Senior C# Software Engineer Jobs in the UK

26 to 48 of 48 Senior C# Software Engineer Jobs in the UK

Senior Software Engineer C# .Net - FinTech

Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Client Server Ltd
Senior Software Engineer/Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking for an opportunity to progress your career, working on complex and interesting systems in an impactful role You could be joining a FinTech start-up as a founding member … Software Engineer you will collaborate with a small, talented team to deliver the core 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 and progress your career. Location … Group university, backed by A'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 experience across the full software More ❯
Employment Type: Full-Time
Salary: £100,000 - £130,000 per annum
Posted:

Senior Software Engineer C# .Net - sports betting

London, England, United Kingdom
Hybrid / WFH Options
Recruitment Gamechangers
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 experience — talk with your 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 relaxed regarding hybrid or remote working, if preferred) We are looking to fill 3 roles at … of releases. Experience and knowledge: 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 and web APIs, including message More ❯
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C# Software Engineer (Senior/Principal)

Basildon, Essex, United Kingdom
Hybrid / WFH Options
Leonardo UK Ltd
Job Description: C# Software Engineer (Senior/Principal) The Opportunity Are you a Software Engineer with C# experience looking for your next challenge? Here at Leonardo, we are on the hunt for talented software engineers to support our Integrated Sensors & Protection line of business, working on … a range of defence projects. Direct industry experience is not required; we are happy to explore all backgrounds and help develop our software engineers. What you will do: We want to develop a new generation of features and capabilities using innovative software solutions. You will be a key part of a community … of world-class software engineers who will continuously improve, collaborate, and innovate to create market-leading products within the defence industry. What we are looking for: Essential C# software development Machine-to-machine networking, working to third-party interface definitions Test frameworks and test development (not test-driven development) Microservices architecture/containerisation (development of More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

C# Software Engineer (Senior/Principal)

Basildon, Essex, United Kingdom
Hybrid / WFH Options
leonardo company
C# Software Engineer (Senior/Principal) Apply Locations: GB - Basildon Time Type: Full time Posted on: Posted Yesterday Job Requisition ID: R Job Description: The Opportunity Are you a Software Engineer with C# experience looking for your next challenge? Here at Leonardo, we are on the hunt for … talented software engineers to support our Integrated Sensors & Protection line of business, working on a range of defence projects. Direct industry experience is not required; we are happy to explore all backgrounds and help develop all our software engineers. What you will do: You will be a key part in a community of world-class … software engineers who will continuously improve, collaborate and innovate with other engineers to create market-leading products within the defence industry. What we are looking for: Essential: C# software development Machine-to-machine networking, working to third-party interface definitions Test frameworks and test development (not test-driven development) Microservices architecture/containerisation CUDA integration More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

C# Software Engineer (Senior/Principal)

Basildon, England, United Kingdom
Hybrid / WFH Options
Leonardo
Job Description C# Software Engineer (Senior/Principal) The Opportunity Are you a Software Engineer with C# experience looking for your next challenge? This is an opportunity to join the team developing Leonardo’s operationally-proven, innovative, scalable, layered Counter-UAS (CUAS) capability. Un-crewed Air Systems (UAS … technology exploits Leonardo’s best-of-breed approach, delivering extensive performance in sensing and warning capabilities, utilizing electro optical sensors and advanced radio frequency effectors. We employ innovative software development techniques and seek those interested in developing next-generation solutions. Link: https://uk.leonardo.com/en/electronics/counter-uas What You Will Do Develop new … solutions. Collaborate with a community of world-class software engineers to improve, innovate, and create market-leading products within the defense industry. Essential Skills and Experience C# software development Machine-to-machine networking and third-party interface integration Test frameworks and development (not test-driven development) Microservices architecture and containerization CUDA integration for AI More ❯
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Senior Software Engineer - C# / FinTech

London, South East, England, United Kingdom
Hybrid / WFH Options
Connexa
of exciting projects, including playing a key role in the launch of a brand-new mobile app scheduled for September 2025. The successful candidate will bring deep expertise in C# development, cloud infrastructure, and AI technologies, contributing to the business' ongoing digital evolution. Main Purpose of the Role:Lead backend development and play a key role in the mobile … multiple projects simultaneously within a fast-paced FinTech environment. What They Are Looking For:7+ years of senior-level software development experience.Deep commercial experience with C# development.Strong knowledge of AWS cloud services and infrastructure.Proven experience with CI/CD pipeline development and deployment automation.Experience contributing to mobile app development projects.Keen interest and practical experience in … directly contribute to the delivery of a major FinTech mobile app launch. Apply today to be considered for this fantastic Senior Software Engineer (C#) opportunity. Interviews are taking place shortly! Keywords: Senior Software Engineer, C#, AWS, AI, Artificial Intelligence, CI/CD, Cloud Infrastructure, Mobile App More ❯
Employment Type: Full-Time
Salary: £100,000 - £110,000 per annum
Posted:

Senior Software Engineer - Leading Global FinTech - React/ TypeScript/ Node/ C# - Hybrid in Londo...

London, England, United Kingdom
Hybrid / WFH Options
ZipRecruiter
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 involves working on a greenfield 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 collaborate with a team of Engineers. A … strong passion for software 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 in Central London, with a More ❯
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Senior C# Software Engineer

Cambridge, Cambridgeshire, United Kingdom
Hybrid / WFH Options
Ecm Selection
Based in offices in central Cambridge (with hybrid work options available - 3 days a week in the office), this company develops software used for scientific engineering applications. Their software products … have been best-in-class for several years, and they progressively look forward to maintaining that position through new features and accessibility. Their software is based on C# with the use of TypeScript/JavaScript for web-based applications. For this role, they are looking to recruit an experienced C# software engineer … engineering practices and ensure high level of software maintainability. Requirements: 1st/2.1 in Computer Science or similar, and significant professional software experience using C# and .NET framework for Enterprise software products. Good communication skills - collaboration within the team is important. Demonstrable experience working on complex and large code bases. Additional experience More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

C# Software Engineer (Senior/Principal)

Basildon, England, United Kingdom
Leonardo UK Ltd
Are you a Software Engineer with C# experience looking for your next challenge? Here at Leonardo, we are on the hunt for talented software engineers to support our Integrated Sensors & Protection line of business, working on a range of defence projects. Direct industry experience is not required; we are happy to explore all … backgrounds and help develop our software engineers. What you will do: We want to develop a new generation of features and capabilities using innovative software solutions. You will be a key part of a community of world-class software engineers who will continuously improve, collaborate, and innovate to create market-leading products within the … to have Experience with military domains, e.g., automation (sentry mode) Knowledge of industrial protocols (e.g., Synergia) Experience with radar systems Experience with Luciad Experience with CUAS/Tracking software, including data fusion, thermal/IR imaging, AI/ML exploitation What you will get: Flexible working hours and part-time options to support work-life balance Flexible benefits More ❯
Posted:

C# Senior Software Engineer (Security Clearance)

Reading, England, United Kingdom
Hybrid / WFH Options
TieTalent
transitioning to a new platform built on Windows Server 2016 and Microsoft SQL Server 2017, supporting bespoke COTS medical software and infrastructure. As a Senior C# Developer, you will play a critical role in modernising and sustaining our Deployed System, originally deployed in 2011 and now undergoing a significant tech uplift. You will work within … a DevOps environment to uplift existing software, develop new modules, and support tightly integrated COTS and infrastructure components including Microsoft Office, Adobe Reader, and peripheral hardware like printers and scanners. You will contribute to system improvement while ensuring all changes align with Quality of Service and SLA expectations. Your input into process optimisation, testing, and system configuration will … configuration, and deployment of operating system images. • Collaborate with infrastructure and support teams to address system-wide enhancements. Required qualifications to be successful in this role • Strong background in C# development with Visual Studio 2019. • Hands-on experience with Windows Server 2016 environments. • Solid experience working with Microsoft SQL Server 2017. • Familiarity with COTS integration, especially Microsoft Office More ❯
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Snr Software Engineer (C# ASP.NET Angular) - London hybrid

London, England, United Kingdom
Hybrid / WFH Options
ZipRecruiter
Job Description Full Stack C#/Angular Developer - London (3 days a week) - £90-95K + Bonus & Benefits Senior Full Stack Developer with C#, .NET, and Angular is required to join a small, talented, and dynamic team in London (3 days a week onsite) playing a key role in a major tech modernisation project. This … well-established hedge fund, with a 30-year track record of success, is looking for an experienced Full Stack Engineer to help migrate legacy C# applications to Angular and contribute to the development of cutting-edge financial systems. You'll work in a collaborative environment, leveraging your skills in . NET, C#, Angular, SQL Server, and … of the team have been there for 5+ years! Apply now to join this forward-thinking development team and take your Full Stack Development skills to the next level! C#, Angular, Full Stack, London, ASP.NET, SQL Server, RabbitMQ. Financial experience not required. Must have the right to work in the UK. #J-18808-Ljbffr More ❯
Posted:

Senior Software Engineer - C# / FinTech

London, England, United Kingdom
Hybrid / WFH Options
Connexa
of exciting projects, including playing a key role in the launch of a brand-new mobile app scheduled for September 2025. The successful candidate will bring deep expertise in C# development, cloud infrastructure, and AI technologies, contributing to the business' ongoing digital evolution. Main Purpose of the Role:Lead backend development and play a key role in the mobile … multiple projects simultaneously within a fast-paced FinTech environment. What They Are Looking For:7+ years of senior-level software development experience.Deep commercial experience with C# development.Strong knowledge of AWS cloud services and infrastructure.Proven experience with CI/CD pipeline development and deployment automation.Experience contributing to mobile app development projects.Keen interest and practical experience in … directly contribute to the delivery of a major FinTech mobile app launch. Apply today to be considered for this fantastic Senior Software Engineer (C#) opportunity. Interviews are taking place shortly! Established in Didsbury, Connexa Technology Ltd is becoming one of the UK's fastest growing IT and Technology recruitment companies. People. Technology. Connected. More ❯
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Senior Software Engineer (Node, TypeScript, C#)

Peterborough, Cambridgeshire, United Kingdom
Hybrid / WFH Options
BGL Group
Job Description - Senior Software Engineer (Node, TypeScript, C#) (006179) Description Our purpose is to make great financial decision making a breeze for everyone, and that purpose drives us every day. It's why we're on a mission to create an automated quoting engine, with the simplest of experiences, wrapped in a brand … simple to switch and save money and that's why good things happen when you meerkat. We'd love you to be part of our journey. As the Senior Software Engineer, you will lead development of first-class technical solutions whilst also actively contributing to and leading a culture of innovation, enthusiasm and passion. … to support the goals and objectives on your team. You will have a focus on end-to-end responsibility for the development, quality, observability, and testing of the software you build. This role will offer you the opportunity to get hands on with a number of different technologies, however, this role will be using Node.js, Typescript, and C#. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer (C#)

Sheffield, Yorkshire, United Kingdom
Hybrid / WFH Options
Goodlord
days from home/office (whatever you prefer!) About the team that drives our platform We're a PropTech scale-up who have created a revolutionary, cloud-based software platform to bring together agents, landlords and tenants online and process all the paperwork electronically. Our small, self-organising squads build the platforms and tools to help us achieve … Tech we use At Goodlord, we pride ourselves on utilising modern technologies to build scalable, efficient, and reliable systems. Our referencing backend is powered by Azure Functions, written in C#, enabling serverless and event-driven architectures. We use Azure Event Grid for seamless event-based messaging and Cosmos DB for data storage. We also use Terraform for infrastructure configuration … Offer to mentor less experienced developers Continuously develop your skillset via tailored professional development objectives and budget What we need from you: Significant experience building web-based applications using C# Demonstrable skills in domain modelling using Object Oriented techniques and principles Proficient in writing automated tests using frameworks such as NUnit, MSTest, or xUnit Strong knowledge of web application More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer (C#)

London, England, United Kingdom
Hybrid / WFH Options
Goodlord
days from home/office (whatever you prefer!) About the team that drives our platform We're a PropTech scale-up who have created a revolutionary, cloud-based software platform to bring together agents, landlords and tenants online and process all the paperwork electronically. Our small, self-organising squads build the platforms and tools to help us achieve … Tech we use At Goodlord, we pride ourselves on utilising modern technologies to build scalable, efficient, and reliable systems. Our referencing backend is powered by Azure Functions, written in C#, enabling serverless and event-driven architectures. We use Azure Event Grid for seamless event-based messaging and Cosmos DB for data storage. We also use Terraform for infrastructure configuration … Offer to mentor less experienced developers Continuously develop your skillset via tailored professional development objectives and budget What we need from you: Significant experience building web-based applications using C# Demonstrable skills in domain modelling using Object Oriented techniques and principles Proficient in writing automated tests using frameworks such as NUnit, MSTest, or xUnit Strong knowledge of web application More ❯
Posted:

Senior Software Engineer C#/C++

City of London, London, United Kingdom
Trayport
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 technological improvements to ensure the system is kept up to … releases. Quality is of paramount 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 ❯
Posted:

Senior Software Engineer C#/C++

London Area, United Kingdom
Trayport
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 technological improvements to ensure the system is kept up to … releases. Quality is of paramount 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 ❯
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Senior Software Engineer - C#

London, England, United Kingdom
JR United Kingdom
Social network you want to login/join with: Senior Software Engineer - C++, west london col-narrow-left Client: Verso Recruitment Group Location: west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 1 Posted: 04.06.2025 Expiry Date: 19.07.2025 col-wide Job Description: Job Title: Senior Software Engineer - C++ Location: Colchester Salary: Up to £65,000 per annum Are you an experienced Senior Software Engineer - C++, looking to push the boundaries of technology. This role, based in the historic town of Colchester, offers an exceptional platform to elevate your career while working on cutting … edge technology. Imagine a position where your expertise in software, C++, Python, GUI and Linux is not just valued but celebrated. This is a chance to work with a dynamic team of engineers and working on projects from conception to completion. You will be instrumental in shaping the future of embedded systems, making a tangible impact in a More ❯
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Senior Software Engineer (C#)

Slough, England, United Kingdom
JR United Kingdom
Social network you want to login/join with: Senior Software Engineer - Trading Data, slough col-narrow-left Client: Trayport Location: slough, 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: 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 ingests hundreds of millions of data points every day and provides our customers with real-time insight … development practices, we would love to hear from you. Responsibilities Contribute to System Architecture, Aid colleagues to help coordinate our projects 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 Pipelines Having worked with at More ❯
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Labview & C# Senior Software Engineer

Blandford Forum, Dorset, South West, United Kingdom
SOUTH WEST RECRUITMENT
We are recruiting for a Senior Software Engineer for a world class test system solutions provider who deliver high quality, high performance and cost effective automated test equipment to the aerospace, defence, rail & transport, telecoms and energy market places for over 30 years. The company have built their reputation by providing their customers with … policy) Location: Blandford Forum, Dorset, Site based. Job Summary We are seeking experienced software engineers with strong LabVIEW and TestStand skills, proficiency in C/C++/C# would be advantageous. Conceptual design and flow-down of work packages and successful software development. Providing technical support & training to less senior software engineers. Responsibilities Developing software for a variety of new test equipment solutions -Developing drivers, software modules and test sequences Involving core functions such as: Instrumentation Data Acquisition Signal conditioning and processing techniques Graphical User Interfaces Design, write and document code that is maintainable, extensible, reliable and efficient. Participate in design reviews including preliminary and More ❯
Employment Type: Permanent
Posted:

Senior C# Software Engineer

Royal Leamington Spa, England, United Kingdom
Hybrid / WFH Options
IC Resources
The right to work in the UK without sponsorship is essential for this vacancy. Senior C# Software Engineer An exciting opportunity for a Senior C# Software Engineer has arisen with a cutting-edge measurement tool company, based in Warwick. This is a great opportunity for a … Senior C# Software Engineer to join the R&D team, focusing on the development of measurement algorithms and sensor fusion algorithms, which are crucial to the success of their current and future products in the market. You will commit to a hybrid working model, required onsite 2-3 days a week. Experience Required … 5+ years developing software with C# Professional experience with vector algebra Understanding of algorithms and data structures Understanding of Quaternions If you are a Senior C# Software Engineer looking for an exciting new challenge in a great company, then please apply today to learn more. Seniority Level Mid-Senior More ❯
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Senior Software Development Engineer (C#)

Saint Neots, England, United Kingdom
Hybrid / WFH Options
Pico Technology Limited
information Full time – 40 hours a week St Neots, Cambridgeshire – office based, hybrid working optional Role purpose We’re seeking an experiencedSenior Software Development Engineer (C#) who is passionate about delivering high-quality software and mentoring a team of talented developers. This role provides the opportunity to lead technical projects, influence architectural decisions … and collaborate across multi-disciplinary teams to bring innovative solutions to life. Working closely with the Software Development Manager, you’ll contribute to technology improvement, feature design, and process enhancements, all while supporting our commitment to agile principles and customer-centric development Key responsibilities: As a Senior Software Development Engineer, you will … blue sky” time for professional development, giving you the chance to deepen your expertise and stay ahead of industry trends. What We’re Looking For Experience: Proven experience in C# software development, ideally in a senior or technical lead role Technical Skills: Strong understanding of software architecture and design patterns; experience with agile More ❯
Posted:

Senior Software Development Engineer (C#)

Cambridge, England, United Kingdom
Hybrid / WFH Options
Pico Technology Limited
information Full time – 40 hours a week St Neots, Cambridgeshire – office based, hybrid working optional Role purpose We’re seeking an experiencedSenior Software Development Engineer (C#) who is passionate about delivering high-quality software and mentoring a team of talented developers. This role provides the opportunity to lead technical projects, influence architectural decisions … and collaborate across multi-disciplinary teams to bring innovative solutions to life. Working closely with the Software Development Manager, you’ll contribute to technology improvement, feature design, and process enhancements, all while supporting our commitment to agile principles and customer-centric development Key responsibilities: As a Senior Software Development Engineer, you will … blue sky” time for professional development, giving you the chance to deepen your expertise and stay ahead of industry trends. What We’re Looking For Experience: Proven experience in C# software development, ideally in a senior or technical lead role Technical Skills: Strong understanding of software architecture and design patterns; experience with agile More ❯
Posted:
Senior C# Software Engineer
10th Percentile
£60,750
25th Percentile
£61,250
Median
£64,500
75th Percentile
£80,000
90th Percentile
£80,950