1 to 25 of 30 Permanent Senior C# Software Engineer Jobs in London

Senior) Software Engineer C# & .NET d/f/m Join to apply for the (Senior) Software Engineer C# & .NET d/f/m role at RWE (Senior) Software Engineer C# & .NET d/f/m 1 week ago Be among the first 25 applicants Join to apply for the (Senior) Software Engineer C# & .NET d/f/m role at RWE RWE Supply & Trading GmbH To start … well as support functions and will become an ever increasing asset across the group in the future. You will work apply your expertise in C# and .Net to build robust data services within the Mix system and help us future proof our architecture from a security and technological perspective More ❯

Senior Software Engineer| C# | ASP .NET MVC | Fintech | FX Payments | London | Hybrid | Up to £95,000 + Package Senior Software Engineer| C# | ASP .NET MVC | Fintech | FX Payments | London | Hybrid | Up to £95,000 + Package … days ago Be among the first 25 applicants Senior Software Engineer | FinTech | C# .NET MVC | SQL | Front End | London, Hybrid | up to £95,000 + Benefits An experienced Senior Software Engineer is needed to join our FinTech … not just another SAAS provider - they are the driving force behind some of the most successful financial firms in the world. As the Senior Software Engineer, you will be part of a cross-functional team of Developers, working with Designers, Analysts, and Software More ❯

Senior Software Engineer C# .Net Core AWS Senior Software Engineer C# .Net Core AWS 1 week ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. This range … Client Server Senior Recruitment Consultant at Client Server Senior Software Engineer to £140k Are you a C# technologist with strong backend development experience looking for an opportunity to progress your career in a senior, hands-on role? You could … social events and much more. As a Senior Software Engineer you'll join a small, Agile team using C# .Net Core within a TDD environment deploying to AWS. You'll design and develop new features and enhancements across two security product areas, working More ❯

Senior Software Engineer C# .Net - relocate to Newcastle! This range is provided by Client Server. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the job poster from Client … Server Senior Software Engineer/Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better … , you will collaborate with a small, talented team to deliver the core trading platform within a Microsoft environment, using the latest versions of C# .Net to produce high-quality code. The company has ambitious growth plans, and this is a great opportunity to be involved from the ground More ❯

Senior Software Engineer/Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better quality … you will collaborate with a small, talented team to deliver the core trading platform within a Microsoft environment using the latest versions of C# .Net to produce high quality code. The company has ambitious growth plans, this is a great opportunity to be involved from the ground up … s at A-level You're a technologist who enjoys collaborating and problem solving, working on complex, distributed systems You have expertise with modern C# .Net Core, Python skills would also be of benefit You have a strong knowledge of modern software engineering best practices and have More ❯

Senior Software Engineer C# .Net - sports betting Senior Software Engineer C# .Net - sports betting Recruitment Gamechangers provided pay range This range is provided by Recruitment Gamechangers. Your actual pay will be based on your skills and … recruiter to learn more. Base pay range Direct message the job poster from Recruitment Gamechangers Recruitment Director (iGaming – UK & Europe) at Recruitment Gamechangers Senior Software Engineer - sports analytics/betting Salary: £75k-90k (plus very attractive bonus on top) Location: London or Leeds (Very … Solid technical education with professional experience in the area of software development. Experience with .NET and .NET Core and good knowledge in C# and object oriented software development is preferred. However, we will also look at candidates with experience in similar technologies. Experience in microservices More ❯

Job Title: Senior Software Engineer C# .Net - relocate to Newcastle!, London Client: Client Server Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 2 Posted: 05.05.2025 Expiry Date: 19.06.2025 Job Description: Senior Software Engineer/Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better quality of life? This role offers great restaurants … Engineer, you will collaborate with a small, talented team to develop the core trading platform within a Microsoft environment using the latest C# .Net versions to produce high-quality code. This is a ground-up opportunity aligned with the company's ambitious growth plans. Location: Work onsite More ❯

Job Description Senior Software Engineer | FinTech | C# .NET MVC | SQL | Front End | London, Hybrid | up to £95,000 + Benefits An experienced Senior Software Engineer is needed to join our FinTech client, which is innovating within the … and contribute innovative ideas. This role offers the chance to work on a new platform from scratch, addressing challenging problems with your expertise in C#, ASP.NET, SQL , and front-end tools like React/Angular, HTML, CSS, JavaScript . The Senior Software Engineer … position offers a salary of up to £95,000 plus benefits. The company is based in London with a hybrid working model. Tech stack: C# - SQL - ASP.NET MVC - .NET - React/Angular - Azure - JavaScript Requirements: At least 4-5 years of full-stack software engineering experience, with More ❯

Social network you want to login/join with: Senior Software Engineer (C#/.NET), London col-narrow-left Client: Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: 29a3e4e091e5 Job Views: 5 Posted: 02.06.2025 … the Senior level. WHAT SKILLS DO YOU HAVE? You will have expert-level knowledge of at least one object-oriented programming language (C#, Java, JS, Kotlin, Python, PHP, Golang, C++) You will have a strong understanding of the principles of good software design. Familiarity with … experience in messaging and asynchronous communication technologies IT IS ADVANTAGEOUS FOR YOU TO HAVE KNOWLEDGE OF THE FOLLOWING: You will have expert knowledge of C# Operation of Kubernetes Clusters Building cloud native applications Mathematical Aptitude, particularly statistics Front-end web technologies Domain Driven Design WHAT WE EXPECT FROM OUR More ❯

Senior Software Engineer | C# | ASP .NET MVC | Fintech | FX Payments | London | Hybrid | Up to £95,000 + Package VirtueTech Recruitment Group is seeking an experienced Senior Software Engineer to join a leading FinTech client innovating within the … a global presence, they are a trusted partner for auditing, tax, and financial services firms, driving excellence and innovation. Role Overview As a Senior Software Engineer , you will collaborate with cross-functional teams including Developers, Designers, Analysts, and Testers to develop, maintain, and enhance More ❯

like to join us, and you can carve out your own work schedule as well! Senior Software Engineer - (C#/Backend) We are looking for a talented and driven Senior Software Engineer - Backend to join our team. … functionality into a standalone service for modularity. Improve API resiliency to ensure high availability. What will you add? Strong experience in backend development using C# and .NET . Proficiency with background processing/queueing systems such as RabbitMQ . Hands-on experience with databases like Clickhouse/InfluxDB and More ❯

Senior Software Engineer - Backend (C#), London Client: Trayport Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 4 Posted: 16.05.2025 Expiry Date: 30.06.2025 Job Description: The Role We’re looking for Software Engineers to join our … distributed tracing in critical code paths Implementing new automated trading features Benchmarking to reduce latency Collaborating on design and RFCs with colleagues Technology Stack C# with .NET 8 SQL Server, Kafka, RabbitMQ Azure DevOps, Azure Pipelines, migrating from TeamCity and Octopus Deploy Splunk, Grafana, Prometheus for observability You As … code Participate in all development stages: planning, implementation, and delivery Pair with colleagues to share knowledge Engage in technical discussions Skills & Experience Proficiency in C# or similar programming languages Ability to write efficient, concurrent code Understanding of distributed systems Experience with Git, TeamCity, and Octopus (valued but not required More ❯

past several years and is backed by Insight Venture Partners www.insightpartners.com ), a leading global private equity firm investing in high-growth technology and software companies that drive transformative change in the industries they serve. Founded in 2000, Kaseya currently serves customers in over 20 countries across a wide … team that values innovation and strives to make a meaningful difference in the world of technology, we want to hear from you. The Role: C# .NET Software Engineer Join the DRMM Team , a group dedicated to enhancing and maintaining the software that powers … users to connect and control desktops from anywhere in the world, delivering superior performance and reliability in real-time. About You (Essential): Experience with C# and the .NET Ecosystem: Minimum of 5 years, including strong proficiency with the latest versions of .NET. Cloud Computing Expertise: Hands-on experience with More ❯

want to login/join with: Senior Software Engineer - Leading Global FinTech - React/TypeScript/Node/C# - Hybrid in London (2 days a week) - £100k, London Client: Opus Recruitment Solutions Location: London, United Kingdom Job Category: Other EU work permit required … Posted: 25.05.2025 Expiry Date: 09.07.2025 Job Description: I am supporting a leading global FinTech based in London with their search for a Senior Software Engineer . You'll join one of their core engineering squads and work on a key platform used by their … passion for software engineering is essential. Required technical skills include: React.js - 6+ years (solid understanding & up-to-date with latest tools) TypeScript C# .NET Node.js Additional requirements: Stakeholder Management Fintech/Finance experience is a plus The company has an excellent office in Central London, with a More ❯

The Role We are looking for a senior software developer to join our back-end development team working on our core trade execution platform. You will be involved in the design and development of new features for our clients, maintenance and support of existing functionality, and … importance as correct behaviour and stability are key to our client’s business. Responsibilities Design efficient and scalable implementations of new features in C C# in a highly concurrent environment Ensuring high quality and maintainable, unit tested code Expanding and maintaining our core execution platform and our continuous integration … and automation frameworks in C C# Developing new tooling in C++/C#/Powershell Assistance with client reported issues. Skills and Experience Essential: C++ C# Multithreaded code Desirable: C++ 17 and later Microsoft SQL Server Powershell More ❯

Job Description I am supporting a leading global FinTech based in London with their search for a Senior Software Engineer . You'll join one of their core engineering squads and work on a key platform used by their global customer base. This role … project, providing an opportunity to make significant decisions and influence the project's direction and future developments. The ideal candidate is a passionate Engineer who can drive the product forward and effectively communicate with various stakeholders within the company. You will need to be a GREAT COMMUNICATOR and … development and engineering is essential. Required technical skills include: React.js - 6+ years (solid understanding of fundamentals & up-to-date with latest tools) TypeScript C# .Net Node.js Azure Additional qualities needed: Good Communication skills Stakeholder Management Fintech/Finance experience is a plus The company has an excellent office More ❯

The Role Trayport is actively looking for a Senior Software Developer to join our team for the design and development of our flagship data analytics platform where you will contribute to System Architecture, aid colleagues to help coordinate our projects and review code too. Our platform … market data feeds that together add hundreds of millions of data points to our dataset every day. We encourage ownership across the entire software lifecycle, and will value your input on each stage. We take an iterative approach to solve problems and continually improve our product. If you … hear from you. Responsibilities Contribute to System Architecture, Aid colleagues to help coordinate our projects Peer review code The Person Strong working knowledge of C# or Kotlin Experience writing efficient, concurrent .NET code Experience working on distributed systems Strong knowledge of Kubernetes and Kafka Experience with Git, and Deployment More ❯

The Role Trayport is actively looking for a Senior Software Developer to join our team for the design and development of our flagship data analytics platform where you will contribute to System Architecture, aid colleagues to help coordinate our projects and review code too. Our platform … market data feeds that together add hundreds of millions of data points to our dataset every day. We encourage ownership across the entire software lifecycle, and will value your input on each stage. We take an iterative approach to solve problems and continually improve our product. If you … hear from you. Responsibilities Contribute to System Architecture, Aid colleagues to help coordinate our projects Peer review code The Person Strong working knowledge of C# or Kotlin Experience writing efficient, concurrent .NET code Experience working on distributed systems Strong knowledge of Kubernetes and Kafka Experience with Git, and Deployment More ❯

The Role Trayport is actively looking for a Senior Software Developer to join our team for the design and development of our flagship data analytics platform where you will contribute to System Architecture, aid colleagues to help coordinate our projects and review code too. Our platform … market data feeds that together add hundreds of millions of data points to our dataset every day. We encourage ownership across the entire software lifecycle, and will value your input on each stage. We take an iterative approach to solve problems and continually improve our product. If you … hear from you. Responsibilities Contribute to System Architecture, Aid colleagues to help coordinate our projects Peer review code The Person Strong working knowledge of C# or Kotlin Experience writing efficient, concurrent .NET code Experience working on distributed systems Strong knowledge of Kubernetes and Kafka Experience with Git, and Deployment More ❯

The Role Trayport is actively looking for a Senior Software Developer to join our team for the design and development of our flagship data analytics platform where you will contribute to System Architecture, aid colleagues to help coordinate our projects and review code too. Our platform … market data feeds that together add hundreds of millions of data points to our dataset every day. We encourage ownership across the entire software lifecycle, and will value your input on each stage. We take an iterative approach to solve problems and continually improve our product. If you … hear from you. Responsibilities Contribute to System Architecture, Aid colleagues to help coordinate our projects Peer review code The Person Strong working knowledge of C# or Kotlin Experience writing efficient, concurrent .NET code Experience working on distributed systems Strong knowledge of Kubernetes and Kafka Experience with Git, and Deployment 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# … 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 More ❯

Job Description 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 to meet candidates ideally with some understanding of Trading Floor projects to include Fixed Income, Risk Management, Swap Options, and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems, so an understanding of … 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 More ❯

Job Description The Role We’re looking for Software Engineers to join our Joule Direct team, to help us build and improve our high-throughput, low-latency energy trading platform. You’ll be working with some amazing technologists to solve complex problems. For us, teamwork is everything. We … code to reduce latency Do some design/planning with a colleague and raise an RFC Our Tech Stack Our services are written with C# on .NET 8 We use a fair bit of SQL Server, Kafka and RabbitMQ Azure DevOps. We are big fans of Azure Pipelines! Some … including planning, implementation and delivery Pairing with other engineers to share and expand your knowledge Contributing to technical discussions Skills & Experience Strong knowledge of C# or any popular programming Excellent communication skills Can write efficient, concurrent code Knowledge of how distributed systems work Experience with Git, TeamCity and Octopus More ❯

Category: Other EU work permit required: Yes Job Views: 1 Posted: 25.05.2025 Expiry Date: 09.07.2025 Job Description: Front End (Blazor) Engineers (Mid and Senior roles … open) - Southwest HQ – Remote First Working We are looking for Front End (Blazor) Engineers - Mid and Senior level Software Engineers (C#/Azure/API) to join our team at Southwest HQ with a remote-first approach. This is a 12-month FTC role with … and quality while maximizing team throughput through a strong CI/CD mindset. Your effective communication skills will enable you to work alongside senior team members, taking lead roles in architectural and technical design discussions, and presenting during team refinement sessions. Technical Stack: Front End: Blazor, Microservices, RESTful More ❯

I am supporting a leading global FinTech based in London with their search for a Senior Software Engineer. You'll join one of their core engineering squads and work on one of their core platforms used by their global customer base. You'll be brought on … the project + all future stuff that comes your way (and there will be a lot!). They are looking for a passionate Engineer who can really drive the product and communicate/liaise with various stakeholders in the company. You will need to be a GREAT COMMUNICATOR … You will need to have an in depth understanding of: React.js - 6+ years (Solid understanding of fundamentals & up to date with latest tools) TypeScript C# .Net Node.js Azure What is also needed: Good Communication skills Stakeholder Management Fintech/Finance experience is a plus They have an amazing office More ❯