1 to 25 of 27 Senior C# Developer Jobs in London

Senior C# Developer C# .Net - Sports Trading

Hiring Organisation
Client Server
Location
London, United Kingdom
Salary
£ 120 K
Senior C# Developer/Backend Software Engineer (C# .Net) London onsite to 150kAre you an experienced backend focussed C# Developer You could be progressing your career in a senior, hands-on role at a global Sports Trading business.As … Senior C# Developer within the trading engine team, you'll collaborate to design and develop real-time trading systems, you'll often be collaborating with the strategy team on Greenfield projects which you'll take ownership of and will see the business impact of. There ...

Senior C# Developer – Fintech50- Wimbledon

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 80 K
Senior C# Developer – Fintech50Up to 65,000Quant Capital is urgently looking for a C# Developer to join our well-known Fintech50 client who produces software disrupting the wealth management market.The C# Developer role has come around … expansion and strategic change, the C# Developer will report to the Development Team Lead. This role offers the ability to move towards Team Lead as well as Development Manager role.The development team works in a very agile fashion on 2 week sprints. The C# Developer ...

Senior C# Developer – Southwest London

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 80 K
Senior C# Developer – Fintech50Up to 70,000 p/aQuant Capital is urgently looking for a C# Developer to join our well-known Fintech50 client who produces software disrupting the wealth management market.The C# Developer role has come around … expansion and strategic change, the C# Developer will report to the Development Team Lead. This role offers the ability to move towards Team Lead as well as Development Manager role.The development team works in a very agile fashion on 2 week sprints. The C# Developer ...

C# Senior Developer

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 80 K
Tech: C# 5, Visual Studiuo, AWS, Angular.JS, Bootstrap, Docker Challenge: Greenfield Financial platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 30 man flat Dev Team Pay: 70k, Bonus- training budget, Pension, Life/Health, Some Flex WorkingC# Senior Developer FintechQuant Capital is urgently looking for a C# Senior Developer to join our high profile client.Our client is a well known financial market data provider and a key provider to major investment banks and funds. They are part of the Fintech50The environment ...

Senior C# Developer

Location
Greater London, England, United Kingdom
Senior C# Developer/Senior Software Engineer Working pattern: Hybrid. x3 days in Office Location: London Benefits: Pension up to 17%, Bonus, 34 days holiday + a heap of flexible benefits. A global business is hiring a Senior C# Developer … from the first design conversation through to the release note and whatever comes back afterwards. The judgement call on technical debt in a mature C# codebase: what is genuinely holding the platform back, what is cosmetic, and what the team should spend its next quarter on. Larger refactoring ...

Senior Developer – C# / .NET / SQL – Hybrid / London

Hiring Organisation
MYO Talent
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £100,000 per annum
Developer/Senior Developer/C#/C#.NET/.NET Core/ASP.NET/SQL/T-SQL/Developer/Programmer/Mentoring/Hybrid/Remote/Salary £50,000 – 80,000 + 15% bonus + car allowance … collaborative team environment. Requirements: Proven experience as a Developer/Senior Developer Strong hands-on expertise in C#, .NET/.NET Core, and SQL/T-SQL. Solid understanding of database design, performance optimisation, and query tuning. Experience building and supporting integrations with ...

Senior C# Developer - Financial - Hybrid - City of London

Hiring Organisation
Noir
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£120,000 per annum
Senior C# Developer - Investment Technology - London (Tech stack: C#, .Net, Investment Management, Asset Classes, Fixed Income, Equities, Python, SQL, OMS, EMS, Docker, CI/CD) Our client is one of the most exciting technology companies operating within the Investment Management space. Having grown rapidly … particularly exciting stage as they continue to scale their innovative platform, client base and engineering teams. They are looking for a talented C# .Net Developer to join a highly client-facing engineering team. This isn't a traditional development role - you'll combine hands-on C# ...

Senior C# Developer

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £416/day Inside IR35
Contract Opportunity | Tier 1 Investment Bank | Canary Wharf Overview Our client, a Tier 1 Investment Bank based in Canary Wharf, is seeking an experienced C# Developer to join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting … full software development lifecycle, contributing to the enhancement of existing applications while helping shape the future-state architecture. Key Information Role: Senior C# Developer Location: Canary Wharf, London (Hybrid Working) Contract Length: 6 Months Initial Contract Rate: £416 per day (Inside IR35) Start Date: ASAP ...

Senior C# Developer

Hiring Organisation
Lorien
Location
London, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Risk & P&L IT Senior Developer Location: London (Hybrid, 3 days onsite) Contract Length: 6 Months Initial Contract Day Rate: (Inside IR35) Overview We are seeking an experienced Risk & P&L IT Senior Developer to join a high-performing Global Markets technology … team. Required Skills & Experience Essential Significant software engineering experience with a proven track record of delivering complex enterprise systems. Strong knowledge of Python or C#/.NET development within enterprise environments. Experience developing applications in multi-threaded and distributed environments. Strong SQL development skills, including complex query optimisation ...

Senior C# Developer – Financial – Hybrid – City of London

Hiring Organisation
Noir Consulting
Location
London, United Kingdom
Salary
£ 100 K
LocationCity of London, London, United Kingdom SalaryUp to 120000 per annum + Bonus + Bens Job typePermSenior C# Developer – Investment Technology – London(Tech stack: C#, .Net, Investment Management, Asset Classes, Fixed Income, Equities, Python, SQL, OMS, EMS, Docker, CI/CD)Our client … Classes beyond Equities and Fixed Income, including ETDs, OTCs and Alternatives, would also be advantageous.This is a fantastic opportunity for a senior C# .Net engineer who wants to remain technically handson while joining an ambitious, innovative FinTech at a genuinely exciting point in its growth. ...

Senior C# / Orchestrade Developer

Hiring Organisation
Talan
Location
London, United Kingdom
Salary
£ 80 K
ensure that data is managed responsibly and ethically.Our expertise spans consultancy and outsourcing services, including Technology, Data & AI and ConsultingTalan seeks an experienced C#/Orchestrade developer to join our teamJob DescriptionWe are looking for a strong Senior C# Developer with deep … front-to-back solutions supporting trading, risk, and post-trade functions within a high-performance financial environment.Key requirements include:Extensive hands-on experience in C# (.NET) in complex, business-critical systemsStrong background in FX products (spot, forwards, swaps, options) and trading workflowsProven expertise with the Orchestrade vendor platform, including ...

Senior C#/.NET Developer — Cloud Modernisation (Hybrid)

Location
Greater London, England, United Kingdom
Recruitment is seeking an experienced Senior C# Developer for a Tier 1 Investment Bank in Canary Wharf. You will contribute to modernising core desktop applications, moving to web-based and cloud-enabled platforms, and shaping future-state architecture within a large enterprise. You'll work ...

Senior Full Stack Developer - C#/Azure /Kafka

Location
Greater London, England, United Kingdom
Senior Full Stack Developer - C#/Azure/Kafka Internal Title: Software Engineering Senior Consultant Location: London, UK (Hybrid - typically 1-2 days per week in office/client site) Contract: 6-month rolling contract Rate: £600-650 per day, Outside IR35 Start … event-streaming capability alongside an established data platform organisation. The focus will be on designing and building event adapters and supporting services in C# on Azure, connecting source systems and trading data into a Kafka-based event streaming platform. This is a hands-on role for an experienced engineer ...

Senior C# IAM Developer - Auth0, CIAM, AWS - Outside IR35

Hiring Organisation
Smart Sourcer Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £700 to £750 per day
Senior C# IAM Developer - Auth0, Identity & Access Control, AWS OUTSIDE IR35 Contract: 8 months Rate: £700 - £750 OUTSIDE IR35 Location: 100% remote The Role: Working for a global, market leading B2B SaaS business, youll lead the design and implementation of secure, identity-driven backend services … modern C#/.NET environment. Your work will centre on authentication, authorization, and secure event-driven architectures. Youll own our Auth0 integration end-to-end , ensuring our platform meets strict security, compliance, and reliability standards. This is a role for someone who thinks deeply about threat models, defence ...

Senior C# IAM Developer - Auth0, CIAM, AWS - Outside IR35

Hiring Organisation
Smart Sourcer Limited
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 700 - 750 Daily
Senior C# IAM Developer - Auth0, Identity & Access Control, AWS OUTSIDE IR35 Contract: 8 months Rate: £700 - £750 OUTSIDE IR35 Location: 100% remote The Role: Working for a global, market leading B2B SaaS business, youll lead the design and implementation of secure, identity-driven backend services … modern C#/click apply for full job details ...

Senior Developer C# React Investment Banking

Location
Greater London, England, United Kingdom
front office risk and valuation platform used in a fast paced, real time environment. The Role We are seeking a hands on Senior Developer to join a high impact technology team responsible for risk, valuation, and decision support systems. You will work across the full stack ...

Remote Senior Developer — Azure, C#, AI & Mentoring

Location
City Of London, England, United Kingdom
Michael Page is seeking a Senior Developer for a Financial Sector client. The role supports remote work with weekly meetups in Birmingham or London. You will join … Agile team of 8 within a technology function of around 80 people, taking a hands-on coding lead with mentoring responsibilities. The position requires C#, Azure, SQL, and Angular expertise, plus mentoring and UK work experience. Familiarity with AI coding tools is a bonus. #J-18808-Ljbffr ...

Senior C# & React Developer, Real‐Time Finance (Hybrid)

Location
Greater London, England, United Kingdom
Talan Group is looking for a Senior Developer to join their technology team in Greater London. This role requires expertise in TypeScript and React, where you will design and deliver features across UI and backend services. You will collaborate closely with stakeholders to refine requirements ...

Senior Developer — Remote (C#, Angular, AI, Mentoring)

Location
Greater London, England, United Kingdom
Michael Page client in the financial sector is seeking a Senior Developer to join an agile team. The role is largely hands-on with mentoring responsibilities and can be done remotely with weekly meetups in Birmingham or London on a Wednesday. You will design, develop ...

Senior Developer - Risk Technology - C# .NET, Python, Snowflake SQL (Vice President)

Hiring Organisation
Jefferies Financial Group
Location
London, United Kingdom
Salary
£ 100 K
external vendor and internally developed analytics libraries to handle curve and vol surface construction and pricing of trades.We are seeking a hands‐on Senior Developer to build and operate a high‐scalable, AWS cloud-based risk platform leveraging a Snowflake database containing trade data, reference data … seamless end to end process for delivering risk.Participate in an on-call support rotaEssential Experience/Skills7+ years of development experience, Python & ideally C# .NET.Experience building and supporting pricing and risk management systems for one or more of the following asset classes (in order of importance) equities, fixed income ...

Senior Full Stack Developer (Angular, C#, AWS/Azure)

Location
Greater London, England, United Kingdom
Role - Senior Full Stack Developer (Angular, C#, AWS/Azure) Employment Type - Fixed term contract - 6 months Mode - Hybrid (1-2 days in office) Role Overview We are seeking a Senior Full Stack Developer to support the greenfield development … customer-facing web application from the ground up. Develop responsive front-end components using Angular. Build and integrate backend services and APIs using C#/.NET. Contribute to solution architecture and technical design decisions. Implement secure authentication and authorisation mechanisms, including MFA/2FA. Ensure high standards of testing ...

Senior Back-End Developer - .NET / C# -High Growth SaaS

Hiring Organisation
Robert Half
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Senior Back-End Developer - .NET/C# Are you looking for a new challenge? Looking for autonomy and a seat at the table? London | Hybrid | Fintech The Role A fast-growing fintech is building a new in-house engineering team and is looking … Senior Back-End Developer to become a key technical hire. You'll take ownership of a modern platform built with C#/.NET microservices, PostgreSQL, Redis and Google Cloud, helping shape architecture, engineering standards and future development. Key Responsibilities Build and maintain C#/ ...

Senior Back-End Developer - .NET / C# -High Growth SaaS

Hiring Organisation
Robert Half
Location
London, United Kingdom
Salary
£ 80 K
Senior Back-End Developer to become a key technical hire.You'll take ownership of a modern platform built with C#/.NET microservices, PostgreSQL, Redis and Google Cloud, helping shape architecture, engineering standards and future development.Key ResponsibilitiesBuild and maintain C#/.NET microservicesDesign APIs … Kubernetes/GKEImprove CI/CD, testing, observability and reliabilityLead code reviews and mentor other developersWork closely with DevOps, Product and OperationsRequirementsStrong commercial C#/.NET experienceMicroservices and REST API expertiseStrong PostgreSQL and Redis knowledgeExperience with Kubernetes/Docker/CloudStrong testing and CI/CD backgroundTechnical leadership ...

Senior Front Office Proximity Developer (C#/WPF)

Location
Greater London, England, United Kingdom
United States Digital Space LLC is seeking a C#/.NET Developer in Greater London to design tailored software applications for the Commodities Markets. The role combines hands-on development and critical production support. Candidates should have strong abilities in C#/.NET and experience ...

Senior Full Stack Developer (C#/React/TypeScript) - REMOTE working

Location
Greater London, England, United Kingdom
even better. The work is a mixture of green-field and legacy projects (much like any other mature organisation) mostly using C#, SQL Server, Next.js, React & TypeScript, with a combination of monolithic and microservices architectures. Key Responsibilities We are looking for technically strong and organised senior developers … Experience We would like to meet someone who is Minimum 6 years of commercial experience of React/TypeScript Minimum 6 years of solid C# in a commercial environment Produces initial results rapidly and iterate based upon feedback. Knowledge of microservice design principles - preferably with commercial experience. Experience with ...