326 to 350 of 544 C# Jobs in London

a week in the office Salary- £85k - £92k About the Role Head Resourcing are recruiting for an experienced Senior Software Development Engineer in Test (SDET) with advanced skills in C#, Playwright, and TypeScript. In this role you will lead the design and implementation of scalable test automation frameworks and contribute to both manual and automated testing for high-impact web … sectors such as energy and electronic and mineral recycling. This role, unfortunately, does not offer sponsorship. Key Responsibilities Develop and maintain robust test automation frameworks using Playwright (TypeScript/C#) Conduct functional and automation testing (UI, API, regression, cross-browser/platform) Integrate automation into CI/CD pipelines (e.g. Jenkins, Azure DevOps) Collaborate with cross-functional teams in Agile … data strategies and detailed test reports (such as Allure, Extent Reports) Required Skills Strong experience in test automation and functional testing Expertise in Playwright with JavaScript/TypeScript and C# Experience testing SPAs, APIs (Playwright API, Postman, REST Assured,) Familiarity with Mocha, Jest, BDD tools like Cucumber (preferred) CI/CD knowledge (Git, Jenkins, Azure DevOps) What's on Offer More ❯

Job Role: Product Engineer (backend C# .net core) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£85k per annum About The Client: Our client builds AI-driven voice automation for regulated industries, helping companies reduce costs while meeting strict compliance standards. Founded by experienced engineers and repeat … startup founders, their team combines deep technical expertise with a fast-moving, execution-focused approach. Overview: Were hiring on behalf of our client for a Product Engineer (backend C# .net core) to join their growing team. The role will focus on backend development for a platform that blends telephony, voice AI, and LLMs to create next-generation voice automation features. … a startup environment, this role is for you. Key Responsibilities: Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. More ❯

Job Role:Product Engineer (backend C# .net core) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£85k per annum About The Client: Our client builds AI-driven voice automation for regulated industries, helping companies reduce costs while meeting strict compliance standards. Founded by experienced engineers and repeat … startup founders, their team combines deep technical expertise with a fast-moving, execution-focused approach. Overview: Were hiring on behalf of our client for a Product Engineer (backend C# .net core) to join their growing team. The role will focus on backend development for a platform that blends telephony, voice AI, and LLMs to create next-generation voice automation features. … a startup environment, this role is for you. Key Responsibilities: Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. More ❯

s trading desks Delivering fast-paced agile high quality software changes and solutions, running Scrums and Sprints and creating and deploying Releases.Providing guidance and advice on .Net, .Net Core, C#, Java, Python, and other development tools and languages, their usage and upgrades, and leveraging them to maximise the business benefit.Frequent .Net/C# tasks such as delivering new projects, improving More ❯

trading desks Delivering fast-paced agile high quality software changes and solutions, running Scrums and Sprints and creating and deploying Releases. Providing guidance and advice on .Net, .Net Core, C#, Java, Python, and other development tools and languages, their usage and upgrades, and leveraging them to maximise the business benefit. Frequent .Net/C# tasks such as delivering new projects More ❯

Backend Software Engineer/Developer (Windows C/C++, C#) London to £70k FTC Are you a skilled Backend Software Engineer with strong C++ skills? You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefits. As a Backend Software Engineer you will join an … software systems that require real-time and low latency, maintaining data feeds and developing key underlying transport protocols for data transmission. The platform has been built with C++ and C# deploying to AWS and requires high scalability and low latency - they currently handle 40 billion messages per day. Location/WFH: You'll join colleagues in the City office three … career development including personalised budget Gain valuable finance/exchange connectivity experience Apply now to find out more about this Backend Software Engineer/Developer (Windows C/C++, C#) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come More ❯

Backend Software Engineer/Developer (Windows C/C++, C#) London to £70k FTC Are you a skilled Backend Software Engineer with strong C++ skills? You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefits. As a Backend Software Engineer you will join an … software systems that require real-time and low latency, maintaining data feeds and developing key underlying transport protocols for data transmission. The platform has been built with C++ and C# deploying to AWS and requires high scalability and low latency - they currently handle 40 billion messages per day. Location/WFH: You'll join colleagues in the City office three … career development including personalised budget Gain valuable finance/exchange connectivity experience Apply now to find out more about this Backend Software Engineer/Developer (Windows C/C++, C#) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come More ❯

Purpose of Role We are looking for a C# .NET Developer with experience to join the TAROT (Trading and Risk Optimization Technologies) team in London. The TAROT team develops a cutting-edge analytics and revenue optimization platform which enables traders, client managers and senior management to manage risk, generate revenue opportunities, and analyze their businesses. The project has been a … created approximately 5 years ago, and is in a stage of expansion into additional business lines as a result. Major Responsibilities We require a developer with experience in the C# programming language and ideally ASP.NET Core, to help further expand the application into additional business lines. The candidate will have some experience working in financial services front-office/middle … back-end infrastructure, such as data services and web APIs, to enhance the application as a whole. Knowledge of Angular would also be a plus, but less important than C# knowledge. The existing team is very experienced and there is a great opportunity to learn both on the business side and from a technology perspective. Level of Education/Qualifications More ❯

/d outside IR35 Central London (Tower Hill tube) 4 days in the office/1 day from home Our client delivers futures trading services. We are seeking a C# Analyst Developer to join on a contract basis. This role focuses on maintaining and enhancing software solutions that support a range of business operations, with a particular emphasis on regulatory … of front-office and back-office platforms, and data integration. Candidates must have a strong understanding of regulatory reporting from both a business analysis and developer perspective. Key Skills: C# Regulatory Reporting EMIR/MiFIR .net framework SQL Server T-SQL Kafka React.js Front-office/back-office trading applications: Fidessa, TT, CQG. GMI, ETDs, CFDs, fixed income, FX, trade More ❯

/d outside IR35 Central London (Tower Hill tube) 4 days in the office/1 day from home Our client delivers futures trading services. We are seeking a C# Analyst Developer to join on a contract basis. This role focuses on maintaining and enhancing software solutions that support a range of business operations, with a particular emphasis on regulatory … of front-office and back-office platforms, and data integration. Candidates must have a strong understanding of regulatory reporting from both a business analysis and developer perspective. Key Skills: C# Regulatory Reporting EMIR/MiFIR .net framework SQL Server T-SQL Kafka React.js Front-office/back-office trading applications: Fidessa, TT, CQG. GMI, ETDs, CFDs, fixed income, FX, trade More ❯

.net Developer MiFIR/EMIR regulatory reporting C# SQL Server T-SQL Kafka React.js 6-monthly rolling contract £550 - £650 p/d outside IR35 Central London (Tower Hill tube) 4 days in the office/1 day from home As an established tech recruitment partner to a global organisation, we are seeking a .net Developer with experience of regulatory … to free up established team members to work on new dev, you will be working on a variety of apps. This is a 6-month rolling assignment. Key Skills: C# Regulatory reporting (MiFIR/EMIR).net Visual Studio SQL Server T-SQL Kafka React.js Front-office/back-office trading applications: Fidessa, TT, CQG. GMI, ETDs, CFDs, fixed income, FX More ❯

.net Developer MiFIR/EMIR regulatory reporting C# SQL Server T-SQL Kafka React.js 6-monthly rolling contract £550 - £650 p/d outside IR35 Central London (Tower Hill tube) 4 days in the office/1 day from home As an established tech recruitment partner to a global organisation, we are seeking a .net Developer with experience of regulatory … to free up established team members to work on new dev, you will be working on a variety of apps. This is a 6-month rolling assignment. Key Skills: C# Regulatory reporting (MiFIR/EMIR).net Visual Studio SQL Server T-SQL Kafka React.js Front-office/back-office trading applications: Fidessa, TT, CQG. GMI, ETDs, CFDs, fixed income, FX More ❯

developing features for the Welsh Nursing Care Record (WNCR) and related applications-supporting the delivery of modern, tech-enabled healthcare. Key Responsibilities: Develop software components using the .NET stack (C#), working across UI, API, messaging, and integrations. Collaborate with Business Analysts, Product Specialists, and other developers within a well-structured Scrum team. Mentor junior developers and contribute to technical best … practices. Lead on software delivery applying sound design principles (SOLID, OOP, etc.). Required Skills & Experience: Strong experience developing with. NET/C# Excellent understanding of Object-Oriented Programming Hands-on experience with T-SQL and SQL Server Familiarity with: JavaScript, jQuery Web APIs/XML Web Services Agile/Scrum delivery Team Foundation Server (TFS) Dependency Injection (e.g., Unity More ❯

across infrastructure, databases, and applications Oversee Azure deployments-ensuring availability, scalability, and cost efficiency Write and optimise SQL queries to investigate and correct data issues Build automation tools in C# to streamline processes and support diagnostics Monitor cloud health (CPU, memory, storage) and create alerts/dashboards for performance insights Collaborate closely with Dev and Support teams to triage and … in a third-line support or cloud ops role Strong hands-on knowledge of Azure resource management and monitoring Advanced SQL for data analysis and issue resolution Proficiency with C# for scripting, debugging and tool creation Good understanding of app troubleshooting across infrastructure and DB layers Familiarity with Azure Monitor, App Insights, or similar platforms Experience supporting B2B cloud platforms More ❯

C++ Developer/Backend Software Engineer (Windows C/C++, C#) London to £70k FTC Are you a skilled C++ Developer? You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefits. As a C++ Developer you will join an Agile team focussed on building … software systems that require real-time and low latency, maintaining data feeds and developing key underlying transport protocols for data transmission. The platform has been built with C++ and C# deploying to AWS and requires high scalability and low latency - they currently handle 40 billion messages per day. Location/WFH: You'll join colleagues in the City office three More ❯

Skills and Competencies Proficiency in at least one and preferably two programming languages (e.g., Python, Rust, C/C C#). Cloud Platforms: Hands-on experience with AWS, Azure, or GCP, and familiarity with cloud-native architecture. Hands-on experience managing large-scale Kubernetes deployments. Expertise managing infrastructure as code using terraform. Problem-Solving Skills: Strong analytical and problem-solving. More ❯

average 1-2 days per week, with flexibility project phase dependant). Roles and Responsibilities Understanding technical business requirements and mapping processes/potential solutions in D365 Hands on C#/Javascript programming - developing custom plugins, work flows Utilising Power platform for low code customisations - developing power automate flows, creating power apps .NET API/integration projects Skills and Qualifications … Engagement/CRM - customisation/configuration of system advancements, creating custom plug-ins/work flows Diverse modular exposure, with a focus on D365 sales functionality Technical strengths in C#, JavaScript, .NET programming Strengths in Power Platform customisation - utilising power automate, developing Power Apps Integration's experience - .NET/Azure Confident stakeholder engagement skills - analysing business requirements, designing system solutions More ❯

average 1-2 days per week, with flexibility project phase dependant). Roles and Responsibilities Understanding technical business requirements and mapping processes/potential solutions in D365 Hands on C#/Javascript programming - developing custom plugins, work flows Utilising Power platform for low code customisations - developing power automate flows, creating power apps .NET API/integration projects Skills and Qualifications … Engagement/CRM - customisation/configuration of system advancements, creating custom plug-ins/work flows Diverse modular exposure, with a focus on D365 sales functionality Technical strengths in C#, JavaScript, .NET programming Strengths in Power Platform customisation - utilising power automate, developing Power Apps Integration's experience - .NET/Azure Confident stakeholder engagement skills - analysing business requirements, designing system solutions More ❯

engineering ecosystem: building up the infrastructure and deployment pipelines, writing new ELT pipelines, performing transformations and preparing the data for analysis. Tech stack includes: Databricks, Azure Cloud, Python, SQL, C#, Azure DevOps pipelines, Terraform, Azure Data Factory (ADF) Location: Fully Remote - Need to be based in the UK Rate: £400 per day Outside IR35 3 months - part time 2 days More ❯

looking for exceptional graduates to join their growing team based in Newcastle. Essential skills needed include: Programming and technology skills, including an understanding of and recent programming experience in C#/.Net or other object orientated languages such as Java or Python Understanding of SQL databases A strong enthusiasm for programming and technology and an appetite to work in a More ❯

approach to achieve exceptional results. Provide support for complex issues where necessary. Skills and Qualifications Strong experience with Microsoft Dynamics 365 CRM, including customisation's and configurations. Proficiency in C#, .NET and JavaScript for plugin development and extending the platform. Proven track record in automating business processes within D365. Excellent problem-solving skills and the ability to collaborate effectively with More ❯

approach to achieve exceptional results. Provide support for complex issues where necessary. Skills and Qualifications Strong experience with Microsoft Dynamics 365 CRM, including customisation's and configurations. Proficiency in C#, .NET and JavaScript for plugin development and extending the platform. Proven track record in automating business processes within D365. Excellent problem-solving skills and the ability to collaborate effectively with More ❯

hosted solutions. Strong knowledge of MS Azure, including monitoring tools, resource management, and cost optimisation. Advanced SQL skills, including the ability to write, debug, and optimise queries. Proficiency with C# for troubleshooting application code, debugging issues, and working with developers on issue resolution. Solid understanding of application troubleshooting, including database and infrastructure-related issues. Familiarity with monitoring tools like Azure More ❯

C++ Developer will be exposed to: Developing a robust platform integrated on high-performance, AWS deployed systems. Building a high-throughput C++11/14 system. An opportunity to learn C#/Java/Python on the job, the team likes to integrate other tech as they go. You will be responsible for multiple projects from the early design phase to More ❯

priority projects Requirements: Essential: Expert-level experience in full-stack development (Mainly focused on the frontend) Strong knowledge of modern JavaScript frameworks Full Stack Experience (Using Node.js, Python or C#) Track record of architecting and delivering complex systems Ability to work autonomously in a fast-moving environment Background in enterprise SaaS product development Desirable: Experience with Azure and Docker Familiarity More ❯