15 of 15 Senior C# .NET Developer Jobs in London

, you will play a crucial role 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, Delivery Manager, and Product Owner to design service improvements and new … and being an active member of an agile and self-improving team. Strong diagnostic skills and experience providing levels of support when issues arise. Extensive experience ( 5+ years ) with C# and .NET Core . Deep understanding of Object-Oriented (OO) concepts and SOLID design principles . Proven experience developing in Microsoft Azure and using Terraform . Strong More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, west london col-narrow-left Client: WebX Systems Ltd. Location: west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As a privately … help lead the transition toward cloud-native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving forward new development. Technology Stack Legacy C#, .NET Framework, WinForms, WCF Client-Server Architecture, MS SQL Server Modern .NET 9, Blazor, Minimal APIs Entity Framework, Redis, RabbitMQ Aspire (.NET), Cloud More ❯

Social network you want to login/join with: Senior Full Stack C# .NET Developer, south west london col-narrow-left Client: WebX Systems Ltd. Location: south west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job … Description: Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB, UltraAuthor, UltraXML , and UltraPortal —are used globally and combine proven legacy systems with cutting-edge, cloud-native innovations. As … help lead the transition toward cloud-native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving forward new development. Technology Stack Legacy C#, .NET Framework, WinForms, WCF Client-Server Architecture, MS SQL Server Modern .NET 9, Blazor, Minimal APIs Entity Framework, Redis, RabbitMQ Aspire (.NET), Cloud More ❯

Senior Developer – .NET, C#, SQL Server, API, Azure Devops, MDM/ETL Exp: 5+ yrs Work Timing: 9 AM to 5 PM EST(2 PM to 10.00 PM UK) Work Location: Remote Job Description Senior Developer – .NET, C#, SQL Server, API, Azure Devops, MDM/ETL … Duties to be performed Deep knowledge/experience in .NET back-end development with C# and SQL to design, develop and implement solutions • Experience with Entity Framework or similar object-relationship mapping frameworks • Experience building and managing RESTful APIs and SQL Server objects • Experience with Azure DevOps pipelines for build and release management is desired, but experience More ❯

Senior Technical Java and C# .net Software Developer We are currently recruiting a Java with C# .net Senior Software Developer – who can be the lead in the team. You must have at least 5 to 7 years proven track record of developing software with Java and … C# .net framework coupled with SQL Server. Ability to own and drive forward Omni channel technical solutions and technical architecture from an IT perspective (with direction from Head of IM, Consumer & Brands) o Ownership of FM Digital Technical architecture including the ongoing review of overall FM Omni technical design, structure and future-fit. Project lead on any … business acumen, and customer focus. · Provide governance for troubleshooting complex system issues as necessary · Develop or contribute to business cases, roadmaps and proposals which may include presentations to senior management. · Collaboration with Business, Technical, and Security Architects, to manage risk identification and risk mitigation tactics associated with the designs. Role-specific knowledge: · 5+ years of senior More ❯

Job Description Senior Technical Java and C# .net Software Developer We are currently recruiting a Java with C# .net Senior Software Developer - who can be the lead in the team. You must have at least 5 to 7 years proven track record of developing software with … Java and C# .net framework coupled with SQL Server. Responsibilities: Ownership of FM Digital Technical architecture including the ongoing review of overall FM Omni technical design, structure and future-fit. Project lead on any future re-platforming for FM.com. Be the technology lead managing the 'day to day' from a technical perspective. Ensure all technical solutions are … business acumen and customer focus. Provide governance for troubleshooting complex system issues as necessary. Develop or contribute to business cases, roadmaps and proposals which may include presentations to senior management. Collaboration with Business, Technical, and Security Architects, to manage risk identification and risk mitigation tactics associated with the designs. Role-specific knowledge: 5+ years of senior More ❯

you want to advance the world of fintech, we’d like to ask you: Are you FIS? About the role: We are looking for an experienced Senior C# .NET Developer to help grow and enhance our PTP software platform. The candidate will work on strategic enhancements to the platform as well as on … a leading-edge, cloud-based Securities Processing solution that provides trade lifecycle processing for a wide range of global financial institutions. About the team: As a Senior C# .NET Developer, you’ll be part of our PTP Platform development group. The group is broken into smaller scrum teams that each hold responsibility for … functionality. You’ll become involved with all phases of the development lifecycle and take ownership of key functional areas. What you will be doing: As a Senior C# .NET Developer, you will be involved in: Analysis of user requirements and translation into solution design using the most appropriate technique for the job (including More ❯

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet … external reporting/tradeflow and pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies ( C#, ASP.NET Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested More ❯

Summary: A boutique prop trading firm with a strong focus on high quality technology and systematic and quant trading models are looking for a Senior C# Developer to join their small, agile, London-based team. With zero red tape or bureaucracy often associated with bigger buy-side firms and investment banks, this London-based team … of engineers, researchers, modellers and traders know how to get things done in a cutting-edge market. Working next to the business, the successful C# Developer will be working with vast, complex data sets, and will be building algorithmic trading models and infrastructure in C#/.NET Core and SQL, directly with London-based … quants and traders. Requirement s: Degree-level education in STEM subject, preference for Computer Science Strong programming experience in C# and SQL Experience with vast data sets with SQL (or equivalent) Experience in multi-threaded environments and networking (TCP/UDP) desired but not essential Benefits: Market-leading compensation including competitive annual bonus in London Greenfield projects available with More ❯

Job Description: Summary: A boutique prop trading firm with a strong focus on high quality technology and systematic and quant trading models are looking for a Senior C# Developer to join their small, agile, London-based team. With zero red tape or bureaucracy often associated with bigger buy-side firms and investment banks, this London … based team of engineers, researchers, modellers and traders know how to get things done in a cutting-edge market. Working next to the business, the successful C# Developer will be working with vast, complex data sets, and will be building algorithmic trading models and infrastructure in C#/.NET Core and SQL, directly with … London-based quants and traders. Requirement s: Degree-level education in STEM subject, preference for Computer Science Strong programming experience in C# and SQL Experience with vast data sets with SQL (or equivalent) Experience in multi-threaded environments and networking (TCP/UDP) desired but not essential Market-leading compensation including competitive annual bonus in London Greenfield projects available More ❯

Social network you want to login/join with: Senior C# (.NET) Developer with search ranking (Apache Solr) experience to build microservices and queries for search indexing in an AWS environment, London col-narrow-left Client: S.i. Systems Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right … Job Reference: 56e5100d2bd4 Job Views: 2 Posted: 02.06.2025 Expiry Date: 17.07.2025 col-wide Job Description: Our Client is seeking a Senior C# (.NET) Developer with search ranking (Apache Solr) experience to build microservices and queries for search indexing in an AWS environment. Fully remote role that can be worked anywhere within Canada. … Must Haves: 8+ years as a Software Developer using Object-Oriented Design (OOD) Most recent 3 years primarily focused on C# (.NET) Experience with Apache Solr including changing ranking order, key areas, adding plug ins and building custom analyzers Experience working in cloud environment, AWS preferred but open to Google Cloud or Azure Nice to More ❯

Senior C# Developer/Software Engineer (C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As … a Senior C# Developer you will architect and build highly performant and scalable solutions using the Microsoft tech stack and SOLID design principles, collaborating with cross functional Agile project teams in 2 week Sprints, you'll be an advocate of best practice and ensure software is delivered to schedule. There's a host of new … from home three days a week. About you: You are an experienced Software Developer/Engineer with a strong knowledge of modern best practice You have strong C# backend development skills, ideally also Python coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge More ❯

Senior C# Developer/Software Engineer (C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As … a Senior C# Developer you will architect and build highly performant and scalable solutions using the Microsoft tech stack and SOLID design principles, collaborating with cross functional Agile project teams in 2 week Sprints, you'll be an advocate of best practice and ensure software is delivered to schedule. There's a host of new … from home three days a week. About you: You are an experienced Software Developer/Engineer with a strong knowledge of modern best practice You have strong C# backend development skills, ideally also Python coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge More ❯

Senior C#.NET Developer … Front Office The Front Office (Fixed Income) software development team requires an agile and versatile specialist who is a team player with extensive expertise in .NET/C# software development. The role demands an experienced individual comfortable working closely with a variety of front office stakeholders globally. Role Details Title: Senior Developer (Software … Engineer) Technical Stack: C#.NET, .NET Core, SQL Server Type: Permanent Salary: £88,000 - £110,000 Location: London City and hybrid home working Focus: Front Office Fixed Income Role Summary Work closely with the Front Office (specifically within Fixed Income) to build and develop innovative software solutions. Reporting directly to the Head of Fixed Income IT Development, this role More ❯

hour access to global markets, allowing clients to trade seamlessly. We use cutting-edge technologies to deliver an exceptional trading experience. We are seeking a Senior C# .NET Web Developer with a strong focus on Kentico CMS to support our next stage of growth. The ideal candidate will have 6-7 years of … experience and demonstrate expertise in C# and Kentico CMS development. As a key member of the web development team, you will collaborate with the Marketing team, UI/UX experts, Product Managers, and other stakeholders, contributing to the development and maintenance of our complex and business-critical CMS platform. Responsibilities: Write and maintain high-quality code in C# … a broad modern technology stack. Actively participate in planning and strategy discussions with stakeholders. Requirements: Minimum 6-7 years of experience in web development with a strong focus on C# and Kentico CMS. Expertise in Kentico CMS, including portal engine, ASPX templates, workflows, macros (k#), BizForms, document types, and search configurations. Proven expertise in writing C# code specifically More ❯