1 to 25 of 263 C# Jobs in London

Full Stack Developer

Hiring Organisation
Devonshire Hayes Recruitment Specialists Limited
Location
London, UK
Employment Type
Full-time
engineering experience, ideally within real-time or trading environments Experience with WebSockets or SignalR for real-time communication Backend development experience with .NET (C#) and/or Python Strong understanding of REST APIs and microservices architecture Experience with message brokers (e.g. RabbitMQ or Kafka) Knowledge of caching technologies (e.g. Redis ...

Full Stack Developer

Hiring Organisation
Devonshire Hayes Recruitment Specialists Limited
Location
City of London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£45,000 - £65,000 per annum
engineering experience, ideally within real-time or trading environments Experience with WebSockets or SignalR for real-time communication Backend development experience with .NET (C#) and/or Python Strong understanding of REST APIs and microservices architecture Experience with message brokers (e.g. RabbitMQ or Kafka) Knowledge of caching technologies (e.g. Redis ...

Junior Software Engineer

Hiring Organisation
Insight Global
Location
City of London, London, United Kingdom
following skillset: University degree (ideally in Computer Science or related field) Full stack in Microsoft technologies (below): Microsoft stack: Visual Studio, .NET/C#, ASP.NET, Entity Framework. SQL Server: good T-SQL, performance tuning, and SSDT database projects APIs: designing, building and consuming REST services. SDLC/DevOps: Agile delivery ...

Senior Python Developer

Hiring Organisation
TreasurySpring
Location
City of London, London, United Kingdom
looking for... Essential skills and experience: 5+ years experience of developing complex applications using an OO language (ideally Python, but experience in C++/C#/Java/etc would also be considered) Experience working on mission-critical applications, following a robust SDLC Excellent communication and problem-solving skills ...

Full Stack Engineer

Hiring Organisation
Avanade
Location
London Area, United Kingdom
security and performance Harness modern development and Azure DevOps practices including CI/CD, containerization, automated testing Job Qualifications Habilities and experience Programming: C#/.NET, JavaScript/TypeScript Service Development: building web applications and web APIs using .NET and cloud services Cloud: Azure and others Database: (worked with ...

Senior Software Engineer

Hiring Organisation
JSS
Location
City of London, London, United Kingdom
culture of continuous learning, innovation, and engineering excellence Required Experience & Skills Strong experience building full-stack web applications using TypeScript/React and C#/.NET (or similar technologies) Deep understanding of software engineering principles, including modular architecture and design patterns Proven experience designing and developing RESTful APIs and microservices ...

Technical Lead/Engineer Lead - London

Hiring Organisation
Evolve Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£71,000 - £113,000 per annum
stack required ideally: You can expect to work with the following technologies to ensure scalable, high-performance applications: Programming Languages: JavaScript/TypeScript, Java, C# Frameworks: Vue/Angular/React/Node/Next, Spring/Spring Boot, .NET/ASP.NET Cloud platforms: AWS, GCP, Azure CI/ ...

Senior Full Stack Developer (React & C#.NET)

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
/Day (Inside IR35) About the Role Join our dynamic team as a Senior Full Stack Developer, where your expertise in React JS and C# .NET Core will shine! We are looking for a tech-savvy professional with a passion for building scalable applications within the financial sector. This … Front-end: Strong proficiency in React.js, JavaScript/TypeScript, Redux/RTK, and modern UI patterns, develop framework is essential Back-end: Expertise in C# .NET Core, REST APIs, and microservices-based development is essential Python (pyspark): Experience with data pipelines and analytics is a plus. Power BI: Familiarity with ...

Senior Azure Integration Developer

Hiring Organisation
ARC IT Recruitment Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£95,000
experience with Azure Integration Services (APIM, Logic Apps, Azure Functions, Service Bus, Event Grid) Experience delivering containerised workloads in AKS Strong programming capability in C#, .NET, JavaScript or TypeScript Solid understanding of REST APIs, OAuth2 and modern API security practices Experience with SQL and data integration technologies Familiarity with ...

Senior Azure Integration Developer

Hiring Organisation
Arc IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £95,000 per annum
experience with Azure Integration Services (APIM, Logic Apps, Azure Functions, Service Bus, Event Grid) Experience delivering containerised workloads in AKS Strong programming capability in C#, .NET, JavaScript or TypeScript Solid understanding of REST APIs, OAuth2 and modern API security practices Experience with SQL and data integration technologies Familiarity with ...

Lead Full Stack Developer

Hiring Organisation
Goodman Masson
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £100,000 per annum
across the business Requirements Proven experience as a full-stack developer, ideally with experience in a technical lead role Strong proficiency in JavaScript, .NET (C#), and modern frontend frameworks Solid experience with SQL databases and API design and integration Demonstrated leadership ability with strong communication and organisational skills A proactive ...

Full Stack Developer

Hiring Organisation
Lynx Recruitment Limited
Location
South West London, London, United Kingdom
Employment Type
Permanent
Salary
£55,000
Full Stack Developer to build scalable, AI-powered applications on Microsoft Azure. The Role Develop modern UIs using React, TypeScript Build APIs and microservices (C#/.NET or Python) Integrate AI capabilities into web applications Work across Azure services (Service Bus, Event Grid, SQL, Cosmos DB) Deliver secure, scalable, cloud ...

Senior Integration Engineer (Azure)

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £600 per day
mentoring our permanent engineering team. What You Bring Integration Expertise: 5+ years of software development experience building robust APIs (REST, SOAP, JSON, XML) using C#, .NET, JavaScript, or Python. Azure Mastery: Deep, proven knowledge of Azure Integration Services, including API Management, Logic Apps, Service Bus, Azure Data Factory, and Azure ...

Full Stack Software Engineer

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
modifications to open-source UI components Experience enabling data scientists and engineers with Python-based development workflows and tooling Technology Stack: Azure Cloud Services C# (.NET 10) Python React.js and modern JavaScript (ES6+) Snowflake (Data Warehouse) Apache Airflow Terraform dbt SQL Server ...

Full Stack Software Engineer

Hiring Organisation
83zero Ltd
Location
London, Lime Street, United Kingdom
Employment Type
Permanent
Salary
£100000 - £130000/annum
modifications to open-source UI components Experience enabling data scientists and engineers with Python-based development workflows and tooling Technology Stack: Azure Cloud Services C# (.NET 10) Python React.js and modern JavaScript (ES6+) Snowflake (Data Warehouse) Apache Airflow Terraform dbt SQL Server ...

Lead .NET/JS Developer - Perm - Creative Agency

Hiring Organisation
Lorien Resourcing Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
keep pace What we're looking for Strong experience leading technical delivery within a digital agency or consultancy environment A solid backend background in C#/ASP.NET Core , with full-stack awareness Experience across both frontend and backend challenges - reactive frameworks experience welcome Deep familiarity with Azure , including CI/ ...

Principal Technical Consultant - Automation

Hiring Organisation
TEN10 SOLUTIONS LIMITED
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
engaging other senior leaders. Technical Depth: Professional knowledge of object-oriented design patterns and modern languages such as Java, TypeScript/JS, Python, C#, or Scala. Modern Architecture: Solid understanding of cloud services (AWS/Azure/GCP), microservices, observability, Infrastructure as Code, and SRE principles. Tool Agnostic: Proficiency with ...

IT Development Team Lead (Full Stack)

Hiring Organisation
Euro Car Parks
Location
Central London, London, United Kingdom
Employment Type
Permanent
skills, accountabilities and development areas. Desirable Skills: 5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Strong experience in working with Azure (preferably certified) including App Services, Azure Function, Service Bus Experience leading and mentoring small-to-medium hybrid ...

Principal Technical Lead

Hiring Organisation
RSSB
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Qualifications Proven experience as a technical lead on a complex, multi-service platform, with direct responsibility for technical delivery quality and team output. Extensive C# and ASP.NET Core experience, including RESTful APIs, dependency injection, domain modelling, integration patterns, and performance considerations. Experience with Entity Framework Core code-first migrations ...

Python Developer

Hiring Organisation
McGregor Boyall
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £100,000 per annum
work closely with traders, quants, and senior engineers on the development of modern data and analytics tooling used across the business. The environment is C# and Python-focused, with increasing adoption of cloud-native data technologies including Databricks, whilst also integrating with established quantitative pricing and risk platforms such ...

Senior Software Engineer

Hiring Organisation
Caspian One
Location
London Area, United Kingdom
services (buy‐side preferred, sell‐side also welcome). Solid background in treasury, collateral, middle‐office, or financial operations technology. Strong programming skills in C# + Python Front‐end experience with Vue.js , React , or Angular . Experience with databases such as SQL Server, Databricks, or Azure SQL. Strong understanding ...

Full Stack Engineer - Inside IR35 - Hybrid

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £570 per day
pain points, and translate them into technical solutions Strong problem-solving skills with a systems-thinking mindset Highly Valuable Experience Experience with .NET, ideally C# Experience building internal platforms or developer tooling (e.g., PaaS) Experience supporting data science or analytics workflows Experience with CI/CD pipelines (e.g., Azure DevOps ...

Principal Engineer (.Net) - up to £100,000 + Bonus - Hybrid

Hiring Organisation
Involved Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £100,000 per annum
engineers and strengthen engineering culture across the organisation Essential Skills for the Principal .NET Engineer: Deep hands-on expertise in ASP.NET Core, Web API, C#, Entity Framework Strong experience with Azure, Kubernetes, Kafka and Microservices architecture Experience with MongoDB, cloud integrations and distributed systems Strong knowledge of JavaScript/TypeScript ...

Senior .NET Engineer

Hiring Organisation
Whitehall Resources
Location
City of London, London, United Kingdom
lead refactoring and modernization where needed. • Implement comprehensive observability (metrics, distributed tracing—OpenTelemetry) and SLOs for critical services. Key Skills: • .NET Expertise: .NET 8, C#, ASP.NET Core, RESTful APIs, background jobs, async programming, dependency injection, unit/integration testing frameworks. • Security Concepts: OWASP Top 10/ASVS, threat modelling, OAuth2 ...

Senior SharePoint Developer and Administrator

Hiring Organisation
Ryder Reid Legal Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
/Online. Proven SPFx development skills. Proficiency in TypeScript, JavaScript, React, HTML5, CSS3. Strong REST API and Microsoft Graph integration experience. Solid C#/.NET framework experience. Deep knowledge of SharePoint on-prem administration, performance tuning, patching and troubleshooting. Experience with BCS and creating External Content Types. Strong SQL Server ...