1 to 25 of 27 Part-Time .NET Core Jobs in the City of London

Job Title: Senior .NET Developer (12-Month Contract) Location: 100% Remote Inside IR35 We are looking for an experienced and talented Senior .NET Developer to join our dynamic development team on a 12-month contract with the potential for extension. As a Senior .NET Developer, you will … in creating high-quality, scalable, and resilient solutions while mentoring junior team members and supporting existing initiatives. Responsibilities: Create and adapt new C#/.NET Core services to meet evolving business requirements. Mentor and coach existing team members through pair programming , peer reviews , and team talks , helping … them improve their C#/.NET Core skills. Support and enhance current systems and initiatives during office hours, ensuring that service level objectives are met. Maintain a strong focus on quality, reusability, clean architectures, security, and resilience across the full application lifecycle. Collaborate with the Lead Developer More ❯

Job Description: ·Proven experience as a .NET Core Developer with expertise in Microsoft Azure. ·Proficiency in C# and .NET Core for server-side development. ·Excellent Coding skills and best practices ·Strong experience of Azure services , including but not limited to Azure App Service, Azure … solving and debugging skills. ·Excellent communication and teamwork skills. ·Self-motivated with a passion for learning and staying current with industry trends. Relevant Experience: .Net Core, Azure functions, Azure Functions, Microservice Architecture. More ❯

both internal operations and client-facing services. Our tech stack is built on a modern, stable foundation — including React , Tailwind CSS , C# 9 , and .NET Core — and we're focused on scaling feature delivery and enhancing technical maturity. You’ll be joining a team that’s moved … responsive and accessible web interfaces using React.js (Next.js) , JavaScript , HTML5 , and Tailwind CSS . Develop backend services and RESTful APIs using C# 9 and .NET Core . Interact with MSSQL databases via stored procedures and schema design. Own tasks end-to-end, from development through deployment, testing … for; 3+ years of hands-on experience in full stack web development . Strong knowledge of JavaScript , React.js , and Next.js . Solid experience building .NET Core Web APIs with C# 9 . Proficiency in SQL Server (MSSQL), including stored procedures and schema management. Comfort with Tailwind CSS More ❯

base of £70,000 + benefits and its hybrid working. As a senior technical lead, you’ll be responsible for full-stack development using .NET Core, Power Platform (Power Apps, Power Automate, Power BI), Azure Functions, and modern front-end frameworks like React or Angular. You’ll … collaborate with cross-functional teams, and lead projects from concept to deployment. What You’ll Do Develop modern applications and APIs with C#/.NET Core and Azure Build responsive UIs using Fluent UI, React, or Angular Lead Power Platform development and system integrations Drive DevOps best … Guide and mentor a distributed team of developers To be considered for this role, you will need: Proven experience in Microsoft tech stack (C#, .NET Core, Azure, Power Platform) Strong front-end skills (React, Angular, JavaScript/TypeScript) Expertise in SQL Server and API development Desirable: Familiarity More ❯

operations across voice, email, chat and SMS, enabling humans in the loop where necessary. Overview: We’re hiring for a Product Engineer (backend C# .net core) to join our founding team. The role will focus on backend development that blends email, chat, telephony, voice AI and LLMs. … 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 … and security in systems handling sensitive financial or personal data. Requirements/experience: 5+ years of software engineering experience. Proven backend experience with C# (.NET Core) in Linux-based production environments. Comfortable navigating ambiguity and working with minimal supervision. Strong SQL knowledge, with experience using PostgreSQL in More ❯

My client is an instantly recognisable consultancy who require a C# .Net Developer with .Net Core, RESTful web services, microservices and knowledge of building solutions in an Azure Containerised environment to join a business-critical GDS programme for a high profile client Key Requirements: Proven experience … as a C# .Net Developer with working knowledge of a Government Digital Service (GDS) environment Strong knowledge and working use of .Net Core and RESTful web services. Recent experience developing Microservice based solutions Worked on object-oriented design patterns (OOAD etc) and design principles (kiss/ More ❯

onsite in Central London High autonomy, greenfield projects, and an inclusive team culture What you’ll be doing: Own and evolve backend systems in .NET Core/C# Lead on platform performance, automation, observability, and CI/CD Build infrastructure across AWS and Azure using Terraform and … Docker Help introduce Go and Python into the stack Mentor engineers and drive engineering best practices ⚙️ Tech environment: .NET Core/C#, ASP.NET Core AWS, Azure, Lambda, DynamoDB, Azure DevOps Terraform, Docker, CI/CD pipelines Bonus: Go, Python, Cloudflare, React, TypeScript Ready to shape More ❯

Full Stack Developer .NET, C#, Angular Material, Angular, UI, HTML5, CSS, NgRX, RXJS, .NetCore, SQL, Microservices London – Perm Role Fin-Tech - Portfolio management – £50000 - £80000 Harrington Starr has partnered with a Software Provider that is looking to hire a Senior Software Engineer with FullStack Development experience using Angular and … Angular Material and C#, .NET Core to come and work on a Greenfield Project where you will take full ownership on a major UI project. This is a great opportunity for a Full Stack Software Engineer to take the next step where you will join a highly … will be responsible for all front to back software development of a major Portfolio Management system. Key Skills: Full Stack Developer with C# and .NET Core backend Excellent knowledge of Angular Development Excellent experience of Angular Material Strong Development building User Interfaces (UI) and some experience of More ❯

but significant influence over technical decisions and standards. Key Technical Skills Front-End Development : HTML5, CSS3, JavaScript, TypeScript, React (including Next.js) Back-End Development : .NET Framework, .NET Core, ASP.NET Core, Node.js, C# Database Management : SQL Server, with additional experience in NoSQL databases (e.g., MongoDB …/CD : Azure DevOps, automated pipelines, infrastructure as code Security : CSPs, secure cookies, XSS/CSRF mitigation, OAuth2, SSO, SAML, encryption SEO & Performance : Core Web Vitals, metadata structuring, sitemap configuration, crawl budget API Design : RESTful APIs, OpenAPI/Swagger, GraphQL CMS : Experience with various CMS platforms; headless CMS More ❯

Staff Software Engineer | Lead Engineer | Principal Engineer | £120K | Hybrid - London Staff Software Engineer – .NET | London (Hybrid) We’re working with a high-growth, tech-driven company undergoing a major platform modernization and are looking for a Staff Software Engineer to join their mission-critical engineering team. This is a … visibility and impact across the organization. You’ll work on large-scale systems, contributing to the design and development of modern, scalable, cloud-native .NET applications. You'll collaborate closely with platform teams, influence tech strategy, mentor engineers, and help evolve systems that serve both public-facing and internal … users. Key Responsibilities Enhance and modernize large .NET systems for performance, reliability, and scalability Lead architecture and development of backend services using C#, ASP.NET, .NET Core Automate infrastructure, CI/CD pipelines, and cloud operations (AWS/Azure) Promote engineering best practices, security, and observability Mentor More ❯

are actively investing in the modernisation of their technology stack to support growth and long-term capability. The Role We are seeking an experienced .NET Architect to join the technology team of a leading insurance organisation. This is a permanent role with long-term potential, suited to a technically … and the ability to contribute across the software development lifecycle. Key Responsibilities Architect, design, and develop high-quality modules and applications using ASP.NET and .NET Core Lead the technical direction of projects, ensuring scalability, maintainability, and performance Collaborate with stakeholders across business and technology to define solution … and Agile development practices Troubleshoot and resolve production issues when required Essential Skills & Experience In-depth expertise in ASP.NET (version 3.1 or higher) and .NET Core Familiarity with insurance domain applications or platforms (London Market experience strongly preferred) Full-stack development experience with a strong command of More ❯

Senior C# Developer - Fixed Income Key Technologies: C#, .NET, .NET Core, Azure, SQL London Perm Role | Hybrid Working Structure £80,000 - £110,000 Harrington Starr has partnered with a global Investment Bank who are looking to hire a seasoned Senior C# Developer with extensive experience developing More ❯

Senior C# Developer Key Technologies: C#, .NET, .NET Core, Azure, SQL London Perm Role | Hybrid Working £80,000 - £110,000 Harrington Starr has partnered with a global Investment Bank who are looking to hire a seasoned C# Developer with extensive experience developing Front Office - Fixed Income More ❯

evolution of our Documents & Biometrics digital identity verification product. This cutting-edge solution utilizes AI technologies for intelligent document processing, serving as the core engine behind our platform. We prioritize writing high-quality code and adhere to the best CI/CD principles, ensuring excellence in enterprise applications … Android, iOS, Mac) using CMake. Utilize unit testing frameworks like GTest/Catch and open-source libraries such as Boost and OpenCV. Work with .NET Core and Restful API, and proficiency in scripting languages like Python. Implement complex object-oriented patterns, public interfaces, and architectural patterns. Demonstrate … proficiency in modern C++ development and cross-platform development. Familiarity with unit testing frameworks, open-source libraries, and code review processes. Working knowledge of .NET Core, Restful API, and scripting languages. Passion for problem-solving and a commitment to continuous improvement. Experience in Version Control System (preferably More ❯

A leading global trading firm is looking for a C# .NET Developer to join its trading systems team. You’ll work across front office, risk, and operations to build and support business-critical systems that handle real-time trade execution, messaging, and integration. This role focuses on developing high … performance services using the .NET framework, integrating with FIX protocols, and leveraging message queuing technologies such as RabbitMQ or Kafka. You’ll play a key role in improving trade flow automation and operational efficiency across the front-to-back lifecycle. Key Responsibilities: Design and develop .NET-based services … e.g., TFS Build, Azure DevOps) Troubleshoot and resolve production issues in a low-latency trading environment Required Experience: Strong development experience in C# and .NET Core/.NET Framework Hands-on experience integrating FIX protocols (e.g., QuickFIX/n, OnixS) Proficiency with message brokers (RabbitMQ, Kafka More ❯

Collaborate with global teams, align with Head Office on process and governance. Oversee BAU support and manage rota coverage for trading hours. Tech Stack .NET (C#, .Net Core, WPF), Entity Framework Angular/AngularJS SQL Server, Oracle, MongoDB Bloomberg API, RMDS, Eikon Microservices, Visual Studio, JetBrains … office or trading systems. Solid understanding of derivatives, risk (Greeks), and curve construction. Hands-on knowledge of options theory and volatility surfaces. Preferred Tech .NET, C#, WPF, Angular Familiar with frameworks (Unity, Prism, etc.) Commodities or interest rate products knowledge a plus Environment Hybrid setup (minimum 3 days in More ❯

wikis), promote best practices, and reduce operational risk Propose innovative solutions, new business capabilities, and system improvements Experience: Proven background in software development using .NET (C#, .Net Core, WPF, Entity Framework) Front-end experience with Angular/AngularJS Strong database skills with SQL Server, Oracle, MongoDB More ❯

Synechron is looking for a Senior .NET Engineer to join their Engineering and AI Practice to work on a multi-year, AI programme of work within a leading financial institution. The role is responsible for delivering building robust and reliable product which will act as single stop solution for … retrospective meetings Experience: 8+ years of experience in all phases of software development including design, coding, testing, debugging, and implementation Strong knowledge of the .NET framework, object-oriented programming, multithreading, C# with exposure of VB.NET, ASP.NET MVC, HTML5, CSS3, ReactJS, Redux, WebPack Expertise in development of Azure cloud based … applications using C#, .Net Core Experience with front-end frameworks (ReactJS, etc) Expertise in development of REST based WebAPIs Expertise in writing Unit Test Cases using MS Test or nUnit Understanding of agile Methodology Preferred: Understanding of SAST tools like HP Fortify, SonarQube and their integration with More ❯

stack development. Required Skills and Experience: Software development, with a strong focus on both front-end and back-end technologies. Expertise in C# and .NET Core for server-side development. Strong experience with React and modern JavaScript (ES6+), including state management libraries like Redux or Context API. More ❯

development lifecycle (SDLC). Customer-facing communication experience is a plus DESIRED SKILLS AND EXPERIENCE RabbitMQ Redis OAuth Azure DevOps feature stack SDLC DotNet Core 3 and above, C# JavaScript HTML CSS By applying, I confirm I have read and accept TransPerfect's Privacy Policy More ❯

Senior .NET Engineer - Fully Remote (with quarterly visits to London) - Up to £100k We're working with a leading Fintech company that specialises in developing payment platforms across a range of industries. As they continue to grow, they're looking to strengthen their .NET development team to drive … greenfield projects. With nearly a decade in the industry, they have an impressive portfolio of clients. This role is ideal for Senior to Principal .NET Engineers who are eager to engage in architectural decisions, contribute to innovative designs, and challenge requirements with a proactive mindset, all while showcasing exceptional … performance to ensure optimal user experiences Document workflows and track performance metrics Manage and resolve incidents Required Skills & Experience: Expertise in C# Proficient with .NET Core and later (currently using .NET8) Hands-on experience with Azure and microservices Strong knowledge of API development and integration Familiarity with More ❯

This role offers the opportunity to lead transformative projects in a fast-paced, purpose-driven environment Centered on a tech stack that includes C# .NET Core, AWS, and event-driven microservices, this position is tailored for engineers ready to thrive in modern cloud-based ecosystems. While .NET … culture of growth and excellence. Ideal candidates hold a Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field. A .NET, C# and backend or full-stack development is essential, complemented by strong problem-solving skills, an agile mindset, and excellent communication. Apply below to More ❯

with Azure PaaS Services (Azure Blob storage, Azure service bus, Azure functions etc.) Hands on coding experience with Angular 16 or above. Experience in .NET Core, API and microservices development. Experience with COSMOS DB, Azure SQL server or NoSQL or a mix of all these. Azure Pipeline More ❯

wider technology team. Skills and experience • Commercial experience and knowledge of Power Platform including Power Apps, Power Automate and Power BI • Commercial experience with .NET Core and C# • Commercial experience of Azure including Azure Functions Integration • Commercial experience of frontend development with either Angular or React and More ❯

basic salary depending on experience. Market leading bonus structure. What you will need: A strong background with C# development. Strong commercial experience with .NET Core. A strong understanding of SQL Server. 2:1 or above in Computer Science or related subject. Experience working on reporting and data analysis platforms More ❯