Find your next tech and IT Job or contract C# in England

FIS Integrity Treasury Systems Support Analyst Our Client is in the process of implementing a Treasury System from FIS called Integrity. You must have at least 2 to 4 years experience of working with and supporting FIS Integrity's Treasury System. The Client may consider experience of FIS Quantum as well. Any software development skills with C# .net, C++ and SQL Server would be very useful for this role. This will be a hybrid role with 3 days in the office in Central London. The salary for this role will be in the range £45K - £65K. Do send your CV to us in Word format along with your salary and availability.

At CGI, you’ll play a pivotal role in building and sustaining secure, high-impact applications that underpin critical services for our clients. As a C# Developer, you’ll contribute to the full application lifecycle, combining hands-on development with 4th line support to ensure resilient, high-performing systems. Working within a collaborative, ownership-driven culture, you’ll help deliver measurable outcomes, strengthen long-term client relationships, and shape solutions that make a real difference in a highly secure environment. CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go. Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This is a full-time onsite position based in our Reading office, five days per week. UK sole nationality is required.

At CGI, we’re redefining what’s possible in the Space, Defence, and Intelligence sector delivering secure, mission-critical systems that protect the UK and drive national capability. As a C++ Software Engineer, you’ll help design and implement next-generation solutions that enable operational excellence and resilience in the most demanding environments. You’ll be part of a trusted team that values innovation, ownership, and collaboration—empowering you to shape the future of defence technology while advancing your own career through continuous learning and professional growth. CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go. Due to the highly secure nature of the work, this role is only open to sole UK Nationals who hold or are eligible to hold High-Level Clearance (HLC). While hybrid or remote working may be possible, regular attendance at the secure site will be required.

Junior Software Developer with C# C++ Java or Delphi Our Client is a boutique software consultancy providing analytical tools and processing software to the retail banking industry. Their tools are used by high street banks and major credit companies to evaluate credit risk of their applicants. They have a large library of Delphi software code incorporating SQL, XML, XSL and data modelling in their analysis application. The Client is embarking on new developments to take their products onto new platforms and into new customer bases. Currently exploring options including RAD Studio, Visual Studio, Delphi, C#, C++, Client/Server, n-tier, Hadoop and SaaS. They require candidate with a strong computing background. You will be coding in Delphi and other languages. Any similar Object Oriented language (e.g. C++) will be a suitable starting point for training. The role will be interesting and varied, becoming involved throughout the project lifecycle. This hands-on role will suit an outgoing individual with good communication skills and a desire to improve and develop already effective technical skills. Must have a sound background knowledge of Object Oriented techniques coupled with experience in Delphi \ C++ \ Java. Any experience of SQL Server, n-tier / client-server, Microsoft Visual Source Safe (VSS), XML / XSL, Mathematical / statistical knowledge would be very useful Salary for this role will be dependent on experience but in the range £22K - £30K. Please send your CV to us in Word format.

Years of relevant experience 3+ years Education Level Bachelor's Degree About the Job Our Client is looking to recruit a C# .net Software Developer with SQL skills. The Client produces information for the Oil and Gas industry and you will be involved in helping their clients and team visualise and interact with the company’s research data. Required Skills · .net 4, c# , asp.net · MS SQL (Working with and developing relational databases in SQL) · Stored procedures, Functions, SSIS · HTML,CSS · Web Services · Java script · Jquery, AJAX, XML Desirable Skills · GIS · Business Intelligent Tools eg. Logi, Tablae This is a full time position where our Client is seeking someone with about 3 to 5 years’ experience with C# Dot Net with MS SQL Server software development. You will be involved in developing a reporting tool for clients to be able to login to and turn a query into a visual and interactive representation of the results. C# Dot Net development. Support modelling and forecasting processes work with the consulting and management teams to understand what they want to achieve and advise them regarding a stepped approach to achieving this goal. Support the development of new products to improve internal efficiency and to better service client needs Introduce and implement new IT software and architecture. Key skills required: · C# Dot Net with SQL · R (Preference) This is contract for a duration of 6 months. Please send your CV in MS Word format, along with your availability and salary expectations.

Database Engineer with SQL and C# Our Client is a City based bank – looking to recruit a Database Engineer with at least 3 to 5 years expertise of developing and supporting SQL and C#. Software Development: Analysis of issues pertaining to problems or errors raised by in-house systems, i.e. CORE, SharePoint interface, Equation end of day cycle. Understanding business requirements in order to develop and deliver appropriate solutions based on system definition documents. Proficiency in advanced 4GL programming languages and able to apply to the fully development life-cycle. Database Support Supporting budgeting and financial planning processes for Finance department, including loading and refreshing of data based on requirements. Understand and conduct the front-end functionality to amend and change hierarchical structures within the environment. Debug and analyse errors and anomalies within Hyperion system as raised by Finance and to pinpoint areas of failure and correct any issues. Liaise with Finance on a daily basis to ensure smooth running of the Hyperion environment. Build data flows within the SQL environment in SSIS packages. Introduce new field and data types for new information to be collated in the CORE environment. To integrate with all the Bank’s sub-systems using data abstraction and connectivity layers, i.e. ODBC, ADO.net. Build reports based on business requirements using Hyperion Interactive Reports. Ensure that the environment is running optimally and to utilise house-keeping procedures. Sharepoint Integration: Integrate the SharePoint environment and Forms with Equation system to introduce automation of processes thereby eliminating the need for duplicate entry. Utilise web services to integrate from cutting edge technology into legacy systems such as Equation. End of Day Cycle: Provide second and third level support for in-house programmes during the end of day cycle. Able to analyse and rectify any problems raised in an independent and team scenario. Take ownership of a problem and deliver a solution in a timely manner. Provide out of office hours support. Risk & Regulatory Duties Maintain knowledge of all applicable regulatory requirements including the Bank’s Risk and Compliance policies and procedures and adhere to these to avoid exposing the Bank to undue risk. Report policy/procedure breaches and areas of potential non-compliance and suspicions promptly upon identification in accordance with the Bank's Risk and Compliance policies. Accurately execute all controls within own area to minimise risk of policy, procedure, and/or regulatory breaches. Identify new risks/control gaps within own area and escalate accordingly to your Line Manager and/or Head of Department. Training & Competence Complete all annual mandatory regulatory refresher training as per the Bank's training plans and deadlines. Proactively seek to complete recommended technical and behavioural competencies training required for your role. Conduct Act in accordance with the FCA/PRA Code of Conduct. Business Continuity Fulfil all prescribed business continuity requirements as set out in the organisational or departmental specific plans or as instructed by the Line Manager/Head of Department. Qualifications/Experience Degree level qualified or equivalent. SQL Programming. C# Software development. Knowledge and Skills C# Programming to high level of proficiency. Software analysis and design. SQL query language. Dimensional modelling Data warehouse design concepts, (Inmon or Kimball) This is a Full-Time Contract initially for 6 months – but likely to become permanent. Salary for this position will be £55K - £60K per annum. The Client is based in the City of London. Please do send your CV to us in Word format along with your salary and availability.

C# .NET Software Developer with FX 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 trach record of developing with C# .NET ideally with some understanding FX projects. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just ‘making up the numbers’. Initially reporting to the CTO, the successful candidate will become a key member of the global team. There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents, Responsibilities :- Re-architecting and building the in-house middle office platform and integrating with a new trading platform. Developing pricing toolsets Integrating to external reporting/tradeflow and pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 years experience Microsoft web technologies ( C#, 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 production ready software. Desirable skills :- Knowledge of the FIX protocol Knowledge of FX trade processing Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) ( training will be given) Qualifications: Computer Science related degree preferred At least 3 years experience in a comparable development role. The Client is based in the City of London. The salary for this role will be £50K - £60K. Please do send your CV to us in Word format along with your salary and availability.

Software Engineer with C# or Java and Azure Must have a bachelor's degree in computer science, software engineering, or a related field is required. Must have at least 4 to 6 years of progressively complex experience in a directly related area, during which both professional and technical capabilities have been clearly demonstrated. Coupled with at least 4 years of design and development. experience with various relevant Microsoft platforms, tools, technologies, patterns, and techniques related to Azure tools, integration, and data is required. Experience with industry/domains like pharmaceutical, finance, HR, sales, marketing, and manufacturing is highly preferred. Experience with healthcare industry regulations, data security and compliance standards (e.g. GDPR), and EDI standards (e.g. FHIR, HL7), etc. is very valuable. Developer certifications of Azure and/or Microsoft suite technologies is a big plus. Technical skills: In-depth knowledge and thorough experience in programming, configuring, and/or integrating using/with Azure integration tools like Data factory, LogicApps, Functions, API Management, Data catalog, WebApps, Integration service environment, configuring monitoring & diagnostics, etc., and connectivity & security configurations (certificates, encryptions, etc.). In-depth knowledge and experience with Azure data storage (SQL Server, Data lake, Synapse, etc.) & access tools, APIs, cloud connectivity, and ETL processes. Knowledge and some experience of MS Office/MS Office 365 suite, SharePoint Online, Power Apps, GitHub, MS Teams, etc. In-depth knowledge & experience using Visual Studio, with one of the programming languages: C#/Java/JavaScript/Python, and PowerShell. In-depth knowledge and thorough experience of using Serverless, SOAP, XML, REST, JSON, EDI, XSLT, Async/Sync, Request/Response, Service Bus, Publish/Subscribe, Batch/Real-time, Scheduling, Event triggers, etc. In-depth knowledge and development experience using MS SQL Server (SSIS, T-SQL, Stored procedures, Functions, Views, Queries, Datatype conversions, etc.). Thorough understanding of the fundamental architecture of the cloud and on-prem MSFT Suite (e.g. Share point) and Integration platforms architecture (e.g. BizTalk, MuleSoft, or similar), etc., and version control methods. Solid fundamentals and thorough understanding of exception handling principles and production/operational support solutions (alerts, dashboards, runbooks, etc.) Experience working with Azure DevOps and CI/CD pipeline. Experience working with APIs, Postman/SOAPUI tools, MS D365, ServiceNow, Azure Analytics tools, Azure Data lake, Azure Synapse, Azure BYOD & Data verse, Informatica, BI tools, etc. is a big plus. General business skills: Clear communication to translate and explain business requirements to technology & vice-versa. Analytical & methodical mindset with a problem-solving attitude is extremely important for the success of this role. Clear, concise written, verbal, and presentation skills. Must be a team player who can earn a team’s respect quickly. Ability to take initiative and be innovative. Ability to complete projects and achieve results in an ambiguous work environment. The role will be based in London and can be partly remote. The Client is based in Livingston NJ USA. Salary will be in the range £60K to £95K. Please do send your CV to us in Word format along with your salary and availability.

C# .net Developer – Insurance Our Client is an insurance underwriter in the City of London. They are now looking to grow their software development team and are looking to recruit a C# .net Software Developer. You will have at least 5 to 7 years expertise in developing complex software with C#. A strong mathematical background would be advantageous but not required. Must have excellent communication and interpersonal skills. Expert in C# Development coupled with Java/jQuery Web development Web API, CSS. You will have solid SQL Server experience (stored procedures, table design and some maintenance). Microsoft Office including VBA and advanced skills in Excel and HTML/IIS. Develop and support applications using Visual Studio and other Products where appropriate. Provide support for Microsoft Office Applications along with design and build reports for our SharePoint Applications. The ideal candidate will have a drive to succeed, take part in IT strategy and work in a technology rich and agile environment. The developer will be part of a small team with responsibilities for ensuring the business has full support regarding IT systems. Key aspects of the role will be to: Initiate and promote improvements to MI and analysis Analyse requirements and provide the most suitable solution using the most appropriate technology. Document/support and upgrade a wide range of internal applications/processes As this is a small team, you will need to be flexible in your approach, as you will have primary responsibility for some specific systems but will need to be aware of the overall system. Ability to produce ad hoc reporting and analysis of information in the Data Warehouse Work both as part of a team and under your own initiative Communicate with all areas of the business, at all levels The Client uses Windows Servers and virtualised Windows Clients, with Microsoft office products (Word, Excel, Access, PowerPoint etc.). Additionally they use Office 365 for email, Microsoft SQL Server for our main databases and SharePoint for our intranet. For underwriting the Client uses (Eclipse) and for Accounts (Sun), and a number of other smaller applications for specific jobs, such as RMS for Modelling and Remetrica for Actuarial function. The salary for this role will be up to £50K – for the right candidate maybe slightly higher for exceptional candidates. The Client will consider someone junior with an ability to learn and hit the ground running at £25K - £30K. You will have a 2:1 in maths or computer science, or similar. The company is based in the City of London. Please send your CV to us in Word format along with your salary and availability.

About the Job C# Dot Net Developer with Classic ASP – Waterloo London We are looking to recruit a C# Dot Net Developer for a Client based at Waterloo London. You must have at least 1 to 3 years experience of software development with the following: Classic-ASP T-SQL jQuery HTML & CSS You will have .NET or MVC experience almost certainly could work in classic-ASP. In addition you must have experience of MS SQL Server. The Client produces surveys which are all managed in-house using their own survey programming framework written in classic-ASP. The framework enables the team to create a new survey very quickly and efficiently, with a high degree of customisation and advanced features, (including in other languages) and publish real-time results via an online reporting platform. Salary will depend on level of experience - £25-£30K for a junior developer and up to £40K with at least 5 years experience. Please send your CV to -hidden email- in Word format, along with your salary expectations and availability.

Fullstack Software Developer with C# Asp.net Our Client is an established is a recognised leader with a widely used commercial software in the financial markets. They are now looking for additional personnel to join the software development team with extensive proven expertise in developing software with C# with .net core – you must have at least 5 to 7 years experience. Personal Responsibilities: The Client is looking for a creative, detail-orientated Web Software Developer to join our Web Development team. Within the Web Development team, you will have the opportunity to enjoy working with a range of web technology across the full stack. The Company’s client base is growing and as part of this growth we are looking to improve and enhance our web-oriented product offerings. We are looking to recruit highly motivated and creative web developers who can be instrumental in delivering an ambitious digital roadmap. Previous Experience/Education: Web Developers at this Company don’t always need industry-specific work experience, but they must be able to demonstrate their web software coding capability in organisations of a similar size and complexity. Ideally, looking for Web Developers with 5 plus years work experience. Additionally, candidates should be experienced in debugging and profiling applications associated with developing, testing and deploying web applications. It is preferable for Web Developers to hold a degree in Computer Science or a related field. Successful Web Developers should have sound knowledge and experience in different programming applications. C#, Asp.net/Core, JavaScript, HTML, CSS, MVC and JSON are required core skills. Function: Candidates should be able to demonstrate strong ability to work independently and as part of a team building websites from the ground up in C#, MVC, Asp.net and Asp.net core. The successful candidate should have a good command of C#, HTML, CSS, JavaScript, JSON & Bootstrap. Exposure to any UI binding framework such as Vue.js, AngularJS, React, and Knockout would be beneficial. Additionally, the candidate should be comfortable using IIS. Full understanding of the MVC pattern, REST APIs and asp.net controllers are a must. Web developers should be aware of security vulnerabilities, such as those identified in OWASP, and their code should mitigate these threats. Required: Web Developers need experience in the design, creation and maintenance of websites across multiple platforms. The most important duties and responsibilities of the Web Developer include: Writing efficient code using best practice for software development Creating websites using different languages such as HTML and CSS Working with Programmers and Web Designers to create a website that matches the visual design intent Communicating with business colleagues to gather and refine requirements and specifications for content development within agreed-upon timelines Researching a variety of software programs Creating and maintaining the documentation for software used Improving and enhancing websites after they have been created Skills Required: A successful Web Developer candidate will have various prerequisite skills/qualifications needed for duties such as a Degree in Computer Science or related field). Some skills include, but are not limited to, the following: Strong interpersonal skills and the ability to establish and maintain close working relationships with business stakeholders and other technologists A pro-active approach with a keen attention to detail Proactive with a keen desire to take ownership of projects Functional knowledge and coding experience Basic knowledge of search engine optimisation (SEO) The ability to multitask within the budgets and time constraints set by the company Strong communication and problem-solving skills An understanding of development approaches and methods Knowledge of mobile applications, computer operating systems and web browsers Strong analytical skills The salary for this position with be in the range £55K - £75K plus benefits. The Client has offices in the City of London and close to Basildon in Essex. Currently this role will be based 2 days at the office in Essex and 3 days remote working. Please send your CV to us In Word format along with your salary and notice period.

C#/.Net Software Developer Banking London £40-55k This is a new and exclusive opportunity for a bright C#/.Net Software Developer to join my thriving investment banking client as they are expanding their C#/.Net Software Development team Role details Title: C#/.Net Software Developer Employer: investment bank Location: London City Liverpool street station hybrid working 50/50% in office and home working Permanent role- salary £40,000- £55,000 Requirements: C#/.Net software, platform integration, SQL This is a new opportunity for a C#/.Net Software Developer to join our Front Office Platform Integration team, to facilitate trading activities, trade reporting and risk management using well known technologies such as .Net, SQL Server, IBM MQ, FIX and XML working in an agile environment in collaboration with other teams. Business Area - Front Office Platform Integration Responsibilities: Implement and delivery S&T platform integration functionalities to business requirements Effectively communicate with stake holders to understand requirements to meet their expectations This is a really interesting role, in a thriving banking projects team so it is a great opportunity to learn For more information, and the chance to be considered, please do send through a CV through to Good luck To find out more about Huxley, please visit Huxley, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales

Senior Lead C# Software Developer We urgently require a Senior C# Lead Developer with at least 5 to 10 years solid expertise in developing financial systems ideally banking systems. Your experience should include extensive knowledge of developing complex financial systems in C# as Teal Leader. Any experience of SQL Server or backend database would be useful but not essential. The position will be based close to London Bridge. Please send your CV to us in Word format along with your daily rate and notice period.

Years of relevant experience 2+ years Education Level Bachelor's Degree About the Job Our Client is looking to recruit a C# .net Software Developer with SQL skills. The Client produces information for the Oil and Gas industry and you will be involved in helping their clients and team visualise and interact with the company’s research data. Required Skills · .net 4, c# , asp.net · MS SQL (Working with and developing relational databases in SQL) · Stored procedures, Functions, SSIS · HTML,CSS · Web Services · Java script · Jquery, AJAX, XML Desirable Skills · GIS · Business Intelligent Tools eg. Logi,Tablae This is a full time position where our Client is seeking someone with about 3 to 5 years’ experience with C# Dot Net with MS SQL Server software development. You will be involved in developing a reporting tool for clients to be able to login to and turn a query into a visual and interactive representation of the results. C# Dot Net development. Support modelling and forecasting processes work with the consulting and management teams to understand what they want to achieve and advise them regarding a stepped approach to achieving this goal. Support the development of new products to improve internal efficiency and to better service client needs Introduce and implement new IT software and architecture. Key skills required: · C# Dot Net with SQL · R (Preference) This is a permanent position based in the City. Please send your CV in MS Word format, along with your availability and salary expectations.

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specializing 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 candidates ideally with some understanding 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 FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specializing in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just 'making up the numbers'. Initially reporting to the CTO, the successful candidate will become a key member of the global team. There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents, Responsibilities: Re-architecting and building the in-house middle office platform and integrating with a new trading platform. · Developing pricing toolsets · Integrating to 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#, 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 production ready software. Desirable skills: · Knowledge of the FIX protocol · Knowledge of FX trade processing · Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) (training will be given) Qualifications: Computer Science related degree preferred At least 3 years experience in a comparable development role. The Client is based in the City of London. The salary for this role will be £80K - £100K. Please do send your CV to us in Word format along with your salary and availability.

Software Developer with Full Stack C# and SQL Server Our Client is an international company in the media industry. They are looking to recruit an additional Software Engineer/Developer with full stack software development experience. Must have at least 2 to 4 years of hands-on software development covering both front and backend development. We're looking for a software engineer who bring fresh ideas from all areas, including information retrieval, distributed computing, large-scale system design. Any experience of networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile would be very useful. The Client would like to see experience of the following skills: Languages: HTML5, CSS3, C#, Javascript ( is not main focus but knowledge is good) Frameworks: ASP.Net 4-6, MVC, Ajax, JQuery, HTML, Bootstrap and Knockout (required), Angular (optional) DB’s: Ms Sql Server 2012 Testing: Nunit Tools: Jira, Git and Git Hub, Bitbucket Practices: Agile, Scrum The role: Creating and updating the user interface enabling our customers to create beautiful , bespoke products on their global webstores Creating a project management tool enabling customers to come back to their personalization projects without starting the process from scratch. Creating a one click photobook experience; a thinking system which creates and presents photos and photobooks in the best layout order Continuous optimization and debugging when adjustments are made to our webstores Design and implementation of next-generation web applications using Java and C# that can handle web-scale volumes of traffic Summary Do you have at least 2 years full stack development experience with a focus on front end development? Have you worked in a fast paced ecommerce environment? Have you experience in supporting Web applications with high traffic? Are you a whizz with scripting languages JavaScript and C# ? Experienced in full automation and configuration management? Can you help developers own and deliver change from keyboard to customer? Can you diagnose and fix complex production issues working with others as necessary? Are you a Developer who wants to work in a cutting edge & dynamic operations team? Can you help continually improve systems to reduce impact from technical issues? The Company is based in West London. The salary range for this position is £30K - £40K depending on expertise. Please send your CV to us in Word format.