internal platforms and client ac

countsThe environment is data-intensive and operationally critical, built on modern C# .NET, React and AWS infrastructure. The team works closely with operations stakeholders, business analysts and QA to deliver reliable, production-grade solutions that meet strict regulatory and compliance stan

dards.
Role

Details
💰 Up to £140,000 +

L | CI/CD
🏢 Hybrid workin

g | London
As a Full Stack C# .NET Developer

, you will:
Design, build and test full stack C# .NET and React applications within a post-trade processing
environmentDevelop modern, responsive React front-ends that surface complex operational and position data to bu
siness usersDevelop and maintain high-integrity C# .NET backend services handling positions, balances, cash movements and fee
calculationsWork with large volumes of structured transactional and position data, ensuring accuracy and consistency across downst
ream systemsContribute to architecture and design decisions across th
e full stackWrite clean, maintainable and testable code across C# .NET and React, adhering to BDD/T
DD practicesEnsure solutions meet regulatory and compliance requirements across applicable exchanges and clearing frameworks including FCA, SEC,
CFTC and NFASupport and improve CI/CD pipelines and DevOps practices across th
e full stackLiaise with operations stakeholders and business analysts to translate requirements into robust full sta
ck solutionsWork closely with compliance and risk teams to ensure data integrity, traceability and auditability across

all systems
Requir

ed Experience
Strong commercial experience as a Full Stack C#
.NET DeveloperHands-on experience building React front-ends, ideally w
ith TypeScriptExperience working with high-volume transactional or position data in an operationally critic
al environmentExperience with Docker and co
ntainerisationExperience with NoSQL or relational databases, with an understanding of data integrity and consis
tency patternsInfrastructure as Code experience, ide
ally TerraformSolid understanding of modern CI/CD and De
vOps practicesExperience with AWS or equivalent cl
oud technologyKnowledge of BDD/TDD
methodologiesExperience working in Agile/Scrum deliver

y environments
Desir

able Experience
Experience working in a regulated financial services environment with exposure to FCA, SEC, CFTC or NFA complia
nce requirementsKnowledge of Exchange-Traded Derivatives (ETD) operations or po
st-trade systemsFamiliarity with deliveries processing, settlement workflows, reconciliation processes or client m
oney segregationExperience building or maintaining data pipelines handling margin outputs, cash movements or
fee calculationsExposure to JavaScript and/or TypeScript in a fu
ll stack contextExperience with Node.j

| Hybrid, London

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Full Stack C# .NET Developer | Post-Trade Operations | ETD | Up to £140,000 | AWS | Financial Services | Hybrid, London

Job Details