1 to 25 of 117 C# Jobs in the City of London

Senior Software Engineer

Hiring Organisation
NearTech Search
Location
City of London, London, United Kingdom
product innovation and new feature development You Will Need 5+ years software engineering experience within modern development environments Strong expertise in .NET Core (C#), Microsoft Azure services, Frontend (ideally Angular) and SQL Server. Experience integrating payment platforms or financial APIs– Experience working with event-driven systems, messaging, and secure authentication ...

Senior Software Engineer

Hiring Organisation
Retelligence
Location
City of London, London, United Kingdom
global financial markets. The Technical Stack You will be working within a modern, engineering-first culture. The core stack includes: The Engine: Expert-level C# and .NET Core mastery. Architecture: Deep understanding of SOA (Service Oriented Architecture) and complex Object-Oriented design patterns. System Dynamics: Specialized knowledge of concurrency, asynchrony ...

Senior UX/UI Designer & Frontend Developer - Figma, React - Global

Hiring Organisation
Smart Sourcer Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
testing and iterate designs based on real feedback from legal professionals. Ensure consistency across platforms and champion accessibility (WCAG). Integrate with backend services (C#, Azure) and contribute to API-driven developmentideal for someone keen to expand their backend exposure. Maintain design systems, component libraries, and documentation to support scale ...

Software Engineer

Hiring Organisation
Harrington Starr
Location
City of London, London, United Kingdom
debugging and problem-solving skills Experience collaborating with technical stakeholders such as researchers or data scientists Desirable Experience Experience with languages such as C++, C#, Rust, or JavaScript Experience building microservices or distributed systems Linux experience including debugging services and working with system logs Exposure to trading systems, market data ...

Senior Full Stack Engineer - Technologist

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
ownership of projects and mentoring more junior team members You have strong TypeScript skills, combined with any backend programming language (e.g. Python, Java, C++, C#) You're happy to work with the following tech stack (you don't need experience with all): Elixir, Ember, Elm, Phoenix, LiveView, Python, PostgreSQL ...

SharePoint / Microsoft 365 Solutions Developer

Hiring Organisation
MLM Search LTD
Location
City of London, Greater London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £75000/annum
integration Experience working with JavaScript or TypeScript and modern web development practices Understanding of secure development and enterprise collaboration environments Desirable Experience Experience with C# and .NET-based services Experience integrating Microsoft Azure services Familiarity with modern front-end frameworks such as Angular or React Experience working in regulated ...

.NET Developer

Hiring Organisation
Lime Street Recruitment Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£50,000
Required We are looking for someone who combines strong technical ability with excellent problem-solving skills. The successful candidate will demonstrate: Advanced knowledge of C# .NET with a track record of designing and delivering high quality solutions Excellent communication skills, both verbal and written Strong problem-solving and logical thinking ...

Senior SharePoint Developer

Hiring Organisation
Larbey Evans
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Strong expertise in SPFx development and modern front-end technologies (TypeScript, JavaScript, React, HTML5, CSS3) Experience integrating SharePoint solutions using REST APIs, Microsoft Graph, C#, and .NET Hands-on management of on-prem SharePoint environments, including patching, upgrades, performance tuning, and troubleshooting Experience with Business Connectivity Services (BCS), External Content ...

Software Engineering Manager - Technical Delivery

Hiring Organisation
The Curve Group
Location
City of London, London, United Kingdom
Employment Type
Permanent
ability to review architecture, challenge solutions, and implement engineering standards Excellent communication skills for both technical and non-technical stakeholders Familiarity with .NET/C#, Azure, DevOps/CI/CD, microservices, and modern scalable architecture principles is desirable The opportunity: Shape a new leadership role in a regulated, innovative ...

Software Engineer

Hiring Organisation
Harrington Starr
Location
City Of London, England, United Kingdom
maintain production code Research and integrate new technologies Foster a culture of engineering excellence and continuous improvement Key Requirements 5+ years’ experience working with C#/.NET Experience developing front and middle office systems Strong SQL skills Experience with cloud-native solutions (Azure or AWS) Knowledge of event-driven, microservices ...

Senior Python Developer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £540 per day
Develop and maintain .NET code for back-end services, APIs, and integrations with other systems. Utilise relevant .NET frameworks and technologies (e.g., ASP.NET Core, C#, Entity Framework). Write unit and integration tests to ensure code quality and reliability. Reverse Engineering: Analyse and understand existing codebases (potentially Python) to identify ...

Full Stack Developer (.NET Core / Angular)

Hiring Organisation
Hays Technology
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 50,000 - 70,000 Annual
days) Annual bonus of between 10% and 25%, depending on personal and company performance. Desired Skills and Experience Software, Developer, Asset Management, AML, C#, .NET, .NET Core, angular, UI, Front End, Azure, SQL Server, Financial Services, Lead Developer, Senior Developer, AI, Artificial Intelligence, Hays Specialist Recruitment Limited acts ...

Senior Platform Engineer

Hiring Organisation
collects.io
Location
City of London, London, United Kingdom
team environment (GitHub Actions or Azure DevOps). • Competence in at least one backend language (Python strongly preferred, given the ML stack; Go, C#, or TypeScript also valuable). • Experience with containers (Docker, Kubernetes or equivalent) and modern deployment patterns (blue-green, canary, feature flags). • Production experience with monitoring ...

C# Developer

Hiring Organisation
VIQU IT
Location
London, City of London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £650/day
C# Developer – 6-month contract – London – SC Cleared – Inside IR35 My Financial Services customer is looking for a C# Developer, that will play a key role in designing and building components of a synchronisation platform. You will work across backend and frontend technologies to enhance the Lab environment, implement feedback … joining a collaborative, forward-thinking engineering team delivering scalable, secure, and high-performing solutions within Azure. Skills & Experience required from the C# Developer Active SC Clearance Strong hands-on development experience with C# and .NET Solid SQL and database development expertise Experience building modern web applications using Angular, HTML ...

DevOps Engineer

Hiring Organisation
Oscar
Location
City of London, London, United Kingdom
Security controls & principles CI/CD pipeline management, SRE skills (desriable) Familiarity with Agile development practices, working with engineering teams Coding/scripting e.g. C#, Java, Azure CLI, Bash, or PowerShell ...

Graduate Software Engineer / Quant Developer / Quant Researcher - Up to £200,000 + Bonus + Package

Hiring Organisation
Hunter Bond
Location
City of London, London, United Kingdom
driven culture ✅ What You’ll Bring 🎓 Degree in Computer Science, Mathematics, Physics, Engineering , or another STEM discipline 💻 Strong programming skills in Python, C++, Java, C#, or KDB+/Q 🔍 Analytical mindset with a passion for tackling complex, data-driven challenges ⚡ Curiosity, drive, and the ability to thrive in fast-paced ...

Umbraco Developer

Hiring Organisation
Hays
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Umbraco websites to version 17.2 - this is essential Strong commercial background with Umbraco 10+ and modern .NET (6/7/8) Proficiency in C#, MVC, Razor, and dependency injection patterns Hands-on experience migrating content models, document types, data types, and packages - including replacing deprecated or incompatible components Solid ...

Data Engineering Product Owner, Technology, Data Bricks, Microsoft

Hiring Organisation
Carrington Recruitment Solutions Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
States) on occasions. We need someone who has come from a Data-Engineering First background with a hardened skillset in Microsoft Stack Technologies (C# .NET Core) who has then transitioned into Product Ownership. We need someone highly analytical who can understand large Data Sets, Data Bricks and is able ...

Data Bricks Product Owner, Microsoft Fabric Product Owner, Part Remote

Hiring Organisation
Carrington Recruitment Solutions Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
need someone who has come from a Data Bricks, Microsoft Fabric, Data-Engineering First background with a hardened skillset in Microsoft Stack Technologies (C# .NET Core, Fabric) who has then transitioned into Product Ownership. We need someone highly analytical who can understand large Data Sets, Data Bricks and is able ...

Software Engineering Manager

Hiring Organisation
HirexHire
Location
City of London, London, United Kingdom
8+ years of software development experience, including 3+ years leading or managing engineering teams. Strong background in object-oriented programming using languages such as C#, Java, Python, or similar. Experience building Microsoft-based applications across front-end, back-end, and services layers. Hands-on experience with Microsoft Dynamics 365, including ...

Penetration Testing Manager

Hiring Organisation
Capital One UK
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
code comfortably in one or more interpreted languages (eg. Python, Bash, PowerShell, Perl, Ruby) and one or more compiled languages (eg. C, C++, C#, Golang, Rust, Java, Objective-C) One or more of the following certifications (OSCP, OSCE, GPEN, GXPN, CRTO, CREST Certified Simulated Attack Manager) Where ...

.NET Developer

Hiring Organisation
Noir
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
.NET Developer, C# 14 - Global Technology Brand - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET, C# 14, WPF, React, Angular 21, Microservices, Azure, ASP.NET Core Web API, Entity Framework, Agile, Programmer, Full Stack Engineer, Architect, .NET Developer) Our clients fascinating story dates back to 1981; today they have fast become … expand their award winning .NET software development team. We are seeking .NET Developer candidates with experience of either web application development (.NET Core, C#) or winforms/WPF (C#) development. Our client will provide you with training into: .NET 10.0, WPF, MVVM, Prism, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js ...

Dynamics Developer

Hiring Organisation
Norton Blake
Location
City of London, London, United Kingdom
maintenance Mobile offline configuration Work order automation What We’re Looking For 6–12 years’ experience in D365/CRM technical development Strong .NET & C# Deep understanding of Dataverse architecture Experience delivering large-scale enterprise D365 programmes Strong DevOps/CI-CD experience Confident working with distributed, cross-functional teams ...

Security Platform Engineer - DevSecOps | Quant Finance Research Firm

Hiring Organisation
Techfellow Limited
Location
City of London, London, United Kingdom
years’ experience in software engineering, DevOps, security engineering or platform-focused roles within complex technical environments Strong engineering capability in Java or C# (Python also highly relevant) Proven experience working at scale in established, production-grade environments Deep familiarity with DevOps tooling including CI/CD pipelines (Jenkins, GitLab), Infrastructure ...

.NET Developer

Hiring Organisation
Noir
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £80,000 per annum
.NET Developer, .NET 10.0, C# 14 - Consultancy - London Or Surrey (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is an award winning Microsoft consultancy. They specialise … full project life cycle. .NET Developer applicants should have a skill set that encompasses some or all of the following: .NET, .NET Core, C# and Azure SQL. Knowledge of software development methodologies is of interest (Agile, Scrum). My client will provide training in: .NET 10.0, ASP.NET Core, C# ...