22 of 22 Permanent C# Developer Jobs in the South East

Lead C# Developer/Software Engineer (C# .Net Azure SaaS) Reigate/WFH to £100k Do you have expertise with C# cloud based development combined with technical/team leadership skills? You could be progressing your career, in a senior, hands-on leadership role working on complex and technically challenging systems with continual learning opportunities … a global Fintech. As a Lead C# Developer you'll manage three Agile teams comprising around ten experienced software engineers, responsible for the flagship SaaS insurance platform that handles 4 billion requests per month. You'll play a key role in architecting, designing and developing new features and enhancements whilst ensuring high levels of security, reliability, maintainability … colleagues in the Reigate office twice a week for team meet-ups and stakeholder meetings with the other three days work from home. About you: You have expertise with C# .Net Core backend software development, having worked on large, scalable systems with complexity You have a strong knowledge of Azure, SaaS, PaaS, microservices You have strong technical and team More ❯

C# Developer/Software Engineer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a C# Developer you'll collaborate with a … minimum 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level You have advanced C# .Net programming skills including .Net Core (will also consider Java, Python or C++ background if happy to use C# going forward) You have a strong knowledge of SQL … entrepreneurial with good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a C# Developer/Software Engineer you will earn a competitive package: Salary to £180k Significant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly More ❯

C# Developer/Full Stack Engineer (.Net Core JavaScript) St Albans/WFH to £100k Do you have expertise with C# .Net backend development combined with JavaScript skills? You could be progressing your career in a senior hands-on role at a technology driven trading company that invest in Sports betting markets with a flat structure … where you will get your voice heard and can make a real impact on the bottom line, earning significant bonuses. As a C# Developer you'll join an Agile development team to design and develop new features and enhancements to complex Payments and client systems within a microservices environment (300 services). You'll be working with … a modern tech stack using C# .Net Core, AWS, Kubernetes, Kafka, Redis and TypeScript/Angular; using the right tool for the job, you'll be able to pick up new technologies and make recommendations for improvements. WFH Policy: You'll join colleagues in St. Albans, Hertfordshire (parking available), 10 minute walk from local station, with the flexibility to More ❯

Are you a budding C# developer with a passion for finance and clean code? Join a prestigious asset manager in the heart of the City of London, where you'll help build and maintain internal financial applications that power investment decisions across global markets. You must demonstrate 1 - 3 year's minimum C# development experience. About … the Role As a Junior C# Developer, you’ll work closely with experienced engineers and portfolio managers to develop robust, scalable tools that support trading, risk analysis, and portfolio management. This is a fantastic opportunity to deepen your technical skills while gaining exposure to the inner workings of financial services. Key Responsibilities • Develop and maintain internal applications … using C#, .NET, and SQL Server • Collaborate with business analysts and stakeholders to gather requirements • Write clean, testable code and participate in code reviews • Support and enhance existing systems used by investment teams • Contribute to the evolution of the firm’s technology stack Requirements • Degree in Computer Science, Engineering, or a related field • Solid understanding of C# and More ❯

C#/.Net for FinTech software Hybrid/Remote - Portsmouth Office Award Winning Business Senior C# .NET Developer - WealthTech - Remote or Hybrid The Opportunity We're delighted to be working with our prestigious WealthTech client who are seeking an exceptional Senior C# .NET Developer to work on their proprietary software within their well … of the UK's largest financial services companies and has established themselves as a key player in the FinTech space. This is a fantastic opportunity for an experienced Senior C# .NET Developer with good object-oriented analysis and design skills, familiarity with design patterns and practices to work for an award winning company..The role offers excellent career … demeanor is key, as is the ability to champion the adoption of innovative technologies within the team. Experience Good knowledge of Microsoft development technologies Visual Studio 2022 onwards Strong C#/.NET experience Net/.Net Core Web API development experience API documentation generation tools Experience using IoC containers SQL Server experience Experience using Entity Framework OOAD skills and More ❯

C# Fullstack Developer Our investment bamkng client is looking for a highly skilled C# Fullstack Developer to join their London baseed team in a permananent capacity. Overview: We are seeking a highly skilled C# Fullstack Developer with experience in investment banking or large-scale enterprise environments. This role involves working closely … and maintain fullstack applications using modern technologies. Contribute to DevOps processes and CI/CD pipelines. Work with large data models and multithreaded systems. Essential Skills: Strong proficiency in C# and backend development. Frontend experience with Angular and AG Grid . Solid understanding of SQL Server and database design. Familiarity with Jenkins or other DevOps tools. Ability to build More ❯

Senior C# .NET Developer Mayfair, London - Hybrid (1 - 2 days per week in the office) £68,000 - £72,000 per annum The Role Our client is hiring a backend C# .NET Developer to join their engineering team in a hybrid role (1 - 2 days per week in the office). You’ll help build … that support searching , order processing , and background processes with a strong focus on both application logic and data access . This role is ideal for someone confident in both C#/.NET development and SQL , and who enjoys working on clean, maintainable code and performance-optimised database logic. What You’ll Be Working On: Designing and building backend services … Telemetry and Grafana for logs, metrics, tracing, and alerting across backend services. Contributing to technical design discussions, code reviews, and deployments. What They’re Looking For: Strong experience in C#/.NET backend development. Solid understanding of data modelling, indexing, and performance tuning. Skilled in writing and optimising complex SQL queries and stored procedures. Experience building and maintaining APIs More ❯

Senior C# .NET Developer - WealthTech - Remote or Hybrid The Opportunity We're delighted to be working with our prestigious WealthTech client who are seeking an exceptional Senior C# .NET Developer to work on their proprietary software within their well established team. Our client delivers cutting-edge software solutions for some of the UK's … largest financial services companies and has established themselves as a key player in the FinTech space. This is a fantastic opportunity for an experienced Senior C# .NET Developer with good object-oriented analysis and design skills, familiarity with design patterns and practices to work for an award winning company. . The role offers excellent career progression within … demeanor is key, as is the ability to champion the adoption of innovative technologies within the team. Experience Good knowledge of Microsoft development technologies Visual Studio 2022 onwards Strong C#/.NET experience Net/.Net Core Web API development experience API documentation generation tools Experience using IoC containers SQL Server experience Experience using Entity Framework OOAD skills and More ❯

Junior bright C# .NET Software developer Bank This is a new and exclusive opportunity for a bright junior C# .NET Software developer to join a thriving Fixed Income team in an Investment Bank Role details Title: Software Developer/application developer Technical stack: C# .Net Banking knowledge- Front Office … Banking Permanent role, salary £40-70,000 Location: London City with home working hybrid 2/3 days flexible Requirements: strength in C#.NET, Understanding of Fixed Income As the C# .NET Software developer, you will be developing in the Front Office Fixed Income Banking team and liaise with Fixed Income business to make sure the Technology stack … requirements, growth demand and regulatory obligations. The Front office (Fixed Income) software development team requires an agile and versatile specialist and team player with extensive expertise in .Net/C# software. This role is a key delivery team member for the Front Office/Fixed Income Business in EMEA. Working with the Product Owner and the development team, it More ❯

Join a fast-moving telecoms provider in Berkshire as a Senior C# Developer, where you'll lead the development of internal applications that drive operational efficiency and customer service excellence. This is a hands-on role for a seasoned engineer who thrives in a collaborative, delivery-focused environment. About the Role You’ll take ownership of key … internal systems built on C#, ASP.NET MVC, and Blazor, supporting everything from provisioning workflows to billing automation. Working alongside product owners and infrastructure teams, you’ll help shape the technical direction and mentor junior developers. Key Responsibilities • Architect, develop, and maintain internal applications using C#, ASP.NET MVC, and Blazor • Collaborate with stakeholders to translate business needs into scalable … reviews and promote best practices across the development team • Optimise performance and security of internal systems • Contribute to DevOps workflows and CI/CD pipelines Requirements • Strong experience with C#, .NET Core, and ASP.NET MVC • Understanding of Blazor (Server or WebAssembly) • Proficient in SQL Server and Entity Framework • Experience with RESTful APIs and modern front-end development • Comfortable working More ❯

Are you an experienced .Net (C#) Developer, with "full stack" capability around Angular & Asp.Net , looking to take on a Senior Software Engineering role in a growing SaaS product company ? This is a great opportunity to take on a Senior Developer role with a view to progressing into a Lead as the team continues to grow … d like to join a growing, recently invested in, actually bringing offshore, back onshore, UK Software company – we'd like to speak with you! Job title: Senior Software Developer aka Senior .Net Developer, Senior Full Stack Developer Location: Banbury, Oxfordshire. Hybrid working: 2 days per week in the office/from home office. Flexible … of 2, developing a new version of one of our flagship Software products. Our tech stack, below. But, in the main, if you have solid experience in .Net 8+ (C#) & Angular at a senior level, we'd like to hear from you. - C#/ASP.NET (Core & Framework) and modern JavaScript/TypeScript frameworks, particularly Angular. - MySQL - GitHub actions More ❯

Full-Stack Developer (C#/React) London | Hybrid (3 days per week) | £80,000 to £90,000 base + bonus Ncounter are supporting a high-performing technology team as they expand their web engineering capability and continue to modernise the platforms that power real-time digital marketplaces. We’re looking for experienced Full-Stack Developers who enjoy … driven applications, with a focus on reliability, modularity, and scalability across both front-end and back-end services. In the role you will: • Build and enhance web applications using C# (.NET 8) and React with TypeScript • Design reusable components and frameworks to accelerate product delivery • Collaborate closely with other engineers to define solutions and solve complex technical challenges • Contribute … mentoring within the team • Take ownership of quality, testing, and continuous delivery improvements We’re looking for: • Strong hands-on experience across modern web technologies and frameworks • Proficiency in C# or an equivalent object-oriented language, plus React or similar JavaScript frameworks • A genuine interest in clean code, developer experience, and team-wide collaboration • Someone curious, pragmatic More ❯

Length of Contract: 6 Months Pay Rate: £500-£700 PWD Umbrella Hybrid Model: 2-3 days in the office Overview We're seeking a Reporting Analyst Developer (C#) to join a leading financial institution's IT team, working within the Trade and Transaction Reporting (TTR) area. This is an exciting opportunity for an experienced developer … paced environment. Key Responsibilities: Develop, enhance, and maintain regulatory reporting systems to support business and compliance needs. Design and deliver high-quality, efficient, and scalable software using .NET/C# and SQL . Collaborate closely with the Regulatory Reporting business teams to ensure the technology stack meets current and future requirements. Participate in Agile ceremonies (Scrums, Sprints, Releases) and … risk, and regulatory initiatives across the EMEA region. Promote a collaborative, inclusive, and high-performing team culture. Key Skills & Experience: Strong hands-on development experience in .NET Core and C# . Advanced knowledge of SQL/T-SQL and data modelling. Experience working within the financial services or regulatory reporting domain preferred. Strong analytical, problem-solving, and communication skills. More ❯

Software Developer/Full Stack Engineer (.Net Core JavaScript React) Leatherhead to £70k Do you enjoy working with a range of tech across the full stack? You could be joining one of Britain's largest and longest standing Microsoft partners and technology consultancies, working on a range of projects and progressing your career. As a Software Developer … designing and developing a range of applications with a focus on backend development (70/30), for eCommerce clients. You'll be using a range of modern technologies including C# .Net Core, JavaScript/TypeScript and React within a DevOps, Azure, SaaS environment. There currently breaking up monolith applications into microservices. You'll be working collaboratively, problem solving and … just off M25 or about 10 minute walk from the station) you can enjoy a range of perks such as onsite gym and playroom. About you: You have strong C# .Net Core backend development skills You also have some experience with JavaScript/TypeScript, React, HTML and CSS for front end work You have experience with Kubernetes and/ More ❯

Software Developer, C# .NET React JavaScript TypeScript. SaaS Cloud AI Unified Comms x 3 We’re hiring on behalf of a forward-thinking organisation delivering cutting-edge software across global projects. They’re seeking a driven Software Developer to join their agile, high-performance team and help shape the future of impactful digital solutions. What … You’ll Be Doing as a Software Developer Software Development Write clean, scalable, maintainable code using C# and .NET 5/6 Build modern frontend solutions using JavaScript , TypeScript , and React Contribute to architectural decisions and design secure software components Collaborate closely in Agile/Scrum teams to deliver reliable, user-centric software Carry out rigorous unit … A 2:1 or above in a STEM or Computer Science degree (or equivalent) Strong academic track record. 3+ years’ experience in professional software development Deep expertise in C# , SQL , and Microsoft SQL Server Solid understanding of Git and experience in Agile environments Bonus: Familiarity with OWASP ASVS , secure development standards, and modern UI frameworks like React Why More ❯

Endeavour Recruitment has a brilliant opportunity for an experienced C#/ASP.Net Software Developer based in Southampton. All levels of experience will be considered. Our client offers flexible working and a salary up to £45K plus benefits. Working in an Agile environment you will be translating storyboards and use cases. Proficiency in designing and maintaining reliable and … reusable code is essential as well as maintaining quality and responsive. Responsibilities will also include bug fixing, updating documentation and reviewing functionality. Technical Skillset Required C# ASP.Net MVC OOD SQL Server GIT or other version control tools Advantageous Skillset WinForms WPF including MVVM SOAP WCF REST JSON Web API HTML5 Additional Knowledge Retail EPOS Back Office If you are More ❯

Job Title: Quantitative Developer Client: Leading FinTech Firm Salary: Up to £160k Base + Outstanding Bonus Location: London (Hybrid Working Model) Key Points: Innovative technology, front office exposure, technically … demanding role An exceptional opportunity has opened up at one of the most elite FinTech firms in the industry! My client is searching for highly skilled Quantitative Developers and C# Developers to join their team and contribute to the design and development of complex, high-performance applications that directly support global trading activity. In this role, you’ll be … agile, offering plenty of room to make a real impact. What They’re Looking For: At least 5 years of professional software development experience within the finance sector Strong C# programming skills Solid understanding of financial products or asset classes Degree(s) in Computer Science or a similar technical discipline Excellent communication abilities, both written and verbal A strong More ❯

Working for a major energy trader (energy/renewables). We are recruiting Lead Developer/Tech Lead with a background in C#/.Net (and ideally Angular). The Role As a member of a skilled large global team (London, NYC, Mumbai) of software engineers, you will play a role in developing the core trading platform. … The customers are varied; traders, analysts, researchers and data scientists. Essential Skills: 10+ years of experience working with C#/.NET (8) technologies 5+ years in a leadership role, managing 5+ software engineers (code reviews, architecture) Experience with RDBMS (Oracle, SQL Server, Sybase) Experience working in an agile scrum development model 5+ Years experience of building ETRM solutions Self More ❯

Working for a major energy trader (energy/renewables). We are recruiting Lead Developer/Tech Lead with a background in C#/.Net (and ideally Angular). The Role As a member of a skilled large global team (London, NYC, Mumbai) of software engineers, you will play a role in developing the core trading platform. … The customers are varied; traders, analysts, researchers and data scientists. Essential Skills: 10+ years of experience working with C#/.NET (8) technologies 5+ years in a leadership role, managing 5+ software engineers (code reviews, architecture) Experience with RDBMS (Oracle, SQL Server, Sybase) Experience working in an agile scrum development model 5+ Years experience of building ETRM solutions Self More ❯

Working for a major energy trader (energy/renewables). We are recruiting Lead Developer/Tech Lead with a background in C#/.Net (and ideally Angular). The Role As a member of a skilled large global team (London, NYC, Mumbai) of software engineers, you will play a role in developing the core trading platform. … The customers are varied; traders, analysts, researchers and data scientists. Essential Skills: 10+ years of experience working with C#/.NET (8) technologies 5+ years in a leadership role, managing 5+ software engineers (code reviews, architecture) Experience with RDBMS (Oracle, SQL Server, Sybase) Experience working in an agile scrum development model 5+ Years experience of building ETRM solutions Self More ❯

Software Engineer – onsite Guildford up to £90k My Client provide advanced modelling and optimisation software for the global energy sector. They are seeking multiple Software Developers to join the team out of their Guildford office to help develop tools that More ❯

C#.NET, .NET Core, Entity, API's, SQL Server, GIT, Agile, Windows Server, EDI New Permanent Developer role. Office-based 3-4 days, candidates must live within an easy commute of the office location in Croydon/Purley Our client is seeking to expand its Software Development/IT team in response to continued business growth. A good understanding More ❯